1 ; **************************************************************************** 2 ; PLAYWAV.ASM - ICH AC97 .wav player for DOS. PLAYWAV.COM 3 ; ---------------------------------------------------------------------------- 4 ; Last Update: 17/02/2017 5 ; ---------------------------------------------------------------------------- 6 ; Beginning: 17/02/2017 7 ; ---------------------------------------------------------------------------- 8 ; Assembler: NASM version 2.11 9 ; nasm playwav.asm -l playwav.lst -o PLAYWAV.COM 10 ; ---------------------------------------------------------------------------- 11 ; Derived from '.wav file player for DOS' Jeff Leyda, Sep 02, 2002 12 ; **************************************************************************** 13 ; Modidified from 'PLAYER.COM' for VIA VT8233 wav player source code by 14 ; (PLAYER.ASM) by Erdogan Tan (07/11/2016 - 08/12/2016) 15 16 [BITS 16] 17 18 [ORG 100h] 19 20 %include 'ac97.inc' ; 17/02/2017 1 <1> ; 17/02/2017 (Erdogan Tan, PLAYWAV.ASM) 2 <1> ; constant.inc & codec.inc (for ICH AC97 wav player, 'PLAYWAV.COM') 3 <1> 4 <1> ; ---------------------------------------------------------------------------- 5 <1> ; CONSTANT.INC 6 <1> ; ---------------------------------------------------------------------------- 7 <1> 8 <1> ;constants of stuff that seem hard to remember at times. 9 <1> 10 <1> TRUE EQU 1 11 <1> FALSE EQU 0 12 <1> 13 <1> ENABLED EQU 1 14 <1> DISABLED EQU 0 15 <1> 16 <1> BIT0 EQU 1 17 <1> BIT1 EQU 2 18 <1> BIT2 EQU 4 19 <1> BIT3 EQU 8 20 <1> BIT4 EQU 10h 21 <1> BIT5 EQU 20h 22 <1> BIT6 EQU 40h 23 <1> BIT7 EQU 80h 24 <1> BIT8 EQU 100h 25 <1> BIT9 EQU 200h 26 <1> BIT10 EQU 400h 27 <1> BIT11 EQU 800h 28 <1> BIT12 EQU 1000h 29 <1> BIT13 EQU 2000h 30 <1> BIT14 EQU 4000h 31 <1> BIT15 EQU 8000h 32 <1> BIT16 EQU 10000h 33 <1> BIT17 EQU 20000h 34 <1> BIT18 EQU 40000h 35 <1> BIT19 EQU 80000h 36 <1> BIT20 EQU 100000h 37 <1> BIT21 EQU 200000h 38 <1> BIT22 EQU 400000h 39 <1> BIT23 EQU 800000h 40 <1> BIT24 EQU 1000000h 41 <1> BIT25 EQU 2000000h 42 <1> BIT26 EQU 4000000h 43 <1> BIT27 EQU 8000000h 44 <1> BIT28 EQU 10000000h 45 <1> BIT29 EQU 20000000h 46 <1> BIT30 EQU 40000000h 47 <1> BIT31 EQU 80000000h 48 <1> 49 <1> ;special characters 50 <1> NUL EQU 0 51 <1> NULL EQU 0 52 <1> BELL EQU 07 53 <1> BS EQU 08 54 <1> TAB EQU 09 55 <1> LF EQU 10 56 <1> CR EQU 13 57 <1> ESCAPE EQU 27 ;ESC is a reserved word.... 58 <1> 59 <1> 60 <1> ;file stuff 61 <1> READONLY EQU BIT0 62 <1> HIDDEN EQU BIT1 63 <1> SYSTEM EQU BIT2 64 <1> VOLUME EQU BIT3 ;ignored for file access 65 <1> DIRECTORY EQU BIT4 ;must be 0 for file access 66 <1> ARCHIVE EQU BIT5 67 <1> SHAREABLE EQU BIT7 ;for novell networks 68 <1> OPEN EQU 2 ; open existing file 69 <1> CREATE EQU 1 ; create new file 70 <1> 71 <1> 72 <1> ; PCI equates 73 <1> ; PCI function address (PFA) 74 <1> ; bit 31 = 1 75 <1> ; bit 23:16 = bus number (0-255) 76 <1> ; bit 15:11 = device number (0-31) 77 <1> ; bit 10:8 = function number (0-7) 78 <1> ; bit 7:0 = register number (0-255) 79 <1> 80 <1> IO_ADDR_MASK EQU 0FFFEh ; mask off bit 0 for reading BARs 81 <1> PCI_INDEX_PORT EQU 0CF8h 82 <1> PCI_DATA_PORT EQU 0CFCh 83 <1> PCI32 EQU BIT31 ; bitflag to signal 32bit access 84 <1> PCI16 EQU BIT30 ; bitflag for 16bit access 85 <1> 86 <1> PCI_FN0 EQU 0 << 8 87 <1> PCI_FN1 EQU 1 << 8 88 <1> PCI_FN2 EQU 2 << 8 89 <1> PCI_FN3 EQU 3 << 8 90 <1> PCI_FN4 EQU 4 << 8 91 <1> PCI_FN5 EQU 5 << 8 92 <1> PCI_FN6 EQU 6 << 8 93 <1> PCI_FN7 EQU 7 << 8 94 <1> 95 <1> PCI_CMD_REG EQU 04h ; reg 04, command reg 96 <1> IO_ENA EQU BIT0 ; i/o decode enable 97 <1> MEM_ENA EQU BIT1 ; memory decode enable 98 <1> BM_ENA EQU BIT2 ; bus master enable 99 <1> 100 <1> ; ---------------------------------------------------------------------------- 101 <1> ; CODEC.INC 102 <1> ; ---------------------------------------------------------------------------- 103 <1> 104 <1> ;Codec registers. 105 <1> ; 106 <1> ;Not all codecs are created equal. Refer to the spec for your specific codec. 107 <1> ; 108 <1> ;All registers are 16bits wide. Access to codec registers over the AC97 link 109 <1> ;is defined by the OEM. 110 <1> ; 111 <1> ;Secondary codec's are accessed by ORing in BIT7 of all register accesses. 112 <1> ; 113 <1> 114 <1> ; each codec/mixer register is 16bits 115 <1> 116 <1> CODEC_RESET_REG equ 00 ; reset codec 117 <1> CODEC_MASTER_VOL_REG equ 02 ; master volume 118 <1> CODEC_HP_VOL_REG equ 04 ; headphone volume 119 <1> CODEC_MASTER_MONO_VOL_REG equ 06 ; master mono volume 120 <1> CODEC_MASTER_TONE_REG equ 08 ; master tone (R+L) 121 <1> CODEC_PCBEEP_VOL_REG equ 0ah ; PC beep volume 122 <1> CODEC_PHONE_VOL_REG equ 0bh ; phone volume 123 <1> CODEC_MIC_VOL_REG equ 0eh ; MIC volume 124 <1> CODEC_LINE_IN_VOL_REG equ 10h ; line input volume 125 <1> CODEC_CD_VOL_REG equ 12h ; CD volume 126 <1> CODEC_VID_VOL_REG equ 14h ; video volume 127 <1> CODEC_AUX_VOL_REG equ 16h ; aux volume 128 <1> CODEC_PCM_OUT_REG equ 18h ; PCM output volume 129 <1> CODEC_RECORD_SELECT_REG equ 1ah ; record select input 130 <1> CODEC_RECORD_VOL_REG equ 1ch ; record volume 131 <1> CODEC_RECORD_MIC_VOL_REG equ 1eh ; record mic volume 132 <1> CODEC_GP_REG equ 20h ; general purpose 133 <1> CODEC_3D_CONTROL_REG equ 22h ; 3D control 134 <1> ; 24h is reserved 135 <1> CODEC_POWER_CTRL_REG equ 26h ; powerdown control 136 <1> CODEC_EXT_AUDIO_REG equ 28h ; extended audio 137 <1> CODEC_EXT_AUDIO_CTRL_REG equ 2ah ; extended audio control 138 <1> CODEC_PCM_FRONT_DACRATE_REG equ 2ch ; PCM out sample rate 139 <1> CODEC_PCM_SURND_DACRATE_REG equ 2eh ; surround sound sample rate 140 <1> CODEC_PCM_LFE_DACRATE_REG equ 30h ; LFE sample rate 141 <1> CODEC_LR_ADCRATE_REG equ 32h ; PCM in sample rate 142 <1> CODEC_MIC_ADCRATE_REG equ 34h ; mic in sample rate 143 <1> 144 <1> ; registers 36-7a are reserved on the ICH 145 <1> 146 <1> CODEC_VENDORID1_REG equ 7ch ; codec vendor ID 1 147 <1> CODEC_VENDORID2_REG equ 7eh ; codec vendor ID 2 148 <1> 149 <1> ; Mixer registers 0 through 51h reside in the ICH and are not forwarded over 150 <1> ; the AC97 link to the codec, which I think is a little weird. Looks like 151 <1> ; the ICH makes it so you don't need a fully functional codec to play audio? 152 <1> ; 153 <1> ; whenever 2 codecs are present in the system, use BIT7 to access the 2nd 154 <1> ; set of registers, ie 80h-feh 155 <1> 156 <1> PRIMARY_CODEC equ 0 ; 0-7F for primary codec 157 <1> SECONDARY_CODEC equ BIT7 ; 80-8f registers for 2ndary 158 <1> 159 <1> SAMPLE_RATE_441khz equ 44100 ; 44.1Khz (cd quality) rate 160 <1> 161 <1> ; ---------------------------------------------------------------------------- 162 <1> ; 17/02/2017 163 <1> PCI_IO_BASE equ 10h ; = NAMBAR register offset 164 <1> AC97_INT_LINE equ 3Ch ; AC97 Interrupt Line register offset 165 <1> 166 <1> ; ---------------------------------------------------------------------------- 167 <1> ; ICH2AC97.INC 168 <1> ; ---------------------------------------------------------------------------- 169 <1> 170 <1> ; PCI stuff 171 <1> 172 <1> ; Intel ICH2 equates. It is assumed that ICH0 and plain ole ICH are compatible. 173 <1> 174 <1> INTEL_VID equ 8086h ; Intel's PCI vendor ID 175 <1> ICH_DID equ 2415h ; ICH device ID 176 <1> ICH0_DID equ 2425h ; ICH0 177 <1> ICH2_DID equ 2445h ; ICH2 I think there are more ICHes. 178 <1> ; they all should be compatible. 179 <1> 180 <1> ; 17/02/2017 (Erdogan Tan, ref: ALSA Device IDs, ALSA project) 181 <1> ICH3_DID equ 2485h ; ICH3 182 <1> ICH4_DID equ 24C5h ; ICH4 183 <1> ICH5_DID equ 24D5h ; ICH5 184 <1> ICH6_DID equ 266Eh ; ICH6 185 <1> ESB6300_DID equ 25A6h ; 6300ESB 186 <1> ESB631X_DID equ 2698h ; 631XESB 187 <1> ICH7_DID equ 27DEh ; ICH7 188 <1> ; 189 <1> 190 <1> NAMBAR_REG equ 10h ; native audio mixer BAR 191 <1> NAM_SIZE equ 256 ; 256 bytes required. 192 <1> 193 <1> NABMBAR_REG equ 14h ; native audio bus mastering BAR 194 <1> NABM_SIZE equ 64 ; 64 bytes 195 <1> 196 <1> ; BUS master registers, accessed via NABMBAR+offset 197 <1> 198 <1> ; ICH supports 3 different types of register sets for three types of things 199 <1> ; it can do, thus: 200 <1> ; 201 <1> ; PCM in (for recording) aka PI 202 <1> ; PCM out (for playback) aka PO 203 <1> ; MIC in (for recording) aka MC 204 <1> 205 <1> PI_BDBAR_REG equ 0 ; PCM in buffer descriptor BAR 206 <1> PO_BDBAR_REG equ 10h ; PCM out buffer descriptor BAR 207 <1> MC_BDBAR_REG equ 20h ; MIC in buffer descriptor BAR 208 <1> 209 <1> ; each buffer descriptor BAR holds a pointer which has entries to the buffer 210 <1> ; contents of the .WAV file we're going to play. Each entry is 8 bytes long 211 <1> ; (more on that later) and can contain 32 entries total, so each BAR is 212 <1> ; 256 bytes in length, thus: 213 <1> 214 <1> BDL_SIZE equ 32*8 ; Buffer Descriptor List size 215 <1> INDEX_MASK equ 31 ; indexes must be 0-31 216 <1> 217 <1> 218 <1> 219 <1> PI_CIV_REG equ 4 ; PCM in current Index value (RO) 220 <1> PO_CIV_REG equ 14h ; PCM out current Index value (RO) 221 <1> MC_CIV_REG equ 24h ; MIC in current Index value (RO) 222 <1> ;8bit read only 223 <1> ; each current index value is simply a pointer showing us which buffer 224 <1> ; (0-31) the codec is currently processing. Once this counter hits 31, it 225 <1> ; wraps back to 0. 226 <1> ; this can be handy to know, as once it hits 31, we're almost out of data to 227 <1> ; play back or room to record! 228 <1> 229 <1> 230 <1> PI_LVI_REG equ 5 ; PCM in Last Valid Index 231 <1> PO_LVI_REG equ 15h ; PCM out Last Valid Index 232 <1> MC_LVI_REG equ 25h ; MIC in Last Valid Index 233 <1> ;8bit read/write 234 <1> ; The Last Valid Index is a number (0-31) to let the codec know what buffer 235 <1> ; number to stop on after processing. It could be very nasty to play audio 236 <1> ; from buffers that aren't filled with the audio we want to play. 237 <1> 238 <1> 239 <1> PI_SR_REG equ 6 ; PCM in Status register 240 <1> PO_SR_REG equ 16h ; PCM out Status register 241 <1> MC_SR_REG equ 26h ; MIC in Status register 242 <1> ;16bit read/write 243 <1> ; status registers. Bitfields follow: 244 <1> 245 <1> FIFO_ERR equ BIT4 ; FIFO Over/Underrun W1TC. 246 <1> 247 <1> BCIS equ BIT3 ; buffer completion interrupt status. 248 <1> ; Set whenever the last sample in ANY 249 <1> ; buffer is finished. Bit is only 250 <1> ; set when the Interrupt on Complete 251 <1> ; (BIT4 of control reg) is set. 252 <1> 253 <1> LVBCI equ BIT2 ; Set whenever the codec has processed 254 <1> ; the last buffer in the buffer list. 255 <1> ; Will fire an interrupt if IOC bit is 256 <1> ; set. Probably set after the last 257 <1> ; sample in the last buffer is 258 <1> ; processed. W1TC 259 <1> 260 <1> ; 261 <1> CELV equ BIT1 ; Current buffer == last valid. 262 <1> ; Bit is RO and remains set until LVI is 263 <1> ; cleared. Probably set up the start 264 <1> ; of processing for the last buffer. 265 <1> 266 <1> 267 <1> DCH equ BIT0 ; DMA controller halted. 268 <1> ; set whenever audio stream is stopped 269 <1> ; or something else goes wrong. 270 <1> 271 <1> 272 <1> PI_PICB_REG equ 8 ; PCM in position in current buffer(RO) 273 <1> PO_PICB_REG equ 18h ; PCM out position in current buffer(RO) 274 <1> MC_PICB_REG equ 28h ; MIC in position in current buffer (RO) 275 <1> ;16bit read only 276 <1> ; position in current buffer regs show the number of dwords left to be 277 <1> ; processed in the current buffer. 278 <1> ; 279 <1> 280 <1> PI_PIV_REG equ 0ah ; PCM in Prefected index value 281 <1> PO_PIV_REG equ 1ah ; PCM out Prefected index value 282 <1> MC_PIV_REG equ 2ah ; MIC in Prefected index value 283 <1> ;8bit, read only 284 <1> ; Prefetched index value register. 285 <1> ; tells which buffer number (0-31) has be prefetched. I'd imagine this 286 <1> ; value follows the current index value fairly closely. (CIV+1) 287 <1> ; 288 <1> 289 <1> 290 <1> PI_CR_REG equ 0bh ; PCM in Control Register 291 <1> PO_CR_REG equ 1bh ; PCM out Control Register 292 <1> MC_CR_REG equ 2bh ; MIC in Control Register 293 <1> ; 8bit 294 <1> ; Control register *MUST* only be accessed as an 8bit value. 295 <1> ; Control register. See bitfields below. 296 <1> ; 297 <1> 298 <1> 299 <1> IOCE equ BIT4 ; interrupt on complete enable. 300 <1> ; set this bit if you want an intrtpt 301 <1> ; to fire whenever LVBCI is set. 302 <1> FEIFE equ BIT3 ; set if you want an interrupt to fire 303 <1> ; whenever there is a FIFO (over or 304 <1> ; under) error. 305 <1> LVBIE equ BIT2 ; last valid buffer interrupt enable. 306 <1> ; set if you want an interrupt to fire 307 <1> ; whenever the completion of the last 308 <1> ; valid buffer. 309 <1> RR equ BIT1 ; reset registers. Nukes all regs 310 <1> ; except bits 4:2 of this register. 311 <1> ; Only set this bit if BIT 0 is 0 312 <1> RPBM equ BIT0 ; Run/Pause 313 <1> ; set this bit to start the codec! 314 <1> 315 <1> 316 <1> GLOB_CNT_REG equ 2ch ; Global control register 317 <1> SEC_RES_EN equ BIT5 ; secondary codec resume event 318 <1> ; interrupt enable. Not used here. 319 <1> PRI_RES_EN equ BIT4 ; ditto for primary. Not used here. 320 <1> ACLINK_OFF equ BIT3 ; Turn off the AC97 link 321 <1> ACWARM_RESET equ BIT2 ; Awaken the AC97 link from sleep. 322 <1> ; registers preserved, bit self clears 323 <1> ACCOLD_RESET equ BIT1 ; Reset everything in the AC97 and 324 <1> ; reset all registers. Not self clearing 325 <1> 326 <1> GPIIE equ BIT0 ; GPI Interrupt enable. 327 <1> ; set if you want an interrupt to 328 <1> ; fire upon ANY of the bits in the 329 <1> ; GPI (general pursose inputs?) not used. 330 <1> 331 <1> GLOB_STS_REG equ 30h ; Global Status register (RO) 332 <1> 333 <1> MD3 equ BIT17 ; modem powerdown status (yawn) 334 <1> AD3 equ BIT16 ; Audio powerdown status (yawn) 335 <1> RD_COMPLETE_STS equ BIT15 ; Codec read timed out. 0=normal 336 <1> BIT3SLOT12 equ BIT14 ; shadowed status of bit 3 in slot 12 337 <1> BIT2SLOT12 equ BIT13 ; shadowed status of bit 2 in slot 12 338 <1> BIT1SLOT12 equ BIT12 ; shadowed status of bit 1 in slot 12 339 <1> SEC_RESUME_STS equ BIT11 ; secondary codec has resumed (and irqed) 340 <1> PRI_RESUME_STS equ BIT10 ; primary codec has resumed (and irqed) 341 <1> SEC_CODEC_RDY equ BIT9 ; secondary codec is ready for action 342 <1> PRI_CODEC_RDY equ BIT8 ; Primary codec is ready for action 343 <1> ; software must check these bits before 344 <1> ; starting the codec! 345 <1> MIC_IN_IRQ equ BIT7 ; MIC in caused an interrupt 346 <1> PCM_OUT_IRQ equ BIT6 ; One of the PCM out channels IRQed 347 <1> PCM_IN_IRQ equ BIT5 ; One of the PCM in channels IRQed 348 <1> MODEM_OUT_IRQ equ BIT2 ; modem out channel IRQed 349 <1> MODEM_IN_IRQ equ BIT1 ; modem in channel IRQed 350 <1> GPI_STS_CHANGE equ BIT0 ; set whenever GPI's have changed. 351 <1> ; BIT0 of slot 12 also reflects this. 352 <1> 353 <1> 354 <1> ACC_SEMA_REG equ 34h ; Codec write semiphore register 355 <1> CODEC_BUSY equ BIT0 ; codec register I/O is happening 356 <1> ; self clearing 357 <1> ; 358 <1> ; Buffer Descriptors List 359 <1> ; As stated earlier, each buffer descriptor list is a set of (up to) 32 360 <1> ; descriptors, each 8 bytes in length. Bytes 0-3 of a descriptor entry point 361 <1> ; to a chunk of memory to either play from or record to. Bytes 4-7 of an 362 <1> ; entry describe various control things detailed below. 363 <1> ; 364 <1> ; Buffer pointers must always be aligned on a Dword boundry. 365 <1> ; 366 <1> ; 367 <1> 368 <1> IOC equ BIT31 ; Fire an interrupt whenever this 369 <1> ; buffer is complete. 370 <1> 371 <1> BUP equ BIT30 ; Buffer Underrun Policy. 372 <1> ; if this buffer is the last buffer 373 <1> ; in a playback, fill the remaining 374 <1> ; samples with 0 (silence) or not. 375 <1> ; It's a good idea to set this to 1 376 <1> ; for the last buffer in playback, 377 <1> ; otherwise you're likely to get a lot 378 <1> ; of noise at the end of the sound. 379 <1> 380 <1> ; 381 <1> ; Bits 15:0 contain the length of the buffer, in number of samples, which 382 <1> ; are 16 bits each, coupled in left and right pairs, or 32bits each. 383 <1> ; Luckily for us, that's the same format as .wav files. 384 <1> ; 385 <1> ; A value of FFFF is 65536 samples. Running at 44.1Khz, that's just about 386 <1> ; 1.5 seconds of sample time. FFFF * 32bits is 1FFFFh bytes or 128k of data. 387 <1> ; 388 <1> ; A value of 0 in these bits means play no samples. 389 <1> ; 21 22 _STARTUP: 23 24 ; memory allocation 25 26 00000000 E87501 call setFree ; deallocate unused DOS mem 27 28 ; 17/02/2017 29 ; Clear BSS (uninitialized data) area 30 00000003 31C0 xor ax, ax ; 0 31 00000005 B92440 mov cx, (EOF - bss_start)/2 32 00000008 BF[F808] mov di, bss_start 33 0000000B F3AB rep stosw 34 35 ; allocate 256 bytes of data for DCM_OUT Buffer Descriptor List. (BDL) 36 37 0000000D B81000 mov ax, BDL_SIZE / 16 38 00000010 E86D01 call memAlloc 39 00000013 A3[1E09] mov [BDL_BUFFER], ax ; segment 40 41 ; allocate 2 buffers, 64k each for now. 42 43 00000016 B80010 mov ax, BUFFERSIZE / 16 ; 64k for .WAV file 44 00000019 E86401 call memAlloc 45 0000001C A3[2009] mov [WAV_BUFFER1], ax ; segment 46 47 0000001F B80010 mov ax, BUFFERSIZE / 16 48 00000022 E85B01 call memAlloc 49 00000025 A3[2209] mov [WAV_BUFFER2], ax 50 51 ; Detect/reset AC97 52 ; 53 00000028 E8C802 call pciFindDevice 54 0000002B 7342 jnc short _1 55 56 ; couldn't find the audio device! 57 58 0000002D 0E push cs 59 0000002E 1F pop ds 60 0000002F BA[3900] mov dx, noDevMsg 61 00000032 B409 mov ah, 9 62 00000034 CD21 int 21h 63 00000036 E93801 jmp exit 64 65 ; 17/02/2017 66 00000039 4572726F723A20556E- noDevMsg db "Error: Unable to find intel ICH based audio device!",CR,LF,"$" 66 00000042 61626C6520746F2066- 66 0000004B 696E6420696E74656C- 66 00000054 204943482062617365- 66 0000005D 6420617564696F2064- 66 00000066 6576696365210D0A24 67 68 _1: 69 ; eax = BUS/DEV/FN 70 ; 00000000BBBBBBBBDDDDDFFF00000000 71 ; edx = DEV/VENDOR 72 ; DDDDDDDDDDDDDDDDVVVVVVVVVVVVVVVV 73 74 0000006F 66A3[2609] mov [bus_dev_fn], eax 75 00000073 668916[2A09] mov [dev_vendor], edx 76 77 ; get ICH base address regs for mixer and bus master 78 79 00000078 B010 mov al, NAMBAR_REG 80 0000007A E8E801 call pciRegRead16 ; read PCI registers 10-11 81 0000007D 83E2FE and dx, IO_ADDR_MASK ; mask off BIT0 82 83 00000080 8916[1A09] mov [NAMBAR], dx ; save audio mixer base addy 84 85 00000084 B014 mov al, NABMBAR_REG 86 00000086 E8DC01 call pciRegRead16 87 00000089 83E2FE and dx, IO_ADDR_MASK 88 89 0000008C 8916[1C09] mov [NABMBAR], dx ; save bus master base addy 90 91 ; init controller 92 ; 17/02/2017 93 00000090 B004 mov al, PCI_CMD_REG ; command register (04h) 94 00000092 E8D001 call pciRegRead16 ; pciRegRead8 95 96 ; eax = BUS/DEV/FN/REG 97 ; dx = PCI Command Register Content ; 17/02/2017 98 ; 00000000CCCCCCCC 99 00000095 8916[2E09] mov [stats_cmd], dx 100 101 00000099 B010 mov al, PCI_IO_BASE ; IO base address register (10h) 102 0000009B E8D501 call pciRegRead32 103 104 0000009E 83E2C0 and dx, 0FFC0h ; IO_ADDR_MASK (0FFFE) ? 105 000000A1 8916[3009] mov [ac97_io_base], dx 106 107 000000A5 B03C mov al, AC97_INT_LINE ; Interrupt line register (3Ch) 108 000000A7 E8B301 call pciRegRead8 ; 17/02/2017 109 110 000000AA 8816[2509] mov [ac97_int_ln_reg], dl 111 112 ; 28/11/2016 113 000000AE BB0100 mov bx, 1 114 000000B1 30F6 xor dh, dh ; 17/02/2017 115 000000B3 89D1 mov cx, dx 116 000000B5 D3E3 shl bx, cl 117 118 ;not bx 119 000000B7 E4A1 in al, 0A1h ; irq 8-15 120 000000B9 88C4 mov ah, al 121 000000BB E421 in al, 21h ; irq 0-7 122 ;and ax, bx ; unmask 123 000000BD 0FB3D0 btr ax, dx ; unmask 124 000000C0 E621 out 21h, al ; enable interrupt (if irq <= 7) 125 000000C2 88E0 mov al, ah 126 000000C4 E6A1 out 0A1h, al ; enable interrupt (if irq > 7) 127 ;not bx 128 129 000000C6 BAD104 mov dx, 4D1h ;8259 ELCR1 130 000000C9 EC in al, dx 131 000000CA 88C4 mov ah, al 132 000000CC BAD004 mov dx, 4D0h 133 000000CF EC in al, dx 134 ;or ax, bx 135 000000D0 0FABC8 bts ax, cx 136 000000D3 BAD004 mov dx, 4D0h 137 000000D6 EE out dx, al ;set level-triggered mode 138 000000D7 88E0 mov al, ah 139 000000D9 BAD104 mov dx, 4D1h 140 000000DC EE out dx, al ;set level-triggered mode 141 142 ; 24/11/2016 - Erdogan Tan 143 000000DD 89CB mov bx, cx 144 ;mov bx, dx 145 000000DF 8A9F[DE07] mov bl, [bx+irq_int] 146 000000E3 C1E302 shl bx, 2 ; * 4 147 148 ; set up interrupt vector 149 ; 30/11/2016 150 000000E6 06 push es 151 000000E7 31C0 xor ax, ax 152 000000E9 8EC0 mov es, ax 153 000000EB 26C707[3607] mov word [es:bx], ac97_int_handler 154 000000F0 8CC8 mov ax, cs 155 000000F2 26894702 mov [es:bx+2], ax 156 000000F6 07 pop es 157 158 000000F7 E8CC04 call write_ac97_dev_info 159 160 ; check the command line for a file to play 161 162 ;push ds 163 000000FA E88C00 call processCmdline ; get the filename 164 165 ; open the file 166 000000FD B002 mov al, OPEN ; open existing file 167 000000FF E8A700 call openFile ; no error? ok. 168 ;pop ds 169 00000102 7322 jnc short _gsr 170 171 ; file not found! 172 173 ;push cs 174 ;pop ds 175 00000104 BA[0D01] mov dx, noFileErrMsg 176 00000107 B409 mov ah, 9 177 00000109 CD21 int 21h 178 0000010B EB64 jmp exit 179 180 0000010D 4572726F723A206669- noFileErrMsg db "Error: file not found.",CR,LF,"$" 180 00000116 6C65206E6F7420666F- 180 0000011F 756E642E0D0A24 181 182 _gsr: 183 00000126 E8A700 call getSampleRate ; read the sample rate 184 ; pass it onto codec. 185 00000129 7246 jc short exit ; 19/11/2016 - nothing to do 186 187 0000012B A3[3209] mov [sample_rate], ax 188 ; 19/11/2016 189 0000012E 880E[3409] mov [stmo], cl 190 00000132 8816[3609] mov [bps], dl 191 192 ; 17/02/2017 193 00000136 C606[3809]00 mov byte [fbs_shift], 0 ; 0 = stereo and 16 bit 194 0000013B FEC9 dec cl 195 0000013D 7504 jnz short _gsr_1 ; stereo 196 0000013F FE06[3809] inc byte [fbs_shift] ; 1 = mono or 8 bit 197 _gsr_1: 198 00000143 80FA08 cmp dl, 8 199 00000146 7704 ja short _gsr_2 ; 16 bit samples 200 00000148 FE06[3809] inc byte [fbs_shift] ; 2 = mono and 8 bit 201 _gsr_2: 202 0000014C E89605 call write_sample_rate 203 204 ; 17/02/2017 205 0000014F 8B16[2E09] mov dx, [stats_cmd] 206 00000153 80CA05 or dl, IO_ENA+BM_ENA ; enable IO and bus master 207 00000156 E87E01 call pciRegWrite16 ; pciRegWrite8 208 209 ; setup the Codec (actually mixer registers) 210 00000159 E8D801 call codecConfig ; unmute codec, set rates. 211 212 ; 213 ; position file pointer to start in actual wav data 214 ; MUCH improvement should really be done here to check if sample size is 215 ; supported, make sure there are 2 channels, etc. 216 ; 217 0000015C B442 mov ah, 42h 218 0000015E B000 mov al, 0 ; from start of file 219 00000160 8B1E[1409] mov bx, [filehandle] 220 00000164 31C9 xor cx, cx 221 00000166 BA2C00 mov dx, 44 ; jump past .wav/riff header 222 00000169 CD21 int 21h 223 224 ; play the .wav file. Most of the good stuff is in here. 225 226 0000016B E84D02 call playWav 227 228 ; close the .wav file and exit. 229 230 0000016E E84A00 call closeFile 231 232 exit: 233 00000171 B8004C mov ax, 4c00h 234 00000174 CD21 int 21h 235 236 here: 237 00000176 EBFE jmp short here 238 239 ; MEMALLOC.ASM 240 ;-- SETFREE: Release memory not used ---------------- 241 ;-- Input : ES = address of PSP 242 ;-- Output : none 243 ;-- Register : AX, BX, CL and FLAGS are changed 244 ;-- Info : Since the stack-segment is always the last segment in an 245 ; EXE-file, ES:0000 points to the beginning and SS:SP 246 ; to the end of the program in memory. Through this the 247 ; length of the program can be calculated 248 ; call this routine once at the beginning of the program to free up memory 249 ; assigned to it by DOS. 250 251 setFree: 252 00000178 BB0010 mov bx, 65536/16 ; 4K paragraphs ; 17/02/2017 (Erdogan Tan) 253 254 0000017B B44A mov ah, 4ah ;pass new length to DOS 255 0000017D CD21 int 21h 256 257 0000017F C3 retn ; back to caller 258 ; new size (allocated memory) = 64KB 259 260 memAlloc: 261 ; input: AX = # of paragraphs required 262 ; output: AX = segment of block to use 263 264 00000180 53 push bx 265 00000181 89C3 mov bx, ax 266 00000183 B448 mov ah, 48h 267 00000185 CD21 int 21h 268 00000187 5B pop bx 269 00000188 C3 retn 270 271 ; CMDLINE.ASM 272 ; parse the command line 273 ; entry: none 274 ; exit: DS:DX to the 1st supplied item on the command line 275 276 processCmdline: 277 00000189 53 push bx 278 0000018A 56 push si 279 280 ;mov ah, 51h 281 ;int 21h 282 ;mov ds, bx 283 284 0000018B BE8000 mov si, 80h 285 0000018E 0FB61C movzx bx, byte [si] 286 00000191 01DE add si, bx 287 00000193 46 inc si 288 289 00000194 C60400 mov byte [si], NULL ; zero terminate 290 291 00000197 BE8100 mov si, 81h 292 293 cmdlineloop: 294 0000019A AC lodsb 295 296 0000019B 3C00 cmp al, NULL ; found end of line? 297 0000019D 7404 je short exitpc 298 0000019F 3C20 cmp al, ' ' ; found a space? 299 000001A1 74F7 je short cmdlineloop 300 301 ; must be the filename here. 302 exitpc: 303 000001A3 4E dec si ; point to start of filename 304 000001A4 89F2 mov dx, si 305 000001A6 5E pop si 306 000001A7 5B pop bx 307 000001A8 C3 retn 308 309 ; FILE.ASM 310 ;open or create file 311 ; 312 ;input: ds:dx-->filename (asciiz) 313 ; al=file Mode (create or open) 314 ;output: none cs:[filehandle] filled 315 ; 316 openFile: 317 000001A9 50 push ax 318 000001AA 51 push cx 319 000001AB B43B mov ah, 3bh ; start with a mode 320 000001AD 00C4 add ah, al ; add in create or open mode 321 000001AF 31C9 xor cx, cx 322 000001B1 CD21 int 21h 323 000001B3 7203 jc short _of1 324 ;mov [cs:filehandle], ax 325 000001B5 A3[1409] mov [filehandle], ax 326 _of1: 327 000001B8 59 pop cx 328 000001B9 58 pop ax 329 000001BA C3 retn 330 331 ; close the currently open file 332 ; input: none, uses cs:[filehandle] 333 closeFile: 334 000001BB 50 push ax 335 000001BC 53 push bx 336 000001BD 833E[1409]FF cmp word [filehandle], -1 337 000001C2 7409 jz short _cf1 338 000001C4 8B1E[1409] mov bx, [filehandle] 339 000001C8 B8003E mov ax,3e00h 340 000001CB CD21 int 21h ;close file 341 _cf1: 342 000001CD 5B pop bx 343 000001CE 58 pop ax 344 000001CF C3 retn 345 346 getSampleRate: 347 ; 08/12/2016 348 ; reads the sample rate from the .wav file. 349 ; entry: none - assumes file is already open 350 ; 19/11/2016 - Erdogan Tan 351 ; exit: ax = sample rate (11025, 22050, 44100, 48000) 352 ; cx = number of channels (mono=1, stereo=2) 353 ; dx = bits per sample (8, 16) 354 355 000001D0 53 push bx 356 357 000001D1 B442 mov ah, 42h 358 000001D3 B000 mov al, 0 ; from start of file 359 000001D5 8B1E[1409] mov bx, [filehandle] 360 000001D9 31C9 xor cx, cx 361 000001DB BA0800 mov dx, 08h ; "WAVE" 362 000001DE CD21 int 21h 363 364 000001E0 BA[F808] mov dx, smpRBuff 365 000001E3 B91C00 mov cx, 28 ; 28 bytes 366 000001E6 B43F mov ah, 3fh 367 000001E8 CD21 int 21h 368 369 000001EA 813E[F808]5741 cmp word [smpRBuff], 'WA' 370 000001F0 751C jne short gsr_stc 371 372 000001F2 813E[FA08]5645 cmp word [smpRBuff+2], 'VE' 373 000001F8 7514 jne short gsr_stc 374 375 000001FA 833E[0409]01 cmp word [smpRBuff+12], 1 ; Offset 20, must be 1 (= PCM) 376 000001FF 750D jne short gsr_stc 377 378 379 00000201 8B0E[0609] mov cx, [smpRBuff+14] ; return num of channels in CX 380 00000205 A1[0809] mov ax, [smpRBuff+16] ; return sample rate in AX 381 00000208 8B16[1209] mov dx, [smpRBuff+26] ; return bits per sample value in DX 382 gsr_retn: 383 0000020C 5B pop bx 384 0000020D C3 retn 385 386 gsr_stc: 387 0000020E F9 stc 388 0000020F EBFB jmp short gsr_retn 389 390 %include 'ac97.asm' ; 29/11/2016 (AC97 codec configuration) 1 <1> ; PCI and AC97 codec functions for wav player 2 <1> ; Erdogan Tan (17/02/2017) 3 <1> 4 <1> ; ---------------------------------------------------------------------------- 5 <1> ; PCI.ASM 6 <1> ; ---------------------------------------------------------------------------- 7 <1> 8 <1> ; PCI device register reader/writers. 9 <1> ; NASM version: Erdogan Tan (29/11/2016) 10 <1> ; Last Update: 17/02/2017 11 <1> 12 <1> ;=============================================================== 13 <1> ; 8/16/32bit PCI reader 14 <1> ; 15 <1> ; Entry: EAX=PCI Bus/Device/fn/register number 16 <1> ; BIT30 set if 32 bit access requested 17 <1> ; BIT29 set if 16 bit access requested 18 <1> ; otherwise defaults to 8bit read 19 <1> ; 20 <1> ; Exit: DL,DX,EDX register data depending on requested read size 21 <1> ; 22 <1> ; Note: this routine is meant to be called via pciRegRead8, pciRegread16, 23 <1> ; or pciRegRead32, listed below. 24 <1> ; 25 <1> ; Note2: don't attempt to read 32bits of data from a non dword aligned reg 26 <1> ; number. Likewise, don't do 16bit reads from non word aligned reg # 27 <1> ; 28 <1> pciRegRead: 29 00000211 6653 <1> push ebx 30 00000213 51 <1> push cx 31 00000214 6689C3 <1> mov ebx, eax ; save eax, dh 32 00000217 88F1 <1> mov cl, dh 33 00000219 6625FFFFFFBF <1> and eax, (~PCI32)+PCI16 ; clear out data size request 34 0000021F 660D00000080 <1> or eax, BIT31 ; make a PCI access request 35 00000225 24FC <1> and al, ~3 ; NOT 3 ; force index to be dword 36 <1> 37 00000227 BAF80C <1> mov dx, PCI_INDEX_PORT 38 0000022A 66EF <1> out dx, eax ; write PCI selector 39 <1> 40 0000022C BAFC0C <1> mov dx, PCI_DATA_PORT 41 0000022F 88D8 <1> mov al, bl 42 00000231 2403 <1> and al, 3 ; figure out which port to 43 00000233 00C2 <1> add dl, al ; read to 44 <1> 45 00000235 66ED <1> in eax, dx ; do 32bit read 46 00000237 66F7C300000080 <1> test ebx, PCI32 47 0000023E 7403 <1> jz short _pregr1 48 <1> 49 00000240 6689C2 <1> mov edx, eax ; return 32bits of data 50 <1> _pregr1: 51 00000243 89C2 <1> mov dx, ax ; return 16bits of data 52 00000245 66F7C3000000C0 <1> test ebx, PCI32+PCI16 53 0000024C 7502 <1> jnz short _pregr2 54 0000024E 88CE <1> mov dh, cl ; restore dh for 8 bit read 55 <1> _pregr2: 56 00000250 6689D8 <1> mov eax, ebx ; restore eax 57 00000253 6625FFFFFFBF <1> and eax, (~PCI32)+PCI16 ; clear out data size request 58 00000259 59 <1> pop cx 59 0000025A 665B <1> pop ebx 60 0000025C C3 <1> retn 61 <1> 62 <1> pciRegRead8: 63 0000025D 6625FFFFFF3F <1> and eax, (~PCI16)+PCI32 ; set up 8 bit read size 64 00000263 EBAC <1> jmp short pciRegRead ; call generic PCI access 65 <1> 66 <1> pciRegRead16: 67 00000265 6625FFFFFF3F <1> and eax, (~PCI16)+PCI32 ; set up 16 bit read size 68 0000026B 660D00000040 <1> or eax, PCI16 ; call generic PCI access 69 00000271 EB9E <1> jmp short pciRegRead 70 <1> 71 <1> pciRegRead32: 72 00000273 6625FFFFFF3F <1> and eax, (~PCI16)+PCI32 ; set up 32 bit read size 73 00000279 660D00000080 <1> or eax, PCI32 ; call generic PCI access 74 0000027F EB90 <1> jmp short pciRegRead 75 <1> 76 <1> ;=============================================================== 77 <1> ; 8/16/32bit PCI writer 78 <1> ; 79 <1> ; Entry: EAX=PCI Bus/Device/fn/register number 80 <1> ; BIT31 set if 32 bit access requested 81 <1> ; BIT30 set if 16 bit access requested 82 <1> ; otherwise defaults to 8bit read 83 <1> ; DL/DX/EDX data to write depending on size 84 <1> ; 85 <1> ; 86 <1> ; note: this routine is meant to be called via pciRegWrite8, pciRegWrite16, 87 <1> ; or pciRegWrite32 as detailed below. 88 <1> ; 89 <1> ; Note2: don't attempt to write 32bits of data from a non dword aligned reg 90 <1> ; number. Likewise, don't do 16bit writes from non word aligned reg # 91 <1> ; 92 <1> pciRegWrite: 93 00000281 6653 <1> push ebx 94 00000283 51 <1> push cx 95 00000284 6689C3 <1> mov ebx, eax ; save eax, dx 96 00000287 89D1 <1> mov cx, dx 97 00000289 660D00000080 <1> or eax, BIT31 ; make a PCI access request 98 0000028F 6625FFFFFFBF <1> and eax, ~PCI16 ; NOT PCI16 ; clear out data size request 99 00000295 24FC <1> and al, ~3 ; NOT 3 ; force index to be dword 100 <1> 101 00000297 BAF80C <1> mov dx, PCI_INDEX_PORT 102 0000029A 66EF <1> out dx, eax ; write PCI selector 103 <1> 104 0000029C BAFC0C <1> mov dx, PCI_DATA_PORT 105 0000029F 88D8 <1> mov al, bl 106 000002A1 2403 <1> and al, 3 ; figure out which port to 107 000002A3 00C2 <1> add dl, al ; write to 108 <1> 109 000002A5 6689D0 <1> mov eax, edx ; put data into eax 110 000002A8 89C8 <1> mov ax, cx 111 <1> 112 000002AA EE <1> out dx, al 113 000002AB 66F7C3000000C0 <1> test ebx, PCI16+PCI32 ; only 8bit access? bail 114 000002B2 740C <1> jz short _pregw1 115 <1> 116 000002B4 EF <1> out dx, ax ; write 16 bit value 117 000002B5 66F7C300000040 <1> test ebx, PCI16 ; 16bit requested? bail 118 000002BC 7502 <1> jnz short _pregw1 119 <1> 120 000002BE 66EF <1> out dx, eax ; write full 32bit 121 <1> _pregw1: 122 000002C0 6689D8 <1> mov eax, ebx ; restore eax 123 000002C3 6625FFFFFFBF <1> and eax, (~PCI32)+PCI16 ; clear out data size request 124 000002C9 89CA <1> mov dx, cx ; restore dx 125 000002CB 59 <1> pop cx 126 000002CC 665B <1> pop ebx 127 000002CE C3 <1> ret 128 <1> 129 <1> pciRegWrite8: 130 000002CF 6625FFFFFF3F <1> and eax, (~PCI16)+PCI32 ; set up 8 bit write size 131 000002D5 EBAA <1> jmp short pciRegWrite ; call generic PCI access 132 <1> 133 <1> pciRegWrite16: 134 000002D7 6625FFFFFF3F <1> and eax, (~PCI16)+PCI32 ; set up 16 bit write size 135 000002DD 660D00000040 <1> or eax, PCI16 ; call generic PCI access 136 000002E3 EB9C <1> jmp short pciRegWrite 137 <1> 138 <1> pciRegWrite32: 139 000002E5 6625FFFFFF3F <1> and eax, (~PCI16)+PCI32 ; set up 32 bit write size 140 000002EB 660D00000080 <1> or eax, PCI32 ; call generic PCI access 141 000002F1 EB8E <1> jmp short pciRegWrite 142 <1> 143 <1> ; 17/02/2017 (Modifed by Erdogan Tan for various ICH device IDs) 144 <1> ;=============================================================== 145 <1> ; PCIFindDevice: scan through PCI space looking for a device+vendor ID 146 <1> ; 147 <1> ; ENTRY: none 148 <1> ;; Entry: EAX=Device+Vendor ID 149 <1> ; 150 <1> ; Exit: EAX=PCI address if device found 151 <1> ; EDX=Device+Vendor ID 152 <1> ; CY clear if found, set if not found. EAX invalid if CY set. 153 <1> ; 154 <1> ; [old stackless] Destroys: ebx, esi, edi, cl 155 <1> ; 156 <1> pciFindDevice: 157 <1> ;push cx 158 <1> ;push eax ; * 159 <1> ;push esi 160 <1> ;push edi 161 <1> 162 <1> ;mov esi, eax ; save off vend+device ID 163 <1> 164 <1> ; 17/02/2017 165 000002F3 BE[EE07] <1> mov si, valid_ids ; address of Valid ICH (AC97) Device IDs 166 000002F6 B92800 <1> mov cx, valid_id_count 167 <1> pfd_0: 168 000002F9 66BF00FFFF7F <1> mov edi, (80000000h - 100h) ; start with bus 0, dev 0 func 0 169 <1> nextPCIdevice: 170 000002FF 6681C700010000 <1> add edi, 100h 171 00000306 6681FF00F8FF80 <1> cmp edi, 80FFF800h ; scanned all devices? 172 <1> ;stc 173 <1> ;je short PCIScanExit ; not found 174 0000030D 720D <1> jb short pfd_1 175 0000030F 66BF00000080 <1> mov edi, 80000000h 176 00000315 83C604 <1> add si, 4 ; scan for next device ID 177 00000318 E202 <1> loop pfd_1 178 0000031A F9 <1> stc 179 <1> ;jmp short PCIScanExit 180 0000031B C3 <1> retn 181 <1> pfd_1: 182 0000031C 6689F8 <1> mov eax, edi ; read PCI registers 183 0000031F E851FF <1> call pciRegRead32 184 <1> ;cmp edx, esi ; found device? 185 00000322 663B14 <1> cmp edx, dword [si] 186 00000325 75D8 <1> jne short nextPCIdevice 187 <1> ;clc 188 <1> PCIScanExit: 189 <1> ;pushf 190 00000327 66B800000080 <1> mov eax, BIT31 191 0000032D 66F7D0 <1> not eax 192 00000330 6621F8 <1> and eax, edi ; return only bus/dev/fn # 193 <1> ;popf 194 <1> 195 <1> ;pop edi 196 <1> ;pop esi 197 <1> ;pop edx ; * 198 <1> ;pop cx 199 00000333 C3 <1> retn 200 <1> 201 <1> ; ---------------------------------------------------------------------------- 202 <1> ; CODEC.ASM 203 <1> ; ---------------------------------------------------------------------------- 204 <1> 205 <1> ; codec configuration code. Not much here really. 206 <1> ; NASM version: Erdogan Tan (29/11/2016) 207 <1> 208 <1> ; enable codec, unmute stuff, set output rate to 44.1 209 <1> ; entry: ax = desired sample rate 210 <1> ; 211 <1> 212 <1> codecConfig: 213 <1> ; 17/02/2017 214 <1> ; 07/11/2016 (Erdogan Tan) 215 <1> PORT_NABM_GLB_CTRL_STAT equ 60h 216 <1> 217 <1> ;mov dx, [NAMBAR] ; mixer base address 218 <1> ;add dx, CODEC_EXT_AUDIO_REG ; 28h 219 <1> ;in ax, dx 220 <1> ;and ax, 1 221 <1> ;jnz short _ssr 222 <1> ;pop ax 223 <1> ;jmp short cconf_1 224 <1> 225 <1> _ssr: 226 00000334 8B16[1A09] <1> mov dx, [NAMBAR] 227 00000338 83C22A <1> add dx, CODEC_EXT_AUDIO_CTRL_REG ; 2Ah 228 0000033B ED <1> in ax, dx 229 0000033C 83C801 <1> or ax, 1 230 0000033F EF <1> out dx, ax ; Enable variable rate audio 231 <1> 232 00000340 E86302 <1> call delay1_4ms 233 00000343 E86002 <1> call delay1_4ms 234 00000346 E85D02 <1> call delay1_4ms 235 00000349 E85A02 <1> call delay1_4ms 236 <1> 237 0000034C A1[3209] <1> mov ax, [sample_rate] ; 17/02/2017 (Erdogan Tan) 238 <1> 239 0000034F 8B16[1A09] <1> mov dx, [NAMBAR] 240 00000353 83C22C <1> add dx, CODEC_PCM_FRONT_DACRATE_REG ; 2Ch 241 00000356 EF <1> out dx, ax ; out sample rate 242 <1> 243 <1> ;mov dx, [NAMBAR] 244 <1> ;add dx, CODEC_LR_ADCRATE_REG ; 32h 245 <1> ;out dx, ax 246 <1> 247 00000357 E84C02 <1> call delay1_4ms 248 0000035A E84902 <1> call delay1_4ms 249 0000035D E84602 <1> call delay1_4ms 250 00000360 E84302 <1> call delay1_4ms 251 <1> 252 <1> ;cconf_1: 253 00000363 8B16[1A09] <1> mov dx, [NAMBAR] ; mixer base address 254 00000367 83C200 <1> add dx, CODEC_RESET_REG ; reset register 255 0000036A B82A00 <1> mov ax, 42 256 0000036D EF <1> out dx, ax ; reset 257 <1> 258 0000036E 8B16[1C09] <1> mov dx, [NABMBAR] ; bus master base address 259 00000372 83C260 <1> add dx, PORT_NABM_GLB_CTRL_STAT 260 00000375 B80200 <1> mov ax, 2 261 00000378 EF <1> out dx, ax 262 <1> 263 00000379 B90700 <1> mov cx, 7 264 <1> _100ms: 265 0000037C 51 <1> push cx 266 0000037D E82602 <1> call delay1_4ms 267 00000380 E82302 <1> call delay1_4ms 268 00000383 E82002 <1> call delay1_4ms 269 00000386 E81D02 <1> call delay1_4ms 270 00000389 59 <1> pop cx 271 0000038A E2F0 <1> loop _100ms 272 <1> 273 0000038C 8B16[1A09] <1> mov dx, [NAMBAR] 274 00000390 83C202 <1> add dx, CODEC_MASTER_VOL_REG ;02h 275 00000393 31C0 <1> xor ax, ax ; ; volume attenuation = 0 (max. volume) 276 00000395 EF <1> out dx, ax 277 <1> 278 00000396 8B16[1A09] <1> mov dx, [NAMBAR] 279 0000039A 83C206 <1> add dx, CODEC_MASTER_MONO_VOL_REG ;06h 280 <1> ;xor ax, ax 281 0000039D EF <1> out dx, ax 282 <1> 283 0000039E 8B16[1A09] <1> mov dx, [NAMBAR] 284 000003A2 83C20A <1> add dx, CODEC_PCBEEP_VOL_REG ;0Ah 285 <1> ;xor ax, ax 286 000003A5 EF <1> out dx, ax 287 <1> 288 000003A6 8B16[1A09] <1> mov dx, [NAMBAR] 289 000003AA 83C218 <1> add dx, CODEC_PCM_OUT_REG ;18h 290 <1> ;xor ax, ax 291 000003AD EF <1> out dx, ax 292 <1> 293 000003AE E8F501 <1> call delay1_4ms 294 000003B1 E8F201 <1> call delay1_4ms 295 000003B4 E8EF01 <1> call delay1_4ms 296 000003B7 E8EC01 <1> call delay1_4ms 297 <1> 298 000003BA C3 <1> retn 391 %include 'ich_wav.asm' ; 17/02/2017 (ICH AC97 wav playing functions) 1 <1> ; DOS based .WAV player using AC'97 and codec interface. 2 <1> ; --------------------------------------------------------------- 3 <1> ; NASM version: Erdogan Tan (29/11/2016) 4 <1> ; Last Update: 17/02/2017 (by Erdogan Tan) 5 <1> 6 <1> ; ICHWAV.ASM 7 <1> 8 <1> ; player internal variables and other equates. 9 <1> BUFFERSIZE equ 64 * 1024 ; 64k file buffer size. 10 <1> ENDOFFILE equ BIT0 ; flag for knowing end of file 11 <1> 12 <1> ;=========================================================================== 13 <1> ; entry: none. File is already open and [filehandle] filled. 14 <1> ; exit: not until the song is finished or the user aborts. 15 <1> ; 16 <1> playWav: 17 <1> ; clear buffer 2 18 000003BB 06 <1> push es 19 000003BC A1[2209] <1> mov ax, [WAV_BUFFER2] 20 000003BF 8EC0 <1> mov es, ax 21 000003C1 29C0 <1> sub ax, ax 22 000003C3 89C7 <1> mov di, ax ; 17/02/2017 23 000003C5 B90080 <1> mov cx, (BUFFERSIZE/2) 24 000003C8 F3AB <1> rep stosw 25 000003CA 07 <1> pop es 26 <1> 27 <1> ; load 64k into buffer 1 28 000003CB A1[2009] <1> mov ax, [WAV_BUFFER1] 29 000003CE E8E800 <1> call loadFromFile 30 <1> 31 <1> ; and 64k into buffer 2 32 000003D1 A1[2209] <1> mov ax, [WAV_BUFFER2] 33 000003D4 E8E200 <1> call loadFromFile 34 <1> 35 <1> ; register reset the DMA engine. This may cause a pop noise on the output 36 <1> ; lines when the device is reset. Prolly a better idea to mute output, then 37 <1> ; reset. 38 <1> ; 39 000003D7 8B16[1C09] <1> mov dx, [NABMBAR] 40 000003DB 83C21B <1> add dx, PO_CR_REG ; set pointer to Ctrl reg 41 000003DE B002 <1> mov al, RR ; set reset 42 000003E0 EE <1> out dx, al ; self clearing bit 43 <1> 44 <1> ; write last valid index to 31 to start with. 45 <1> ; The Last Valid Index register tells the DMA engine when to stop playing. 46 <1> ; 47 <1> ; As we progress through the song we change the last valid index to always be 48 <1> ; something other than the index we're currently playing. 49 <1> ; 50 <1> ;;mov al, 1 51 <1> ;mov al, 31 52 <1> ;call setLastValidIndex 53 <1> 54 <1> ; create Buffer Descriptor List 55 <1> ; 56 <1> ; A buffer descriptor list is a list of pointers and control bits that the 57 <1> ; DMA engine uses to know where to get the .wav data and how to play it. 58 <1> ; 59 <1> ; I set it up to use only 2 buffers of .wav data, and whenever 1 buffer is 60 <1> ; playing, I refresh the other one with good data. 61 <1> ; 62 <1> ; 63 <1> ; For the control bits, you can specify that the DMA engine fire an interrupt 64 <1> ; after a buffer has been processed, but I poll the current index register 65 <1> ; to know when it's safe to update the other buffer. 66 <1> ; 67 <1> ; I set the BUP bit, which tells the DMA engine to just play 0's (silence) 68 <1> ; if it ever runs out of data to play. Good for safety. 69 <1> ; 70 000003E1 06 <1> push es 71 000003E2 A1[1E09] <1> mov ax, [BDL_BUFFER] ; get segment # for BDL 72 000003E5 8EC0 <1> mov es, ax 73 <1> 74 000003E7 B91000 <1> mov cx, 32 / 2 ; make 32 entries in BDL 75 000003EA 31FF <1> xor di, di 76 <1> _0: 77 <1> 78 <1> ; set buffer descriptor 0 to start of data file in memory 79 000003EC 660FB706[2009] <1> movzx eax, word [WAV_BUFFER1] 80 000003F2 66C1E004 <1> shl eax, 4 ; convert seg:off ->0:offset 81 000003F6 66AB <1> stosd ; store pointer to wavbuffer1 82 <1> 83 <1> ; 84 <1> ; set length to 32k samples. 1 sample is 16bits or 2bytes. 85 <1> ; Set control (bits 31:16) to BUP, bits 15:0=number of samples. 86 <1> ; 87 <1> 88 <1> ; 17/02/2017 (Erdogan Tan) 89 <1> ; Intel® 82801AA (ICH) & Intel® 82801AB (ICH0) I/O Controller Hub AC ’97 90 <1> ; Programmer’s Reference Manual 91 <1> 92 <1> ; 2.2.1 Buffer Descriptor List (on Page 13) 93 <1> ; 94 <1> ; Generic Form of Buffer Descriptor 95 <1> ; --------------------------------- 96 <1> ; 63 62 61-48 47-32 31-0 97 <1> ; --- --- -------- ------- ----- 98 <1> ; IOC BUP -reserved- Buffer Buffer 99 <1> ; Length Pointer 100 <1> ; [15:0] [31:0] 101 <1> ; 102 <1> ; IOC: Interrupt On Completion. 103 <1> ; 1 = Enabled. 104 <1> ; When this is set, it means that the controller should 105 <1> ; issue an interrupt upon completion of this buffer. 106 <1> ; It should also set the IOC bit in the status register 107 <1> ; 0 = Disabled 108 <1> ; 109 <1> ; BUP: Buffer Underrun Policy. 110 <1> ; 0 = When this buffer is complete, 111 <1> ; if the next buffer is not yet ready 112 <1> ; (i.e., the last valid buffer has been processed), 113 <1> ; then continue to transmit the last valid sample. 114 <1> ; 1 = When this buffer is complete, 115 <1> ; if this is the last valid buffer, transmit zeros after 116 <1> ; this buffer has been processed completely. 117 <1> ; This bit typically is set only if this is the last 118 <1> ; buffer in the current stream. 119 <1> ; 120 <1> ; [31:0]: Buffer pointer. This field points to the location of 121 <1> ; the data buffer. Since samples can be as wide as one 122 <1> ; word, the buffer must be aligned with word boundaries, 123 <1> ; to prevent samples from straddling DWord boundaries. 124 <1> ; 125 <1> ; [15:0]: Buffer Length: This is the length of the data buffer, 126 <1> ; in number of samples. The controller uses this data 127 <1> ; to determine the length of the buffer, in bytes. 128 <1> ; "0" indicates no sample to process. 129 <1> 130 <1> ; ICH2AC97.INC 131 <1> 132 <1> ; IOC equ BIT31 ; Fire an interrupt whenever this 133 <1> ; buffer is complete. 134 <1> 135 <1> ; BUP equ BIT30 ; Buffer Underrun Policy. 136 <1> ; if this buffer is the last buffer 137 <1> ; in a playback, fill the remaining 138 <1> ; samples with 0 (silence) or not. 139 <1> ; It's a good idea to set this to 1 140 <1> ; for the last buffer in playback, 141 <1> ; otherwise you're likely to get a lot 142 <1> ; of noise at the end of the sound. 143 <1> ; 144 <1> ; Bits 15:0 contain the length of the buffer, in number of samples, which 145 <1> ; are 16 bits each, coupled in left and right pairs, or 32bits each. 146 <1> ; Luckily for us, that's the same format as .wav files. 147 <1> ; 148 <1> ; A value of FFFF is 65536 samples. Running at 44.1Khz, that's just about 149 <1> ; 1.5 seconds of sample time. FFFF * 32bits is 1FFFFh bytes or 128k of data. 150 <1> ; 151 <1> ; A value of 0 in these bits means play no samples. 152 <1> ; 153 <1> 154 <1> ; ICHWAV.ASM 155 <1> 156 000003F8 66B800800000 <1> mov eax, BUFFERSIZE / 2 ; size of half buffer (32K) 157 000003FE 660D000000C0 <1> or eax, IOC + BUP 158 00000404 66AB <1> stosd 159 <1> 160 <1> ; 2nd buffer: 161 <1> 162 00000406 660FB706[2209] <1> movzx eax, word [WAV_BUFFER2] 163 0000040C 66C1E004 <1> shl eax, 4 ; convert seg:off ->0:offset 164 00000410 66AB <1> stosd ; store pointer to wavbuffer2 165 <1> 166 <1> ; set length to 64k (32k of two 16 bit samples) 167 <1> ; Set control (bits 31:16) to BUP, bits 15:0=number of samples 168 <1> ; 169 00000412 66B800800000 <1> mov eax, BUFFERSIZE / 2 170 00000418 660D000000C0 <1> or eax, IOC + BUP 171 0000041E 66AB <1> stosd 172 <1> 173 00000420 E2CA <1> loop _0 174 00000422 07 <1> pop es 175 <1> 176 <1> ; 177 <1> ; tell the DMA engine where to find our list of Buffer Descriptors. 178 <1> ; this 32bit value is a flat mode memory offset (ie no segment:offset) 179 <1> ; 180 <1> ; write NABMBAR+10h with offset of buffer descriptor list 181 <1> ; 182 00000423 660FB706[1E09] <1> movzx eax, word [BDL_BUFFER] 183 00000429 66C1E004 <1> shl eax, 4 ; convert seg:off to 0:off 184 0000042D 8B16[1C09] <1> mov dx, [NABMBAR] 185 00000431 83C210 <1> add dx, PO_BDBAR_REG ; set pointer to BDL 186 00000434 66EF <1> out dx, eax ; write to AC97 controller 187 <1> ; 188 <1> ; 189 <1> ; All set. Let's play some music. 190 <1> ; 191 <1> ; 192 <1> ; 08/12/2016 193 <1> ; 07/10/2016 194 <1> ;mov al, 1 195 00000436 B01F <1> mov al, 31 196 00000438 E85201 <1> call setLastValidIndex 197 <1> 198 0000043B C606[1909]01 <1> mov byte [tLoop], 1 ; 30/11/2016 199 <1> 200 <1> ; 17/02/2017 201 00000440 8B16[1C09] <1> mov dx, [NABMBAR] 202 00000444 83C21B <1> add dx, PO_CR_REG ; PCM out Control Register 203 00000447 B011 <1> mov al, IOCE + RPBM ; Enable 'Interrupt On Completion' + run 204 <1> ; (LVBI interrupt will not be enabled) 205 00000449 EE <1> out dx, al ; Start bus master operation. 206 <1> 207 <1> ; while DMA engine is running, examine current index and wait until it hits 1 208 <1> ; as soon as it's 1, we need to refresh the data in wavbuffer1 with another 209 <1> ; 64k. Likewise when it's playing buffer 2, refresh buffer 1 and repeat. 210 <1> 211 <1> ; 08/12/2016 212 <1> ; 28/11/2016 213 <1> p_loop: 214 0000044A E84901 <1> call check4keyboardstop ; keyboard halt? 215 0000044D 7306 <1> jnc short r_loop 216 <1> 217 0000044F C606[1909]00 <1> mov byte [tLoop], 0 218 00000454 C3 <1> retn 219 <1> r_loop: 220 <1> ; 07/12/2016 - Erdogan Tan 221 00000455 90 <1> nop 222 00000456 90 <1> nop 223 00000457 90 <1> nop 224 <1> ; 17/02/2017 225 00000458 A0[2409] <1> mov al, [tBuff] 226 0000045B FEC8 <1> dec al ; 1-32 -> 0-31 or 0 -> 0FFh 227 0000045D 78EB <1> js short p_loop 228 0000045F C606[2409]00 <1> mov byte [tBuff], 0 ; reset 229 00000464 2401 <1> and al, 1 230 00000466 750A <1> jnz short q_loop 231 00000468 A1[2209] <1> mov ax, [WAV_BUFFER2] ; [tBuff]=2 (from tuneLoop) 232 0000046B E84B00 <1> call loadFromFile 233 0000046E 7239 <1> jc short _exit_ 234 00000470 EBE3 <1> jmp short r_loop 235 <1> q_loop: 236 00000472 A1[2009] <1> mov ax, [WAV_BUFFER1] ; [tBuff]=1 (from tuneLoop) 237 00000475 E84100 <1> call loadFromFile 238 00000478 722F <1> jc short _exit_ 239 0000047A EBD9 <1> jmp short r_loop 240 <1> 241 <1> tuneLoop: 242 <1> ; 08/12/2016 243 <1> ; 28/11/2016 - Erdogan Tan 244 <1> 245 0000047C 803E[1909]01 <1> cmp byte [tLoop], 1 246 00000481 722B <1> jb short _exit 247 <1> _tlp_1: 248 <1> ; 17/02/2017 249 00000483 E8FE00 <1> call getCurrentIndex 250 00000486 FEC0 <1> inc al ; 0-31 -> 1-32 251 00000488 A2[2409] <1> mov [tBuff], al 252 <1> 253 <1> ; 17/02/2017 - Buffer switch test (temporary) 254 0000048B 06 <1> push es 255 0000048C BE00B8 <1> mov si, 0B800h ; video display page segment 256 0000048F 8EC6 <1> mov es, si 257 00000491 29F6 <1> sub si, si ; 0 258 00000493 B44E <1> mov ah, 4Eh 259 00000495 2401 <1> and al, 1 260 00000497 0431 <1> add al, '1' 261 00000499 268904 <1> mov [es:si], ax ; show current play buffer (1, 2) 262 0000049C 07 <1> pop es 263 <1> 264 <1> ; 17/02/2017 265 <1> 266 <1> ;test byte [irq_status], LVBCI ; last buff completion intr. 267 <1> ;jz short _tlp2 ; BCIS ; Buffer completion interrupt 268 <1> 269 <1> ; Last Valid Buffer Completion Interrupt (LVBCI). 270 <1> ; 1 = Last valid buffer has been processed. 271 <1> ; It remains active until cleared by software. 272 <1> ; This bit indicates the occurrence of the event 273 <1> ; signified by the last valid buffer being processed. 274 <1> ; Thus, this is an event status bit that can be cleared 275 <1> ; by software once this event has been recognized. 276 <1> ; This event causes an interrupt if the enable bit 277 <1> ; in the Control Register is set. The interrupt is 278 <1> ; cleared when the software clears this bit. 279 <1> ; In the case of Transmits (PCM out, Modem out) this bit 280 <1> ; is set, after the last valid buffer has been 281 <1> ; fetched (not after transmitting it). 282 <1> ; While in the case of Receives, this bit is set after 283 <1> ; the data for the last buffer has been written to memory. 284 <1> ; 0 = Cleared by writing a "1" to this bit position. 285 <1> 286 <1> ; Note: We are not using LVBCI 287 <1> ; Last Buffer Completion Interrupt !!! 288 <1> 289 <1> ; 17/02/2017 290 <1> ;mov dx, [NABMBAR] 291 <1> ;add dx, PO_SR_REG ; PCM out Status register 292 <1> ;mov al, [irq_status] 293 <1> ;out dx, al ; Clear (LVBCI) interrupt status 294 <1> ;retn 295 <1> 296 <1> ;_tlp2: 297 <1> ; Buffer Completion Interrupt Status (BCIS). 298 <1> ; 1 = Set by the hardware after the last sample 299 <1> ; of a buffer has been processed, AND if the Interrupt 300 <1> ; on Completion (IOC) bit is set in the command byte of 301 <1> ; the buffer descriptor. It remains active 302 <1> ; until cleared by software. 303 <1> ; 0 = Cleared by writing a "1" to this bit position. 304 <1> 305 <1> ; 17/02/2017 306 0000049D 8B16[1C09] <1> mov dx, [NABMBAR] 307 000004A1 83C216 <1> add dx, PO_SR_REG ; PCM out Status register 308 000004A4 A0[1709] <1> mov al, [irq_status] 309 000004A7 EE <1> out dx, al ; Clear (BCI) interrupt status 310 000004A8 C3 <1> retn 311 <1> _exit_: 312 000004A9 C606[1909]00 <1> mov byte [tLoop], 0 313 <1> _exit: 314 <1> ; finished with song, stop everything 315 000004AE 8B16[1C09] <1> mov dx, [NABMBAR] 316 000004B2 83C21B <1> add dx, PO_CR_REG ; PCM out Control Register 317 000004B5 B000 <1> mov al, 0 318 000004B7 EE <1> out dx, al ; stop player 319 <1> _return: 320 000004B8 C3 <1> retn 321 <1> 322 <1> ; load data from file in 32k chunks. Would be nice to load 1 64k chunk, 323 <1> ; but in DOS you can only load FFFF bytes at a time. 324 <1> ; 325 <1> ; entry: ax = segment to load data to 326 <1> ; exit: CY set if end of file reached. 327 <1> ; note: last file buffer is padded with 0's to avoid pops at the end of song. 328 <1> ; assumes file is already open. uses [filehandle] 329 <1> ; 330 <1> loadFromFile: 331 <1> ; 17/02/2017 332 000004B9 50 <1> push ax 333 000004BA 51 <1> push cx 334 000004BB 52 <1> push dx 335 000004BC 53 <1> push bx 336 <1> ;push es 337 <1> ;push ds 338 <1> 339 000004BD F606[1609]01 <1> test byte [flags], ENDOFFILE ; have we already read the 340 000004C2 F9 <1> stc ; last of the file? 341 000004C3 0F85A100 <1> jnz endLFF 342 <1> 343 000004C7 A3[3909] <1> mov [fbs_seg], ax ; save buffer segment 344 000004CA 31D2 <1> xor dx, dx 345 <1> lff_0: 346 000004CC 8916[3B09] <1> mov [fbs_off], dx ; buffer offset 347 <1> 348 000004D0 BB0080 <1> mov bx, (BUFFERSIZE / 2) ; 32k chunk 349 000004D3 8A0E[3809] <1> mov cl, [fbs_shift] 350 000004D7 20C9 <1> and cl, cl 351 000004D9 7407 <1> jz short lff_1 ; stereo, 16 bit 352 <1> 353 <1> ; fbs_shift = 354 <1> ; 2 for mono and 8 bit sample (multiplier = 4) 355 <1> ; 1 for mono or 8 bit sample (multiplier = 2) 356 000004DB D3EB <1> shr bx, cl ; 32K / multiplier 357 <1> 358 000004DD 8CC8 <1> mov ax, cs 359 000004DF BA[3D09] <1> mov dx, temp_buffer ; temporary buffer for wav data 360 <1> lff_1: 361 <1> ; 17/02/2017 (stereo/mono, 8bit/16bit corrections) 362 <1> ; load file into memory 363 000004E2 89D9 <1> mov cx, bx 364 000004E4 8B1E[1409] <1> mov bx, [filehandle] 365 000004E8 8ED8 <1> mov ds, ax 366 000004EA B43F <1> mov ah, 3fh 367 000004EC CD21 <1> int 21h 368 <1> 369 000004EE 8CCB <1> mov bx, cs 370 000004F0 8EDB <1> mov ds, bx 371 <1> 372 000004F2 7267 <1> jc short lff_9 ; error ! 373 <1> 374 000004F4 21C0 <1> and ax, ax 375 000004F6 7465 <1> jz short lff_10 376 <1> 377 000004F8 8A1E[3809] <1> mov bl, [fbs_shift] ; shift count 378 000004FC 08DB <1> or bl, bl 379 000004FE 7441 <1> jz short lff_7 ; 16 bit stereo samples 380 <1> 381 00000500 06 <1> push es 382 00000501 57 <1> push di 383 00000502 56 <1> push si 384 00000503 8B3E[3B09] <1> mov di, [fbs_off] 385 00000507 8B36[3909] <1> mov si, [fbs_seg] ; buffer segment 386 0000050B 8EC6 <1> mov es, si 387 0000050D BE[3D09] <1> mov si, temp_buffer ; temporary buffer address 388 00000510 8A0E[3609] <1> mov cl, [bps] ; bits per sample (8 or 16) 389 00000514 80F908 <1> cmp cl, 8 390 00000517 7519 <1> jne short lff_4 ; 16 bit samples 391 <1> ; 8 bit samples 392 00000519 89C1 <1> mov cx, ax ; byte count 393 0000051B FECB <1> dec bl ; shift count, 1 = stereo, 2 = mono 394 0000051D 740A <1> jz short lff_3 ; 8 bit, stereo 395 <1> lff_2: 396 <1> ; mono & 8 bit 397 0000051F AC <1> lodsb 398 00000520 C1E008 <1> shl ax, 8 ; convert 8 bit sample to 16 bit sample 399 00000523 AB <1> stosw ; left channel 400 00000524 AB <1> stosw ; right channel 401 00000525 E2F8 <1> loop lff_2 402 00000527 EB10 <1> jmp short lff_6 403 <1> lff_3: 404 <1> ; stereo & 8 bit 405 00000529 AC <1> lodsb 406 0000052A C1E008 <1> shl ax, 8 ; convert 8 bit sample to 16 bit sample 407 0000052D AB <1> stosw 408 0000052E E2F9 <1> loop lff_3 409 00000530 EB07 <1> jmp short lff_6 410 <1> lff_4: 411 <1> ; 16 bit mono samples 412 00000532 89C1 <1> mov cx, ax ; word count 413 <1> lff_5: 414 00000534 AD <1> lodsw 415 00000535 AB <1> stosw ; left channel 416 00000536 AB <1> stosw ; right channel 417 00000537 E2FB <1> loop lff_5 418 <1> lff_6: 419 00000539 89F8 <1> mov ax, di ; save next buffer offset/position 420 0000053B 5E <1> pop si 421 0000053C 5F <1> pop di 422 0000053D 07 <1> pop es 423 0000053E B90080 <1> mov cx, (BUFFERSIZE / 2) 424 <1> lff_7: 425 00000541 21C0 <1> and ax, ax 426 00000543 7423 <1> jz short endLFF ; ; end of 2nd half 427 <1> 428 00000545 39C8 <1> cmp ax, cx 429 00000547 740A <1> je short lff_8 430 00000549 7215 <1> jb short lff_11 431 0000054B 31C9 <1> xor cx, cx 432 0000054D 29C1 <1> sub cx, ax 433 0000054F F7D9 <1> neg cx 434 00000551 EB0D <1> jmp short lff_11 435 <1> lff_8: 436 00000553 89C2 <1> mov dx, ax ; buffer offset 437 00000555 A1[3909] <1> mov ax, [fbs_seg] ; buffer segment 438 00000558 E971FF <1> jmp lff_0 439 <1> lff_9: 440 0000055B 31C0 <1> xor ax, ax 441 <1> lff_10: 442 0000055D B90080 <1> mov cx, (BUFFERSIZE / 2) 443 <1> lff_11: 444 00000560 E80A00 <1> call padfill ; blank pad the remainder 445 <1> ;clc ; don't exit with CY yet. 446 00000563 800E[1609]01 <1> or byte [flags], ENDOFFILE ; end of file flag 447 <1> endLFF: 448 <1> ;pop ds 449 <1> ;pop es 450 00000568 5B <1> pop bx 451 00000569 5A <1> pop dx 452 0000056A 59 <1> pop cx 453 0000056B 58 <1> pop ax 454 0000056C C3 <1> retn 455 <1> 456 <1> ; entry ds:ax points to last byte in file 457 <1> ; cx=target size 458 <1> ; note: must do byte size fill 459 <1> ; destroys bx, cx 460 <1> ; 461 <1> padfill: 462 <1> ; 17/02/2017 463 0000056D 06 <1> push es 464 0000056E 57 <1> push di 465 0000056F 8B3E[3909] <1> mov di, [fbs_seg] 466 00000573 8EC7 <1> mov es, di 467 00000575 29C1 <1> sub cx, ax 468 00000577 89C7 <1> mov di, ax 469 00000579 033E[3B09] <1> add di, [fbs_off] 470 0000057D 30C0 <1> xor al, al 471 0000057F F3AA <1> rep stosb 472 <1> ;mov [fbs_off], di 473 00000581 5F <1> pop di 474 00000582 07 <1> pop es 475 00000583 C3 <1> retn 476 <1> 477 <1> ; returns AL = current index value 478 <1> getCurrentIndex: 479 <1> ;push dx 480 00000584 8B16[1C09] <1> mov dx, [NABMBAR] 481 00000588 83C214 <1> add dx, PO_CIV_REG 482 0000058B EC <1> in al, dx 483 <1> ;pop dx 484 0000058C C3 <1> retn 485 <1> 486 <1> ;input AL = index # to stop on 487 <1> setLastValidIndex: 488 <1> ;push dx 489 0000058D 8B16[1C09] <1> mov dx, [NABMBAR] 490 00000591 83C215 <1> add dx, PO_LVI_REG 491 00000594 EE <1> out dx, al 492 <1> ;pop dx 493 00000595 C3 <1> retn 494 <1> 495 <1> ; checks if either shift key has been pressed. Exits with CY if so. 496 <1> ; 497 <1> check4keyboardstop: 498 00000596 06 <1> push es 499 00000597 6A00 <1> push 0 500 00000599 07 <1> pop es ; examine BDA for keyboard flags 501 0000059A 26F606170403 <1> test byte [es:417h], (BIT0 | BIT1) 502 000005A0 07 <1> pop es 503 000005A1 F9 <1> stc 504 000005A2 7501 <1> jnz short _cksr 505 000005A4 F8 <1> clc 506 <1> _cksr: 507 000005A5 C3 <1> retn 392 393 ; UTILS.ASM 394 ;---------------------------------------------------------------------------- 395 ; delay1_4ms - Delay for 1/4 millisecond. 396 ; 1mS = 1000us 397 ; Entry: 398 ; None 399 ; Exit: 400 ; None 401 ; 402 ; Modified: 403 ; None 404 ; 405 PORTB EQU 061h 406 REFRESH_STATUS EQU 010h ; Refresh signal status 407 408 delay1_4ms: 409 000005A6 50 push ax 410 000005A7 51 push cx 411 000005A8 B91000 mov cx, 16 ; close enough. 412 000005AB E461 in al,PORTB 413 000005AD 2410 and al,REFRESH_STATUS 414 000005AF 88C4 mov ah,al ; Start toggle state 415 000005B1 09C9 or cx, cx 416 000005B3 7401 jz short _d4ms1 417 000005B5 41 inc cx ; Throwaway first toggle 418 _d4ms1: 419 000005B6 E461 in al,PORTB ; Read system control port 420 000005B8 2410 and al,REFRESH_STATUS ; Refresh toggles 15.085 microseconds 421 000005BA 38C4 cmp ah,al 422 000005BC 74F8 je short _d4ms1 ; Wait for state change 423 424 000005BE 88C4 mov ah,al ; Update with new state 425 000005C0 49 dec cx 426 000005C1 75F3 jnz short _d4ms1 427 428 000005C3 59 pop cx 429 000005C4 58 pop ax 430 000005C5 C3 retn 431 432 ; 13/11/2016 - Erdogan Tan 433 write_ac97_dev_info: 434 ; BUS/DEV/FN 435 ; 00000000BBBBBBBBDDDDDFFF00000000 436 ; DEV/VENDOR 437 ; DDDDDDDDDDDDDDDDVVVVVVVVVVVVVVVV 438 439 000005C6 30FF xor bh, bh 440 000005C8 668B36[2A09] mov esi, [dev_vendor] 441 000005CD 89F0 mov ax, si 442 000005CF 88C3 mov bl, al 443 000005D1 88DA mov dl, bl 444 000005D3 80E30F and bl, 0Fh 445 000005D6 8A87[1608] mov al, [bx+hex_chars] 446 000005DA A2[5908] mov [msgVendorId+3], al 447 000005DD 88D3 mov bl, dl 448 000005DF C0EB04 shr bl, 4 449 000005E2 8A87[1608] mov al, [bx+hex_chars] 450 000005E6 A2[5808] mov [msgVendorId+2], al 451 000005E9 88E3 mov bl, ah 452 000005EB 88DA mov dl, bl 453 000005ED 80E30F and bl, 0Fh 454 000005F0 8A87[1608] mov al, [bx+hex_chars] 455 000005F4 A2[5708] mov [msgVendorId+1], al 456 000005F7 88D3 mov bl, dl 457 000005F9 C0EB04 shr bl, 4 458 000005FC 8A87[1608] mov al, [bx+hex_chars] 459 00000600 A2[5608] mov [msgVendorId], al 460 00000603 66C1EE10 shr esi, 16 461 00000607 89F0 mov ax, si 462 00000609 88C3 mov bl, al 463 0000060B 88DA mov dl, bl 464 0000060D 80E30F and bl, 0Fh 465 00000610 8A87[1608] mov al, [bx+hex_chars] 466 00000614 A2[6A08] mov [msgDevId+3], al 467 00000617 88D3 mov bl, dl 468 00000619 C0EB04 shr bl, 4 469 0000061C 8A87[1608] mov al, [bx+hex_chars] 470 00000620 A2[6908] mov [msgDevId+2], al 471 00000623 88E3 mov bl, ah 472 00000625 88DA mov dl, bl 473 00000627 80E30F and bl, 0Fh 474 0000062A 8A87[1608] mov al, [bx+hex_chars] 475 0000062E A2[6808] mov [msgDevId+1], al 476 00000631 88D3 mov bl, dl 477 00000633 C0EB04 shr bl, 4 478 00000636 8A87[1608] mov al, [bx+hex_chars] 479 0000063A A2[6708] mov [msgDevId], al 480 481 0000063D 668B36[2609] mov esi, [bus_dev_fn] 482 00000642 66C1EE08 shr esi, 8 483 00000646 89F0 mov ax, si 484 00000648 88C3 mov bl, al 485 0000064A 88DA mov dl, bl 486 0000064C 80E307 and bl, 7 ; bit 0,1,2 487 0000064F 8A87[1608] mov al, [bx+hex_chars] 488 00000653 A2[8E08] mov [msgFncNo+1], al 489 00000656 88D3 mov bl, dl 490 00000658 C0EB03 shr bl, 3 491 0000065B 88DA mov dl, bl 492 0000065D 80E30F and bl, 0Fh 493 00000660 8A87[1608] mov al, [bx+hex_chars] 494 00000664 A2[8008] mov [msgDevNo+1], al 495 00000667 88D3 mov bl, dl 496 00000669 C0EB04 shr bl, 4 497 0000066C 8A87[1608] mov al, [bx+hex_chars] 498 00000670 A2[7F08] mov [msgDevNo], al 499 00000673 88E3 mov bl, ah 500 00000675 88DA mov dl, bl 501 00000677 80E30F and bl, 0Fh 502 0000067A 8A87[1608] mov al, [bx+hex_chars] 503 0000067E A2[7408] mov [msgBusNo+1], al 504 00000681 88D3 mov bl, dl 505 00000683 C0EB04 shr bl, 4 506 00000686 8A87[1608] mov al, [bx+hex_chars] 507 0000068A A2[7308] mov [msgBusNo], al 508 509 0000068D A1[3009] mov ax, [ac97_io_base] 510 00000690 88C3 mov bl, al 511 00000692 88DA mov dl, bl 512 00000694 80E30F and bl, 0Fh 513 00000697 8A87[1608] mov al, [bx+hex_chars] 514 0000069B A2[A708] mov [msgIOBaseAddr+3], al 515 0000069E 88D3 mov bl, dl 516 000006A0 C0EB04 shr bl, 4 517 000006A3 8A87[1608] mov al, [bx+hex_chars] 518 000006A7 A2[A608] mov [msgIOBaseAddr+2], al 519 000006AA 88E3 mov bl, ah 520 000006AC 88DA mov dl, bl 521 000006AE 80E30F and bl, 0Fh 522 000006B1 8A87[1608] mov al, [bx+hex_chars] 523 000006B5 A2[A508] mov [msgIOBaseAddr+1], al 524 000006B8 88D3 mov bl, dl 525 000006BA C0EB04 shr bl, 4 526 000006BD 8A87[1608] mov al, [bx+hex_chars] 527 000006C1 A2[A408] mov [msgIOBaseAddr], al 528 529 ; 24/11/2016 530 000006C4 30E4 xor ah, ah 531 000006C6 A0[2509] mov al, [ac97_int_ln_reg] 532 000006C9 B10A mov cl, 10 533 000006CB F6F1 div cl 534 000006CD 0106[AF08] add [msgIRQ], ax 535 000006D1 20C0 and al, al 536 000006D3 7508 jnz short _pmi 537 000006D5 A0[B008] mov al, [msgIRQ+1] 538 000006D8 B420 mov ah, ' ' 539 000006DA A3[AF08] mov [msgIRQ], ax 540 _pmi: 541 000006DD BA[2708] mov dx, msgAC97Info 542 000006E0 B409 mov ah, 9 543 000006E2 CD21 int 21h 544 000006E4 C3 retn 545 546 write_sample_rate: 547 ; ax = sample rate (hertz) 548 549 000006E5 31D2 xor dx, dx 550 000006E7 B90A00 mov cx, 10 551 000006EA F7F1 div cx 552 000006EC 0016[C508] add [msgHertz+4], dl 553 000006F0 29D2 sub dx, dx 554 000006F2 F7F1 div cx 555 000006F4 0016[C408] add [msgHertz+3], dl 556 000006F8 29D2 sub dx, dx 557 000006FA F7F1 div cx 558 000006FC 0016[C308] add [msgHertz+2], dl 559 00000700 29D2 sub dx, dx 560 00000702 F7F1 div cx 561 00000704 0016[C208] add [msgHertz+1], dl 562 00000708 0006[C108] add [msgHertz], al 563 564 0000070C BA[B408] mov dx, msgSampleRate 565 0000070F B409 mov ah, 9 566 00000711 CD21 int 21h 567 568 ; 19/11/2016 569 00000713 BA[DA08] mov dx, msg16Bits 570 00000716 803E[3609]10 cmp byte [bps], 16 571 0000071B 7403 je short wsr_1 572 0000071D BA[CB08] mov dx, msg8Bits 573 wsr_1: 574 00000720 B409 mov ah, 9 575 00000722 CD21 int 21h 576 577 00000724 BA[D308] mov dx, msgMono 578 00000727 803E[3409]01 cmp byte [stmo], 1 579 0000072C 7403 je short wsr_2 580 0000072E BA[E308] mov dx, msgStereo 581 wsr_2: 582 00000731 B409 mov ah, 9 583 00000733 CD21 int 21h 584 585 00000735 C3 retn 586 587 ;detect_codec: 588 ; ; 13/11/2016 - Erdogan Tan (Ref: KolibriOS, codec.inc) 589 ; mov eax, 7Ch 590 ; call codec_read 591 ; shl eax, 16 592 ; mov [codec_id], eax 593 ; 594 ; mov eax, 7Eh 595 ; call codec_read 596 ; or eax, [codec_id] 597 ; mov [codec_chip_id], eax 598 ; and eax, 0FFFFFF00h 599 ; 600 ; mov edi, codecs 601 ;_dcb: 602 ; mov ebx, [di] 603 ; test ebx, ebx 604 ; jz short _dco_unknown 605 ; 606 ; cmp eax, ebx 607 ; jne short _dco_next 608 ; mov ax, [di+4] 609 ; mov [codec_vendor_ids], ax 610 ; movzx esi, ax 611 ; call print_msg 612 ; 613 ; mov ax, [di+6] 614 ; call detect_chip 615 ; retn 616 ; 617 ;_dco_next: 618 ; add di, 8 619 ; jmp short _dcb 620 ; 621 ;_dco_unknown: 622 ; mov word [codec_vendor_ids], ac_unknown 623 ; mov word [codec_chip_ids], chip_unknown 624 ; mov esi, chip_unknown 625 ; call print_msg 626 ; mov eax, [codec_chip_id] 627 ; call dword2str 628 ; call print_msg 629 ; retn 630 631 ;detect_chip: 632 ; ; 13/11/2016 - Erdogan Tan (Ref: KolibriOS, codec.inc) 633 ; mov di, ax ; chip_tab 634 ; mov eax, [codec_chip_id] 635 ; and ax, 0FFh 636 ;_dch1: 637 ; mov bx, [di] 638 ; cmp bx, 0FFh 639 ; je short _dch_unknown 640 ; 641 ; cmp ax, bx 642 ; jne short _dch_next 643 ; mov ax, [di+2] 644 ; mov [codec_chip_ids], ax 645 ; mov si, ax 646 ; call print_msg 647 ; retn 648 649 ;_dch_next: 650 ; add di, 4 651 ; jmp short _dch1 652 ; 653 ;_dch_unknown: 654 ; mov word [codec_chip_ids], chip_unknown 655 ; mov si, chip_unknown 656 ; call print_msg 657 ; mov eax, [codec_chip_id] 658 ; call dword2str 659 ; call print_msg 660 ; retn 661 662 ac97_int_handler: 663 ; 17/02/2016 664 00000736 50 push ax 665 00000737 52 push dx 666 00000738 51 push cx 667 00000739 53 push bx 668 0000073A 56 push si 669 0000073B 57 push di 670 671 0000073C 803E[1809]01 cmp byte [inside], 1 672 00000741 731C jnb short _busy 673 674 00000743 C606[1809]01 mov byte [inside], 1 675 676 00000748 8B16[1C09] mov dx, [NABMBAR] 677 0000074C 83C216 add dx, PO_SR_REG ; set pointer to Status reg 678 0000074F EC in al, dx 679 00000750 A2[1709] mov [irq_status], al 680 00000753 A808 test al, BCIS ; Buffer Completion Interrupt Status (Bit 3) 681 00000755 741C jz short _ih_3 682 683 ; 28/11/2016 - Erdogan Tan 684 00000757 E822FD call tuneLoop 685 _ih0: 686 0000075A C606[1809]00 mov byte [inside], 0 687 _busy: 688 0000075F B020 mov al, 20h 689 00000761 F606[2509]08 test byte [ac97_int_ln_reg], 8 690 00000766 7402 jz short _ih_1 691 00000768 E6A0 out 0A0h, al ; 20h ; EOI 692 _ih_1: 693 0000076A E620 out 20h, al ; 20h ; EOI 694 _ih_2: 695 0000076C 5F pop di 696 0000076D 5E pop si 697 0000076E 5B pop bx 698 0000076F 59 pop cx 699 00000770 5A pop dx 700 00000771 58 pop ax 701 00000772 CF iret 702 _ih_3: 703 ; 17/02/2017 704 00000773 EE out dx, al ; clear interrupt event (by writing 1 to same bits) 705 00000774 EBE4 jmp short _ih0 706 707 print_msg: 708 ; 13/11/2016 - Erdogan Tan 709 ; esi = ASCIIZ text address 710 ; 711 00000776 BB0700 mov bx, 7h 712 00000779 B40E mov ah, 0Eh 713 pm_next_char: 714 0000077B AC lodsb 715 0000077C 20C0 and al, al 716 0000077E 7404 jz short pm_retn 717 00000780 CD10 int 10h 718 00000782 EBF7 jmp short pm_next_char 719 pm_retn: 720 00000784 C3 retn 721 722 dword2str: 723 ; 13/11/2016 - Erdogan Tan 724 ; eax = dword value 725 ; 726 00000785 E84400 call dwordtohex 727 00000788 668916[EC08] mov [dword_str], edx 728 0000078D 66A3[F008] mov [dword_str+4], eax 729 00000791 BE[EC08] mov si, dword_str 730 00000794 C3 retn 731 732 ; trdos386.s (unix386.s) - 10/05/2015 733 ; Convert binary number to hexadecimal string 734 735 bytetohex: 736 ; INPUT -> 737 ; AL = byte (binary number) 738 ; OUTPUT -> 739 ; AX = hexadecimal string 740 ; 741 00000795 53 push bx 742 00000796 30FF xor bh, bh 743 00000798 88C3 mov bl, al 744 0000079A C0EB04 shr bl, 4 745 0000079D 8A9F[1608] mov bl, [bx+hex_chars] 746 000007A1 86D8 xchg bl, al 747 000007A3 80E30F and bl, 0Fh 748 000007A6 8AA7[1608] mov ah, [bx+hex_chars] 749 000007AA 5B pop bx 750 000007AB C3 retn 751 752 wordtohex: 753 ; INPUT -> 754 ; AX = word (binary number) 755 ; OUTPUT -> 756 ; EAX = hexadecimal string 757 ; 758 000007AC 53 push bx 759 000007AD 30FF xor bh, bh 760 000007AF 86E0 xchg ah, al 761 000007B1 50 push ax 762 000007B2 88E3 mov bl, ah 763 000007B4 C0EB04 shr bl, 4 764 000007B7 8A87[1608] mov al, [bx+hex_chars] 765 000007BB 88E3 mov bl, ah 766 000007BD 80E30F and bl, 0Fh 767 000007C0 8AA7[1608] mov ah, [bx+hex_chars] 768 000007C4 66C1E010 shl eax, 16 769 000007C8 58 pop ax 770 000007C9 5B pop bx 771 000007CA EBC9 jmp short bytetohex 772 773 dwordtohex: 774 ; INPUT -> 775 ; EAX = dword (binary number) 776 ; OUTPUT -> 777 ; EDX:EAX = hexadecimal string 778 ; 779 000007CC 6650 push eax 780 000007CE 66C1E810 shr eax, 16 781 000007D2 E8D7FF call wordtohex 782 000007D5 6689C2 mov edx, eax 783 000007D8 6658 pop eax 784 000007DA E8CFFF call wordtohex 785 000007DD C3 retn 786 787 _DATA: 788 789 ; 24/11/2016 790 ; IRQ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 791 000007DE 08090A0B0C0D0E0F70- irq_int db 08h,09h,0Ah,0Bh,0Ch,0Dh,0Eh,0Fh,70h,71h,72h,73h,74h,75h,76h,77h 791 000007E7 71727374757677 792 793 ; 17/02/2017 794 ; Valid ICH device IDs 795 796 valid_ids: 797 000007EE 86801524 dd (ICH_DID << 16) + INTEL_VID ; 8086h:2415h 798 000007F2 86802524 dd (ICH0_DID << 16) + INTEL_VID ; 8086h:2425h 799 000007F6 86804524 dd (ICH2_DID << 16) + INTEL_VID ; 8086h:2445h 800 000007FA 86808524 dd (ICH3_DID << 16) + INTEL_VID ; 8086h:2485h 801 000007FE 8680C524 dd (ICH4_DID << 16) + INTEL_VID ; 8086h:24C5h 802 00000802 8680D524 dd (ICH5_DID << 16) + INTEL_VID ; 8086h:24D5h 803 00000806 86806E26 dd (ICH6_DID << 16) + INTEL_VID ; 8086h:266Eh 804 0000080A 8680A625 dd (ESB6300_DID << 16) + INTEL_VID ; 8086h:25A6h 805 0000080E 86809826 dd (ESB631X_DID << 16) + INTEL_VID ; 8086h:2698h 806 00000812 8680DE27 dd (ICH7_DID << 16) + INTEL_VID ; 8086h:27DEh 807 valid_id_count: equ $ - valid_ids 808 809 ; 13/11/2016 810 00000816 303132333435363738- hex_chars db "0123456789ABCDEF", 0 810 0000081F 3941424344454600 811 00000827 414339372041756469- msgAC97Info db "AC97 Audio Controller & Codec Info", 0Dh, 0Ah 811 00000830 6F20436F6E74726F6C- 811 00000839 6C6572202620436F64- 811 00000842 656320496E666F0D0A 812 0000084B 56656E646F72204944- db "Vendor ID: " 812 00000854 3A20 813 00000856 303030306820446576- msgVendorId db "0000h Device ID: " 813 0000085F 6963652049443A20 814 00000867 30303030680D0A msgDevId db "0000h", 0Dh, 0Ah 815 0000086E 4275733A20 db "Bus: " 816 00000873 303068204465766963- msgBusNo db "00h Device: " 816 0000087C 653A20 817 0000087F 3030682046756E6374- msgDevNo db "00h Function: " 817 00000888 696F6E3A20 818 0000088D 303068 msgFncNo db "00h" 819 00000890 0D0A db 0Dh, 0Ah 820 00000892 492F4F204261736520- db "I/O Base Address: " 820 0000089B 416464726573733A20 821 000008A4 303030306820495251- msgIOBaseAddr db "0000h IRQ: " 821 000008AD 3A20 822 000008AF 3030 msgIRQ dw 3030h 823 000008B1 0D0A24 db 0Dh, 0Ah, "$" 824 000008B4 53616D706C65205261- msgSampleRate db "Sample Rate: " 824 000008BD 74653A20 825 000008C1 303030303020487A20- msgHertz db "00000 Hz ", "$" 825 000008CA 24 826 000008CB 3820626974732024 msg8Bits db "8 bits ", "$" 827 000008D3 4D6F6E6F0D0A24 msgMono db "Mono", 0Dh, 0Ah, "$" 828 000008DA 313620626974732024 msg16Bits db "16 bits ", "$" 829 000008E3 53746572656F0D0A24 msgStereo db "Stereo", 0Dh, 0Ah, "$" 830 831 ;; 13/11/2016 - Erdogan Tan (Ref: KolibriOS, codec.inc) 832 ;codec_id dd 0 833 ;codec_chip_id dd 0 834 ;codec_vendor_ids dw 0 835 ;codec_chip_ids dw 0 836 837 000008EC 3030303030303030 dword_str dd 30303030h, 30303030h 838 000008F4 680D0A00 db 'h', 0Dh, 0Ah, 0 839 840 ;ac_unknown db 'unknown manufacturer',13,10,0 841 ;ac_Realtek db 'Realtek Semiconductor',13,10,0 842 ;ac_Analog db 'Analog Devices',13,10,0 843 ;ac_CMedia db 'C-Media Electronics',13,10,0 844 ;ac_Cirrus db 'Cirrus Logic',13,10,0 845 ;ac_Wolfson db 'Wolfson Microelectronics',13,10,0 846 ;ac_VIA db 'VIA Technologies',13,10,0 847 ;ac_SigmaTel db 'SigmaTel',13,10,0 848 ;ac_eMicro db 'eMicro',13,10,0 849 ; 850 ;chip_unknown db 'unknown codec id ', 0 851 852 ;CHIP_REALTEK equ 414C4700h 853 ;CHIP_CMEDIA equ 434D4900h 854 ;CHIP_VIA equ 56494100h 855 856 ;codecs dd CHIP_CMEDIA 857 ; dw ac_CMedia, chips_CMedia 858 ; dd CHIP_REALTEK 859 ; dw ac_Realtek, chips_Realtek 860 ; dd CHIP_VIA 861 ; dw ac_VIA, chips_VIA 862 ; dd 0 863 864 ;chips_Realtek dw 10h, chip_ALC201a 865 ; dw 20h, chip_ALC650 866 ; dw 21h, chip_ALC650D 867 ; dw 22h, chip_ALC650E 868 ; dw 23h, chip_ALC650F 869 ; dw 60h, chip_ALC655 870 ; dw 80h, chip_ALC658 871 ; dw 81h, chip_ALC658D 872 ; dw 90h, chip_ALC850 873 ; dw 0FFh 874 875 ;chips_CMedia dw 41h, chip_CM9738 876 ; dw 61h, chip_CM9739 877 ; dw 69h, chip_CM9780 878 ; dw 78h, chip_CM9761 879 ; dw 82h, chip_CM9761 880 ; dw 83h, chip_CM9761 881 ; dw 0FFh 882 883 ;chips_VIA dw 61h, chip_VIA1612A 884 ; dw 0FFh 885 886 ;Realtek 887 ;chip_ALC201a db 'ALC201a',0dh,0ah,00h 888 ;chip_ALC650 db 'ALC650 ',0dh,0ah,00h 889 ;chip_ALC650D db 'ALC650D',0dh,0ah,00h 890 ;chip_ALC650E db 'ALC650E',0dh,0ah,00h 891 ;chip_ALC650F db 'ALC650F',0dh,0ah,00h 892 ;chip_ALC655 db 'ALC655 ',0dh,0ah,00h 893 ;chip_ALC658 db 'ALC658 ',0dh,0ah,00h 894 ;chip_ALC658D db 'ALC658D',0dh,0ah,00h 895 ;chip_ALC850 db 'ALC850 ',0dh,0ah,00h 896 897 ;CMedia 898 ;chip_CM9738 db 'CMI9738', 0dh,0ah,0 899 ;chip_CM9739 db 'CMI9739', 0dh,0ah,0 900 ;chip_CM9780 db 'CMI9780', 0dh,0ah,0 901 ;chip_CM9761 db 'CMI9761', 0dh,0ah,0 902 903 ;VIA 904 ;chip_VIA1612A db 'VIA1612A',13,10,0 905 906 ; 17/02/2017 907 bss_start: 908 909 ABSOLUTE bss_start 910 911 alignb 2 912 913 ; 28/11/2016 914 915 000008F8 smpRBuff: resw 14 ; 19/11/2016 - Erdogan Tan 916 917 00000914 filehandle: resw 1 918 919 00000916 flags: resb 1 920 00000917 irq_status: resb 1 921 922 00000918 inside: resb 1 923 00000919 tLoop: resb 1 924 925 ; 17/02/2017 926 ; NAMBAR: Native Audio Mixer Base Address Register 927 ; (ICH, Audio D31:F5, PCI Config Space) Address offset: 10h-13h 928 ; NABMBAR: Native Audio Bus Mastering Base Address register 929 ; (ICH, Audio D31:F5, PCI Config Space) Address offset: 14h-17h 930 0000091A NAMBAR: resw 1 ; BAR for mixer 931 0000091C NABMBAR resw 1 ; BAR for bus master regs 932 933 ; 256 byte buffer for descriptor list 934 0000091E BDL_BUFFER: resw 1 ; segment of our 256byte BDL buffer 935 00000920 WAV_BUFFER1: resw 1 ; segment of our WAV storage 936 ; 64k buffers for wav file storage 937 00000922 WAV_BUFFER2: resw 1 ; segment of 2nd wav buffer 938 939 00000924 tBuff: resb 1 940 941 00000925 ac97_int_ln_reg: resb 1 942 943 ; 12/11/2016 - Erdogan Tan 944 945 00000926 bus_dev_fn: resd 1 946 0000092A dev_vendor: resd 1 947 0000092E stats_cmd: resw 1 ; 17/02/2017 948 00000930 ac97_io_base: resw 1 949 00000932 sample_rate: resw 1 950 ; 19/11/2016 951 00000934 stmo: resw 1 952 00000936 bps: resw 1 953 954 00000938 fbs_shift: resb 1 955 00000939 fbs_seg: resw 1 956 0000093B fbs_off: resw 1 957 958 ; 32 kilo bytes for temporay buffer 959 ; (for stereo-mono, 8bit/16bit corrections) 960 0000093D temp_buffer: resb 32768 961 0000893D alignb 16 962 EOF: