; Project name : XTIDE Universal BIOS ; Description : Defines for DPT structs to present drive geometry ; to ill behaving applications that want ; to read DPT from interrupt vectors 41h and 46h. ; ; XTIDE Universal BIOS and Associated Tools ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team. ; ; This program is free software; you can redistribute it and/or modify ; it under the terms of the GNU General Public License as published by ; the Free Software Foundation; either version 2 of the License, or ; (at your option) any later version. ; ; This program is distributed in the hope that it will be useful, ; but WITHOUT ANY WARRANTY; without even the implied warranty of ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ; GNU General Public License for more details. ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html ; %ifndef COMPATIBLE_DPT %define COMPATIBLE_DPT ; Standard DPT for small drives with 1024 or less cylinders struc STANDARD_DPT .wPchsCylinders resb 2 ; 0-1, Physical number of cylinders .bPchsHeads resb 1 ; 2, Physical number of heads .bReserved3to4 resb 2 ; 3-4, Reserved .wPrecompCylinder resb 2 ; 5-6, Write Precompensation Cylinder .bReserved7 resb 1 ; 7, Reserved .bDrvControlByte resb 1 ; 8, Drive Control Byte .bReserved9to11 resb 3 ; 9-11, Reserved .wLandingZone resb 2 ; 12-13, Landing Zone Cylinder .bPchsSectPerTrack resb 1 ; 14, Physical sectors per track .bReserved15 resb 1 ; 15, Reserved endstruc ; Translated DPT for drives with more than 1024 cylinders struc TRANSLATED_DPT .wLchsCylinders resb 2 ; 0-1, Logical number of cylinders .bLchsHeads resb 1 ; 2, Logical number of heads .bSignature resb 1 ; 3, Axh signature to indicate Translated DPT .bPchsSectPerTrack resb 1 ; 4, Physical sectors per track .wPrecompCylinder resb 2 ; 5-6, Write Precompensation Cylinder .bReserved7 resb 1 ; 7, Reserved .bDrvControlByte resb 1 ; 8, Drive Control Byte .wPchsCylinders resb 2 ; 9-10, Physical number of cylinders .bPchsHeads resb 1 ; 11, Physical number of heads .wLandingZone resb 2 ; 12-13, Landing Zone Cylinder .bLchsSectPerTrack resb 1 ; 14, Logical sectors per track .bChecksum resb 1 ; 15, Checksum: 2's complement of the 8-bit unsigned sum of bytes 0-14 endstruc TRANSLATED_DPT_SIGNATURE EQU 0A0h ; Device Parameter Table Extension (returned by AH=48h EBIOS function) struc DPTE .wBasePort resb 2 ; 0, Command Block Base Port Address .wControlBlockPort resb 2 ; 2, Control Block Base Port Address .bDrvnhead resb 1 ; 4, Drive and Head Select Register upper nibble .bBiosVendor resb 1 ; 5, BIOS Vendor Specific .bIRQ resb 1 ; 6, IRQ for this device .bBlockSize resb 1 ; 7, Current block size in sectors .bDmaChannelAndType resb 1 ; 8, DMA information .bPioMode resb 1 ; 9, PIO mode .wFlags resb 2 ; 10, BIOS selected hardware specific option flags .wReserved resb 2 ; 12, Reserved. Must be zero. .bRevision resb 1 ; 14, Revision level of this table (11h) .bChecksum resb 1 ; 15, Checksum: 2's complement of the sum of bytes 0-14 endstruc ; Flags for DPTE.wFlags FLG_FAST_PIO_ENABLED EQU (1<<0) ; Set if using PIO mode 1 or above (DPTE.bPioMode is valid when set) FLG_DMA_ENABLED EQU (1<<1) ; Set if DMA enabled (DPTE.bDmaChannelAndType is valid when set) FLG_BLOCK_MODE_ENABLED EQU (1<<2) ; Set if Block Mode transfers are enabled (DPTE.bBlockSize is valid when set) FLG_CHS_TRANSLATION_ENABLED EQU (1<<3) ; Set for drives with more than 1024 cylinders FLG_LBA_TRANSLATION_ENABLED EQU (1<<4) ; Set when LBA addresses from DAP are passed directly to the drive FLG_REMOVABLE_MEDIA EQU (1<<5) FLG_ATAPI_DEVICE EQU (1<<6) FLG_32BIT_XFER_MODE EQU (1<<7) ; Set when using 32-bit data transfers FLG_ATAPI_USES_IRQ EQU (1<<8) ; ATAPI Device uses IRQ for data transfers ; L-CHS translation type for old INT 13h (when FLG_CHS_TRANSLATION_ENABLED is set) MASK_CHS_TRANSLATION_TYPE EQU (3<