| 1 | ; Project name : XTIDE Universal BIOS
|
|---|
| 2 | ; Description : Defines for DPT structs to present drive geometry
|
|---|
| 3 | ; to ill behaving applications that want
|
|---|
| 4 | ; to read DPT from interrupt vectors 41h and 46h.
|
|---|
| 5 |
|
|---|
| 6 | ;
|
|---|
| 7 | ; XTIDE Universal BIOS and Associated Tools
|
|---|
| 8 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team.
|
|---|
| 9 | ;
|
|---|
| 10 | ; This program is free software; you can redistribute it and/or modify
|
|---|
| 11 | ; it under the terms of the GNU General Public License as published by
|
|---|
| 12 | ; the Free Software Foundation; either version 2 of the License, or
|
|---|
| 13 | ; (at your option) any later version.
|
|---|
| 14 | ;
|
|---|
| 15 | ; This program is distributed in the hope that it will be useful,
|
|---|
| 16 | ; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 17 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|---|
| 18 | ; GNU General Public License for more details.
|
|---|
| 19 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
|
|---|
| 20 | ;
|
|---|
| 21 |
|
|---|
| 22 | %ifndef COMPATIBLE_DPT
|
|---|
| 23 | %define COMPATIBLE_DPT
|
|---|
| 24 |
|
|---|
| 25 | ; Standard DPT for small drives with 1024 or less cylinders
|
|---|
| 26 | struc STANDARD_DPT
|
|---|
| 27 | .wPchsCylinders resb 2 ; 0-1, Physical number of cylinders
|
|---|
| 28 | .bPchsHeads resb 1 ; 2, Physical number of heads
|
|---|
| 29 | .bReserved3to4 resb 2 ; 3-4, Reserved
|
|---|
| 30 | .wPrecompCylinder resb 2 ; 5-6, Write Precompensation Cylinder
|
|---|
| 31 | .bReserved7 resb 1 ; 7, Reserved
|
|---|
| 32 | .bDrvControlByte resb 1 ; 8, Drive Control Byte
|
|---|
| 33 | .bReserved9to11 resb 3 ; 9-11, Reserved
|
|---|
| 34 | .wLandingZone resb 2 ; 12-13, Landing Zone Cylinder
|
|---|
| 35 | .bPchsSectPerTrack resb 1 ; 14, Physical sectors per track
|
|---|
| 36 | .bReserved15 resb 1 ; 15, Reserved
|
|---|
| 37 | endstruc
|
|---|
| 38 |
|
|---|
| 39 |
|
|---|
| 40 | ; Translated DPT for drives with more than 1024 cylinders
|
|---|
| 41 | struc TRANSLATED_DPT
|
|---|
| 42 | .wLchsCylinders resb 2 ; 0-1, Logical number of cylinders
|
|---|
| 43 | .bLchsHeads resb 1 ; 2, Logical number of heads
|
|---|
| 44 | .bSignature resb 1 ; 3, Axh signature to indicate Translated DPT
|
|---|
| 45 | .bPchsSectPerTrack resb 1 ; 4, Physical sectors per track
|
|---|
| 46 | .wPrecompCylinder resb 2 ; 5-6, Write Precompensation Cylinder
|
|---|
| 47 | .bReserved7 resb 1 ; 7, Reserved
|
|---|
| 48 | .bDrvControlByte resb 1 ; 8, Drive Control Byte
|
|---|
| 49 | .wPchsCylinders resb 2 ; 9-10, Physical number of cylinders
|
|---|
| 50 | .bPchsHeads resb 1 ; 11, Physical number of heads
|
|---|
| 51 | .wLandingZone resb 2 ; 12-13, Landing Zone Cylinder
|
|---|
| 52 | .bLchsSectPerTrack resb 1 ; 14, Logical sectors per track
|
|---|
| 53 | .bChecksum resb 1 ; 15, Checksum: 2's complement of the 8-bit unsigned sum of bytes 0-14
|
|---|
| 54 | endstruc
|
|---|
| 55 |
|
|---|
| 56 | TRANSLATED_DPT_SIGNATURE EQU 0A0h
|
|---|
| 57 |
|
|---|
| 58 |
|
|---|
| 59 | ; Device Parameter Table Extension (returned by AH=48h EBIOS function)
|
|---|
| 60 | struc DPTE
|
|---|
| 61 | .wBasePort resb 2 ; 0, Command Block Base Port Address
|
|---|
| 62 | .wControlBlockPort resb 2 ; 2, Control Block Base Port Address
|
|---|
| 63 | .bDrvnhead resb 1 ; 4, Drive and Head Select Register upper nibble
|
|---|
| 64 | .bBiosVendor resb 1 ; 5, BIOS Vendor Specific
|
|---|
| 65 | .bIRQ resb 1 ; 6, IRQ for this device
|
|---|
| 66 | .bBlockSize resb 1 ; 7, Current block size in sectors
|
|---|
| 67 | .bDmaChannelAndType resb 1 ; 8, DMA information
|
|---|
| 68 | .bPioMode resb 1 ; 9, PIO mode
|
|---|
| 69 | .wFlags resb 2 ; 10, BIOS selected hardware specific option flags
|
|---|
| 70 | .wReserved resb 2 ; 12, Reserved. Must be zero.
|
|---|
| 71 | .bRevision resb 1 ; 14, Revision level of this table (11h)
|
|---|
| 72 | .bChecksum resb 1 ; 15, Checksum: 2's complement of the sum of bytes 0-14
|
|---|
| 73 | endstruc
|
|---|
| 74 |
|
|---|
| 75 | ; Flags for DPTE.wFlags
|
|---|
| 76 | FLG_FAST_PIO_ENABLED EQU (1<<0) ; Set if using PIO mode 1 or above (DPTE.bPioMode is valid when set)
|
|---|
| 77 | FLG_DMA_ENABLED EQU (1<<1) ; Set if DMA enabled (DPTE.bDmaChannelAndType is valid when set)
|
|---|
| 78 | FLG_BLOCK_MODE_ENABLED EQU (1<<2) ; Set if Block Mode transfers are enabled (DPTE.bBlockSize is valid when set)
|
|---|
| 79 | FLG_CHS_TRANSLATION_ENABLED EQU (1<<3) ; Set for drives with more than 1024 cylinders
|
|---|
| 80 | FLG_LBA_TRANSLATION_ENABLED EQU (1<<4) ; Set when LBA addresses from DAP are passed directly to the drive
|
|---|
| 81 | FLG_REMOVABLE_MEDIA EQU (1<<5)
|
|---|
| 82 | FLG_ATAPI_DEVICE EQU (1<<6)
|
|---|
| 83 | FLG_32BIT_XFER_MODE EQU (1<<7) ; Set when using 32-bit data transfers
|
|---|
| 84 | FLG_ATAPI_USES_IRQ EQU (1<<8) ; ATAPI Device uses IRQ for data transfers
|
|---|
| 85 | ; L-CHS translation type for old INT 13h (when FLG_CHS_TRANSLATION_ENABLED is set)
|
|---|
| 86 | MASK_CHS_TRANSLATION_TYPE EQU (3<<TRANSLATION_TYPE_FIELD_POSITION)
|
|---|
| 87 | TRANSLATION_TYPE_FIELD_POSITION EQU 9
|
|---|
| 88 | BIT_SHIFT_TRANSLATION EQU 0 ; LARGE
|
|---|
| 89 | LBA_ASSISTED_TRANSLATION EQU 1 ; Assisted LBA
|
|---|
| 90 | ; 2 = reserved
|
|---|
| 91 | VENDOR_SPECIFIC_TRANSLATION EQU 3
|
|---|
| 92 |
|
|---|
| 93 |
|
|---|
| 94 | DPTE_REVISION EQU 11h
|
|---|
| 95 |
|
|---|
| 96 |
|
|---|
| 97 | %endif ; COMPATIBLE_DPT
|
|---|
