; **************************************************************************** ; TRDOS386.ASM (TRDOS 386 Kernel - v2.0.0) - DEFINITIONS : trdosk0.s ; ---------------------------------------------------------------------------- ; Last Update: 29/02/2016 ; ---------------------------------------------------------------------------- ; Beginning: 04/01/2016 ; ---------------------------------------------------------------------------- ; Assembler: NASM version 2.11 (trdos386.s) ; ---------------------------------------------------------------------------- ; Derived from TRDOS Operating System v1.0 (8086) source code by Erdogan Tan ; TRDOS2.ASM (09/11/2011) ; **************************************************************************** ; TRDOS2.ASM (c) 2004-2011 Erdogan TAN [ 17/01/2004 ] Last Update: 09/11/2011 ; ; Masterboot / Partition Table at Beginning+1BEh ptBootable equ 0 ptBeginHead equ 1 ptBeginSector equ 2 ptBeginCylinder equ 3 ptFileSystemID equ 4 ptEndHead equ 5 ptEndSector equ 6 ptEndCylinder equ 7 ptStartSector equ 8 ptSectors equ 12 ; Boot Sector Parameters at 7C00h DataArea1 equ -4 DataArea2 equ -2 BootStart equ 0h OemName equ 03h BytesPerSec equ 0Bh SecPerClust equ 0Dh ResSectors equ 0Eh FATs equ 10h RootDirEnts equ 11h Sectors equ 13h Media equ 15h FATSecs equ 16h SecPerTrack equ 18h Heads equ 1Ah Hidden1 equ 1Ch Hidden2 equ 1Eh HugeSec1 equ 20h HugeSec2 equ 22h DriveNumber equ 24h Reserved1 equ 25h bootsignature equ 26h VolumeID equ 27h VolumeLabel equ 2Bh FileSysType equ 36h Reserved2 equ 3Eh ; Starting cluster of P2000 ; FAT32 BPB Structure FAT32_FAT_Size equ 36 FAT32_RootFClust equ 44 FAT32_FSInfoSec equ 48 FAT32_DrvNum equ 64 FAT32_BootSig equ 66 FAT32_VolID equ 67 FAT32_VolLab equ 71 FAT32_FilSysType equ 82 ; BIOS Disk Parameters DPDiskNumber equ 0h DPDType equ 1h DPReturn equ 2h DPHeads equ 3h DPCylinders equ 4h DPSecPerTrack equ 6h DPDisks equ 7h DPTableOff equ 8h DPTableSeg equ 0Ah DPNumOfSecs equ 0Ch ; BIOS INT 13h Extensions (LBA extensions) ; Just After DP Data (DPDiskNumber+) DAP_PacketSize equ 10h ; If extensions present, this byte will be >=10h DAP_Reserved1 equ 11h ; Reserved Byte DAP_NumOfBlocks equ 12h ; Value of this byte must be 0 to 127 DAP_Reserved2 equ 13h ; Reserved Byte DAP_Destination equ 14h ; Address of Transfer Buffer as SEGMENT:OFFSET DAP_LBA_Address equ 18h ; LBA=(C1*H0+H1)*S0+S1-1 ; C1= Selected Cylinder Number ; H0= Number Of Heads (Maximum Head Number + 1) ; H1= Selected Head Number ; S0= Maximum Sector Number ; S1= Selected Sector Number ; QUAD WORD ; DAP_Flat_Destination equ 20h ; 64 bit address, if value in 4h is FFFF:FFFFh ; QUAD WORD (Also, value in 0h must be 18h) ; TR-DOS will not use 64 bit Flat Address ; INT 13h Function 48h "Get Enhanced Disk Drive Parameters" ; Just After DP Data (DPDiskNumber+) GetDParams_48h equ 20h ; Word. Data Length, must be 26 (1Ah) for short data. GDP_48h_InfoFlag equ 22h ; Word ; Bit 1 = 1 -> The geometry returned in bytes 4-15 is valid. GDP_48h_NumOfPCyls equ 24h ; Double Word. Number physical cylinders. GDP_48h_NumOfPHeads equ 28h ; Double Word. Number of physical heads. GDP_48h_NumOfPSpT equ 2Ch ; Double word. Num of physical sectors per track. GDP_48h_LBA_Sectors equ 30h ; 8 bytes. Number of physical/LBA sectors. GDP_48h_BytesPerSec equ 38h ; Word. Number of bytes in a sector. ; TR-DOS Standalone Program Extensions to the DiskParams Block ; Just After DP Data (DPDiskNumber+) TRDP_CurrentSector equ 3Ah ; DX:AX (LBA) TRDP_SectorCount equ 3Eh ; CX (or Counter) ; DOS Logical Disks LD_Name equ 0 LD_DiskType equ 1 LD_PhyDrvNo equ 2 LD_FATType equ 3 LD_FSType equ 4 LD_LBAYes equ 5 LD_BPB equ 6 LD_FATBegin equ 96 LD_ROOTBegin equ 100 LD_DATABegin equ 104 LD_StartSector equ 108 LD_TotalSectors equ 112 LD_FreeSectors equ 116 LD_Clusters equ 120 LD_PartitionEntry equ 124 LD_DParamEntry equ 125 LD_MediaChanged equ 126 LD_CDirLevel equ 127 LD_CurrentDirectory equ 128 ; Singlix FS Extensions to DOS Logical Disks ; 03/01/2010 (LD_BPB compatibility for CHS r/w) LD_FS_Name equ 0 LD_FS_DiskType equ 1 LD_FS_PhyDrvNo equ 2 LD_FS_FATType equ 3 LD_FS_FSType equ 4 LD_FS_LBAYes equ 5 LD_FS_BPB equ 6 LD_FS_MediaAttrib equ 6 LD_FS_VersionMajor equ 7 LD_FS_RootDirD equ 8 LD_FS_MATLocation equ 12 LD_FS_Reserved1 equ 16 ;1 reserved byte LD_FS_BytesPerSec equ 17 ; LD_BPB + 0Bh LD_FS_Reserved2 equ 19 ;2 reserved byte LD_FS_DATLocation equ 20 LD_FS_DATSectors equ 24 LD_FS_Reserved3 equ 28 ;3 reserved word LD_FS_SecPerTrack equ 30 ; LD_BPB + 18h LD_FS_NumHeads equ 32 ; LD_BPB + 1Ah LD_FS_UnDelDirD equ 34 LD_FS_Reserved4 equ 38 ;4 reserved word LD_FS_VolumeSerial equ 40 LD_FS_VolumeName equ 44 LD_FS_BeginSector equ 108 LD_FS_VolumeSize equ 112 LD_FS_FreeSectors equ 116 LD_FS_FirstFreeSector equ 120 LD_FS_PartitionEntry equ 124 LD_FS_DParamEntry equ 125 LD_FS_MediaChanged equ 126 LD_FS_CDirLevel equ 127 LD_FS_CDIR_Converted equ 128 ; Valid FAT Types FS_FAT12 equ 1 FS_FAT16_CHS equ 2 FS_FAT32_CHS equ 3 FS_FAT16_LBA equ 4 FS_FAT32_LBA equ 5 ; Cursor Location CCCpointer equ 0450h ; BIOS data, current cursor column ; FAT Clusters EOC sign FAT12EOC equ 0FFFh FAT16EOC equ 0FFFFh ;FAT32EOC equ 0FFFFFFFh ; It is not direct usable for 8086 code ; BAD Cluster FAT12BADC equ 0FF7h FAT16BADC equ 0FFF7h ;FAT32BADC equ 0FFFFFF7h ; It is not direct usable for 8086 code ; MS-DOS FAT16 FS (Maximum Possible) Last Cluster Number= 0FFF6h ; TRFS bs_FS_JmpBoot equ 0 ; jmp short bsBootCode ; db 0EBh, db 3Fh, db 90h bs_FS_Identifier equ 3 ; db 'FS', db 0 bs_FS_BytesPerSec equ 6 ; dw 512 bs_FS_MediaAttrib equ 8 ; db 3 bs_FS_PartitionID equ 9 ; db 0A1h bs_FS_VersionMaj equ 10 ; db 01h bs_FS_VersionMin equ 11 ; db 0 bs_FS_BeginSector equ 12 ; dd 0 bs_FS_VolumeSize equ 16 ; dd 2880 bs_FS_StartupFD equ 20 ; dd 0 bs_FS_MATLocation equ 24 ; dd 1 bs_FS_RootDirD equ 28 ; dd 8 bs_FS_SystemConfFD equ 32 ; dd 0 bs_FS_SwapFD equ 36 ; dd 0 bs_FS_UnDelDirD equ 40 ; dd 0 bs_FS_DriveNumber equ 44 ; db 0 bs_FS_LBA_Ready equ 45 ; db 0 bs_FS_MagicWord equ 46 bs_FS_SecPerTrack equ 46 ; db 0A1h bs_FS_Heads equ 47 ; db 01h bs_FS_OperationSys equ 48 ; db "TR-SINGLIX v1.0b" bs_FS_Terminator equ 64 ; db 0 bs_FS_BootCode equ 65 FS_MAT_DATLocation equ 12 FS_MAT_DATScount equ 16 FS_MAT_FreeSectors equ 20 FS_MAT_FirstFreeSector equ 24 FS_RDT_VolumeSerialNo equ 28 FS_RDT_VolumeName equ 64 ; FAT12 + FAT16 + FAT32 BS_JmpBoot equ 0 BS_OEMName equ 3 BPB_BytsPerSec equ 11 BPB_SecPerClust equ 13 BPB_RsvdSecCnt equ 14 BPB_NumFATs equ 16 BPB_RootEntCnt equ 17 BPB_TotalSec16 equ 19 BPB_Media equ 21 BPB_FATSz16 equ 22 BPB_SecPerTrk equ 24 BPB_NumHeads equ 26 BPB_HiddSec equ 28 BPB_TotalSec32 equ 32 ; FAT12 and FAT16 only BS_DrvNum equ 36 BS_Reserved1 equ 37 BS_BootSig equ 38 BS_VolID equ 39 BS_VolLab equ 43 BS_FilSysType equ 54 ; 8 bytes BS_BootCode equ 62 ; FAT32 only BPB_FATSz32 equ 36 ; FAT32, 4 bytes BPB_ExtFlags equ 40 ; FAT32, 2 bytes BPB_FSVer equ 42 ; FAT32, 2 bytes BPB_RootClus equ 44 ; FAT32, 4 bytes BPB_FSInfo equ 48 ; FAT 32, 2 bytes BPB_BkBootSec equ 50 ; FAT32, 2 bytes BPB_Reserved equ 52 ; FAT32, 12 bytes BS_FAT32_DrvNum equ 64 ; FAT32, 1 byte BS_FAT32_Reserved1 equ 65 ; FAT32, 1 byte BS_FAT32_BootSig equ 66 ; FAT32, 1 byte BS_FAT32_VolID equ 67 ; FAT32, 4 bytes BS_FAT32_VolLab equ 71 ; FAT32, 11 bytes BS_FAT32_FilSysType equ 82 ; FAT32, 8 bytes BS_FAT32_BootCode equ 90 ; 29/02/2016 ;(FAT32 Free Cluster Count & First Free Cluster values) ;[BPB_Reserved] = Free Cluster Count (offset 52) ;[BPB_Reserved+4] = First Free Cluster (offset 56) BS_Validation equ 510 ; 15/02/2016 ; FILE.ASM - 09/10/2011 ; Directory Entry Structure ; 29/10/2009 (According to Microsoft FAT32 File System Specification) DirEntry_Name equ 0 DirEntry_Attr equ 11 DirEntry_NTRes equ 12 DirEntry_CrtTimeTenth equ 13 DirEntry_CrtTime equ 14 DirEntry_CrtDate equ 16 DirEntry_LastAccDate equ 18 DirEntry_FstClusHI equ 20 DirEntry_WrtTime equ 22 DirEntry_WrtDate equ 24 DirEntry_FstClusLO equ 26 DirEntry_FileSize equ 28