; **************************************************************************** ; twavplay.asm (for Retro DOS) ; ---------------------------------------------------------------------------- ; TWAVPLAY.COM ! AC'97 (ICH) WAV PLAYER & VGA DEMO program by Erdogan TAN ; ; 06/02/2025 ; ; [ Last Modification: 10/02/2025 ] ; ; Assembler: NASM 2.15 ; ---------------------------------------------------------------------------- ; nasm twavplay.asm -l twavplay.lst -o TWAVPLAY.COM ; **************************************************************************** %macro sys_msg 2 mov si, %1 ; message mov bl, %2 ; text color xor bh, bh ; video page 0 mov ah, 0Eh call p_msg %endmacro %macro SbOut 1 %%wait: in al, dx or al, al js short %%wait mov al, %1 ; command out dx, al %endmacro ; ---------------------------------------------------------------------------- ;BUFFERSIZE equ 65520 ; AC97 ; 07/02/2025 ;BUFFERSIZE equ 33680 ; AC97 ; 08/02/2025 ;BUFFERSIZE equ 10548 ; AC97 ; 48kHZ 16bit stereo audio block (18.2 block/s) ENDOFFILE equ 1 ; flag for knowing end of file ;LOADSIZE equ 16384 ; SB16 ;dma_buffer_size equ 32768 ; SB16 ; 08/02/2025 ;LOADSIZE equ 10560 ; SB16 ; 48kHZ 16bit stereo audio block (18.2 block/s) ; ---------------------------------------------------------------------------- ; Reference: ; ---------- ; Tiny Player v2.11 by Carlos Hasan. ; June, 1994. ;============================================================================= ; code ;============================================================================= [BITS 16] ; 16-bit intructions [ORG 100h] ; 06/02/2025 Start: ; Prints the Credits Text. sys_msg Credits, 0Bh ; deallocate unused DOS memory call setFree ; Clear BSS (uninitialized data) area xor ax, ax ; 0 mov cx, (bss_end - bss_start)/2 mov di, bss_start rep stosw ; Detect (& Enable) AC'97 or SB16 Audio Device call detect_audio_device jnc short GetFileName _dev_not_ready: ; couldn't find the audio device! sys_msg noDevMsg, 0Fh jmp Exit ; ---------------------------------------------------------------------------- GetFileName: mov si, 81h lodsb cmp al, 0Dh ; CR : No command line parameters ja short _x jmp pmsg_usage _x: mov di, wav_file_name xor cx, cx ; 0 jmp short _y ScanName: lodsb cmp al, 0Dh ; CR jna short a_4 _y: cmp al, 20h je short ScanName ; scan start of name. stosb mov ah, 0FFh a_0: inc ah a_1: inc cx lodsb stosb cmp al, '.' je short a_0 cmp al, 20h jna short a_3 and ah, ah jz short a_2 cmp al, '\' jne short a_2 mov ah, 0 a_2: cmp cl, 75 ; 64+8+'.'+3 -> offset 75 is the last chr jb short a_1 jmp short a_4 a_3: dec di or ah, ah ; if period NOT found, jnz short a_4 ; then add a .WAV extension. SetExt: mov dword [di], '.WAV' ; ! 64+12 is DOS limit ; but writing +4 must not ; destroy the following data ; so, 80 bytes path + 0 is possible here add di, 4 a_4: mov byte [di], 0 cmp byte [wav_file_name], 20h ja short open_wav_file ; ---------------------------------------------------------------------------- pmsg_usage: sys_msg msg_usage, 0Fh Exit: mov ax, 4C00h ; bye ! int 21h halt: jmp short halt ; ---------------------------------------------------------------------------- open_wav_file: ; open existing file mov dx, wav_file_name call openFile ; no error? ok. jnc short _z ; file not found! sys_msg noFileErrMsg, 0Fh jmp short Exit not_valid_wav: ; not a proper/valid wav file ! sys_msg not_valid_wavf, 0Fh jmp short Exit _z: call getWAVParameters jc short not_valid_wav mov bl, 4 mov cl, [WAVE_BlockAlign] sub bl, cl ; = 0 for 16 bit stereo ; = 2 for 8 bit stereo or 16 bit mono ; = 3 for 8 bit mono shr bl, 1 ; 0 --> 0, 2 --> 1, 3 --> 1 adc bl, 0 ; 3 --> 1 --> 2 mov [fbs_shift], bl ; = 2 mono and 8 bit ; = 0 stereo and 16 bit ; = 1 mono or 8 bit ; 07/02/2025 cmp byte [audio_hardware], 1 ; SB16 ? ;jne short write_info ; 08/02/2025 ;jne short audio_hardware_init jne short _r ; no, skip [g_samples] calculation ; count of audio samples for graphics data mov ax, 256 shr cl, 1 ; 0 = 8 bit mono, 1 = 16 bit mono or 8 bit stereo ; 2 = 16 bit stereo shl ax, cl mov [g_samples], ax ; 256 .. 1024 ; 08/02/2025 _r: ; calculate 18.2 block/s buffer size for proper wave scope mov ax, [WAVE_SampleRate] mov dx, 4*10 mul dx mov cx, 182 div cx mov cl, bl ; 0 = stereo & 16bit ; 1 = mono 16bit or stereo 8bit ; 2 = mono & 8bit and al, ~3 ; NOT 3 shr ax, cl ; AX = ; 10548 bytes for 48kHZ 16bit stereo ; 9692 bytes for 44kHZ 16bit stereo ; 7032 bytes for 32kHZ 16bit stereo ; 5272 bytes for 24kHz 16bit stereo ; 4844 bytes for 22kHZ 16bit stereo ; 3516 bytes for 16kHZ 16bit stereo ; 2636 bytes for 12kHZ 16bit stereo ; 2420 bytes for 11kHZ 16bit stereo ; 1756 bytes for 8kHZ 16bit stereo mov [loadsize], ax cmp byte [audio_hardware], 1 ; SB16 ? je short _t ; yes ; AC97 codec plays 16 bit stereo PCM data only shl ax, cl ; count of 16 bit samples shr ax, 1 _t: mov [buffersize], ax ; (if audio hardware supports vra) ; ---------------------------------------------------------------------------- ; 08/02/2025 audio_hardware_init: call audio_system_init jc short Exit write_info: call write_audio_dev_info call write_wav_file_info ; 07/02/2025 sys_msg msgPressAKey, 07h xor ah, ah int 16h cmp al, 1Bh ; ESC ;jne short _continue ;jmp short Exit ; 08/02/2025 ;je short Exit ; 08/02/2025 (*) jne short _continue jmp Exit _continue: ;call audio_system_init ;jc short Exit ; ---------------------------------------------------------------------------- PlayNow: mov cx, 256 xor bx, bx mov di, RowOfs MakeOfs: mov ax, bx shl ax, 7 ; * 128 mov al, 80 mul ah stosw inc bx loop MakeOfs ; ---------------------------------------------------------------------------- ;;;; setgraphmode: ; set VGA 640x480x16 graphics mode mov ax, 12h int 10h mov dx, 3C0h xor al, al setgraphmodel0: out dx, al out dx, al inc al cmp al, 10h jb short setgraphmodel0 mov al, 20h out dx, al ;;;; ; ---------------------------------------------------------------------------- ;mov si, LOGO_ADDRESS call putlbm ; ; 07/02/2025 ; jnc short loadlbm_ok ; ;loadlbm_err: ; call settextmode ; sys_msg LOGO_ERROR_MSG, 0Ch ; jmp Exit ; ;LOGO_ERROR_MSG: ; db "Error loading the IFF/ILBM logo picture !", 0Dh, 0Ah, 0 ; ;loadlbm_ok: ; ---------------------------------------------------------------------------- ; 08/02/2025 cmp byte [audio_hardware], 1 jne short skip_sdc ; 07/02/2025 ; parepare g_buffer wave graphics parameters mov bx, sdc_16bit_stereo mov al, [WAVE_BlockAlign] cmp al, 4 je short set_sdc_p_ok mov bx, sdc_8bit_mono cmp al, 1 je short set_sdc_p_ok mov bx, sdc_8bit_stereo cmp byte [WAVE_BitsPerSample], 8 je short set_sdc_p_ok mov bx, sdc_16bit_mono set_sdc_p_ok: mov [sound_data_copy], bx skip_sdc: ; ---------------------------------------------------------------------------- ; play the .wav file. call PlayWav ; ---------------------------------------------------------------------------- ; close the .wav file and exit. call closeFile ; ---------------------------------------------------------------------------- ; 07/02/2025 cmp byte [audio_hardware], 1 jne short terminate ; restore old interrupt vector mov al, [audio_intr] ; 5 or 7 xor ah, ah ; reset call set_hardware_int_vector ; ---------------------------------------------------------------------------- terminate: call settextmode jmp Exit ; ---------------------------------------------------------------------------- ; 06/02/2025 ; INPUT: ds:dx = file name address ; OUTPUT: [FileHandle] openFile: mov ax, 3D00h ; open File for read int 21h jnc short _of1 ; cf = 1 -> not found or access error retn _of1: mov [FileHandle], ax retn ; ---------------------------------------------------------------------------- ; 06/02/2025 ; INPUT: [FileHandle] ; OUTPUT: none closeFile: mov bx, [FileHandle] mov ax, 3E00h int 21h ; close file retn ; ---------------------------------------------------------------------------- ; 06/02/2025 getWAVParameters: mov dx, WAVFILEHEADERbuff mov bx, [FileHandle] mov cx, 44 ; 44 bytes mov ah, 3Fh int 21h jc short gwavp_retn cmp ax, 44 jb short gwavp_retn cmp dword [RIFF_Format], 'WAVE' jne short gwavp_stc_retn cmp word [WAVE_AudioFormat], 1 ; Offset 20, must be 1 (= PCM) jne short gwavp_stc_retn ; (OpenMPT creates wav files with a new type header, ; this program can not use the new type ; because of 'data' offset is not at DATA_SubchunkID.) ; ((GoldWave creates common type wav file.)) cmp dword [DATA_SubchunkID], 'data' je short gwavp_retn gwavp_stc_retn: stc gwavp_retn: retn ;============================================================================= ; ;============================================================================= ; 08/02/2025 (*) (Wave scope/graphics synchronization) ; 06/02/2025 PlayWav: cmp byte [audio_hardware], 1 ja short playwav_ac97 playwav_sb16: cmp byte [stopped], 1 ; 07/02/2025 jb short playwav_sb16_@ ; replay mov byte [stopped], 0 mov byte [half_buffer], 1 jmp short playwav_sb16_@@ playwav_sb16_@: ; set audio interrupt vector (to user's handler) mov al, [IRQnum] mov ah, 1 ; set mov dx, IRQ_service call set_hardware_int_vector playwav_sb16_@@: ;mov ax, wav_buffer1 ; 08/02/2025 (*) mov ax, dma_buffer call SB16_LoadFromFile mov ax, [count] add [LoadedDataBytes], ax adc word [LoadedDataBytes+2], 0 ;mov ax, wav_buffer2 ; 08/02/2025 (*) mov ax, dma_buffer add ax, [loadsize] ; = add ax, [buffersize] call SB16_LoadFromFile mov ax, [count] add [LoadedDataBytes], ax adc word [LoadedDataBytes+2], 0 call sb16_init_play mov byte [IRQnum], 0 jmp SB16_TuneLoop playwav_ac97: ; 08/02/2025 cmp byte [stopped], 1 jb short playwav_ac97_@ mov byte [stopped], 0 call ac97_RePlayWav jmp short AC97_TuneLoop playwav_ac97_@: call ac97_play_setup call ac97_init_play ;jmp short AC97_TuneLoop ; ---------------------------------------------------------------------------- ; 08/02/2025 ; 06/02/2025 AC97_TuneLoop: ; 04/02/2025 (cgaplay.asm) ;tuneLoop: tLWait: cmp byte [stopped], 0 jna short tL1 tLWait@: cmp byte [stopped], 3 jnb short tL0 call checkUpdateEvents jnc short tLWait tL0: jmp _exitt_ tL1: call updateLVI ; /set LVI != CIV/ jz short tL0 call checkUpdateEvents jc short tL0 cmp byte [stopped], 0 ja short tLWait@ call getCurrentIndex test al, BIT0 jz short tL1 ; loop if buffer 2 is not playing ; load buffer 1 mov ax, [WAV_BUFFER_1] call word [loadfromwavfile] jnc short tL2 ; end of file _exitt_: ; Stop Playing call ac97_stop retn tL2: mov ax, [count] add [LoadedDataBytes], ax adc word [LoadedDataBytes+2], 0 tL3: call updateLVI jz short _exitt_ call checkUpdateEvents jc short _exitt_ cmp byte [stopped], 0 ja short tLWait@ call getCurrentIndex test al, BIT0 ;jnz short tL2 ; loop if buffer 1 is not playing ; 08/02/2025 jnz short tL3 ; load buffer 2 mov ax, [WAV_BUFFER_2] call word [loadfromwavfile] jc short _exitt_ mov ax, [count] add [LoadedDataBytes], ax adc word [LoadedDataBytes+2], 0 jmp short tLWait ; ---------------------------------------------------------------------------- ; 08/02/2025 (*) ; 06/02/2025 SB16_TuneLoop: ; 04/02/2025 (cgaplay2.asm) ;TuneLoop: .tLWait: cmp byte [stopped], 0 jna short .tL2 .tL1: call checkUpdateEvents jnc short .tLWait ._exit_: call sb16_stop retn .tL2: ; Check SB 16 interrupt status cmp byte [IRQnum], 0 jna short .tL1 xor byte [half_buffer], 1 mov byte [IRQnum], 0 ; load buffer 1 mov ax, dma_buffer ; wav_buffer1 cmp byte [half_buffer], 0 jna short .tL3 ; load buffer 2 ;add ax, LOADSIZE ; ax = wav_buffer2 ; 08/02/2025 (*) add ax, [loadsize] .tL3: call SB16_LoadFromFile jc short ._exit_ ; end of file mov ax, [count] add [LoadedDataBytes], ax adc word [LoadedDataBytes+2], 0 jmp short .tL1 ;============================================================================= ; ;============================================================================= c4ue_ok: retn ; 06/02/2025 checkUpdateEvents: call check4keyboardstop jc short c4ue_ok push ax ; * or ax, ax jz short c4ue_cpt cmp al, 20h ; SPACE (spacebar) ; pause/play jne short c4ue_chk_s cmp byte [stopped], 0 ja short c4ue_chk_ps call audio_pause jmp short c4ue_cpt c4ue_chk_ps: cmp byte [stopped], 1 ja short c4ue_replay ; continue to play (after a pause) call audio_play jmp short c4ue_cpt c4ue_replay: pop ax ; * pop ax ; return address call move_to_beginning ;mov byte [stopped], 0 jmp PlayWav c4ue_chk_s: cmp al, 'S' ; stop jne short c4ue_chk_fb cmp byte [stopped], 0 ja c4ue_cpt ; Already stopped/paused call audio_stop jmp short c4ue_cpt c4ue_chk_fb: cmp al, 'F' jne short c4ue_chk_b call move_forward jmp short c4ue_cpt c4ue_chk_b: cmp al, 'B' jne short c4ue_cpt call move_backward c4ue_cpt: push ds mov bx, 40h mov ds, bx mov bx, 6Ch ; counter (INT 08h, 18.2 ticks per sec) ;cli mov ax, [bx] mov dx, [bx+2] ;sti pop ds pop cx ; * cmp dx, [timerticks+2] jne short c4ue_utt cmp ax, [timerticks] je short c4ue_skip_utt c4ue_utt: mov [timerticks], ax mov [timerticks+2], dx jmp short c4ue_cpt_@ c4ue_skip_utt: and cx, cx jz short c4ue_cpt_@ c4ue_vb_ok: retn c4ue_cpt_@: cmp byte [stopped], 0 ja short c4ue_vb_ok jmp drawscopes ;============================================================================= ; ;============================================================================= ; 06/02/2025 check4keyboardstop: mov ah, 1 int 16h ;clc jz short _cksr xor ah, ah int 16h ; (change PCM out volume) cmp al, '+' jne short p_1 inc byte [volume] jmp short p_2 p_1: cmp al, '-' jne short p_4 dec byte [volume] p_2: call SetPCMOutVolume _cksr: xor ax, ax p_3: retn p_4: cmp ah, 01h ; ESC je short p_quit cmp al, 03h ; CTRL+C je short p_quit cmp al, 20h je short p_3 cmp al, 0Dh ; CR/ENTER je short p_3 and al, 0DFh cmp al, 'Q' je short p_quit clc retn p_quit: stc retn ;----------------------------------------------------------------------------- ; ;----------------------------------------------------------------------------- ; 06/02/2025 SetPCMOutVolume: cmp byte [audio_hardware], 1 je short sb16_set_volume ;----------------------------------------------------------------------------- ac97_set_volume: mov al, [volume] mov ah, 31 cmp al, ah ; 31 jna short _ac97sv_@ mov al, ah mov [volume], al ; max = 31, min = 0 _ac97sv_@: ; max = 0, min = 31 sub ah, al mov al, ah mov dx, [NAMBAR] ;add dx, CODEC_MASTER_VOL_REG add dx, CODEC_PCM_OUT_REG out dx, ax retn ;----------------------------------------------------------------------------- sb16_set_volume: mov al, [volume] mov ah, 15 cmp al, ah ; 15 jna short _sb16sv_@ mov al, ah mov [volume], al ; max = 15, min = 0 _sb16sv_@: ; al = sound volume (15 = max, 0 = min) push ax ; Tell the SB 16 card which register to write mov dx, [audio_io_base] ;add dx, 4 ; Mixer chip address port add dl, 4 mov al, 22h out dx, al pop ax ;and al, 0Fh ; Set the volume for both L and R mov bl, 11h mul bl ; Set new volume mov dx, [audio_io_base] ;add dx, 5 add dl, 5 out dx, al retn ;============================================================================= ; 07/02/2025 - change song (wave file) play position ;============================================================================= move_backward: ; 07/02/2025 move_forward: ;; In order to go backwards 5 seconds: ;; Update file pointer to the beginning, skip headers mov cl, al ; 'B' or 'F' ; 04/02/2025 - cgaplay.asm ; 01/01/2025 (cgaplay.asm, 16bit registers) ; 01/12/2024 (32bit registers) move_backward_or_forward: ; 17/11/2024 ; 04/11/2024 ; (Ref: player.asm, Matan Alfasi, 2017) ; 04/11/2024 mov ax, 5 mov bx, [WAVE_BlockAlign] mul bx mov bx, [WAVE_SampleRate] mul bx ; dx:ax = transfer byte count for 5 seconds ; 17/11/2024 cmp cl, 'B' mov bx, [LoadedDataBytes] mov cx, [LoadedDataBytes+2] jne short move_fw ; cl = 'F' move_bw: sub bx, ax sbb cx, dx jnc short move_file_pointer move_to_beginning: xor cx, cx ; 0 xor bx, bx ; 0 jmp short move_file_pointer move_fw: add bx, ax adc cx, dx jc short move_to_end cmp cx, [DATA_SubchunkSize+2] ja short move_to_end jb short move_file_pointer cmp bx, [DATA_SubchunkSize] jna short move_file_pointer move_to_end: mov bx, [DATA_SubchunkSize] mov cx, [DATA_SubchunkSize+2] move_file_pointer: mov dx, bx mov [LoadedDataBytes], dx mov [LoadedDataBytes+2], cx add dx, 44 ; + header adc cx, 0 ; seek mov bx, [FileHandle] mov ax, 4200h int 21h retn ;============================================================================= ; Wave Data Loading procedure for Sound Blaster 16 (there is not a conversion) ;============================================================================= ; 08/02/2025 (*) ; 07/02/2025 SB16_LoadFromFile: test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short sblff_0 ; no stc retn sblff_0: mov di, ax ; save buffer address mov bx, [FileHandle] ;mov cx, LOADSIZE ; 08/02/2025 (*) mov cx, [loadsize] mov dx, ax ; buffer address ; load/read file ; bx = file handle ; ds = cs ; ds:dx = buffer ; cx = read count mov ah, 3Fh int 21h jc short sblff_2 ; error ! mov [count], ax cmp ax, cx je short _endLFF ; di = buffer address add di, ax sblff_1: call sb_padfill ; blank pad the remainder ;clc ; don't exit with CY yet. or byte [flags], ENDOFFILE ; end of file flag ; 07/02/2025 ;cmp word [count], 1 _endLFF: retn sblff_2: xor ax, ax jmp short sblff_1 ;----------------------------------------------------------------------------- ; entry ds:ax points to last byte in file ; cx = target size ; note: must do byte size fill ; destroys bx, cx sb_padfill: ; 24/11/2024 ; di = offset (to be filled with ZEROs) ; es = ds = cs ; ax = di = number of bytes loaded ; cx = buffer size (> loaded bytes) sub cx, ax xor ax, ax cmp byte [WAVE_BitsPerSample], 8 ja short padfill@ mov al, 80h padfill@: rep stosb retn ;============================================================================= ; AC97 procedures - load and convert sound data ;============================================================================= ; 08/02/2025 (*) (Wave scope/graphics synchronization) ; 07/02/2025 ; 04/02/2025 - cgaplay.asm ;----------------------------------------------------------------------------- ; 07/12/2024 ;----------------------------------------------------------------------------- ; ///// ; 08/02/2025 (*) ; 30/05/2024 (ich_wav4.asm, 19/05/2024) loadFromFile: ; 07/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff_0 ; no stc retn lff_0: ; 08/11/2023 mov bp, ax ; save buffer segment ; 17/11/2024 mov bx, [FileHandle] ; 17/11/2024 mov cx, [loadsize] xor di, di ; 0 ;mov cl, [fbs_shift] ;and cl, cl ;jz short lff_1 ; stereo, 16 bit ; 17/11/2024 cmp byte [fbs_shift], 0 jna short lff_1 ; stereo, 16 bit ;mov di, BUFFERSIZE - 1 ; 65535 ;; fbs_shift = ;; 2 for mono and 8 bit sample (multiplier = 4) ;; 1 for mono or 8 bit sample (multiplier = 2) ;shr di, cl ;inc di ; 16384 for 8 bit and mono ; ; 32768 for 8 bit or mono ; 17/11/2024 ;mov cx, [loadsize] ; 16380 or 32760 ;mov ax, cs mov dx, temp_buffer ; temporary buffer for wav data ; 17/02/2017 (stereo/mono, 8bit/16bit corrections) ; load file into memory ;mov cx, di ; 17/11/2024 ;mov bx, [FileHandle] ; 17/11/2024 ;mov ds, ax mov ah, 3Fh int 21h ;mov bx, cs ;mov ds, bx ; 17/11/2024 ;push cs ;pop ds jc lff_4 ; error ! ; 14/11/2024 mov [count], ax ; 17/11/2024 ; 08/11/2023 ;xor dx, dx ; 0 and ax, ax jz short lff_3 mov bl, [fbs_shift] push es ;mov di, dx ; 0 ; [fbs_off] ; 17/11/2024 ; di = 0 ;mov bp, [fbs_seg] ; buffer segment mov es, bp mov si, temp_buffer ; temporary buffer address mov cx, ax ; byte count cmp byte [WAVE_BitsPerSample], 8 ; bits per sample (8 or 16) jne short lff_7 ; 16 bit samples ; 8 bit samples dec bl ; shift count, 1 = stereo, 2 = mono jz short lff_6 ; 8 bit, stereo lff_5: ; mono & 8 bit lodsb sub al, 80h ; 08/11/2023 shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; left channel stosw ; right channel loop lff_5 jmp short lff_9 lff_6: ; stereo & 8 bit lodsb sub al, 80h ; 08/11/2023 shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw loop lff_6 jmp short lff_9 lff_7: shr cx, 1 ; word count lff_8: lodsw stosw ; left channel stosw ; right channel loop lff_8 lff_9: pop es ;or di, di ;jz short endLFF ; 64KB ok ;mov ax, di ; [fbs_off] ;dec ax ; 17/11/2024 mov ax, di ;cmp ax, BUFFERSIZE ; 65520 ;jnb short endLFF ;;mov cx, BUFFERSIZE - 1 ; 65535 ; 17/11/2024 ;mov cx, BUFFERSIZE ; 08/02/2025 (*) mov cx, [buffersize] ; words shl cx, 1 ; bytes ; 17/11/2024 ; ax = di cmp ax, cx ;jnb short endLFF ;jmp short lff_3 jb short lff_3 retn lff_1: ;mov bp, ax ; save buffer segment xor dx, dx ; load file into memory ;mov cx, (BUFFERSIZE / 2) ; 32k chunk ; 17/11/2024 ;mov cx, [buffersize] ; BUFFERSIZE / 2 ; 17/11/2024 (*) ; cx = [loadsize] = 2*[buffersize] ;mov bx, [FileHandle] ; 17/11/2024 mov ds, ax ; mov ds, bp mov ah, 3Fh int 21h ;mov di, cs ;mov ds, di ; 17/11/2024 push cs pop ds ; 07/11/2023 jc short lff_4 ; error ! ; 14/11/2024 mov [count], ax ; 17/11/2024 ; di = 0 cmp ax, cx je short endLFF ; 17/11/2024 ; di = 0 mov di, ax lff_3: call padfill ; blank pad the remainder ;clc ; don't exit with CY yet. or byte [flags], ENDOFFILE ; end of file flag endLFF: retn lff_4: xor ax, ax jmp short lff_3 ;----------------------------------------------------------------------------- ; entry ds:ax points to last byte in file ; cx = target size ; note: must do byte size fill ; destroys bx, cx padfill: ; 14/12/2024 ; 17/11/2024 ; di = offset (to be filled with ZEROs) ; bp = buffer segment ; ax = di = number of bytes loaded ; cx = buffer size (> loaded bytes) ; 07/11/2023 ; 06/11/2023 ; 17/02/2017 push es ;push di ;mov di, [fbs_seg] ;mov es, di mov es, bp sub cx, ax ; 08/11/2023 ;mov di, ax ; (wrong) ; 17/11/2024 ;mov di, dx ; buffer offset ;add di, ax ; 07/11/2023 ;add di, [fbs_off] ; 25/11/2024 xor ax, ax ; 14/12/2024 rep stosb ;mov [fbs_off], di ;pop di pop es retn ; ///// ;----------------------------------------------------------------------------- ; interpolation procedures ;----------------------------------------------------------------------------- ; 07/02/2025 ; 04/02/2025 - cgaplay.asm ; -------------------------------------------------------- ; 02/02/2025 - playwav8.asm - ac97play.asm - cgaplay.asm ; 01/01/2025 - cgaplay.asm ; 18/12/2024 - ac97play.asm ; ---------- ; 30/05/2024 - playwav6.asm ; 18/11/2023 - ich_wav3.asm & ich_wav4.asm ; 15/11/2023 - PLAYWAV5.COM, ich_wav5.asm ; 14/11/2023 ; 13/11/2023 - Erdogan Tan - (VRA, sample rate conversion) ; -------------------------------------------------------- ;;Note: At the end of every buffer load, ;; during buffer switch/swap, there will be discontinuity ;; between the last converted sample and the 1st sample ;; of the next buffer. ;; (like as a dot noises vaguely between normal sound samples) ;; -To avoid this defect, the 1st sample of ;; the next buffer may be read from the wav file but ;; the file pointer would need to be set to 1 sample back ;; again via seek system call. Time comsumption problem! - ;; ;; Erdogan Tan - 15/11/2023 ;; ;; ((If entire wav data would be loaded at once.. conversion ;; defect/noise would disappear.. but for DOS, to keep ;; 64KB buffer limit is important also it is important ;; for running under 1MB barrier without HIMEM.SYS or DPMI. ;; I have tested this program by using 2-30MB wav files.)) ;; ;; Test Computer: ASUS desktop/mainboard, M2N4-SLI, 2010. ;; AMD Athlon 64 X2 2200 MHZ CPU. ;; NFORCE4 (CK804) AC97 audio hardware. ;; Realtek ALC850 codec. ;; Retro DOS v4.2 (MSDOS 6.22) operating system. ;----------------------------------------------------------------------------- ;----------------------------------------------------------------------------- load_8khz_mono_8_bit: ; 02/02/2025 ; 15/11/2023 ; 14/11/2023 ; 13/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff8m_0 ; no stc retn lff8m_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h ;jc short lff8m_5 ; error ! ; 14/11/2023 jnc short lff8m_6 jmp lff8m_5 lff8m_6: ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address and ax, ax ;jz short lff8m_3 ; 15/11/2023 jz short lff8_eof mov cx, ax ; byte count lff8m_1: lodsb mov [previous_val], al sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (left channel) stosw ; original sample (right channel) ;xor ax, ax ; 02/02/2025 mov al, [si] dec cx jnz short lff8m_2 ; 14/11/2023 mov al, 80h lff8m_2: ;mov [next_val], ax mov bh, al ; [next_val] mov ah, [previous_val] add al, ah ; [previous_val] rcr al, 1 mov dl, al ; this is interpolated middle (3th) sample add al, ah ; [previous_val] rcr al, 1 mov bl, al ; this is temporary interpolation value add al, ah ; [previous_val] rcr al, 1 sub al, 80h shl ax, 8 stosw ; this is 1st interpolated sample (L) stosw ; this is 1st interpolated sample (R) mov al, bl add al, dl rcr al, 1 sub al, 80h shl ax, 8 stosw ; this is 2nd interpolated sample (L) stosw ; this is 2nd interpolated sample (R) mov al, dl sub al, 80h shl ax, 8 stosw ; this is middle (3th) interpolated sample (L) stosw ; this is middle (3th) interpolated sample (R) ;mov al, [next_val] mov al, bh add al, dl rcr al, 1 mov bl, al ; this is temporary interpolation value add al, dl rcr al, 1 sub al, 80h shl ax, 8 stosw ; this is 4th interpolated sample (L) stosw ; this is 4th interpolated sample (R) ;mov al, [next_val] mov al, bh add al, bl rcr al, 1 sub al, 80h shl ax, 8 stosw ; this is 5th interpolated sample (L) stosw ; this is 5th interpolated sample (R) ; 8 kHZ mono to 48 kHZ stereo conversion of the sample is OK or cx, cx jnz short lff8m_1 ; -------------- lff8s_3: lff8m_3: lff8s2_3: lff8m2_3: lff16s_3: lff16m_3: lff16s2_3: lff16m2_3: lff24_3: lff32_3: lff44_3: lff22_3: lff11_3: lff12_3: ; 02/02/2025 mov cx, [buffersize] ; 16 bit (48 kHZ, stereo) sample size shl cx, 1 ; byte count sub cx, di jna short lff8m_4 ;inc cx shr cx, 1 xor ax, ax ; fill (remain part of) buffer with zeros rep stosw lff8m_4: push cs pop es retn lff8_eof: lff16_eof: lff24_eof: lff32_eof: lff44_eof: lff22_eof: lff11_eof: lff12_eof: ; 02/02/2025 ; 15/11/2023 mov byte [flags], ENDOFFILE jmp short lff8m_3 lff8s_5: lff8m_5: lff8s2_5: lff8m2_5: lff16s_5: lff16m_5: lff16s2_5: lff16m2_5: lff24_5: lff32_5: lff44_5: lff22_5: lff11_5: lff12_5: ; 02/02/2025 mov al, '!' ; error call tL0 ;jmp short lff8m_3 ; 15/11/2023 jmp lff8_eof ;----------------------------------------------------------------------------- load_8khz_stereo_8_bit: ; 02/02/2025 ; 15/11/2023 ; 14/11/2023 ; 13/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff8s_0 ; no stc retn lff8s_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff8s_5 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address shr ax, 1 ;;and ax, ax ;jz short lff8s_3 ; 15/11/2023 jz short lff8_eof mov cx, ax ; word count lff8s_1: lodsb mov [previous_val_l], al sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (L) lodsb mov [previous_val_r], al sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (R) ;xor ax, ax ; 02/02/2025 mov ax, [si] dec cx jnz short lff8s_2 ; convert 8 bit sample to 16 bit sample ; 14/11/2023 mov ax, 8080h lff8s_2: mov [next_val_l], al mov [next_val_r], ah mov ah, [previous_val_l] add al, ah rcr al, 1 mov dl, al ; this is interpolated middle (3th) sample (L) add al, ah rcr al, 1 mov bl, al ; this is temporary interpolation value (L) add al, ah rcr al, 1 sub al, 80h shl ax, 8 stosw ; this is 1st interpolated sample (L) mov al, [next_val_r] mov ah, [previous_val_r] add al, ah rcr al, 1 mov dh, al ; this is interpolated middle (3th) sample (R) add al, ah rcr al, 1 mov bh, al ; this is temporary interpolation value (R) add al, ah rcr al, 1 sub al, 80h shl ax, 8 stosw ; this is 1st interpolated sample (R) mov al, bl add al, dl rcr al, 1 sub al, 80h shl ax, 8 stosw ; this is 2nd interpolated sample (L) mov al, bh add al, dh rcr al, 1 sub al, 80h shl ax, 8 stosw ; this is 2nd interpolated sample (R) mov al, dl sub al, 80h shl ax, 8 stosw ; this is middle (3th) interpolated sample (L) mov al, dh sub al, 80h shl ax, 8 stosw ; this is middle (3th) interpolated sample (R) mov al, [next_val_l] add al, dl rcr al, 1 mov bl, al ; this is temporary interpolation value (L) add al, dl rcr al, 1 sub al, 80h shl ax, 8 stosw ; this is 4th interpolated sample (L) mov al, [next_val_r] add al, dh rcr al, 1 mov bh, al ; this is temporary interpolation value (R) add al, dh rcr al, 1 sub al, 80h shl ax, 8 stosw ; this is 4th interpolated sample (R) mov al, [next_val_l] add al, bl rcr al, 1 sub al, 80h shl ax, 8 stosw ; this is 5th interpolated sample (L) mov al, [next_val_r] add al, bh rcr al, 1 sub al, 80h shl ax, 8 stosw ; this is 5th interpolated sample (R) ; 8 kHZ stereo to 48 kHZ stereo conversion of the sample is OK jcxz lff8s_6 jmp lff8s_1 lff8s_6: jmp lff8s_3 ;----------------------------------------------------------------------------- load_8khz_mono_16_bit: ; 02/02/2025 ; 13/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff8m2_0 ; no stc retn lff8m2_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff8m2_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address shr ax, 1 ;and ax, ax jnz short lff8m2_8 ;jmp lff8m2_3 ; 15/11/2023 jmp lff8_eof lff8m2_8: mov cx, ax ; word count lff8m2_1: lodsw stosw ; original sample (left channel) stosw ; original sample (right channel) add ah, 80h ; convert sound level to 0-65535 format mov [previous_val], ax ; 02/02/2025 mov ax, [si] dec cx jnz short lff8m2_2 xor ax, ax lff8m2_2: add ah, 80h ; convert sound level to 0-65535 format mov bp, ax ; [next_val] add ax, [previous_val] rcr ax, 1 mov dx, ax ; this is interpolated middle (3th) sample add ax, [previous_val] rcr ax, 1 ; this is temporary interpolation value mov bx, ax add ax, [previous_val] rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; this is 1st interpolated sample (L) stosw ; this is 1st interpolated sample (R) mov ax, bx add ax, dx rcr ax, 1 sub ah, 80h stosw ; this is 2nd interpolated sample (L) stosw ; this is 2nd interpolated sample (R) mov ax, dx sub ah, 80h ; -32768 to +32767 format again stosw ; this is middle (3th) interpolated sample (L) stosw ; this is middle (3th) interpolated sample (R) mov ax, bp add ax, dx rcr ax, 1 mov bx, ax ; this is temporary interpolation value add ax, dx rcr ax, 1 sub ah, 80h stosw ; this is 4th interpolated sample (L) stosw ; this is 4th interpolated sample (R) mov ax, bp add ax, bx rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; this is 5th interpolated sample (L) stosw ; this is 5th interpolated sample (R) ; 8 kHZ mono to 48 kHZ stereo conversion of the sample is OK or cx, cx jnz short lff8m2_1 jmp lff8m2_3 lff8m2_7: lff8s2_7: jmp lff8m2_5 ; error ;----------------------------------------------------------------------------- load_8khz_stereo_16_bit: ; 02/02/2025 ; 16/11/2023 ; 15/11/2023 ; 13/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff8s2_0 ; no stc retn lff8s2_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff8s2_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address shr ax, 2 ; 16/11/2023 ;and ax, ax jnz short lff8s2_8 ;jmp lff8s2_3 ; 15/11/2023 jmp lff8_eof lff8s2_8: mov cx, ax ; dword count lff8s2_1: lodsw stosw ; original sample (L) ; 15/11/2023 add ah, 80h ; convert sound level to 0-65535 format mov [previous_val_l], ax lodsw stosw ; original sample (R) add ah, 80h ; convert sound level to 0-65535 format mov [previous_val_r], ax ; 02/02/2025 mov ax, [si] mov dx, [si+2] ; 16/11/2023 dec cx jnz short lff8s2_2 xor dx, dx xor ax, ax lff8s2_2: add ah, 80h ; convert sound level to 0-65535 format mov [next_val_l], ax add dh, 80h ; convert sound level to 0-65535 format mov [next_val_r], dx add ax, [previous_val_l] rcr ax, 1 mov dx, ax ; this is interpolated middle (3th) sample (L) add ax, [previous_val_l] rcr ax, 1 mov bx, ax ; this is temporary interpolation value (L) add ax, [previous_val_l] rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; this is 1st interpolated sample (L) mov ax, [next_val_r] add ax, [previous_val_r] rcr ax, 1 mov bp, ax ; this is interpolated middle (3th) sample (R) add ax, [previous_val_r] rcr ax, 1 push ax ; * ; this is temporary interpolation value (R) add ax, [previous_val_r] rcr ax, 1 sub ah, 80h stosw ; this is 1st interpolated sample (R) mov ax, bx add ax, dx rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; this is 2nd interpolated sample (L) pop ax ; * add ax, bp rcr ax, 1 sub ah, 80h stosw ; this is 2nd interpolated sample (R) mov ax, dx sub ah, 80h stosw ; this is middle (3th) interpolated sample (L) mov ax, bp sub ah, 80h ; -32768 to +32767 format again stosw ; this is middle (3th) interpolated sample (R) mov ax, [next_val_l] add ax, dx rcr ax, 1 mov bx, ax ; this is temporary interpolation value (L) add ax, dx rcr ax, 1 sub ah, 80h stosw ; this is 4th interpolated sample (L) mov ax, [next_val_r] add ax, bp rcr ax, 1 push ax ; ** ; this is temporary interpolation value (R) add ax, bp rcr ax, 1 sub ah, 80h stosw ; this is 4th interpolated sample (R) mov ax, [next_val_l] add ax, bx rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; this is 5th interpolated sample (L) pop ax ; ** add ax, [next_val_r] rcr ax, 1 sub ah, 80h stosw ; this is 5th interpolated sample (R) ; 8 kHZ stereo to 48 kHZ stereo conversion of the sample is OK jcxz lff8_s2_9 jmp lff8s2_1 lff8_s2_9: jmp lff8s2_3 ;----------------------------------------------------------------------------- ;----------------------------------------------------------------------------- load_16khz_mono_8_bit: ; 02/02/2025 ; 14/11/2023 ; 13/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff16m_0 ; no stc retn lff16m_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff16m_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address and ax, ax jnz short lff16m_8 ;jmp lff16m_3 ; 15/11/2023 jmp lff16_eof lff16m_8: mov cx, ax ; byte count lff16m_1: lodsb ;mov [previous_val], al mov bl, al sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (left channel) stosw ; original sample (right channel) ;xor ax, ax ; 02/02/2025 mov al, [si] dec cx jnz short lff16m_2 ; 14/11/2023 mov al, 80h lff16m_2: ;mov [next_val], al mov bh, al ;add al, [previous_val] add al, bl rcr al, 1 mov dl, al ; this is interpolated middle (temp) sample ;add al, [previous_val] add al, bl rcr al, 1 sub al, 80h shl ax, 8 stosw ; this is 1st interpolated sample (L) stosw ; this is 1st interpolated sample (R) ;mov al, [next_val] mov al, bh add al, dl rcr al, 1 sub al, 80h shl ax, 8 stosw ; this is 2nd interpolated sample (L) stosw ; this is 2nd interpolated sample (R) ; 16 kHZ mono to 48 kHZ stereo conversion of the sample is OK or cx, cx jnz short lff16m_1 jmp lff16m_3 lff16m_7: lff16s_7: jmp lff16m_5 ; error ;----------------------------------------------------------------------------- load_16khz_stereo_8_bit: ; 02/02/2025 ; 14/11/2023 ; 13/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff16s_0 ; no stc retn lff16s_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff16s_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address shr ax, 1 ;and ax, ax jnz short lff16s_8 ;jmp lff16s_3 ; 15/11/2023 jmp lff16_eof lff16s_8: mov cx, ax ; word count lff16s_1: lodsb mov [previous_val_l], al sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (L) lodsb mov [previous_val_r], al sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (R) ;xor ax, ax ; 02/02/2025 mov ax, [si] dec cx jnz short lff16s_2 ; convert 8 bit sample to 16 bit sample ; 14/11/2023 mov ax, 8080h lff16s_2: ;mov [next_val_l], al ;mov [next_val_r], ah mov bx, ax add al, [previous_val_l] rcr al, 1 mov dl, al ; this is temporary interpolation value (L) add al, [previous_val_l] rcr al, 1 sub al, 80h shl ax, 8 stosw ; this is 1st interpolated sample (L) mov al, bh ; [next_val_r] add al, [previous_val_r] rcr al, 1 mov dh, al ; this is temporary interpolation value (R) add al, [previous_val_r] rcr al, 1 sub al, 80h shl ax, 8 stosw ; this is 1st interpolated sample (R) mov al, dl add al, bl ; [next_val_l] rcr al, 1 sub al, 80h shl ax, 8 stosw ; this is 2nd interpolated sample (L) mov al, dh add al, bh ; [next_val_r] rcr al, 1 sub al, 80h shl ax, 8 stosw ; this is 2nd interpolated sample (R) ; 16 kHZ stereo to 48 kHZ stereo conversion of the sample is OK or cx, cx jnz short lff16s_1 jmp lff16s_3 ;----------------------------------------------------------------------------- load_16khz_mono_16_bit: ; 02/02/2025 ; 15/11/2023 ; 13/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff16m2_0 ; no stc retn lff16m2_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff16m2_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address shr ax, 1 ;and ax, ax jnz short lff16m2_8 ;jmp lff16m2_3 ; 15/11/2023 jmp lff16_eof lff16m2_8: mov cx, ax ; word count lff16m2_1: lodsw stosw ; original sample (left channel) stosw ; original sample (right channel) add ah, 80h ; convert sound level 0 to 65535 format ;mov [previous_val], ax mov bx, ax ; 02/02/2025 mov ax, [si] dec cx jnz short lff16m2_2 xor ax, ax lff16m2_2: add ah, 80h ; convert sound level 0 to 65535 format mov bp, ax ; [next_val] ;add ax, [previous_val] add ax, bx rcr ax, 1 mov dx, ax ; this is temporary interpolation value ;add ax, [previous_val] add ax, bx rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; this is 1st interpolated sample (L) stosw ; this is 1st interpolated sample (R) mov ax, bp add ax, dx rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; this is 2nd interpolated sample (L) stosw ; this is 2nd interpolated sample (R) ; 16 kHZ mono to 48 kHZ stereo conversion of the sample is OK or cx, cx jnz short lff16m2_1 jmp lff16m2_3 lff16m2_7: lff16s2_7: jmp lff16m2_5 ; error ;----------------------------------------------------------------------------- load_16khz_stereo_16_bit: ; 02/02/2025 ; 16/11/2023 ; 15/11/2023 ; 13/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff16s2_0 ; no stc retn lff16s2_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff16s2_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address ;shr ax, 1 shr ax, 2 ; 16/11/2023 ;and ax, ax jnz short lff16s2_8 ;jmp lff16s2_3 ; 15/11/2023 jmp lff16_eof lff16s2_8: mov cx, ax ; dword count lff16s2_1: lodsw stosw ; original sample (L) add ah, 80h ; convert sound level 0 to 65535 format mov [previous_val_l], ax lodsw stosw ; original sample (R) add ah, 80h ; convert sound level 0 to 65535 format mov [previous_val_r], ax ; 02/02/2025 mov ax, [si] mov dx, [si+2] ; 16/11/2023 dec cx jnz short lff16s2_2 xor dx, dx xor ax, ax lff16s2_2: add ah, 80h ; convert sound level 0 to 65535 format ;mov [next_val_l], ax mov bp, ax add dh, 80h ; convert sound level 0 to 65535 format mov [next_val_r], dx add ax, [previous_val_l] rcr ax, 1 mov dx, ax ; this is temporary interpolation value (L) add ax, [previous_val_l] rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; this is 1st interpolated sample (L) mov ax, [next_val_r] add ax, [previous_val_r] rcr ax, 1 mov bx, ax ; this is temporary interpolation value (R) add ax, [previous_val_r] rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; this is 1st interpolated sample (R) ;mov ax, [next_val_l] mov ax, bp add ax, dx rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; this is 2nd interpolated sample (L) mov ax, [next_val_r] add ax, bx rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; this is 2nd interpolated sample (R) ; 16 kHZ stereo to 48 kHZ stereo conversion of the sample is OK or cx, cx jnz short lff16s2_1 jmp lff16s2_3 ;----------------------------------------------------------------------------- ;----------------------------------------------------------------------------- load_24khz_mono_8_bit: ; 02/02/2025 ; 15/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff24m_0 ; no stc retn lff24m_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff24m_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address and ax, ax jnz short lff24m_8 jmp lff24_eof lff24m_8: mov cx, ax ; byte count lff24m_1: lodsb ;mov [previous_val], al mov bl, al sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (left channel) stosw ; original sample (right channel) ;xor ax, ax ; 02/02/2025 mov al, [si] dec cx jnz short lff24m_2 mov al, 80h lff24m_2: ;;mov [next_val], al ;mov bh, al ;add al, [previous_val] add al, bl rcr al, 1 sub al, 80h shl ax, 8 stosw ; this is interpolated sample (L) stosw ; this is interpolated sample (R) ; 24 kHZ mono to 48 kHZ stereo conversion of the sample is OK or cx, cx jnz short lff24m_1 jmp lff24_3 lff24m_7: lff24s_7: jmp lff24_5 ; error ;----------------------------------------------------------------------------- load_24khz_stereo_8_bit: ; 02/02/2025 ; 15/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff24s_0 ; no stc retn lff24s_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff24s_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address shr ax, 1 ;and ax, ax jnz short lff24s_8 jmp lff24_eof lff24s_8: mov cx, ax ; word count lff24s_1: lodsb mov [previous_val_l], al sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (L) lodsb mov [previous_val_r], al sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (R) ;xor ax, ax ; 02/02/2025 mov ax, [si] dec cx jnz short lff24s_2 ; convert 8 bit sample to 16 bit sample mov ax, 8080h lff24s_2: ;;mov [next_val_l], al ;;mov [next_val_r], ah ;mov bx, ax mov bh, ah add al, [previous_val_l] rcr al, 1 ;mov dl, al sub al, 80h shl ax, 8 stosw ; this is interpolated sample (L) mov al, bh ; [next_val_r] add al, [previous_val_r] rcr al, 1 ;mov dh, al sub al, 80h shl ax, 8 stosw ; this is interpolated sample (R) ; 24 kHZ stereo to 48 kHZ stereo conversion of the sample is OK or cx, cx jnz short lff24s_1 jmp lff24_3 ;----------------------------------------------------------------------------- load_24khz_mono_16_bit: ; 02/02/2025 ; 15/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff24m2_0 ; no stc retn lff24m2_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff24m2_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address shr ax, 1 ;and ax, ax jnz short lff24m2_8 jmp lff24_eof lff24m2_8: mov cx, ax ; word count lff24m2_1: lodsw stosw ; original sample (left channel) stosw ; original sample (right channel) add ah, 80h ; convert sound level 0 to 65535 format ;mov [previous_val], ax ;mov bx, ax ;mov ax, [si ; 02/02/2025 mov bx, [si] dec cx jnz short lff24m2_2 ;xor ax, ax xor bx, bx lff24m2_2: ; 02/02/2025 add bh, 80h ; convert sound level 0 to 65535 format ;add ah, 80h ;mov bp, ax ; [next_val] ;add ax, [previous_val] ; ax = [previous_val] ; bx = [next_val] add ax, bx rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; this is interpolated sample (L) stosw ; this is interpolated sample (R) ; 24 kHZ mono to 48 kHZ stereo conversion of the sample is OK or cx, cx jnz short lff24m2_1 jmp lff24_3 lff24m2_7: lff24s2_7: jmp lff24_5 ; error ;----------------------------------------------------------------------------- load_24khz_stereo_16_bit: ; 02/02/2025 ; 16/11/2023 ; 15/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff24s2_0 ; no stc retn lff24s2_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff24s2_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address ;shr ax, 1 shr ax, 2 ; 16/11/2023 ;and ax, ax jnz short lff24s2_8 jmp lff24_eof lff24s2_8: mov cx, ax ; dword count lff24s2_1: lodsw stosw ; original sample (L) add ah, 80h ; convert sound level 0 to 65535 format mov [previous_val_l], ax lodsw stosw ; original sample (R) add ah, 80h ; convert sound level 0 to 65535 format ;mov [previous_val_r], ax mov bx, ax ; 02/02/2025 mov ax, [si] mov dx, [si+2] ; 16/11/2023 dec cx jnz short lff24s2_2 xor dx, dx xor ax, ax lff24s2_2: add ah, 80h ; convert sound level 0 to 65535 format ;;mov [next_val_l], ax ;mov bp, ax add dh, 80h ; convert sound level 0 to 65535 format ;mov [next_val_r], dx add ax, [previous_val_l] rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; this is interpolated sample (L) ;mov ax, [next_val_r] mov ax, dx ;add ax, [previous_val_r] add ax, bx rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; this is interpolated sample (R) ; 24 kHZ stereo to 48 kHZ stereo conversion of the sample is OK or cx, cx jnz short lff24s2_1 jmp lff24_3 ;----------------------------------------------------------------------------- ;----------------------------------------------------------------------------- load_32khz_mono_8_bit: ; 02/02/2025 ; 15/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff32m_0 ; no stc retn lff32m_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff32m_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address and ax, ax jnz short lff32m_8 jmp lff32_eof lff32m_8: mov cx, ax ; byte count lff32m_1: lodsb ;mov [previous_val], al mov bl, al sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (left channel) stosw ; original sample (right channel) ;xor ax, ax ; 02/02/2025 mov al, [si] dec cx jnz short lff32m_2 mov al, 80h lff32m_2: ;;mov [next_val], al ;mov bh, al ;add al, [previous_val] add al, bl rcr al, 1 sub al, 80h shl ax, 8 stosw ; this is interpolated sample (L) stosw ; this is interpolated sample (R) ; different than 8-16-24 kHZ ! ; 'original-interpolated-original' trio samples jcxz lff32m_3 lodsb sub al, 80h shl ax, 8 stosw ; original sample (left channel) stosw ; original sample (right channel) ; 32 kHZ mono to 48 kHZ stereo conversion of the sample is OK dec cx jnz short lff32m_1 lff32m_3: jmp lff32_3 lff32m_7: lff32s_7: jmp lff32_5 ; error ;----------------------------------------------------------------------------- load_32khz_stereo_8_bit: ; 02/02/2025 ; 15/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff32s_0 ; no stc retn lff32s_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff32s_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address shr ax, 1 ;and ax, ax jnz short lff32s_8 jmp lff32_eof lff32s_8: mov cx, ax ; word count lff32s_1: lodsb mov [previous_val_l], al sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (L) lodsb mov [previous_val_r], al sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (R) ; 02/02/2025 mov ax, [si] dec cx jnz short lff32s_2 ; convert 8 bit sample to 16 bit sample ;xor ax, ax mov ax, 8080h lff32s_2: ;;mov [next_val_l], al ;;mov [next_val_r], ah ;mov bx, ax mov bh, ah add al, [previous_val_l] rcr al, 1 ;mov dl, al sub al, 80h shl ax, 8 stosw ; this is interpolated sample (L) mov al, bh ; [next_val_r] add al, [previous_val_r] rcr al, 1 ;mov dh, al sub al, 80h shl ax, 8 stosw ; this is interpolated sample (R) ; different than 8-16-24 kHZ ! ; 'original-interpolated-original' trio samples jcxz lff32s_3 lodsb sub al, 80h shl ax, 8 stosw ; original sample (left channel) lodsb sub al, 80h shl ax, 8 stosw ; original sample (right channel) ; 32 kHZ stereo to 48 kHZ stereo conversion of the sample is OK dec cx jnz short lff32s_1 lff32s_3: jmp lff32_3 ;----------------------------------------------------------------------------- load_32khz_mono_16_bit: ; 02/02/2025 ; 15/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff32m2_0 ; no stc retn lff32m2_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff32m2_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address shr ax, 1 ;and ax, ax jnz short lff32m2_8 jmp lff32_eof lff32m2_8: mov cx, ax ; word count lff32m2_1: lodsw stosw ; original sample (left channel) stosw ; original sample (right channel) add ah, 80h ; convert sound level 0 to 65535 format ;mov [previous_val], ax ;mov bx, ax ; 02/02/2025 ;mov ax, [si] mov bx, [si] dec cx jnz short lff32m2_2 ;xor ax, ax xor bx, bx lff32m2_2: ; 02/02/2025 add bh, 80h ; convert sound level 0 to 65535 format ;add ah, 80h ;mov bp, ax ; [next_val] ;add ax, [previous_val] ; ax = [previous_val] ; bx = [next_val] add ax, bx rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; this is interpolated sample (L) stosw ; this is interpolated sample (R) ; different than 8-16-24 kHZ ! ; 'original-interpolated-original' trio samples jcxz lff32m2_3 lodsw stosw ; original sample (left channel) stosw ; original sample (right channel) ; 32 kHZ mono to 48 kHZ stereo conversion of the sample is OK dec cx jnz short lff32m2_1 lff32m2_3: jmp lff32_3 lff32m2_7: lff32s2_7: jmp lff32_5 ; error ;----------------------------------------------------------------------------- load_32khz_stereo_16_bit: ; 02/02/2025 ; 16/11/2023 ; 15/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff32s2_0 ; no stc retn lff32s2_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff32s2_7 ; error ! mov si, dx ; temp_buffer ; temporary buffer address shr ax, 2 ; 16/11/2023 (word left ch + word right ch) ;and ax, ax jnz short lff32s2_8 jmp lff32_eof lff32s2_8: mov cx, ax ; dword count lff32s2_1: lodsw stosw ; original sample (L) add ah, 80h ; convert sound level 0 to 65535 format mov [previous_val_l], ax lodsw stosw ; original sample (R) add ah, 80h ; convert sound level 0 to 65535 format ;mov [previous_val_r], ax mov bx, ax ; 02/02/2025 mov ax, [si] mov dx, [si+2] ; 16/11/2023 dec cx jnz short lff32s2_2 xor dx, dx xor ax, ax lff32s2_2: add ah, 80h ; convert sound level 0 to 65535 format ;;mov [next_val_l], ax ;mov bp, ax add dh, 80h ; convert sound level 0 to 65535 format ;mov [next_val_r], dx add ax, [previous_val_l] rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; this is interpolated sample (L) ;mov ax, [next_val_r] mov ax, dx ;add ax, [previous_val_r] add ax, bx rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; this is interpolated sample (R) ; different than 8-16-24 kHZ ! ; 'original-interpolated-original' trio samples jcxz lff32s2_3 lodsw stosw ; original sample (L) lodsw stosw ; original sample (R) ; 32 kHZ stereo to 48 kHZ stereo conversion of the sample is OK dec cx jnz short lff32s2_1 lff32s2_3: jmp lff32_3 ;----------------------------------------------------------------------------- ;----------------------------------------------------------------------------- load_22khz_mono_8_bit: ; 02/02/2025 ; 16/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff22m_0 ; no stc retn lff22m_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff22m_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address and ax, ax jnz short lff22m_8 jmp lff22_eof lff22m_8: mov cx, ax ; byte count lff22m_9: mov bp, 5 ; interpolation (one step) loop count mov byte [faz], 3 ; 3 steps/phases lff22m_1: ; 3:2:2:2:2:2::3:2:2:2:2::3:2:2:2:2:2 ; 37/17 lodsb ; 02/02/2025 mov dl, [si] dec cx jnz short lff22m_2_1 mov dl, 80h lff22m_2_1: ; al = [previous_val] ; dl = [next_val] call interpolating_3_8bit_mono ; 1 of 17 jcxz lff22m_3 lff22m_2_2: lodsb ; 02/02/2025 mov dl, [si] dec cx jnz short lff22m_2_3 mov dl, 80h lff22m_2_3: call interpolating_2_8bit_mono ; 2 of 17 .. 6 of 17 jcxz lff22m_3 dec bp jnz short lff22m_2_2 mov al, [faz] dec al jz short lff22m_9 dec byte [faz] mov bp, 4 dec al jnz short lff22m_1 ; 3:2:2:2:2 ; 7-11 of 17 inc bp ; 5 jmp short lff22m_1 ; 3:2:2:2:2:2 ; 12-17 of 17 lff22m_3: lff22s_3: jmp lff22_3 ; padfill ; (put zeros in the remain words of the buffer) lff22m_7: lff22s_7: jmp lff22_5 ; error ;----------------------------------------------------------------------------- load_22khz_stereo_8_bit: ; 02/02/2025 ; 16/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff22s_0 ; no stc retn lff22s_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff22s_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address shr ax, 1 ;and ax, ax jnz short lff22s_8 jmp lff22_eof lff22s_8: mov cx, ax ; word count lff22s_9: mov bp, 5 ; interpolation (one step) loop count mov byte [faz], 3 ; 3 steps/phase lff22s_1: ; 3:2:2:2:2:2::3:2:2:2:2::3:2:2:2:2:2 ; 37/17 lodsw ; 02/02/2025 mov dx, [si] dec cx jnz short lff22s_2_1 mov dx, 8080h lff22s_2_1: ; al = [previous_val_l] ; ah = [previous_val_r] ; dl = [next_val_l] ; dl = [next_val_r] call interpolating_3_8bit_stereo ; 1 of 17 jcxz lff22s_3 lff22s_2_2: lodsw ; 02/02/2025 mov dx, [si] dec cx jnz short lff22s_2_3 mov dx, 8080h lff22s_2_3: call interpolating_2_8bit_stereo ; 2 of 17 .. 6 of 17 jcxz lff22s_3 dec bp jnz short lff22s_2_2 mov al, [faz] dec al jz short lff22s_9 dec byte [faz] mov bp, 4 dec al jnz short lff22s_1 ; 3:2:2:2:2 ; 7-11 of 17 inc bp ; 5 jmp short lff22s_1 ; 3:2:2:2:2:2 ; 12-17 of 17 ;----------------------------------------------------------------------------- load_22khz_mono_16_bit: ; 02/02/2025 ; 16/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff22m2_0 ; no stc retn lff22m2_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff22m2_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address shr ax, 1 ;and ax, ax jnz short lff22m2_8 jmp lff22_eof lff22m2_8: mov cx, ax ; word count lff22m2_9: mov bp, 5 ; interpolation (one step) loop count mov byte [faz], 3 ; 3 steps/phases lff22m2_1: ; 3:2:2:2:2:2::3:2:2:2:2::3:2:2:2:2:2 ; 37/17 lodsw ; 02/02/2025 mov dx, [si] dec cx jnz short lff22m2_2_1 xor dx, dx lff22m2_2_1: ; ax = [previous_val] ; dx = [next_val] call interpolating_3_16bit_mono ; 1 of 17 jcxz lff22m2_3 lff22m2_2_2: lodsw ; 02/02/2025 mov dx, [si] dec cx jnz short lff22m2_2_3 xor dx, dx lff22m2_2_3: call interpolating_2_16bit_mono ; 2 of 17 .. 6 of 17 jcxz lff22m2_3 dec bp jnz short lff22m2_2_2 mov al, [faz] dec al jz short lff22m2_9 dec byte [faz] mov bp, 4 dec al jnz short lff22m2_1 ; 3:2:2:2:2 ; 7-11 of 17 inc bp ; 5 jmp short lff22m2_1 ; 3:2:2:2:2:2 ; 12-17 of 17 lff22m2_3: lff22s2_3: jmp lff22_3 ; padfill ; (put zeros in the remain words of the buffer) lff22m2_7: lff22s2_7: jmp lff22_5 ; error ;----------------------------------------------------------------------------- load_22khz_stereo_16_bit: ; 16/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff22s2_0 ; no stc retn lff22s2_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff22s2_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address shr ax, 2 ; dword (left chan word + right chan word) ;and ax, ax jnz short lff22s2_8 jmp lff22_eof lff22s2_8: mov cx, ax ; dword count lff22s2_9: mov bp, 5 ; interpolation (one step) loop count mov byte [faz], 3 ; 3 steps/phase lff22s2_1: ; 3:2:2:2:2:2::3:2:2:2:2::3:2:2:2:2:2 ; 37/17 lodsw mov bx, ax lodsw mov dx, [si] mov [next_val_l], dx mov dx, [si+2] dec cx jnz short lff22s2_2_1 xor dx, dx ; 0 mov [next_val_l], dx lff22s2_2_1: ; bx = [previous_val_l] ; ax = [previous_val_r] ; [next_val_l] ; dx = [next_val_r] call interpolating_3_16bit_stereo ; 1 of 17 jcxz lff22s2_3 lff22s2_2_2: lodsw mov bx, ax lodsw mov dx, [si] mov [next_val_l], dx mov dx, [si+2] dec cx jnz short lff22s2_2_3 xor dx, dx ; 0 mov [next_val_l], dx lff22s2_2_3: call interpolating_2_16bit_stereo ; 2 of 17 .. 6 of 17 jcxz lff22s2_3 dec bp jnz short lff22s2_2_2 mov al, [faz] dec al jz short lff22s2_9 dec byte [faz] mov bp, 4 dec al jnz short lff22s2_1 ; 3:2:2:2:2 ; 7-11 of 17 inc bp ; 5 jmp short lff22s2_1 ; 3:2:2:2:2:2 ; 12-17 of 17 ;----------------------------------------------------------------------------- ;----------------------------------------------------------------------------- load_11khz_mono_8_bit: ; 18/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff11m_0 ; no stc retn lff11m_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff11m_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address and ax, ax jnz short lff11m_8 jmp lff11_eof lff11m_8: mov cx, ax ; byte count lff11m_9: mov bp, 6 ; interpolation (one step) loop count lff11m_1: ; 5:4:4::5:4:4::5:4:4::5:4:4::5:4:4::5:4 ; 74/17 lodsb ; 02/02/2025 mov dl, [si] dec cx jnz short lff11m_2_1 mov dl, 80h lff11m_2_1: ; al = [previous_val] ; dl = [next_val] call interpolating_5_8bit_mono jcxz lff11m_3 lff11m_2_2: lodsb ; 02/02/2025 mov dl, [si] dec cx jnz short lff11m_2_3 mov dl, 80h lff11m_2_3: call interpolating_4_8bit_mono jcxz lff11m_3 dec bp jz short lff11m_9 lodsb ; 02/02/2025 mov dl, [si] dec cx jnz short lff11m_2_4 mov dl, 80h lff11m_2_4: call interpolating_4_8bit_mono jcxz lff11m_3 jmp short lff11m_1 lff11m_3: lff11s_3: jmp lff11_3 ; padfill ; (put zeros in the remain words of the buffer) lff11m_7: lff11s_7: jmp lff11_5 ; error ;----------------------------------------------------------------------------- load_11khz_stereo_8_bit: ; 02/02/2025 ; 18/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff11s_0 ; no stc retn lff11s_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff11s_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address shr ax, 1 ;and ax, ax jnz short lff11s_8 jmp lff11_eof lff11s_8: mov cx, ax ; word count lff11s_9: mov bp, 6 ; interpolation (one step) loop count lff11s_1: ; 5:4:4::5:4:4::5:4:4::5:4:4::5:4:4::5:4 ; 74/17 lodsw ; 02/02/2025 mov dx, [si] dec cx jnz short lff11s_2_1 mov dx, 8080h lff11s_2_1: ; al = [previous_val_l] ; ah = [previous_val_r] ; dl = [next_val_l] ; dl = [next_val_r] call interpolating_5_8bit_stereo jcxz lff11s_3 lff11s_2_2: lodsw ; 02/02/2025 mov dx, [si] dec cx jnz short lff11s_2_3 mov dx, 8080h lff11s_2_3: call interpolating_4_8bit_stereo jcxz lff11s_3 dec bp jz short lff11s_9 lodsw ; 02/02/2025 mov dx, [si] dec cx jnz short lff11s_2_4 mov dx, 8080h lff11s_2_4: call interpolating_4_8bit_stereo jcxz lff11s_3 jmp short lff11s_1 ;----------------------------------------------------------------------------- load_11khz_mono_16_bit: ; 02/02/2025 ; 18/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff11m2_0 ; no stc retn lff11m2_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff11m2_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address shr ax, 1 ;and ax, ax jnz short lff11m2_8 jmp lff11_eof lff11m2_8: mov cx, ax ; word count lff11m2_9: mov bp, 6 ; interpolation (one step) loop count lff11m2_1: ; 5:4:4::5:4:4::5:4:4::5:4:4::5:4:4::5:4 ; 74/17 lodsw ; 02/02/2025 mov dx, [si] dec cx jnz short lff11m2_2_1 xor dx, dx lff11m2_2_1: ; ax = [previous_val] ; dx = [next_val] call interpolating_5_16bit_mono jcxz lff11m2_3 lff11m2_2_2: lodsw ; 02/02/2025 mov dx, [si] dec cx jnz short lff11m2_2_3 xor dx, dx lff11m2_2_3: call interpolating_4_16bit_mono jcxz lff11m2_3 dec bp jz short lff11m2_9 lodsw ; 02/02/2025 mov dx, [si] dec cx jnz short lff11m2_2_4 xor dx, dx lff11m2_2_4: call interpolating_4_16bit_mono jcxz lff11m2_3 jmp short lff11m2_1 lff11m2_7: lff11s2_7: jmp lff11_5 ; error ;----------------------------------------------------------------------------- load_11khz_stereo_16_bit: ; 18/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff11s2_0 ; no stc retn lff11s2_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff11s2_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address shr ax, 2 ; dword (left chan word + right chan word) ;and ax, ax jnz short lff11s2_8 jmp lff11_eof lff11m2_3: lff11s2_3: jmp lff11_3 ; padfill ; (put zeros in the remain words of the buffer) lff11s2_8: mov cx, ax ; dword count lff11s2_9: mov bp, 6 ; interpolation (one step) loop count lff11s2_1: ; 5:4:4::5:4:4::5:4:4::5:4:4::5:4:4::5:4 ; 74/17 lodsw mov bx, ax lodsw mov dx, [si] mov [next_val_l], dx mov dx, [si+2] mov [next_val_r], dx dec cx jnz short lff11s2_2_1 xor dx, dx ; 0 mov [next_val_l], dx mov [next_val_r], dx lff11s2_2_1: ; bx = [previous_val_l] ; ax = [previous_val_r] ; [next_val_l] ; dx = [next_val_r] call interpolating_5_16bit_stereo jcxz lff11s2_3 lff11s2_2_2: lodsw mov bx, ax lodsw mov dx, [si] mov [next_val_l], dx mov dx, [si+2] mov [next_val_r], dx dec cx jnz short lff11s2_2_3 xor dx, dx ; 0 mov [next_val_l], dx mov [next_val_r], dx lff11s2_2_3: call interpolating_4_16bit_stereo jcxz lff11s2_3 dec bp jz short lff11s2_9 lodsw mov bx, ax lodsw mov dx, [si] mov [next_val_l], dx mov dx, [si+2] mov [next_val_r], dx dec cx jnz short lff11s2_2_4 xor dx, dx ; 0 mov [next_val_l], dx mov [next_val_r], dx lff11s2_2_4: call interpolating_4_16bit_stereo jcxz lff11s2_3 jmp short lff11s2_1 ;----------------------------------------------------------------------------- ;----------------------------------------------------------------------------- load_44khz_mono_8_bit: ; 02/02/2025 ; 18/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff44m_0 ; no stc retn lff44m_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff44m_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address and ax, ax jnz short lff44m_8 jmp lff44_eof lff44m_8: mov cx, ax ; byte count lff44m_9: mov bp, 10 ; interpolation (one step) loop count mov byte [faz], 2 ; 2 steps/phases lff44m_1: ; 2:1:1:1:1:1:1:1:1:1:1:: ; 25/23 ; 2:1:1:1:1:1:1:1:1:1:1:1 lodsb ; 02/02/2025 mov dl, [si] dec cx jnz short lff44m_2_1 mov dl, 80h lff44m_2_1: ; al = [previous_val] ; dl = [next_val] call interpolating_2_8bit_mono jcxz lff44m_3 lff44m_2_2: lodsb sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; (L) stosw ; (R) dec cx jz short lff44m_3 dec bp jnz short lff44m_2_2 dec byte [faz] jz short lff44m_9 mov bp, 11 jmp short lff44m_1 lff44m_3: lff44s_3: jmp lff44_3 ; padfill ; (put zeros in the remain words of the buffer) lff44m_7: lff44s_7: jmp lff44_5 ; error ;----------------------------------------------------------------------------- load_44khz_stereo_8_bit: ; 02/02/2025 ; 16/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff44s_0 ; no stc retn lff44s_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff44s_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address shr ax, 1 ;and ax, ax jnz short lff44s_8 jmp lff44_eof lff44s_8: mov cx, ax ; word count lff44s_9: mov bp, 10 ; interpolation (one step) loop count mov byte [faz], 2 ; 2 steps/phase lff44s_1: ; 2:1:1:1:1:1:1:1:1:1:1:: ; 25/23 ; 2:1:1:1:1:1:1:1:1:1:1:1 lodsw ; 02/02/2025 mov dx, [si] dec cx jnz short lff44s_2_1 mov dx, 8080h lff44s_2_1: ; al = [previous_val_l] ; ah = [previous_val_r] ; dl = [next_val_l] ; dl = [next_val_r] call interpolating_2_8bit_stereo jcxz lff44s_3 lff44s_2_2: lodsb sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; (L) lodsb sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; (R) dec cx jz short lff44s_3 dec bp jnz short lff44s_2_2 dec byte [faz] jz short lff44s_9 mov bp, 11 jmp short lff44s_1 ;----------------------------------------------------------------------------- load_44khz_mono_16_bit: ; 02/02/2025 ; 18/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff44m2_0 ; no stc retn lff44m2_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff44m2_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address shr ax, 1 ;and ax, ax jnz short lff44m2_8 jmp lff44_eof lff44m2_8: mov cx, ax ; word count lff44m2_9: mov bp, 10 ; interpolation (one step) loop count mov byte [faz], 2 ; 2 steps/phases lff44m2_1: ; 2:1:1:1:1:1:1:1:1:1:1:: ; 25/23 ; 2:1:1:1:1:1:1:1:1:1:1:1 lodsw ; 02/02/2025 mov dx, [si] dec cx jnz short lff44m2_2_1 xor dx, dx lff44m2_2_1: ; ax = [previous_val] ; dx = [next_val] call interpolating_2_16bit_mono jcxz lff44m2_3 lff44m2_2_2: lodsw stosw ; (L)eft Channel stosw ; (R)ight Channel dec cx jz short lff44m2_3 dec bp jnz short lff44m2_2_2 dec byte [faz] jz short lff44m2_9 mov bp, 11 jmp short lff44m2_1 lff44m2_3: lff44s2_3: jmp lff44_3 ; padfill ; (put zeros in the remain words of the buffer) lff44m2_7: lff44s2_7: jmp lff44_5 ; error ;----------------------------------------------------------------------------- load_44khz_stereo_16_bit: ; 18/11/2023 test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff44s2_0 ; no stc retn lff44s2_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff44s2_7 ; error ! ; 14/11/2024 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address shr ax, 2 ; dword (left chan word + right chan word) ;and ax, ax jnz short lff44s2_8 jmp lff44_eof lff44s2_8: mov cx, ax ; dword count lff44s2_9: mov bp, 10 ; interpolation (one step) loop count mov byte [faz], 2 ; 2 steps/phase lff44s2_1: ; 2:1:1:1:1:1:1:1:1:1:1:: ; 25/23 ; 2:1:1:1:1:1:1:1:1:1:1:1 lodsw mov bx, ax lodsw mov dx, [si] mov [next_val_l], dx mov dx, [si+2] dec cx jnz short lff44s2_2_1 xor dx, dx ; 0 mov [next_val_l], dx lff44s2_2_1: ; bx = [previous_val_l] ; ax = [previous_val_r] ; [next_val_l] ; dx = [next_val_r] call interpolating_2_16bit_stereo jcxz lff44s2_3 lff44s2_2_2: ;lodsw ;stosw ; (L) ;lodsw ;stosw ; (R) movsw ; (L)eft Channel movsw ; (R)ight Channel dec cx jz short lff44s2_3 dec bp jnz short lff44s2_2_2 dec byte [faz] jz short lff44s2_9 mov bp, 11 jmp short lff44s2_1 ;----------------------------------------------------------------------------- ;----------------------------------------------------------------------------- ; 02/02/2025 load_12khz_mono_8_bit: test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff12m_0 ; no stc retn lff12m_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff12m_7 ; error ! ; 02/02/2025 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address and ax, ax jnz short lff12m_8 jmp lff12_eof lff12m_8: mov cx, ax ; byte count lff12m_1: ; original-interpolated-interpolated-interpolated lodsb ; 02/02/2025 mov dl, [si] dec cx jnz short lff12m_2 mov dl, 80h lff12m_2: ; al = [previous_val] ; dl = [next_val] call interpolating_4_8bit_mono jcxz lff12m_3 jmp short lff12m_1 ;----------------------------------------------------------------------------- ; 02/02/2025 load_12khz_stereo_8_bit: test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff12s_0 ; no stc retn lff12s_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff12s_7 ; error ! ; 02/02/2025 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address shr ax, 1 ;and ax, ax jnz short lff12s_8 jmp lff12_eof lff12m_7: lff12s_7: jmp lff12_5 ; error lff12s_8: mov cx, ax ; word count lff12s_1: ; original-interpolated-interpolated-interpolated lodsw ; 02/02/2025 mov dx, [si] dec cx jnz short lff12s_2 mov dx, 8080h lff12s_2: ; al = [previous_val_l] ; ah = [previous_val_r] ; dl = [next_val_l] ; dh = [next_val_r] call interpolating_4_8bit_stereo jecxz lff12s_3 jmp short lff12s_1 lff12m_3: lff12s_3: jmp lff12_3 ; padfill ; (put zeros in the remain words of the buffer) ;----------------------------------------------------------------------------- ; 02/02/2025 load_12khz_mono_16_bit: test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff12m2_0 ; no stc retn lff12m2_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff12m2_7 ; error ! ; 02/02/2025 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address shr ax, 1 ;and ax, ax jnz short lff12m2_8 jmp lff12_eof lff12m2_8: mov cx, ax ; word count lff12m2_1: ; original-interpolated-interpolated-interpolated lodsw ; 02/02/2025 mov dx, [si] dec cx jnz short lff12m2_2 xor dx, dx lff12m2_2: ; ax = [previous_val] ; dx = [next_val] call interpolating_4_16bit_mono jecxz lff12m_3 jmp short lff12m2_1 lff12m2_7: lff12s2_7: jmp lff12_5 ; error ;----------------------------------------------------------------------------- ; 02/02/2025 load_12khz_stereo_16_bit: test byte [flags], ENDOFFILE ; have we already read the ; last of the file? jz short lff12s2_0 ; no stc retn lff12s2_0: mov es, ax ; buffer segment xor di, di mov dx, temp_buffer ; temporary buffer for wav data ; ds = cs ; load file into memory mov cx, [loadsize] mov bx, [FileHandle] mov ah, 3Fh int 21h jc short lff12s2_7 ; error ! ; 02/02/2025 mov [count], ax mov si, dx ; temp_buffer ; temporary buffer address shr ax, 2 ; dword (left chan word + right chan word) ;and ax, ax jnz short lff12s2_8 jmp lff12_eof lff12m2_3: lff12s2_3: jmp lff12_3 ; padfill ; (put zeros in the remain words of the buffer) lff12s2_8: mov cx, ax ; dword count lff12s2_1: ; original-interpolated-interpolated-interpolated lodsw mov bx, ax lodsw ; 02/02/2025 mov dx, [si] mov [next_val_l], dx mov dx, [si+2] mov [next_val_r], dx dec cx jnz short lff12s2_2 xor dx, dx ; 0 mov [next_val_l], dx mov [next_val_r], dx lff12s2_2: ; bx = [previous_val_l] ; ax = [previous_val_r] ; [next_val_l] ; [next_val_r] call interpolating_4_16bit_stereo jecxz lff12s2_3 jmp short lff12s2_1 ;----------------------------------------------------------------------------- ;----------------------------------------------------------------------------- interpolating_3_8bit_mono: ; 02/02/2025 ; 16/11/2023 ; al = [previous_val] ; dl = [next_val] ; original-interpolated-interpolated mov bl, al sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (L) stosw ; original sample (R) mov al, bl add al, dl rcr al, 1 mov bh, al ; interpolated middle (temporary) add al, bl rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 1 (L) stosw ; interpolated sample 1 (R) mov al, bh add al, dl ; [next_val] rcr al, 1 ; 02/02/2025 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 2 (L) stosw ; interpolated sample 2 (R) retn ;----------------------------------------------------------------------------- interpolating_3_8bit_stereo: ; 02/02/2025 ; 16/11/2023 ; al = [previous_val_l] ; ah = [previous_val_r] ; dl = [next_val_l] ; dh = [next_val_r] ; original-interpolated-interpolated mov bx, ax sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (L) mov al, bh sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (R) mov al, bl add al, dl ; [next_val_l] rcr al, 1 push ax ; * ; al = interpolated middle (L) (temporary) add al, bl ; [previous_val_l] rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 1 (L) mov al, bh add al, dh ; [next_val_r] rcr al, 1 push ax ; ** ; al = interpolated middle (R) (temporary) add al, bh ; [previous_val_r] rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 1 (R) pop bx ; ** pop ax ; * add al, dl ; [next_val_l] rcr al, 1 ; 02/02/2025 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 2 (L) mov al, bl add al, dh ; [next_val_r] rcr al, 1 ; 02/02/2025 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 2 (R) retn ;----------------------------------------------------------------------------- interpolating_2_8bit_mono: ; 16/11/2023 ; al = [previous_val] ; dl = [next_val] ; original-interpolated mov bl, al sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (L) stosw ; original sample (R) mov al, bl add al, dl rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample (L) stosw ; interpolated sample (R) retn ;----------------------------------------------------------------------------- interpolating_2_8bit_stereo: ; 16/11/2023 ; al = [previous_val_l] ; ah = [previous_val_r] ; dl = [next_val_l] ; dh = [next_val_r] ; original-interpolated mov bx, ax sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (L) mov al, bh sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (R) mov al, bl ; [previous_val_l] add al, dl ; [next_val_l] rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample (L) mov al, bh add al, dh ; [next_val_r] rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample (R) retn ;----------------------------------------------------------------------------- interpolating_3_16bit_mono: ; 16/11/2023 ; ax = [previous_val] ; dx = [next_val] ; original-interpolated-interpolated stosw ; original sample (L) stosw ; original sample (R) add ah, 80h ; convert sound level 0 to 65535 format push ax ; * ; [previous_val] add dh, 80h add ax, dx rcr ax, 1 pop bx ; * xchg bx, ax ; bx = interpolated middle (temporary) add ax, bx ; [previous_val] + interpolated middle rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 1 (L) stosw ; interpolated sample 1 (R) mov ax, bx add ax, dx ;interpolated middle + [next_val] rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 2 (L) stosw ; interpolated sample 2 (R) retn ;----------------------------------------------------------------------------- interpolating_3_16bit_stereo: ; 16/11/2023 ; bx = [previous_val_l] ; ax = [previous_val_r] ; [next_val_l] ; dx = [next_val_r] ; original-interpolated-interpolated xchg ax, bx stosw ; original sample (L) xchg ax, bx stosw ; original sample (R) add ah, 80h ; convert sound level 0 to 65535 format push ax ; * ; [previous_val_r] add bh, 80h add byte [next_val_l+1], 80h mov ax, [next_val_l] add ax, bx ; [previous_val_l] rcr ax, 1 xchg ax, bx ; ax = [previous_val_l] add ax, bx ; bx = interpolated middle (L) rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 1 (L) pop ax ; * add dh, 80h ; convert sound level 0 to 65535 format push dx ; * ; [next_val_r] xchg ax, dx add ax, dx ; [next_val_r] + [previous_val_r] rcr ax, 1 ; / 2 push ax ; ** ; interpolated middle (R) add ax, dx ; + [previous_val_r] rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 1 (R) mov ax, [next_val_l] add ax, bx ; + interpolated middle (L) rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 2 (L) pop ax ; ** pop dx ; * add ax, dx ; interpolated middle + [next_val_r] rcr ax, 1 ; / 2 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 2 (L) retn ;----------------------------------------------------------------------------- interpolating_2_16bit_mono: ; 16/11/2023 ; ax = [previous_val] ; dx = [next_val] ; original-interpolated stosw ; original sample (L) stosw ; original sample (R) add ah, 80h ; convert sound level 0 to 65535 format add dh, 80h add ax, dx rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample (L) stosw ; interpolated sample (R) retn ;----------------------------------------------------------------------------- interpolating_2_16bit_stereo: ; 16/11/2023 ; bx = [previous_val_l] ; ax = [previous_val_r] ; [next_val_l] ; dx = [next_val_r] ; original-interpolated xchg ax, bx stosw ; original sample (L) xchg ax, bx stosw ; original sample (R) add ah, 80h ; convert sound level 0 to 65535 format add dh, 80h add ax, dx ; [previous_val_r] + [next_val_r] rcr ax, 1 ; / 2 push ax ; * ; interpolated sample (R) mov ax, [next_val_l] add ah, 80h add bh, 80h add ax, bx ; [next_val_l] + [previous_val_l] rcr ax, 1 ; / 2 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample (L) pop ax ; * sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample (R) retn ;----------------------------------------------------------------------------- interpolating_5_8bit_mono: ; 17/11/2023 ; al = [previous_val] ; dl = [next_val] ; original-interpltd-interpltd-interpltd-interpltd mov bl, al sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (L) stosw ; original sample (R) mov al, bl add al, dl rcr al, 1 mov bh, al ; interpolated middle (temporary) add al, bl ; [previous_val] rcr al, 1 mov dh, al ; interpolated 1st quarter (temporary) add al, bl rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 1 (L) stosw ; interpolated sample 1 (R) mov al, bh add al, dh rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 2 (L) stosw ; interpolated sample 2 (R) mov al, bh add al, dl ; [next_val] rcr al, 1 mov dh, al ; interpolated 3rd quarter (temporary) add al, bh rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 3 (L) stosw ; interpolated sample 3 (R) mov al, dh add al, dl rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 4 (L) stosw ; interpolated sample 4 (R) retn ;----------------------------------------------------------------------------- interpolating_5_8bit_stereo: ; 17/11/2023 ; al = [previous_val_l] ; ah = [previous_val_r] ; dl = [next_val_l] ; dh = [next_val_r] ; original-interpltd-interpltd-interpltd-interpltd mov bx, ax sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (L) mov al, bh sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (R) push dx ; * mov al, bl add al, dl ; [next_val_l] rcr al, 1 push ax ; ** ; al = interpolated middle (L) (temporary) add al, bl ; [previous_val_l] rcr al, 1 xchg al, bl add al, bl ; bl = interpolated 1st quarter (L) (temp) rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 1 (L) mov al, bh add al, dh ; [next_val_r] rcr al, 1 push ax ; *** ; al = interpolated middle (R) (temporary) add al, bh ; [previous_val_r] rcr al, 1 xchg al, bh add al, bh ; bh = interpolated 1st quarter (R) (temp) rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 1 (R) pop dx ; *** pop ax ; ** ; al = interpolated middle (L) (temporary) xchg al, bl ; al = interpolated 1st quarter (L) (temp) add al, bl ; bl = interpolated middle (L) (temporary) rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 2 (L) mov al, dl ; interpolated middle (R) (temporary) xchg al, bh ; al = interpolated 1st quarter (R) (temp) add al, bh ; bh = interpolated middle (R) (temporary) rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 2 (R) pop dx ; * mov al, bl ; interpolated middle (L) (temporary) add al, dl ; [next_val_l] rcr al, 1 xchg al, bl ; al = interpolated middle (R) (temporary) add al, bl ; bl = interpolated 3rd quarter (L) (temp) rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 3 (L) mov al, bh add al, dh ; interpolated middle (R) + [next_val_r] rcr al, 1 xchg al, bh ; al = interpolated middle (R) add al, bh ; bh = interpolated 3rd quarter (R) (temp) rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 3 (R) mov al, bl add al, dl ; [next_val_l] rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 4 (L) mov al, bh add al, dh ; [next_val_r] rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 4 (R) retn ;----------------------------------------------------------------------------- interpolating_4_8bit_mono: ; 17/11/2023 ; al = [previous_val] ; dl = [next_val] ; original-interpolated-interpolated-interpolated mov bl, al sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (L) stosw ; original sample (R) mov al, bl add al, dl rcr al, 1 xchg al, bl ; al = [previous_val] add al, bl ; bl = interpolated middle (sample 2) rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 1 (L) stosw ; interpolated sample 1 (R) mov al, bl ; interpolated middle (sample 2) sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 2 (L) stosw ; interpolated sample 2 (R) mov al, bl add al, dl ; [next_val] rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 3 (L) stosw ; interpolated sample 3 (R) retn ;----------------------------------------------------------------------------- interpolating_4_8bit_stereo: ; 17/11/2023 ; al = [previous_val_l] ; ah = [previous_val_r] ; dl = [next_val_l] ; dh = [next_val_r] ; original-interpolated-interpolated-interpolated mov bx, ax sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (L) mov al, bh sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; original sample (R) mov al, bl add al, dl ; [next_val_l] rcr al, 1 xchg al, bl ; al = [previous_val_l] add al, bl ; bl = interpolated middle (L) (sample 2) rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 1 (L) mov al, bh add al, dh ; [next_val_r] rcr al, 1 xchg al, bh ; al = [previous_val_h] add al, bh ; bh = interpolated middle (R) (sample 2) rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 1 (R) mov al, bl ; interpolated middle (L) (sample 2) sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 2 (L) mov al, bh ; interpolated middle (L) (sample 2) sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 2 (L) mov al, bl add al, dl ; [next_val_l] rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 3 (L) mov al, bh add al, dh ; [next_val_r] rcr al, 1 sub al, 80h shl ax, 8 ; convert 8 bit sample to 16 bit sample stosw ; interpolated sample 3 (R) retn ;----------------------------------------------------------------------------- interpolating_5_16bit_mono: ; 18/11/2023 ; ax = [previous_val] ; dx = [next_val] ; original-interpltd-interpltd-interpltd-interpltd stosw ; original sample (L) stosw ; original sample (R) add ah, 80h ; convert sound level 0 to 65535 format mov bx, ax ; [previous_val] add dh, 80h add ax, dx rcr ax, 1 push ax ; * ; interpolated middle (temporary) add ax, bx ; interpolated middle + [previous_val] rcr ax, 1 push ax ; ** ; interpolated 1st quarter (temporary) add ax, bx ; 1st quarter + [previous_val] rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 1 (L) stosw ; interpolated sample 1 (R) pop ax ; ** pop bx ; * add ax, bx ; 1st quarter + middle rcr ax, 1 ; / 2 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 2 (L) stosw ; interpolated sample 2 (R) mov ax, bx add ax, dx ; interpolated middle + [next_val] rcr ax, 1 push ax ; * ; interpolated 3rd quarter (temporary) add ax, bx ; + interpolated middle rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 3 (L) stosw ; interpolated sample 3 (R) pop ax ; * add ax, dx ; 3rd quarter + [next_val] rcr ax, 1 ; / 2 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 4 (L) stosw ; interpolated sample 4 (R) retn ;----------------------------------------------------------------------------- interpolating_5_16bit_stereo: ; 18/11/2023 ; bx = [previous_val_l] ; ax = [previous_val_r] ; [next_val_l] ; [next_val_r] ; original-interpltd-interpltd-interpltd-interpltd push cx ; ! xchg ax, bx stosw ; original sample (L) xchg ax, bx stosw ; original sample (R) add ah, 80h ; convert sound level 0 to 65535 format push ax ; * ; [previous_val_r] add bh, 80h add byte [next_val_l+1], 80h mov ax, [next_val_l] add ax, bx ; [previous_val_l] rcr ax, 1 mov cx, ax ; interpolated middle (L) add ax, bx rcr ax, 1 mov dx, ax ; interpolated 1st quarter (L) add ax, bx ; [previous_val_l] rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 1 (L) mov ax, cx add ax, dx ; middle (L) + 1st quarter (L) rcr ax, 1 ; / 2 mov bx, ax ; interpolated sample 2 (L) pop dx ; * ; [previous_val_r] mov ax, dx add byte [next_val_r+1], 80h add ax, [next_val_r] rcr ax, 1 push ax ; * ; interpolated middle (R) add ax, dx rcr ax, 1 push ax ; ** ; interpolated 1st quarter (R) add ax, dx ; [previous_val_r] rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 1 (R) mov ax, bx sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 2 (L) pop ax ; ** pop dx ; * add ax, dx ; 1st quarter (R) + middle (R) rcr ax, 1 ; / 2 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 2 (R) mov ax, cx add ax, [next_val_l] rcr ax, 1 push ax ; * ; interpolated 3rd quarter (L) add ax, cx ; interpolated middle (L) rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 3 (L) mov ax, dx add ax, [next_val_r] rcr ax, 1 push ax ; ** ; interpolated 3rd quarter (R) add ax, dx ; interpolated middle (R) rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 3 (R) pop bx ; ** pop ax ; * add ax, [next_val_l] rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 4 (L) mov ax, bx add ax, [next_val_r] rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 4 (R) pop cx ; ! retn ;----------------------------------------------------------------------------- interpolating_4_16bit_mono: ; 18/11/2023 ; ax = [previous_val] ; dx = [next_val] ; 02/02/2025 ; original-interpolated-interpolated-interpolated stosw ; original sample (L) stosw ; original sample (R) add ah, 80h ; convert sound level 0 to 65535 format mov bx, ax ; [previous_val] add dh, 80h add ax, dx ; [previous_val] + [next_val] rcr ax, 1 xchg ax, bx add ax, bx ; [previous_val] + interpolated middle rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 1 (L) stosw ; interpolated sample 1 (R) mov ax, bx ; interpolated middle sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 2 (L) stosw ; interpolated sample 2 (R) mov ax, bx add ax, dx ; interpolated middle + [next_val] rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 3 (L) stosw ; interpolated sample 3 (R) retn ;----------------------------------------------------------------------------- interpolating_4_16bit_stereo: ; 18/11/2023 ; bx = [previous_val_l] ; ax = [previous_val_r] ; [next_val_l] ; [next_val_r] ; original-interpolated-interpolated-interpolated xchg ax, bx stosw ; original sample (L) xchg ax, bx stosw ; original sample (R) add ah, 80h ; convert sound level 0 to 65535 format mov dx, ax ; [previous_val_r] add bh, 80h add byte [next_val_l+1], 80h mov ax, [next_val_l] add ax, bx ; [previous_val_l] rcr ax, 1 xchg ax, bx add ax, bx ; bx = interpolated middle (L) rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 1 (L) add byte [next_val_r+1], 80h mov ax, dx ; [previous_val_r] add ax, [next_val_r] rcr ax, 1 xchg ax, dx add ax, dx ; dx = interpolated middle (R) rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 1 (R) mov ax, bx sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 2 (L) mov ax, dx sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 2 (R) mov ax, bx add ax, [next_val_l] rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 3 (L) mov ax, dx add ax, [next_val_r] rcr ax, 1 sub ah, 80h ; -32768 to +32767 format again stosw ; interpolated sample 3 (R) retn ; 13/11/2023 previous_val: previous_val_l: dw 0 previous_val_r: dw 0 next_val: next_val_l: dw 0 next_val_r: dw 0 ; 16/11/2023 faz: db 0 ;============================================================================= ; Write AC'97 Hadrware Information ;============================================================================= ; 08/02/2025 ; 07/02/2025 ; 04/02/2025 - cgaplay.asm write_audio_dev_info: ; 08/02/2025 xor bh, bh cmp byte [audio_hardware], 1 jne short write_ac97_pci_dev_info ;----------------------------------------------------------------------------- ; 08/02/2025 ; 07/02/2025 ; 04/02/2025 - cgaplay2.asm write_sb16_dev_info: ;xor bh, bh ; 08/02/2025 mov ax, [audio_io_base] mov bl, al mov dl, bl and bl, 0Fh mov al, [bx+hex_chars] mov [msgBasePort+2], al mov bl, dl shr bl, 4 mov al, [bx+hex_chars] mov [msgBasePort+1], al mov bl, ah ; 20/12/2024 ;mov dl, bl ;and bl, 0Fh mov al, [bx+hex_chars] mov [msgBasePort], al ; 07/02/2025 ;xor ax, ax ;mov al, [IRQnum] ; 27/11/2024 mov al, [audio_intr] ;mov cl, 10 ;div cl ;add ah, 30h ;mov [msgIRQ], ah ; 25/11/2024 add al, 30h ; 07/02/2025 mov [msgSB16IRQ], al sys_msg msgSB16Info, 07h retn ;----------------------------------------------------------------------------- write_ac97_pci_dev_info: ; 01/01/2025 (cgaplay.asm) ; 19/11/2024 ; 30/05/2024 ; 06/06/2017 ; 03/06/2017 ; BUS/DEV/FN ; 00000000BBBBBBBBDDDDDFFF00000000 ; DEV/VENDOR ; DDDDDDDDDDDDDDDDVVVVVVVVVVVVVVVV mov eax, [dev_vendor] ;xor bh, bh mov bl, al mov dl, bl and bl, 0Fh mov al, [bx+hex_chars] mov [msgVendorId+3], al mov bl, dl shr bl, 4 mov al, [bx+hex_chars] mov [msgVendorId+2], al mov bl, ah mov dl, bl and bl, 0Fh mov al, [bx+hex_chars] mov [msgVendorId+1], al mov bl, dl shr bl, 4 mov al, [bx+hex_chars] mov [msgVendorId], al shr eax, 16 mov bl, al mov dl, bl and bl, 0Fh mov al, [bx+hex_chars] mov [msgDevId+3], al mov bl, dl shr bl, 4 mov al, [bx+hex_chars] mov [msgDevId+2], al mov bl, ah mov dl, bl and bl, 0Fh mov al, [bx+hex_chars] mov [msgDevId+1], al mov bl, dl shr bl, 4 mov al, [bx+hex_chars] mov [msgDevId], al mov eax, [bus_dev_fn] shr eax, 8 mov bl, al mov dl, bl and bl, 7 ; bit 0,1,2 mov al, [bx+hex_chars] mov [msgFncNo+1], al mov bl, dl shr bl, 3 mov dl, bl and bl, 0Fh mov al, [bx+hex_chars] mov [msgDevNo+1], al mov bl, dl shr bl, 4 mov al, [bx+hex_chars] mov [msgDevNo], al mov bl, ah mov dl, bl and bl, 0Fh mov al, [bx+hex_chars] mov [msgBusNo+1], al mov bl, dl shr bl, 4 mov al, [bx+hex_chars] mov [msgBusNo], al ;mov ax, [ac97_NamBar] mov ax, [NAMBAR] mov bl, al mov dl, bl and bl, 0Fh mov al, [bx+hex_chars] mov [msgNamBar+3], al mov bl, dl shr bl, 4 mov al, [bx+hex_chars] mov [msgNamBar+2], al mov bl, ah mov dl, bl and bl, 0Fh mov al, [bx+hex_chars] mov [msgNamBar+1], al mov bl, dl shr bl, 4 mov al, [bx+hex_chars] mov [msgNamBar], al ;mov ax, [NABMBAR] mov ax, [NABMBAR] mov bl, al mov dl, bl and bl, 0Fh mov al, [bx+hex_chars] mov [msgNabmBar+3], al mov bl, dl shr bl, 4 mov al, [bx+hex_chars] mov [msgNabmBar+2], al mov bl, ah mov dl, bl and bl, 0Fh mov al, [bx+hex_chars] mov [msgNabmBar+1], al mov bl, dl shr bl, 4 mov al, [bx+hex_chars] mov [msgNabmBar], al xor eax, eax mov al, [ac97_int_ln_reg] mov cl, 10 div cl ; 23/11/2024 ;add [msgIRQ], ax add ax, 3030h mov [msgIRQ], ax ; 07/02/2025 ;and al, al cmp al, 30h jnz short _w_ac97imsg_ mov al, [msgIRQ+1] mov ah, ' ' mov [msgIRQ], ax _w_ac97imsg_: sys_msg msgAC97Info, 07h ; 19/11/2024 ;retn ;----------------------------------------------------------------------------- ; 30/05/2024 write_VRA_info: sys_msg msgVRAheader, 07h cmp byte [VRA], 0 jna short _w_VRAi_no _w_VRAi_yes: sys_msg msgVRAyes, 07h retn _w_VRAi_no: sys_msg msgVRAno, 07h retn ;============================================================================= ; Write WAV File Information ;============================================================================= ; 07/02/2025 write_wav_file_info: sys_msg msgWavFileName, 0Fh sys_msg wav_file_name, 0Fh write_sample_rate: mov ax, [WAVE_SampleRate] ; ax = sample rate (hertz) xor dx, dx mov cx, 10 div cx add [msgHertz+4], dl sub dx, dx div cx add [msgHertz+3], dl sub dx, dx div cx add [msgHertz+2], dl sub dx, dx div cx add [msgHertz+1], dl add [msgHertz], al sys_msg msgSampleRate, 0Fh mov bp, msg16Bits cmp byte [WAVE_BitsPerSample], 16 je short wsr_1 mov bp, msg8Bits wsr_1: sys_msg bp, 0Fh mov bp, msgMono cmp byte [WAVE_NumChannels], 1 je short wsr_2 mov bp, msgStereo wsr_2: sys_msg bp, 0Fh retn ;============================================================================= ; Audio System Initialization ;============================================================================= ; 08/02/2025 ; 06/02/2025 audio_system_init: cmp byte [audio_hardware], 1 je short sb16_init call ac97_init jnc short init_ok ; 08/02/2025 mov bp, ac97_init_err_msg init_error: ;sys_msg init_err_msg, 0Fh sys_msg bp, 0Fh stc init_ok: retn ;============================================================================= ; Sound Blaster 16 Initialization ;============================================================================= ; 08/02/2025 (*) (wave graphics/scope synchronization) ; 08/02/2025 ; 06/02/2025 sb16_init: ; 04/02/2025 - cgaplay2.asm ; 25/11/2024 ; 24/11/2024 ; Ref: TRDOS 386 Kernel v2.0.9, audio.s (06/06/2024) ; SbInit_play procedure (06/08/2022, v2.0.5) mov ax, ds mov dx, ax shr dx, 12 shl ax, 4 add ax, dma_buffer adc dx, 0 mov bx, ax ; linear address ; dx = page number ;mov cx, dma_buffer_size ; 32768 ; 08/02/2025 (*) mov cx, [buffersize] ; = [loadsize] for SB16 shl cx, 1 ; 2*[buffersize] = dma buffer size cmp byte [WAVE_BitsPerSample], 16 jne short sbInit_0 ; set 8 bit DMA buffer ; 26/11/2024 mov ax, dx ; page number ; convert byte count to word count ; 26/11/2024 ;dec cx shr cx, 1 dec cx ; word count - 1 ; convert byte offset to word offset shr ax, 1 rcr bx, 1 ; 26/11/2024 ;shr bx, 1 ; 16 bit DMA buffer setting (DMA channel 5) mov al, 05h ; set mask bit for channel 5 (4+1) out 0D4h, al xor al, al ; stops all DMA processes on selected channel out 0D8h, al ; clear selected channel register mov al, bl ; byte 0 of DMA buffer offset in words (physical) out 0C4h, al ; DMA channel 5 port number mov al, bh ; byte 1 of DMA buffer offset in words (physical) out 0C4h, al ; 26/11/2024 and dl, 0FEh ; clear bit 0 (not necessary, it will be ignored) mov al, dl ; byte 2 of DMA buffer address (physical) out 8Bh, al ; page register port addr for channel 5 mov al, cl ; low byte of DMA count - 1 out 0C6h, al ; count register port addr for channel 5 mov al, ch ; high byte of DMA count - 1 out 0C6h, al ; channel 5, read, autoinitialized, single mode mov al, 59h out 0D6h, al ; DMA mode register port address mov al, 01h ; clear mask bit for channel 5 out 0D4h, al ; DMA mask register port address jmp short ResetDsp sbInit_0: dec cx ; byte count - 1 ; 8 bit DMA buffer setting (DMA channel 1) mov al, 05h ; set mask bit for channel 1 (4+1) out 0Ah, al ; DMA mask register xor al, al ; stops all DMA processes on selected channel out 0Ch, al ; clear selected channel register mov al, bl ; byte 0 of DMA buffer address (physical) out 02h, al ; DMA channel 1 port number mov al, bh ; byte 1 of DMA buffer address (physical) out 02h, al mov al, dl ; byte 2 of DMA buffer address (physical) out 83h, al ; page register port addr for channel 1 mov al, cl ; low byte of DMA count - 1 out 03h, al ; count register port addr for channel 1 mov al, ch ; high byte of DMA count - 1 out 03h, al ; channel 1, read, autoinitialized, single mode mov al, 59h out 0Bh, al ; DMA mode register port address mov al, 01h ; clear mask bit for channel 1 out 0Ah, al ; DMA mask register port address ResetDsp: mov dx, [audio_io_base] ;add dx, 06h add dl, 06h mov al, 1 out dx, al in al, dx in al, dx in al, dx in al, dx xor ax, ax out dx, al mov cx, 100 WaitId: mov dx, [audio_io_base] add dl, 0Eh in al, dx or al, al ;js short sb_GetId ; 26/11/2024 jns short sb_next ;loop WaitId ;jmp sb_Exit sb_GetId: mov dx, [audio_io_base] ;add dx, 0Ah add dl, 0Ah in al, dx cmp al, 0AAh je short SbOk sb_next: loop WaitId ;stc ; 08/02/2025 mov bp, sb16_init_err_msg jmp init_error SbOk: retn ;----------------------------------------------------------------------------- ;----------------------------------------------------------------------------- ; 08/02/2025 (*) (Wave scope/graphics synchronization) ; 07/02/2025 ; 06/02/2025 sb16_init_play: mov dx, [audio_io_base] ;add dx, 0Ch add dl, 0Ch SbOut 0D1h ; Turn on speaker SbOut 41h ; 8 bit or 16 bit transfer mov bx, [WAVE_SampleRate] ; sampling rate (Hz) SbOut bh ; sampling rate high byte SbOut bl ; sampling rate low byte ; 25/11/2024 StartDMA: ; autoinitialized mode cmp byte [WAVE_BitsPerSample], 16 ; 16 bit samples je short sb_play_1 ; 8 bit samples mov bx, 0C6h ; 8 bit output (0C6h) cmp byte [WAVE_NumChannels], 2 ; 1 = mono, 2 = stereo jb short sb_play_2 mov bh, 20h ; 8 bit stereo (20h) jmp short sb_play_2 sb_play_1: ; 16 bit samples mov bx, 10B6h ; 16 bit output (0B6h) cmp byte [WAVE_NumChannels], 2 ; 1 = mono, 2 = stereo jb short sb_play_2 add bh, 20h ; 16 bit stereo (30h) sb_play_2: ; PCM output (8/16 bit mono autoinitialized transfer) SbOut bl ; bCommand SbOut bh ; bMode ; 25/11/2024 ;mov bx, dma_buffer_size/2 ; 08/02/2025 (*) mov bx, [buffersize] ; = [loadsize] for SB16 ; half buffer size cmp byte [WAVE_BitsPerSample], 16 ; 16 bit DMA jne short sb_play_3 shr bx, 1 ; byte count to word count (samples) sb_play_3: dec bx ; wBlkSize is one less than the actual size SbOut bl SbOut bh ; 24/11/2024 ;mov byte [stopped], 0 ; playing ! ; 06/02/2025 mov byte [volume], 13 ; max = 15, min = 0 ; 07/02/2025 call SetPCMOutVolume retn ;----------------------------------------------------------------------------- ; 09/02/2025 ; 06/02/2025 ; 02/01/2025 ; 24/11/2024 ; Ref: TRDOS 386 Kernel v2.0.9 audio.s (06/06/2024) ; sb16_stop procedure (06/08/2022, v2.0.5) sb16_stop: ; 09/02/2025 ; 02/01/2025 ;mov byte [stopped], 2 ; mov dx, [audio_io_base] ;add dx, 0Ch add dl, 0Ch mov bl, 0D9h ; exit auto-initialize 16 bit transfer ; stop autoinitialized DMA transfer mode cmp byte [WAVE_BitsPerSample], 16 ; 16 bit samples je short sb16_stop_1 ;mov bl, 0DAh ; exit auto-initialize 8 bit transfer inc bl sb16_stop_1: SbOut bl ; exit auto-initialize transfer command xor al, al ; stops all DMA processes on selected channel cmp byte [WAVE_BitsPerSample], 16 ; 16 bit samples je short sb16_stop_2 out 0Ch, al ; clear selected channel register jmp short sb16_stop_3 sb16_stop_2: out 0D8h, al ; clear selected channel register sb16_stop_3: ; 24/11/2024 mov byte [stopped], 2 ; stop ! SbDone: ;mov dx, [audio_io_base] ;add dx, 0Ch SbOut 0D0h SbOut 0D3h sb16_stop_4: retn ;----------------------------------------------------------------------------- ; 06/02/2025 ; 02/01/2025 ; 24/11/2024 ; Ref: TRDOS 386 Kernel v2.0.9 audio.s (06/06/2024) ; sb16_pause procedure (06/08/2022, v2.0.5) sb16_pause: ; 02/01/2025 mov byte [stopped], 1 ; paused ; mov dx, [audio_io_base] ;add dx, 0Ch ; Command & Data Port add dl, 0Ch cmp byte [WAVE_BitsPerSample], 16 ; 16 bit samples je short sb_pause_1 ; 8 bit samples mov bl, 0D0h ; 8 bit DMA mode jmp short sb_pause_2 sb_pause_1: ; 16 bit samples mov bl, 0D5h ; 16 bit DMA mode sb_pause_2: SbOut bl ; bCommand sb_pause_3: retn ;----------------------------------------------------------------------------- ; 06/02/2025 ; 02/01/2025 ; 24/11/2024 ; Ref: TRDOS 386 Kernel v2.0.9 audio.s (06/06/2024) ; sb16_continue procedure (06/08/2022, v2.0.5) sb16_play: sb16_continue: ; 02/01/2025 ; continue to play (after pause) mov byte [stopped], 0 ; mov dx, [audio_io_base] ;add dx, 0Ch ; Command & Data Port add dl, 0Ch cmp byte [WAVE_BitsPerSample], 16 ; 16 bit samples je short sb_cont_1 ; 8 bit samples mov bl, 0D4h ; 8 bit DMA mode jmp short sb_cont_2 sb_cont_1: ; 16 bit samples mov bl, 0D6h ; 16 bit DMA mode sb_cont_2: SbOut bl ; bCommand sb_cont_3: retn ;============================================================================= ; AC'97 Audio System Initialization ;============================================================================ ; 06/02/2025 ac97_init: ; 04/02/2025 - cgaplay.asm codecConfig: ; 30/05/2024 ; 19/05/2024 ; 19/11/2023 ; 15/11/2023 ; 04/11/2023 ; 17/02/2017 ; 07/11/2016 (Erdogan Tan) ;AC97_EA_VRA equ 1 AC97_EA_VRA equ BIT0 ; 04/11/2023 init_ac97_controller: mov eax, [bus_dev_fn] mov al, PCI_CMD_REG call pciRegRead16 ; read PCI command register or dl, IO_ENA+BM_ENA ; enable IO and bus master call pciRegWrite16 ;call delay_100ms ; 19/05/2024 ; ('PLAYMOD3.ASM', Erdogan Tan, 18/05/2024) init_ac97_codec: ; 18/11/2023 mov bp, 40 ; 29/05/2024 ;mov bp, 1000 _initc_1: ; 30/05/2024 mov dx, GLOB_STS_REG ; 30h add dx, [NABMBAR] in eax, dx ; 19/05/2024 call delay1_4ms cmp eax, 0FFFFFFFFh ; -1 jne short _initc_3 _initc_2: dec bp jz short _ac97_codec_ready call delay_100ms jmp short _initc_1 _initc_3: test eax, CTRL_ST_CREADY jnz short _ac97_codec_ready ; 30/05/2024 cmp byte [reset], 1 jnb short _initc_2 call reset_ac97_codec ; 30/05/2024 mov byte [reset], 1 ; 19/05/2024 jmp short _initc_2 _ac97_codec_ready: mov dx, [NAMBAR] ;add dx, 0 ; ac_reg_0 ; reset register out dx, ax call delay_100ms ; 19/11/2023 or bp, bp jnz short _ac97_codec_init_ok xor ax, ax ; 0 mov dx, [NAMBAR] add dx, CODEC_REG_POWERDOWN out dx, ax ; 30/05/2024 call delay1_4ms ; 19/11/2023 ; wait for 1 second ; 19/05/2024 mov cx, 1000 ; 1000*4*0.25ms = 1s ;;mov cx, 10 ; 30/05/2024 ;mov cx, 40 _ac97_codec_rloop: ;call delay_100ms ; 30/05/2024 mov dx, [NAMBAR] add dx, CODEC_REG_POWERDOWN in ax, dx call delay1_4ms and ax, 0Fh cmp al, 0Fh je short _ac97_codec_init_ok loop _ac97_codec_rloop init_ac97_codec_err1: ;stc ; cf = 1 ; 19/05/2024 init_ac97_codec_err2: retn _ac97_codec_init_ok: call reset_ac97_controller ; 30/05/2024 ; 19/05/2024 ;call delay_100ms ; 30/05/2024 call delay1_4ms call delay1_4ms call delay1_4ms call delay1_4ms setup_ac97_codec: ; 12/11/2023 cmp word [WAVE_SampleRate], 48000 je short skip_rate ; 30/05/2024 ; 19/05/2024 ;call delay1_4ms ; 30/05/2024 ;cmp byte [VRA], 0 ;jna short skip_rate ; 11/11/2023 mov dx, [NAMBAR] add dx, CODEC_EXT_AUDIO_CTRL_REG ; 2Ah in ax, dx ; 30/05/2024 ; 19/05/2024 call delay1_4ms ; 13/11/2024 ;and al, NOT BIT1 ; Clear DRA ;;; ; 30/05/2024 ;and al, NOT (BIT1+BIT0) ; Clear DRA+VRA ; 01/01/2025 (NASM) and al, ~(BIT1+BIT0) out dx, ax call check_vra cmp byte [VRA], 0 jna short skip_rate mov dx, [NAMBAR] add dx, CODEC_EXT_AUDIO_CTRL_REG ; 2Ah in ax, dx ;and al, ~BIT1 ; Clear DRA ;;; or al, AC97_EA_VRA ; 1 ; 04/11/2023 ; 30/05/2024 mov dx, [NAMBAR] add dx, CODEC_EXT_AUDIO_CTRL_REG ; 2Ah out dx, ax ; Enable variable rate audio mov cx, 10 check_vra_loop: call delay_100ms ; 30/05/2024 ;call delay1_4ms ; 30/05/2024 mov dx, [NAMBAR] add dx, CODEC_EXT_AUDIO_CTRL_REG ; 2Ah ; 11/11/2023 in ax, dx test al, AC97_EA_VRA ; 1 jnz short set_rate ; 11/11/2023 loop check_vra_loop ;vra_not_supported: ; 19/05/2024 mov byte [VRA], 0 jmp short skip_rate set_rate: mov ax, [WAVE_SampleRate] ; 17/02/2017 (Erdogan Tan) mov dx, [NAMBAR] add dx, CODEC_PCM_FRONT_DACRATE_REG ; 2Ch out dx, ax ; PCM Front/Center Output Sample Rate ;call delay_100ms ; 30/05/2024 call delay1_4ms ; 12/11/2023 skip_rate: mov ax, 0202h mov dx, [NAMBAR] add dx, CODEC_MASTER_VOL_REG ; 02h out dx, ax ; 11/11/2023 call delay1_4ms call delay1_4ms call delay1_4ms call delay1_4ms mov ax, 0202h mov dx, [NAMBAR] add dx, CODEC_PCM_OUT_REG ; 18h out dx, ax ; 11/11/2023 call delay1_4ms call delay1_4ms call delay1_4ms call delay1_4ms ; 30/05/2024 ; 19/05/2024 ;clc ; 06/02/2025 mov byte [volume], 29 ; max = 31, min = 0 retn ;----------------------------------------------------------------------------- reset_ac97_controller: ; 19/05/2024 ; 11/11/2023 ; 10/06/2017 ; 29/05/2017 ; 28/05/2017 ; reset AC97 audio controller registers xor ax, ax mov dx, PI_CR_REG add dx, [NABMBAR] out dx, al ; 19/05/2024 call delay1_4ms mov dx, PO_CR_REG add dx, [NABMBAR] out dx, al ; 19/05/2024 call delay1_4ms mov dx, MC_CR_REG add dx, [NABMBAR] out dx, al ; 19/05/2024 call delay1_4ms mov al, RR mov dx, PI_CR_REG add dx, [NABMBAR] out dx, al ; 19/05/2024 call delay1_4ms mov dx, PO_CR_REG add dx, [NABMBAR] out dx, al ; 19/05/2024 call delay1_4ms mov dx, MC_CR_REG add dx, [NABMBAR] out dx, al ; 19/05/2024 call delay1_4ms retn ;----------------------------------------------------------------------------- reset_ac97_codec: ; 11/11/2023 ; 28/05/2017 - Erdogan Tan (Ref: KolibriOS, intelac97.asm) mov dx, GLOB_CNT_REG ; 2Ch add dx, [NABMBAR] in eax, dx ;test eax, 2 ; 06/08/2022 test al, 2 jz short _r_ac97codec_cold call warm_ac97codec_reset jnc short _r_ac97codec_ok _r_ac97codec_cold: call cold_ac97codec_reset jnc short _r_ac97codec_ok ; 16/04/2017 ;xor eax, eax ; timeout error ;stc retn _r_ac97codec_ok: xor eax, eax ;mov al, VIA_ACLINK_C00_READY ; 1 inc al retn ;----------------------------------------------------------------------------- warm_ac97codec_reset: ; 11/11/2023 ; 06/08/2022 - TRDOS 386 v2.0.5 ; 28/05/2017 - Erdogan Tan (Ref: KolibriOS, intelac97.asm) mov eax, 6 mov dx, GLOB_CNT_REG ; 2Ch add dx, [NABMBAR] out dx, eax mov cx, 10 ; total 1s _warm_ac97c_rst_wait: call delay_100ms mov dx, GLOB_STS_REG ; 30h add dx, [NABMBAR] in eax, dx test eax, CTRL_ST_CREADY jnz short _warm_ac97c_rst_ok dec cx jnz short _warm_ac97c_rst_wait _warm_ac97c_rst_fail: stc _warm_ac97c_rst_ok: retn ;----------------------------------------------------------------------------- cold_ac97codec_reset: ; 11/11/2023 ; 06/08/2022 - TRDOS 386 v2.0.5 ; 28/05/2017 - Erdogan Tan (Ref: KolibriOS, intelac97.asm) mov eax, 2 mov dx, GLOB_CNT_REG ; 2Ch add dx, [NABMBAR] out dx, eax call delay_100ms ; wait 100 ms call delay_100ms ; wait 100 ms call delay_100ms ; wait 100 ms call delay_100ms ; wait 100 ms mov cx, 16 ; total 20*100 ms = 2s _cold_ac97c_rst_wait: mov dx, GLOB_STS_REG ; 30h add dx, [NABMBAR] in eax, dx test eax, CTRL_ST_CREADY jnz short _cold_ac97c_rst_ok call delay_100ms dec cx jnz short _cold_ac97c_rst_wait _cold_ac97c_rst_fail: stc _cold_ac97c_rst_ok: retn ;----------------------------------------------------------------------------- ; 13/11/2024 ; 30/05/2024 %if 1 check_vra: ; 30/05/2024 mov byte [VRA], 1 ; 29/05/2024 - audio.s (TRDOS 386 Kernel) - 27/05/2024 ; 24/05/2024 ; 23/05/2024 mov dx, [NAMBAR] add dx, CODEC_EXT_AUDIO_REG ; 28h in ax, dx ; 30/05/2024 ; 23/05/2024 call delay1_4ms ; 30/05/2024 test al, BIT0 ;test al, 1 ; BIT0 ; Variable Rate Audio bit jnz short check_vra_ok vra_not_supported: ; 13/11/2023 mov byte [VRA], 0 check_vra_ok: retn %endif ;----------------------------------------------------------------------------- ;----------------------------------------------------------------------------- ; 08/02/2025 (*) ; !!!! 18.2 block/second buffer sizing for proper wave scopes !!!! ; (wave graphics synchronization) ; 08/02/2025 ac97_play_setup: ; 07/02/2025 ; 06/02/2025 ;ac97_init_play: ;;; ; 04/02/2025 ; 01/01/2025 (cgaplay.asm) ; 28/11/2024 (ac97play.asm) ; 25/11/2023 ; 18/11/2023 (ich_wav4.asm) ; 13/11/2023 (ich_wav3.asm) cmp byte [VRA], 1 jb short chk_sample_rate playwav_48_khz: mov word [loadfromwavfile], loadFromFile ; 08/02/2025 %if 0 ;mov word [loadsize], 0 ; 65536 ;;; ; 17/11/2024 ;mov word [buffersize], 32768 mov ax, BUFFERSIZE/2 ; 32760 ; 07/02/2025 ; ax = 16840 mov [buffersize], ax ; 16 bit samples shl ax, 1 ; bytes mov cl, [fbs_shift] shr ax, cl mov [loadsize], ax ; 16380 or 32760 or 65520 ;;; ; 07/02/2025 ;jmp _PlayNow %endif ; 08/02/2025 ;retn ; 09/02/2025 jmp allocate_memory chk_sample_rate: ; set conversion parameters ; (for 8, 11.025, 16, 22.050, 24, 32 kHZ) mov ax, [WAVE_SampleRate] cmp ax, 48000 je short playwav_48_khz chk_22khz: cmp ax, 22050 jne short chk_11khz cmp byte [WAVE_BitsPerSample], 8 jna short chk_22khz_1 mov bx, load_22khz_stereo_16_bit cmp byte [WAVE_NumChannels], 1 jne short chk_22khz_2 mov bx, load_22khz_mono_16_bit jmp short chk_22khz_2 chk_22khz_1: mov bx, load_22khz_stereo_8_bit cmp byte [WAVE_NumChannels], 1 jne short chk_22khz_2 mov bx, load_22khz_mono_8_bit chk_22khz_2: ;;mov ax, 7514 ; (442*17) ; 07/02/2025 ;mov ax, 3842 ; (226*17) ; 08/02/2025 (*) mov ax, 1207 ; (71*17) mov dx, 37 mov cx, 17 jmp set_sizes chk_11khz: cmp ax, 11025 jne short chk_44khz cmp byte [WAVE_BitsPerSample], 8 jna short chk_11khz_1 mov bx, load_11khz_stereo_16_bit cmp byte [WAVE_NumChannels], 1 jne short chk_11khz_2 mov bx, load_11khz_mono_16_bit jmp short chk_11khz_2 chk_11khz_1: mov bx, load_11khz_stereo_8_bit cmp byte [WAVE_NumChannels], 1 jne short chk_11khz_2 mov bx, load_11khz_mono_8_bit chk_11khz_2: ;;mov ax, 3757 ; (221*17) ; 07/02/2025 ;mov ax, 1921 ; (113*17) ; 08/02/2025 (*) mov ax, 612 ; (36*17) mov dx, 74 mov cx, 17 jmp set_sizes chk_44khz: cmp ax, 44100 jne short chk_16khz cmp byte [WAVE_BitsPerSample], 8 jna short chk_44khz_1 mov bx, load_44khz_stereo_16_bit cmp byte [WAVE_NumChannels], 1 jne short chk_44khz_2 mov bx, load_44khz_mono_16_bit jmp short chk_44khz_2 chk_44khz_1: mov bx, load_44khz_stereo_8_bit cmp byte [WAVE_NumChannels], 1 jne short chk_44khz_2 mov bx, load_44khz_mono_8_bit chk_44khz_2: ;;;;mov ax, 15065 ; (655*23) ; 18/11/2023 ((file size + bss + stack) <= 64KB) ;;;mov ax, 14076 ; (612*23) ; 17/11/2024 ;;mov ax, 12650 ; (550*23) ; 07/02/2025 ;mov ax, 8418 ; (366*23) ; 08/02/2025 (*) mov ax, 2438 ; (106*23) mov dx, 25 mov cx, 23 jmp set_sizes chk_16khz: cmp ax, 16000 jne short chk_8khz cmp byte [WAVE_BitsPerSample], 8 jna short chk_16khz_1 mov bx, load_16khz_stereo_16_bit cmp byte [WAVE_NumChannels], 1 jne short chk_16khz_2 mov bx, load_16khz_mono_16_bit jmp short chk_16khz_2 chk_16khz_1: mov bx, load_16khz_stereo_8_bit cmp byte [WAVE_NumChannels], 1 jne short chk_16khz_2 mov bx, load_16khz_mono_8_bit chk_16khz_2: ;;;mov ax, 5461 ; 17/11/2024 ;;mov ax, 5460 ; 07/02/2025 ;mov ax, 2806 ; 08/02/2025 (*) mov ax, 879 mov dx, 3 mov cx, 1 jmp set_sizes chk_8khz: cmp ax, 8000 jne short chk_24khz cmp byte [WAVE_BitsPerSample], 8 jna short chk_8khz_1 mov bx, load_8khz_stereo_16_bit cmp byte [WAVE_NumChannels], 1 jne short chk_8khz_2 mov bx, load_8khz_mono_16_bit jmp short chk_8khz_2 chk_8khz_1: mov bx, load_8khz_stereo_8_bit cmp byte [WAVE_NumChannels], 1 jne short chk_8khz_2 mov bx, load_8khz_mono_8_bit chk_8khz_2: ;;mov ax, 2730 ; 07/02/2025 ;mov ax, 1403 ; 08/02/2025 (*) mov ax, 440 mov dx, 6 mov cx, 1 jmp set_sizes ; 02/02/2025 chk_24khz: cmp ax, 24000 jne short chk_32khz cmp byte [WAVE_BitsPerSample], 8 jna short chk_24khz_1 mov bx, load_24khz_stereo_16_bit cmp byte [WAVE_NumChannels], 1 jne short chk_24khz_2 mov bx, load_24khz_mono_16_bit jmp short chk_24khz_2 chk_24khz_1: mov bx, load_24khz_stereo_8_bit cmp byte [WAVE_NumChannels], 1 jne short chk_24khz_2 mov bx, load_24khz_mono_8_bit chk_24khz_2: ;;;mov ax, 8192 ; 17/11/2024 ;;mov ax, 8190 ; 07/02/2025 ;mov ax, 4210 ; 08/02/2025 (*) mov ax, 1318 mov dx, 2 mov cx, 1 jmp short set_sizes chk_32khz: cmp ax, 32000 ;jne short vra_needed ; 02/02/2025 jne short chk_12khz cmp byte [WAVE_BitsPerSample], 8 jna short chk_32khz_1 mov bx, load_32khz_stereo_16_bit cmp byte [WAVE_NumChannels], 1 jne short chk_32khz_2 mov bx, load_32khz_mono_16_bit jmp short chk_32khz_2 chk_32khz_1: mov bx, load_32khz_stereo_8_bit cmp byte [WAVE_NumChannels], 1 jne short chk_32khz_2 mov bx, load_32khz_mono_8_bit chk_32khz_2: ;;;mov ax, 10922 ; 17/11/2024 ;;mov ax, 10920 ; 07/02/2025 ;mov ax, 5613 ; 08/02/2025 (*) mov ax, 1758 mov dx, 3 mov cx, 2 ; 02/02/2025 jmp short set_sizes ; 01/01/2025 (cgaplay.asm) vra_needed: ; 13/11/2023 pop ax ; discard return address to the caller ; 30/05/2024 vra_err: sys_msg msg_no_vra, 0Fh jmp Exit ;;;; ; 02/02/2025 chk_12khz: cmp ax, 12000 jne short vra_needed cmp byte [WAVE_BitsPerSample], 8 jna short chk_12khz_1 mov bx, load_12khz_stereo_16_bit cmp byte [WAVE_NumChannels], 1 jne short chk_12khz_2 mov bx, load_12khz_mono_16_bit jmp short chk_12khz_2 chk_12khz_1: mov bx, load_12khz_stereo_8_bit cmp byte [WAVE_NumChannels], 1 jne short chk_12khz_2 mov bx, load_12khz_mono_8_bit chk_12khz_2: ;;;mov ax, 4096 ;;mov ax, 4095 ; playwav8.asm ; 07/02/2025 ;mov ax, 2105 ; 08/02/2025 (*) mov ax, 659 mov dx, 4 mov cx, 1 ; 02/02/2025 ;jmp short set_sizes ;;;; ;----------------------------------------------------------------------------- set_sizes: ;;; ; 17/11/2024 push cx mov cl, 2 sub cl, [fbs_shift] ; = 2 for 16 bit stereo ; = 1 for 16 bit mono or 8 bit stereo ; = 0 for 8 bit mono shl ax, cl pop cx mov [loadsize], ax ; (one) read count in bytes ;;; mul dx cmp cx, 1 je short s_2 s_1: div cx s_2: ;;; ; ax = byte count of (to be) converted samples ; 17/11/2024 ;;; mov cl, [fbs_shift] shl ax, cl ; *1 for 16 bit stereo ; *2 for 16 bit mono or 8 bit stereo ; *4 for for 8 bit mono ;;; ; ax = 16 bit stereo byte count (target buffer size) shr ax, 1 ; buffer size is 16 bit sample count mov [buffersize], ax ; ** ; 09/02/2025 mov [loadfromwavfile], bx ; 08/02/2025 ;retn ; ---------------------------------------------------------------------------- ; 09/02/2025 ; 08/02/2025 allocate_memory: ; allocate 256 bytes of data for DCM_OUT Buffer Descriptor List. (BDL) ;mov ax, BDL_SIZE / 16 ; 09/02/2025 mov bx, BDL_SIZE / 16 call memAlloc mov [BDL_BUFFER], ax ; segment ; allocate 2 buffers, 64k each for now. ;;mov ax, BUFFERSIZE / 16 ; 64k for .WAV file ;mov bx, [buffersize] ; word count ; 09/02/2025 mov bx, ax ; ** add bx, 7 shr bx, 3 ; / 8 ; paragraph count push bx call memAlloc mov [WAV_BUFFER_1], ax ; segment ;;mov ax, BUFFERSIZE / 16 ;mov bx, [buffersize] ; word count ;add bx, 7 ;shr bx, 3 ; / 8 ; paragraph count pop bx call memAlloc mov [WAV_BUFFER_2], ax ; segment retn ;----------------------------------------------------------------------------- ;----------------------------------------------------------------------------- ; 08/02/2025 ac97_init_play: ; 06/02/2025 _PlayNow: ; 01/01/2025 (cgaplay.asm) ; 18/12/2024 (ac97play.asm) ; 30/12/2024 (cgaplay.s) ; 29/12/2024 (vgaplay3.s) ; 02/12/2024 (ac97play.s) ; 29/05/2024 (TRDOS 386, playwav7.s) ; ((Modified from playwav4.asm, ich_wav4.asm)) ; ------------------ ; create Buffer Descriptor List ; Generic Form of Buffer Descriptor ; --------------------------------- ; 63 62 61-48 47-32 31-0 ; --- --- -------- ------- ----- ; IOC BUP -reserved- Buffer Buffer ; Length Pointer ; [15:0] [31:0] ; 09/02/2025 ; 08/02/2025 push es mov ax, [BDL_BUFFER] ; get segment # for BDL mov es, ax mov cx, 32 / 2 ; make 32 entries in BDL xor di, di ;mov di, bdl_buffer _pw0: movzx eax, word [WAV_BUFFER_1] shl eax, 4 ; convert seg:off ->0:offset stosd ; store pointer to wavbuffer1 ;mov eax, BUFFERSIZE / 2 ; size of buffer (32K) in (16bit) words ; 13/11/2023 (ich_wav3.asm) - 18/11/2023 (ich_wav4.asm) mov eax, [buffersize] ;or eax, IOC + BUP ; 06/11/2023 (TUNELOOP version, without interrupt) or eax, BUP stosd movzx eax, word [WAV_BUFFER_2] shl eax, 4 ; convert seg:off ->0:offset stosd ; store pointer to wavbuffer2 ;mov eax, BUFFERSIZE / 2 ; size of half buffer (32K) ; 13/11/2023 (ich_wav3.asm) - 18/11/2023 (ich_wav4.asm) mov eax, [buffersize] ;or eax, IOC + BUP ; 06/11/2023 (TUNELOOP version, without interrupt) or eax, BUP stosd loop _pw0 pop es ; 18/12/2024 ;mov word [count], cx ; 0 ; 14/11/2024 ;mov dword [LoadedDataBytes], 0 ; 08/02/2025 ; 19/11/2024 ac97_RePlayWav: ; load 64k into buffer 1 mov ax, [WAV_BUFFER_1] ;call loadFromFile ; 13/11/2023 call word [loadfromwavfile] ; 14/11/2024 mov ax, [count] add [LoadedDataBytes], ax adc word [LoadedDataBytes+2], 0 ; and 64k into buffer 2 mov ax, [WAV_BUFFER_2] ;call loadFromFile ; 13/11/2023 call word [loadfromwavfile] ; 14/11/2024 ; 08/02/2025 xor eax, eax mov ax, [count] ;add [LoadedDataBytes], ax ;adc word [LoadedDataBytes+2], 0 add [LoadedDataBytes], eax ; write NABMBAR+10h with offset of buffer descriptor list ; 09/02/2025 movzx eax, word [BDL_BUFFER] shl eax, 4 ; convert seg:off to 0:off ; 08/02/2025 ;mov ax, cs ;shl eax, 4 ;add eax, bdl_buffer ; mov dx, [NABMBAR] add dx, PO_BDBAR_REG ; set pointer to BDL out dx, eax ; write to AC97 controller ; 19/05/2024 call delay1_4ms mov al, 31 call setLastValidIndex ; 19/05/2024 ;call delay1_4ms ; 07/02/2025 ;mov al, [volume] call SetPCMOutVolume ; 17/02/2017 mov dx, [NABMBAR] add dx, PO_CR_REG ; PCM out Control Register ;mov al, IOCE + RPBM ; Enable 'Interrupt On Completion' + run ; ; (LVBI interrupt will not be enabled) ; 06/11/2023 (TUNELOOP version, without interrupt) mov al, RPBM out dx, al ; Start bus master operation. ; 19/05/2024 ; 06/11/2023 ;call delay1_4ms ; 30/05/2024 retn ;----------------------------------------------------------------------------- ;----------------------------------------------------------------------------- ; 01/01/2025 (cgaplay.asm) ; 29/12/2024 (vgaplay3.s) ; 18/12/2024 (ac97play.s) ; ; 18/11/2024 ; Ref: TRDOS 386 v2.0.9, audio.s, Erdogan Tan, 06/06/2024 ; 06/02/2025 audio_stop: cmp byte [audio_hardware], 1 ja short ac97_stop jmp sb16_stop ;----------------------------------------------------------------------------- ac97_stop: ; 18/11/2024 mov byte [stopped], 2 ac97_po_cmd@: xor al, al ; 0 ac97_po_cmd: mov dx, [NABMBAR] add dx, PO_CR_REG ; PCM out control register out dx, al retn ;----------------------------------------------------------------------------- ;----------------------------------------------------------------------------- ; 06/02/2025 audio_pause: cmp byte [audio_hardware], 1 ja short ac97_pause jmp sb16_pause ;----------------------------------------------------------------------------- ac97_pause: mov byte [stopped], 1 ; paused ;mov al, 0 ;jmp short ac97_po_cmd jmp short ac97_po_cmd@ ;----------------------------------------------------------------------------- ;----------------------------------------------------------------------------- ; 06/02/2025 audio_play: cmp byte [audio_hardware], 1 ja short ac97_play jmp sb16_play ;----------------------------------------------------------------------------- ac97_play: ; continue to play (after pause) mov byte [stopped], 0 mov al, RPBM jmp short ac97_po_cmd ;----------------------------------------------------------------------------- PORTB EQU 061h REFRESH_STATUS EQU 010h ; Refresh signal status delay_100ms: ; 11/11/2023 ; 29/05/2017 ; 24/03/2017 ('codec.asm') ; wait 100 ms push cx mov cx, 400 ; 400*0.25ms _delay_x_ms: call delay1_4ms loop _delay_x_ms pop cx retn delay1_4ms: push ax push cx mov cx, 16 ; close enough. in al, PORTB and al, REFRESH_STATUS mov ah, al ; Start toggle state or cx, cx jz short _d4ms1 inc cx ; Throwaway first toggle _d4ms1: in al, PORTB ; Read system control port and al, REFRESH_STATUS ; Refresh toggles 15.085 microseconds cmp ah, al je short _d4ms1 ; Wait for state change mov ah, al ; Update with new state dec cx jnz short _d4ms1 ; 30/05/2024 clc pop cx pop ax retn ;----------------------------------------------------------------------------- ; returns AL = current index value getCurrentIndex: ; 08/11/2023 ;push dx mov dx, [NABMBAR] add dx, PO_CIV_REG in al, dx ;pop dx uLVI2: ; 06/11/2023 retn ;----------------------------------------------------------------------------- updateLVI: ; 06/11/2023 mov dx, [NABMBAR] add dx, PO_CIV_REG ; (Current Index Value and Last Valid Index value) in ax, dx cmp al, ah ; is current index = last index ? jne short uLVI2 ; 08/11/2023 call getCurrentIndex test byte [flags], ENDOFFILE ;jnz short uLVI1 jz short uLVI0 ; 08/11/2023 ; 08/11/2023 push ax mov dx, [NABMBAR] add dx, PO_SR_REG ; PCM out status register in ax, dx test al, 3 ; bit 1 = Current Equals Last Valid (CELV) ; (has been processed) ; bit 0 = 1 -> DMA Controller Halted (DCH) pop ax jz short uLVI1 uLVI3: xor ax, ax ; zf = 1 retn uLVI0: ; not at the end of the file yet. dec al and al, 1Fh uLVI1: ;call setLastValidIndex ;uLVI2: ;retn ;----------------------------------------------------------------------------- ;input AL = index # to stop on setLastValidIndex: ; 08/11/2023 ;push dx mov dx, [NABMBAR] add dx, PO_LVI_REG out dx, al ;pop dx retn ;============================================================================= ; Detect (& Enable) Audio Device ;============================================================================= ; 06/02/2025 detect_audio_device: ; check for SB16 at first call DetectSB16 jnc short detected call Get_CPU_Type jc short not_detected call DetectAC97 jc short not_detected inc byte [audio_hardware] ; 2 = AC'97 detected: inc byte [audio_hardware] ; 1 = SB16 not_detected: ; 0 = none retn ;============================================================================= ; Detect AC'97 Hardware ;============================================================================= ; 06/02/2025 ; 04/02/2025 - cgaplay.asm ; 30/05/2024 DetectAC97: DetectICH: ; 22/11/2023 ; 19/11/2023 ; 01/11/2023 - TRDOS 386 Kernel v2.0.7 ; 19/11/2023 mov si, valid_ids ; address of Valid ICH (AC97) Device IDs mov cx, valid_id_count pfd_1: lodsd call pciFindDevice jnc short d_ac97_1 loop pfd_1 ;stc retn d_ac97_1: ; eax = BUS/DEV/FN ; 00000000BBBBBBBBDDDDDFFF00000000 ; edx = DEV/VENDOR ; DDDDDDDDDDDDDDDDVVVVVVVVVVVVVVVV ; playwav4.asm - 19/05/2024 mov [bus_dev_fn], eax mov [dev_vendor], edx ; get ICH base address regs for mixer and bus master mov al, NAMBAR_REG call pciRegRead16 ; read PCI registers 10-11 ;and dx, IO_ADDR_MASK ; mask off BIT0 ; 19/05/2024 and dl, 0FEh mov [NAMBAR], dx ; save audio mixer base addr mov al, NABMBAR_REG call pciRegRead16 ;and dx, IO_ADDR_MASK ; 19/05/2024 and dl, 0C0h mov [NABMBAR], dx ; save bus master base addr mov al, AC97_INT_LINE ; Interrupt line register (3Ch) call pciRegRead8 ; 17/02/2017 mov [ac97_int_ln_reg], dl ;clc retn ;----------------------------------------------------------------------------- ; 06/02/2025 ; 04/02/2025 (cgaplay.asm) ; 29/12/2024 (vgaplay3.s) ; 18/12/2024 (ac97play.s) ; -------------------------------------------------------- ; 27/05/2024 - (TRDOS 386 Kernel) audio.s ; -------------------------------------------------------- NOT_PCI32_PCI16 EQU 03FFFFFFFh ; NOT BIT31+BIT30 ; 19/03/2017 NOT_BIT31 EQU 7FFFFFFFh pciFindDevice: ; 19/11/2023 ; 03/04/2017 ('pci.asm', 20/03/2017) ; ; scan through PCI space looking for a device+vendor ID ; ; Entry: EAX=Device+Vendor ID ; ; Exit: EAX=PCI address if device found ; EDX=Device+Vendor ID ; CY clear if found, set if not found. EAX invalid if CY set. ; ; Destroys: ebx, edi ; 19/11/2023 ; 19/11/2023 mov ebx, eax mov edi, 80000000h nextPCIdevice: mov eax, edi ; read PCI registers call pciRegRead32 ; 19/11/2023 cmp edx, ebx je short PCIScanExit ; found ; 19/11/2023 cmp edi, 80FFF800h jnb short pfd_nf ; not found add edi, 100h jmp short nextPCIdevice pfd_nf: stc retn PCIScanExit: ;pushf mov eax, NOT_BIT31 ; 19/03/2017 and eax, edi ; return only bus/dev/fn # retn ; -------------------------------------------------------- pciRegRead: ; 30/05/2024 ; 03/04/2017 ('pci.asm', 20/03/2017) ; ; 8/16/32bit PCI reader ; ; Entry: EAX=PCI Bus/Device/fn/register number ; BIT30 set if 32 bit access requested ; BIT29 set if 16 bit access requested ; otherwise defaults to 8 bit read ; ; Exit: DL,DX,EDX register data depending on requested read size ; ; Note1: this routine is meant to be called via pciRegRead8, ; pciRegread16 or pciRegRead32, listed below. ; ; Note2: don't attempt to read 32 bits of data from a non dword ; aligned reg number. Likewise, don't do 16 bit reads from ; non word aligned reg # push ebx push cx mov ebx, eax ; save eax, dh mov cl, dh and eax, NOT_PCI32_PCI16 ; clear out data size request or eax, BIT31 ; make a PCI access request ; 01/01/2025 (NASM) and al, ~3 ; NOT 3 ; force index to be dword mov dx, PCI_INDEX_PORT out dx, eax ; write PCI selector mov dx, PCI_DATA_PORT mov al, bl and al, 3 ; figure out which port to add dl, al ; read to test ebx, PCI32+PCI16 jnz short _pregr0 in al, dx ; return 8 bits of data mov dl, al mov dh, cl ; restore dh for 8 bit read jmp short _pregr2 _pregr0: test ebx, PCI32 jnz short _pregr1 in ax, dx mov dx, ax ; return 16 bits of data jmp short _pregr2 _pregr1: in eax, dx ; return 32 bits of data mov edx, eax _pregr2: mov eax, ebx ; restore eax and eax, NOT_PCI32_PCI16 ; clear out data size request pop cx pop ebx retn pciRegRead8: and eax, NOT_PCI32_PCI16 ; set up 8 bit read size jmp short pciRegRead ; call generic PCI access pciRegRead16: and eax, NOT_PCI32_PCI16 ; set up 16 bit read size or eax, PCI16 ; call generic PCI access jmp short pciRegRead pciRegRead32: and eax, NOT_PCI32_PCI16 ; set up 32 bit read size or eax, PCI32 ; call generic PCI access jmp pciRegRead ; -------------------------------------------------------- pciRegWrite: ; 30/05/2024 ; 03/04/2017 ('pci.asm', 29/11/2016) ; ; 8/16/32bit PCI writer ; ; Entry: EAX=PCI Bus/Device/fn/register number ; BIT31 set if 32 bit access requested ; BIT30 set if 16 bit access requested ; otherwise defaults to 8bit read ; DL/DX/EDX data to write depending on size ; ; Note1: this routine is meant to be called via pciRegWrite8, ; pciRegWrite16 or pciRegWrite32 as detailed below. ; ; Note2: don't attempt to write 32bits of data from a non dword ; aligned reg number. Likewise, don't do 16 bit writes from ; non word aligned reg # push ebx push ecx mov ebx, eax ; save eax, edx mov ecx, edx and eax, NOT_PCI32_PCI16 ; clear out data size request or eax, BIT31 ; make a PCI access request ; 01/01/2025 (NASM) and al, ~3 ; NOT 3 ; force index to be dword mov dx, PCI_INDEX_PORT out dx, eax ; write PCI selector mov dx, PCI_DATA_PORT mov al, bl and al, 3 ; figure out which port to add dl, al ; write to test ebx, PCI32+PCI16 jnz short _pregw0 mov al, cl ; put data into al out dx, al jmp short _pregw2 _pregw0: test ebx, PCI32 jnz short _pregw1 mov ax, cx ; put data into ax out dx, ax jmp short _pregw2 _pregw1: mov eax, ecx ; put data into eax out dx, eax _pregw2: mov eax, ebx ; restore eax and eax, NOT_PCI32_PCI16 ; clear out data size request mov edx, ecx ; restore dx pop ecx pop ebx retn pciRegWrite8: and eax, NOT_PCI32_PCI16 ; set up 8 bit write size jmp short pciRegWrite ; call generic PCI access pciRegWrite16: and eax, NOT_PCI32_PCI16 ; set up 16 bit write size or eax, PCI16 ; call generic PCI access jmp short pciRegWrite pciRegWrite32: and eax, NOT_PCI32_PCI16 ; set up 32 bit write size or eax, PCI32 ; call generic PCI access jmp pciRegWrite ; ------------------------------------------------------------- ; ac97.inc (11/11/2023) ; ------------------------------------------------------------- ; 06/02/2025 ; 04/02/2025 - cgaplay.asm ; special characters LF EQU 10 CR EQU 13 ; PCI stuff BIT0 EQU 1 BIT1 EQU 2 BIT2 EQU 4 BIT8 EQU 100h BIT9 EQU 200h BIT28 EQU 10000000h BIT30 EQU 40000000h BIT31 EQU 80000000h BUP equ BIT30 ; Buffer Underrun Policy. ; if this buffer is the last buffer ; in a playback, fill the remaining ; samples with 0 (silence) or not. ; It's a good idea to set this to 1 ; for the last buffer in playback, ; otherwise you're likely to get a lot ; of noise at the end of the sound. RR equ BIT1 ; reset registers. Nukes all regs ; except bits 4:2 of this register. ; Only set this bit if BIT 0 is 0 RPBM equ BIT0 ; Run/Pause ; set this bit to start the codec! IO_ENA EQU BIT0 ; i/o decode enable BM_ENA EQU BIT2 ; bus master enable PCI_INDEX_PORT EQU 0CF8h PCI_DATA_PORT EQU 0CFCh PCI32 EQU BIT31 ; bitflag to signal 32bit access PCI16 EQU BIT30 ; bitflag for 16bit access AC97_INT_LINE equ 3Ch ; AC97 Interrupt Line register offset ; Intel ICH2 equates. It is assumed that ICH0 and plain ole ICH are compatible. INTEL_VID equ 8086h ; Intel's PCI vendor ID ; 03/11/2023 - Erdogan Tan (Ref: MenuetOS AC97 WAV Player source code, 2004) SIS_VID equ 1039h NVIDIA_VID equ 10DEh ; Ref: MPXPLAY/SBEMU/KOLIBRIOS AC97 source c. AMD_VID equ 1022h ICH_DID equ 2415h ; ICH device ID ICH0_DID equ 2425h ; ICH0 ICH2_DID equ 2445h ; ICH2 I think there are more ICHes. ; they all should be compatible. ; 17/02/2017 (Erdogan Tan, ref: ALSA Device IDs, ALSA project) ICH3_DID equ 2485h ; ICH3 ICH4_DID equ 24C5h ; ICH4 ICH5_DID equ 24D5h ; ICH5 ICH6_DID equ 266Eh ; ICH6 ESB6300_DID equ 25A6h ; 6300ESB ESB631X_DID equ 2698h ; 631XESB ICH7_DID equ 27DEh ; ICH7 ; 03/11/2023 - Erdogan Tan (Ref: MenuetOS AC97 WAV Player source code, 2004) MX82440_DID equ 7195h SI7012_DID equ 7012h NFORCE_DID equ 01B1h NFORCE2_DID equ 006Ah AMD8111_DID equ 746Dh AMD768_DID equ 7445h ; 03/11/2023 - Erdogan Tan - Ref: MPXPLAY/SBEMU/KOLIBRIOS AC97 source code CK804_DID equ 0059h MCP04_DID equ 003Ah CK8_DID equ 008Ah NFORCE3_DID equ 00DAh CK8S_DID equ 00EAh NAMBAR_REG equ 10h ; native audio mixer BAR NABMBAR_REG equ 14h ; native audio bus mastering BAR CODEC_MASTER_VOL_REG equ 02h ; master volume CODEC_MASTER_TONE_REG equ 08h ; master tone (R+L) CODEC_PCM_OUT_REG equ 18h ; PCM output volume CODEC_EXT_AUDIO_REG equ 28h ; extended audio CODEC_EXT_AUDIO_CTRL_REG equ 2Ah ; extended audio control CODEC_PCM_FRONT_DACRATE_REG equ 2Ch ; PCM out sample rate ; ICH supports 3 different types of register sets for three types of things ; it can do, thus: ; ; PCM in (for recording) aka PI ; PCM out (for playback) aka PO ; MIC in (for recording) aka MC PI_BDBAR_REG equ 0 ; PCM in buffer descriptor BAR PO_BDBAR_REG equ 10h ; PCM out buffer descriptor BAR GLOB_CNT_REG equ 2Ch ; Global control register GLOB_STS_REG equ 30h ; Global Status register (RO) PI_CR_REG equ 0Bh ; PCM in Control Register PO_CR_REG equ 1Bh ; PCM out Control Register MC_CR_REG equ 2Bh ; MIC in Control Register PCI_CMD_REG EQU 04h ; reg 04h, command register CTRL_ST_CREADY equ BIT8+BIT9+BIT28 ; Primary Codec Ready CODEC_REG_POWERDOWN equ 26h PO_CIV_REG equ 14h ; PCM out current Index value (RO) PO_LVI_REG equ 15h ; PCM out Last Valid Index PO_SR_REG equ 16h ; PCM out Status register BDL_SIZE equ 32*8 ; Buffer Descriptor List size ; 07/02/2025 PO_PICB_REG equ 18h ; PCM Out Position In Current Buffer Register ; ------------------------------------------------------------- ; 06/05/2025 ; 22/12/2024 align 4 ; 29/05/2024 (TRDOS 386) ; 17/02/2017 ; Valid ICH device IDs valid_ids: ;dd (ICH_DID shl 16) + INTEL_VID ; 8086h:2415h dd (ICH_DID << 16) + INTEL_VID ; 8086h:2415h dd (ICH0_DID << 16) + INTEL_VID ; 8086h:2425h dd (ICH2_DID << 16) + INTEL_VID ; 8086h:2445h dd (ICH3_DID << 16) + INTEL_VID ; 8086h:2485h dd (ICH4_DID << 16) + INTEL_VID ; 8086h:24C5h dd (ICH5_DID << 16) + INTEL_VID ; 8086h:24D5h dd (ICH6_DID << 16) + INTEL_VID ; 8086h:266Eh dd (ESB6300_DID << 16) + INTEL_VID ; 8086h:25A6h dd (ESB631X_DID << 16) + INTEL_VID ; 8086h:2698h dd (ICH7_DID << 16) + INTEL_VID ; 8086h:27DEh ; 03/11/2023 - Erdogan Tan dd (MX82440_DID << 16) + INTEL_VID ; 8086h:7195h dd (SI7012_DID << 16) + SIS_VID ; 1039h:7012h dd (NFORCE_DID << 16) + NVIDIA_VID ; 10DEh:01B1h dd (NFORCE2_DID << 16) + NVIDIA_VID ; 10DEh:006Ah dd (AMD8111_DID << 16) + AMD_VID ; 1022h:746Dh dd (AMD768_DID << 16) + AMD_VID ; 1022h:7445h dd (CK804_DID << 16) + NVIDIA_VID ; 10DEh:0059h dd (MCP04_DID << 16) + NVIDIA_VID ; 10DEh:003Ah dd (CK8_DID << 16) + NVIDIA_VID ; 1022h:008Ah dd (NFORCE3_DID << 16) + NVIDIA_VID ; 10DEh:00DAh dd (CK8S_DID << 16) + NVIDIA_VID ; 10DEh:00EAh valid_id_count equ (($ - valid_ids)>>2) ; 05/11/2023 dd 0 ;============================================================================= ; Detect Sound Blaster 16 sound card (or compatible hardware) ;============================================================================= ; 06/02/2025 ; 04/02/2025 - cgaplay2.asm ; 24/11/2024 ; Ref: TRDOS 386 Kernel v2.0.9 audio.s (06/06/2024) ; DetectSB procedure (06/08/2022, v2.0.5) DetectSB16: ; 06/08/2022 - TRDOS 386 v2.0.5 ; 24/04/2017 ScanPort: mov bx, 0210h ; start scanning ports ; 210h, 220h, .. 260h ResetDSP: ; 26/11/2024 mov dx, bx ; try to reset the DSP. add dl, 06h mov al, 1 out dx, al in al, dx in al, dx in al, dx in al, dx xor al, al out dx, al ;add dx, 08h add dl, 08h mov cx, 100 WaitID: in al, dx or al, al js short GetID loop WaitID jmp short NextPort GetID: ;sub dx, 04h sub dl, 04h in al, dx cmp al, 0AAh je short Found ;add dx, 04h add dl, 04h loop WaitID NextPort: ;add bx, 10h ; if not response, add bl, 10h ;cmp bx, 260h ; try the next port. cmp bl, 60h jbe short ResetDSP stc retn Found: mov [audio_io_base], bx ; SB Port Address Found! ScanIRQ: SetIrqs: sub al, al ; 0 mov [IRQnum], al ; reset ; 27/11/2024 ;mov [audio_intr], al ; 25/11/2024 ; save IRQ status in al, 21h ; save the IMR. mov [IRQstatus], al ; ah > 0 -> set IRQ vector ; al = IRQ number mov ax, 105h ; IRQ 5 ; 26/11/2024 mov dx, IRQ5_service call set_hardware_int_vector mov ax, 107h ; IRQ 7 ; 26/11/2024 mov dx, IRQ7_service call set_hardware_int_vector mov dx, [audio_io_base] ; tells to the SB to ;add dx, 0Ch ; generate a IRQ! add dl, 0Ch WaitSb: in al, dx or al, al js short WaitSb mov al, 0F2h out dx, al ; 24/11/2024 xor cx, cx ; wait until IRQ level WaitIRQ: mov al, [IRQnum] cmp al, 0 ; is changed or timeout. ja short IrqOk dec cx jnz short WaitIRQ jmp short RestoreIrqs IrqOk: ;;; ; 27/11/2024 mov [audio_intr], al mov dx, [audio_io_base] ;add dx, 0Eh add dl, 0Eh ; 8bit DMA-mode int ack in al, dx ; SB acknowledge. ; ; 10/02/2025 ; 16bit DMA mode intr ack is ; not necessary for initial IRQ scan ; ;inc dx ; 0Fh ; 16bit DMA-mode int ack ;in al, dx ; SB 16 acknowledge. ; ;;; mov al, 20h out 20h, al ; Hardware acknowledge. RestoreIrqs: ; ah = 0 -> reset IRQ vector ; al = IRQ number mov ax, 5 ; IRQ 5 call set_hardware_int_vector mov ax, 7 ; IRQ 7 call set_hardware_int_vector cmp byte [IRQnum], 1 ; IRQ level was changed? retn ;----------------------------------------------------------------------------- ; 06/02/2025 ; 24/11/2024 set_hardware_int_vector: or ah, ah jnz short shintv_1 ; set user's audio interrupt handler rhintv_1: ; reset the interrupt vector to the old interrupt handler push ds cmp al, 5 jne short rhintv_2 ; 25/11/2024 ; restore IRQ 5 status mov ah, [IRQstatus] in al, 21h and ah, 00100000b ; 20h or al, ah out 21h, al mov dx, [old_irq5v_o] mov ds, [old_irq5v_s] shintv_3: mov al, 0Dh mov ah, 25h int 21h pop ds retn rhintv_2: ; 25/11/2024 ; restore IRQ 7 status mov ah, [IRQstatus] in al, 21h and ah, 10000000b ; 80h or al, ah out 21h, al mov dx, [old_irq7v_o] mov ds, [old_irq7v_s] shintv_4: mov al, 0Fh mov ah, 25h int 21h pop ds retn shintv_1: push es cmp al, 5 jne short shintv_2 ; INT 0Dh = IRQ 5 (default) interrupt number ; 25/11/2024 ; enable IRQ 5 ; 26/11/2024 in al, 21h and al, 11011111b out 21h, al mov al, 0Fh mov ah, 35h ; Get Interrupt Vector int 21h mov [old_irq5v_s], es mov [old_irq5v_o], bx pop es push ds ; 27/11/2024 ;mov dx, IRQ5_service jmp short shintv_3 shintv_2: ; al = 7 ; INT 0Fh = IRQ 7 (default) interrupt number ; 25/11/2024 ; enable IRQ 7 ; 26/11/2024 in al, 21h and al, 01111111b out 21h, al mov al, 0Fh mov ah, 35h ; Get Interrupt Vector int 21h mov [old_irq7v_s], es mov [old_irq7v_o], bx pop es push ds ; 27/11/2024 ;mov dx, IRQ7_service jmp short shintv_4 IRQ5_service: mov byte [cs:IRQnum], 5 iret IRQ7_service: mov byte [cs:IRQnum], 7 iret ; 27/11/2024 IRQ_service: push ds push dx push ax ; push cs pop ds mov byte [IRQnum], 5 mov dx, [audio_io_base] ;add dx, 0Eh add dl, 0Eh ; 8bit DMA-mode int ack cmp byte [WAVE_BitsPerSample], 8 jna short irq_ack_@ ;inc dl ; 0Fh ; 16bit DMA-mode int ack ; 10/02/2025 inc dx irq_ack_@: in al, dx ; SB acknowledge. ; mov al, 20h out 20h, al ; Hardware acknowledge ; pop ax pop dx pop ds iret ;----------------------------------------------------------------------------- ; get CPU type - AC'97 audio system will not be checked if CPU is not 80386+ ;----------------------------------------------------------------------------- ; Ref: ibmdos7.s - 10/07/2024 (Retro DOS v5.0, PCDOS 7.1 kernel) ; 07/02/2025 ; 06/02/2025 Get_CPU_Type: pushf xor ax, ax ; 0000 into AX push ax ; put it on the stack... popf ; ...then shove it into the flags pushf ; get it back out of the flags... pop ax ; ...and into ax and ax, 0F000h ; mask off high four bits cmp ax, 0F000h ; was it all 1's? je short cpu_8086 ; yes; it's an 8086 or 8088 mov ax, 0F000h ; now try to set the high four bits.. push ax popf pushf pop ax ; ...and see what happens and ax, 0F000h ; any high bits set ? jz short cpu_286 ; no, it's an 80286 cpu_386: ; yes, it's an 80386 popf clc retn cpu_8086: cpu_286: popf stc retn ;----------------------------------------------------------------------------- ; settextmode - restore the VGA 80x25x16 text mode ;----------------------------------------------------------------------------- ; 07/02/2025 settextmode: mov ax, 0003h int 10h retn ;============================================================================= ; drawscopes - draw wave/voice sample scopes ;============================================================================= ; 07/02/2025 drawscopes: call get_current_sound_data mov si, g_buffer xor cx, cx xor dx, dx xor di, di drawscope0: lodsw xor ah, 80h xor bh, bh mov bl, ah ; Left Channel shl bx, 1 mov ax, [RowOfs+bx] mov [NewScope_L+di], ax xor bh, bh lodsw xor ah, 80h mov bl, ah ; Right Channel shl bx, 1 mov ax, [RowOfs+bx] mov [NewScope_R+di], ax add di, 2 inc cl jnz short drawscope0 mov dx, 3C4h mov ax, 0802h out dx, ax ;mov dx, 3CEh mov dl, 0CEh mov al, 08h out dx, al inc dx xor si, si push es ; *** mov bx, 0A000h mov es, bx mov bx, 0645h ; 0A0645h drawscopel4: mov al, 80h drawscopel2: push ax ; ** push dx ; * out dx, al ;mov cx, 32 mov cl, 32 mov ax, 0FF00h drawscopel3: mov di, [OldScope_L+si] mov dx, [NewScope_L+si] cmp di, dx je short drawscopef3 add di, bx mov [es:di], al ; L mov di, dx add di, bx mov [es:di], ah ; L mov [OldScope_L+si], dx drawscopef3: mov di, [OldScope_R+si] mov dx, [NewScope_R+si] cmp di, dx je short drawscopef4 add di, bx mov [es:di+38], al ; R mov di, dx add di, bx mov [es:di+38], ah ; R mov [OldScope_R+si], dx drawscopef4: add si, 2*8 inc bx loop drawscopel3 pop dx ; * pop ax ; ** sub si, 2*256-2 sub bx, 32 shr al, 1 jnz short drawscopel2 ; 07/02/2025 clc pop es ; *** retn ;============================================================================= ; Get Current Sound Data ;============================================================================= ; Reference: TRDOS 386 v2.0.9 Kernel - audio.s file (28/01/2025) ; 08/02/2025 (*) ; !!! 18.2 block/second buffer sizing for proper wave scopes !!! ; (wave graphics synchronization) ; 07/02/2025 get_current_sound_data: ; get current sound (PCM out) data for graphics mov di, g_buffer cmp byte [audio_hardware], 1 ja short ac97_current_sound_data ;----------------------------------------------------------------------------- ; 08/02/2025 (*) sb16_current_sound_data: mov cx, [g_samples] cmp byte [WAVE_BitsPerSample], 16 jne short sb16_gcd_1 ; 8 bit DMA channel in al, 0C6h ; DMA channel 5 count register mov ah, al in al, 0C6h xchg ah, al shl ax, 1 ; word count -> byte count jmp short sb16_gcd_2 sb16_gcd_1: in al, 03h ; DMA channel 1 count register mov ah, al in al, 03h xchg ah, al sb16_gcd_2: ;cmp ax, cx ;jnb short sb16_gcd_3 ;; remain count < graphics bytes ;mov ax, cx ; fix remain count to data size ; 08/02/2025 (*) mov bx, [buffersize] ; half buffer size cmp ax, bx jna short sb16_gcd_3 ; 2nd half xor bx, bx ; 1st half sb16_gcd_3: ;mov si, dma_buffer+dma_buffer_size ; 32768 ;sub si, ax ; 08/02/2025 (*) lea si, [dma_buffer+bx] ; start of 1st half or 2nd half ; si = dma buffer offset ; cx = load (source) count ; di = g_buffer jmp word [sound_data_copy] ;----------------------------------------------------------------------------- ; 10/02/2025 ; 09/02/2025 ; 08/02/2025 (*) ; 08/02/2025 ; 07/02/2025 ac97_current_sound_data: ;mov cx, 1024 ; always 16bit stereo ; 08/02/2025 mov cx, 512 mov dx, PO_CIV_REG ; Position In Current Buff Reg add dx, [NABMBAR] in al, dx ; current index value mov bx, [WAV_BUFFER_1] test al, 1 jz short ac97_gcd_1 mov bx, [WAV_BUFFER_2] ac97_gcd_1: ; 10/02/2025 ;mov dx, PO_PICB_REG ; Position In Current Buff Reg ;add dx, [NABMBAR] ;in ax, dx ; remain words ; 08/02/2025 ;shl ax, 1 ; remain bytes ac97_gcd_2: ;cmp ax, cx ;jnb short ac97_gcd_3 ;; remain count < graphics bytes ;mov ax, cx ; fix remain count to data size ; 09/02/2025 ; 08/02/2025 (*) xor si, si ; 1st half ac97_gcd_3: push ds ; 08/02/2025 ;mov si, [buffersize] ; 16 bit sample count ;sub si, ax ;shl si, 1 ; byte offset ; 09/02/2025 ; si = 0, start of the wave/pcm data (dma) buffer ; (buffer size is adjusted for playing in 1/18.2 second) mov ds, bx ; ds:si = dma buffer offset ; cx = load (source) count ; es:di = g_buffer ; AC97 dma buffer contains 16bit stereo samples (only) ; copy samples to g_buffer ;shr cx, 1 rep movsw pop ds retn ;----------------------------------------------------------------------------- ; 07/02/2025 sdc_16bit_stereo: ; si = dma buffer offset ; cx = load (source) count = 1024 ; di = g_buffer shr cx, 1 rep movsw retn ;----------------------------------------------------------------------------- ; 07/02/2025 sdc_16bit_mono: ; si = dma buffer offset ; cx = load (source) count = 512 ; di = g_buffer shr cx, 1 sdc_16bm_loop: lodsw stosw stosw loop sdc_16bm_loop retn ;----------------------------------------------------------------------------- ; 07/02/2025 sdc_8bit_stereo: ; si = dma buffer offset ; cx = load (source) count = 512 ; di = g_buffer ; convert to 16 bit sample sdc_8bs_loop: lodsb sub al, 80h ; middle = 0, min = -128, max = 127 shl ax, 8 stosw loop sdc_8bs_loop retn ;----------------------------------------------------------------------------- ; 07/02/2025 sdc_8bit_mono: ; si = dma buffer offset ; cx = load (source) count = 256 ; di = g_buffer ; convert to 16 bit sample sdc_8bm_loop: lodsb sub al, 80h ; middle = 0, min = -128, max = 127 shl ax, 8 stosw ; L ; convert to stereo stosw ; R loop sdc_8bm_loop retn ;----------------------------------------------------------------------------- ; Memory Allocation ;----------------------------------------------------------------------------- ; 07/02/2025 ; Release memory not used setFree: mov bx, 65536/16 ; 4K paragraphs ; 17/02/2017 (Erdogan Tan) mov ah, 4Ah ; pass new length to DOS int 21h retn ; back to caller ; new size (allocated memory) = 64KB ;----------------------------------------------------------------------------- ; 08/02/2025 ; bx = number of paragraphs ; 07/02/2025 memAlloc: ; input: AX = # of paragraphs required ; output: AX = segment of block to use ; 08/02/2025 ;mov bx, ax mov ah, 48h int 21h retn ;----------------------------------------------------------------------------- ; Print/Display Text ;----------------------------------------------------------------------------- ; 07/02/2025 ; 04/02/2025 - cgaplay.asm ; 01/01/2025 ; 21/12/2024 ; 14/11/2024 PrintString: mov ah, 0Eh mov bx, 0Fh ; char attribute & color (white) p_msg: ; ah = 0Eh ; bh = 0 ; bl = color ; ds:si = msg address p_next_chr: lodsb or al, al jz short p_retn ; retn int 10h jmp short p_next_chr p_retn: retn ;----------------------------------------------------------------------------- ;============================================================================= ; Load IFF/ILBM files for VGA 640x480x16 graphics mode ;============================================================================= ; EX1B.ASM (21/6/1994, Carlos Hasan; MSDOS, 'RUNME.EXE', 'TNYPL211') ; 21/10/2017 (TRDOS 386, 'tmodplay.s', Erdogan Tan, NASM syntax) ;----------------------------------------------------------------------------- ; EQUATES AND STRUCTURES ;----------------------------------------------------------------------------- ID_FORM equ 4D524F46h ; IFF/ILBM chunk IDs ID_ILBM equ 4D424C49h ID_BMHD equ 44484D42h ID_CMAP equ 50414D43h ID_BODY equ 59444F42h struc Form ; IFF/ILBM header file format .ID: resd 1 .Length: resd 1 .Type: resd 1 .size: endstruc struc Chunk ; IFF/ILBM header chunk format .ID: resd 1 .Length: resd 1 .size: endstruc struc BMHD ; IFF/ILBM BMHD chunk format .Width: resw 1 .Height: resw 1 .PosX: resw 1 .PosY: resw 1 .Planes: resb 1 .Masking: resb 1 .Compression: resb 1 .Pad: resb 1 .Transparent: resw 1 .AspectX resb 1 .AspectY: resb 1 .PageWidth: resw 1 .PageHeight: resw 1 .size: endstruc struc CMAP ; IFF/ILBM CMAP chunk format .Colors: resb 768 .size: endstruc ;------------------------------------------------------------------------------ ; bswap - macro to reverse the byte order of a 32-bit register, converting ; a value in little/big endian form to big/little endian form. ;------------------------------------------------------------------------------ ;%macro bswap 1 ; xchg al, ah ; rol eax, 16 ; xchg al, ah ;%endmacro ;------------------------------------------------------------------------------ ; putlbm - draw the IFF/ILBM picture on VGA 640x480x16 graphics mode ; In: ; ESI = IFF/ILBM image file address ;------------------------------------------------------------------------------ ; 07/02/2025 putlbm: ; 06/02/2025 mov si, LOGO_ADDRESS ;pushad ; check if this is a valid IFF/ILBM Deluxe Paint file ; cmp dword [si+Form.ID], ID_FORM ; jne short putlbmd0 ; cmp dword [si+Form.Type], ID_ILBM ; jne short putlbmd0 ; get the IFF/ILBM file length in bytes ;mov eax, [esi+Form.Length] ;bswap eax ;mov ecx, eax mov cx, [si+Form.Length+2] xchg cl, ch ; decrease the file length and updates the file pointer ;sub ecx, 4 sub cx, 4 add si, Form.size ; IFF/ILBM main parser body loop putlbml0: ;test ecx, ecx test cx, cx jle short putlbmd1 ; get the next chunk ID and length in bytes ;mov ebx, [si+Chunk.ID] ;mov eax, [si+Chunk.Length] ;bswap eax ;xchg ebx, eax mov ax, [si+Chunk.ID] mov bx, [si+Chunk.Length+2] xchg bh, bl add si, Chunk.size ; word align the chunk length and decrease the file length counter ;inc ebx inc bx and bl, 0FEh ; ~1 ;sub ecx, Chunk.size sub cx, Chunk.size ;sub ecx, ebx sub cx, bx ; check for the BMHD/CMAP/BODY chunk headers ;cmp eax, ID_BMHD cmp ax, 'BM' je short putlbmf0 ;cmp eax, ID_CMAP cmp ax, 'CM' je short putlbmf1 ;cmp eax, ID_BODY cmp ax, 'BO' je short putlbmf2 ; advance to the next IFF/ILBM chunk structure putlbmc0: ;add esi, ebx add si, bx jmp short putlbml0 putlbmd0: stc ;popad retn ; process the BMHD bitmap header chunk putlbmf0: cmp byte [si+BMHD.Planes], 4 jne short putlbmd0 cmp byte [si+BMHD.Compression], 1 jne short putlbmd0 cmp byte [si+BMHD.Pad], 0 jne short putlbmd0 ;movzx eax, word [esi+BMHD.Width] mov ax, [si+BMHD.Width] xchg al, ah ;add eax, 7 ;shr eax, 3 add ax, 7 shr ax, 3 ;mov [picture.width], eax mov [picture.width], ax ;movzx eax, word [esi+BMHD.Height] mov ax, [si+BMHD.Height] xchg al, ah ;mov [picture.height], eax mov [picture.height], ax jmp short putlbmc0 putlbmd1: clc ;popad retn ; process the CMAP colormap chunk putlbmf1: mov dx, 3C8h xor al, al out dx, al inc dx putlbml1: mov al, [si] shr al, 2 out dx, al inc si dec bx jg short putlbml1 jmp putlbml0 ; process the BODY bitmap body chunk putlbmf2: ;pushad pusha ;mov edi, 0A0000h ;cld push es mov di, 0A000h mov es, di xor di, di mov dx, 3CEh mov ax, 0FF08h out dx, ax ;mov dx, 3C4h mov dl, 0C4h mov al, 02h out dx, al inc dx ;mov ecx, [picture.height] mov cx, [picture.height] putlbml2: ;push ecx push cx mov al, 11h putlbml3: ;push eax ;push edi push ax push di out dx, al ;mov ebx, [picture.width] mov bx, [picture.width] putlbml4: lodsb xor ch, ch test al, al jl short putlbmf3 ;movzx ecx, al mov cl, al ;inc ecx inc cx ;sub ebx, ecx sub bx, cx rep movsb jmp short putlbmc4 putlbmf3: neg al ;movzx ecx, al mov cl, al ; ch = 0 ;inc ecx ;sub ebx, ecx inc cx sub bx, cx lodsb rep stosb putlbmc4: ;test ebx, ebx test bx, bx jg short putlbml4 ;pop edi ;pop eax pop di pop ax add al, al jnc short putlbml3 ;add edi, 80 add di, 80 ;pop ecx pop cx loop putlbml2 pop es ;popad popa jmp putlbmc0 ;------------------------------------------------------------------------------ ;------------------------------------------------------------------------------ align 2 ; 22/10/2017 LOGO_ADDRESS: ; 27/10/2017 incbin "TINYPLAY.LBM" ;============================================================================= ; preinitialized data ;============================================================================= db 0 FileHandle: dd -1 db 0 Credits: db 'Tiny WAV Player for Retro DOS by Erdogan Tan. ' db 'February 2025.',10,13,0 db '10/02/2025',10,13 reset: db 0 msg_usage: db 10,13 db 'usage: twavplay filename.wav',10,13,0 noDevMsg: db 10,13 db 'Error: Unable to find a proper audio device !' db 10,13,0 noFileErrMsg: db 10,13 db 'Error: file not found.',10,13,0 not_valid_wavf: db 10,13 db 'Not a proper/valid WAV file !',10,13,0 ; 08/02/2025 sb16_init_err_msg: db 10,13 db 'Sound Blaster 16 initialization error !',10,13,0 ac97_init_err_msg: db 10,13 db 'AC97 hardware initialization error !',10,13,0 ;init_err_msg: ;db 10,13 ;db 'Audio system initialization error !',10,13,0 msg_no_vra: db 10,13 db "No VRA support ! Only 48 kHZ sample rate supported !" db 10,13,0 hex_chars: db "0123456789ABCDEF", 0 msgAC97Info: db 0Dh, 0Ah db "AC97 Audio Controller & Codec Info", 0Dh, 0Ah db "Vendor ID: " msgVendorId: db "0000h Device ID: " msgDevId: db "0000h", 0Dh, 0Ah db "Bus: " msgBusNo: db "00h Device: " msgDevNo: db "00h Function: " msgFncNo: db "00h" db 0Dh, 0Ah db "NAMBAR: " msgNamBar: db "0000h " db "NABMBAR: " msgNabmBar: db "0000h IRQ: " msgIRQ: dw 3030h db 0Dh, 0Ah, 0 msgWavFileName: db 0Dh, 0Ah, "WAV File Name: ",0 msgSampleRate: db 0Dh, 0Ah, "Sample Rate: " msgHertz: db "00000 Hz, ", 0 msg8Bits: db "8 bits, ", 0 msgMono: db "Mono", 0Dh, 0Ah, 0 msg16Bits: db "16 bits, ", 0 msgStereo: db "Stereo" nextline: db 0Dh, 0Ah, 0 msgVRAheader: db "VRA support: " db 0 msgVRAyes: db "YES", 0Dh, 0Ah, 0 msgVRAno: db "NO ", 0Dh, 0Ah db "(Interpolated sample rate playing method)" db 0Dh, 0Ah, 0 msgSB16Info: db 0Dh, 0Ah db " Audio Hardware: Sound Blaster 16", 0Dh, 0Ah db " Base Port: " msgBasePort: db "000h", 0Dh, 0Ah db " IRQ: " msgSB16IRQ: db 30h db 0Dh, 0Ah, 0 ; 07/02/2025 msgPressAKey: db 0Dh, 0Ah db ' ... press a key to continue ... ' db 0Dh, 0Ah, 0 ; 07/02/2025 half_buffer: db 1 vra_ok: db '.. VRA OK ..', 0Dh, 0Ah,0 ;============================================================================= ; uninitialized data ;============================================================================= ; 06/02/2025 ; BSS bss_start: ABSOLUTE bss_start alignb 4 ;------------------------------------------------------------------------------ ; IFF/ILBM DATA ;------------------------------------------------------------------------------ ; 07/02/2025 picture.width: resw 1 ; current picture width and height picture.height: resw 1 ;------------------------------------------------------------------------------ ; 07/02/2025 (SB16) old_irq5v_o: resw 1 old_irq5v_s: resw 1 old_irq7v_o: resw 1 old_irq7v_s: resw 1 ;------------------------------------------------------------------------------ ;;;;;;; WAVFILEHEADERbuff: RIFF_ChunkID: resd 1 ; Must be equal to "RIFF" - big-endian ; 0x52494646 RIFF_ChunkSize: resd 1 ; Represents total file size, not ; including the first 2 fields ; (Total_File_Size - 8), little-endian RIFF_Format: resd 1 ; Must be equal to "WAVE" - big-endian ; 0x57415645 ;; WAVE header parameters ("Sub-chunk") WAVE_SubchunkID: resd 1 ; Must be equal to "fmt " - big-endian ; 0x666d7420 WAVE_SubchunkSize: resd 1 ; Represents total chunk size WAVE_AudioFormat: resw 1 ; PCM (Raw) - is 1, other - is a form ; of compression, not supported. WAVE_NumChannels: resw 1 ; Number of channels, Mono-1, Stereo-2 WAVE_SampleRate: resd 1 ; Frequency rate, in Hz (8000, 44100 ...) WAVE_ByteRate: resd 1 ; SampleRate * NumChannels * BytesPerSample WAVE_BlockAlign: resw 1 ; NumChannels * BytesPerSample ; Number of bytes for one sample. WAVE_BitsPerSample: resw 1 ; 8 = 8 bits, 16 = 16 bits, etc. ;; DATA header parameters DATA_SubchunkID: resd 1 ; Must be equal to "data" - big-endian ; 0x64617461 DATA_SubchunkSize: resd 1 ; NumSamples * NumChannels * BytesPerSample ; Number of bytes in the data. ;;;;;;; ;------------------------------------------------------------------------------ wav_file_name: resb 80 ; wave file, path name (<= 80 bytes) resw 1 ;------------------------------------------------------------------------------ ac97_int_ln_reg: audio_intr: resb 1 VRA: resb 1 ; Variable Rate Audio Support Status fbs_shift: resb 1 flags: resb 1 dev_vendor: resd 1 bus_dev_fn: resd 1 audio_io_base: ; Sound Blaster 16 base port address (220h) NAMBAR: resw 1 NABMBAR: resw 1 audio_hardware: resb 1 IRQnum: resb 1 IRQstatus: resb 1 volume: resb 1 stopped: resb 1 ;------------------------------------------------------------------------------ alignb 16 RowOfs: resw 256 NewScope_L: resw 256 NewScope_R: resw 256 OldScope_L: resw 256 OldScope_R: resw 256 ;------------------------------------------------------------------------------ ; 08/02/2025 ; 256 byte buffer for descriptor list BDL_BUFFER: resw 1 ; segment of 256 byte BDL buffer ; DMA buffers WAV_BUFFER_1: resw 1 ; segment of 1st wav/pcm data buffer WAV_BUFFER_2: resw 1 ; segment of 2nd wav/pcm data buffer ;------------------------------------------------------------------------------ loadfromwavfile: resw 1 ; 'loadfromfile' or load+conversion proc address loadsize: resw 1 ; (.wav file) read count (bytes) per one time buffersize: resd 1 ; 16 bit samples (not bytes) count: resw 1 ; byte count of one (wav file) read LoadedDataBytes: resd 1 ; total read/load count timerticks: resd 1 ; (to eliminate excessive lookup of events in tuneloop) ; (in order to get the emulator/qemu to run correctly) bss_end: ;------------------------------------------------------------------------------ ; 07/02/2025 sound_data_copy: ; address pointer for g_buffer fast (conversion) copy resw 1 g_samples: resw 1 ; count of samples for g_buffer copy/transfer alignb 16 ; 08/02/2025 ;bdl_buffer: resb 256 g_buffer: resb 1024 ; 16 bit stereo samples for wave graphics display ;dma_buffer: ;temp_buffer: ;resb 50600 ; (44.1kHZ stereo 12650 samples) ; ; 07/02/2025 ; resb 33680 ; (44.1kHZ stereo 8418 samples) ; 08/02/2025 temp_buffer: ; max. 10656 bytes (no-VRA AC97) ; 10600: 44.1 kHZ stereo 2438 samples, 2650 (48kHZ) samples ; 10656: 11.025 kHZ stereo 612 samples, 2664 (48kHZ) samples ; 10508: 22.050 kHZ stereo 1207 samples, 2627 (48kHZ) samples ; 10544: 24 kHZ stereo 1318 samples, 2636 (48kHZ) samples ; 10548: 32 kHZ stereo 1758 samples, 2637 (48kHZ) samples ; 10548: 16 kHZ stereo 879 samples, 2637 (48kHZ) samples ; 10544: 12 kHZ stereo 659 samples, 2636 (48kHZ) samples ; 10560: 8 kHZ stereo 440 samples, 2640 (48kHZ) samples dma_buffer: ; max. 21120 bytes (SB16) resb 10560 resb 10560 ;------------------------------------------------------------------------------ ;wav_buffer1 equ dma_buffer ;wav_buffer2 equ wav_buffer1 + LOADSIZE ; + 16384 ;------------------------------------------------------------------------------