- Files:
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- 3 deleted
- 24 edited
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tags/XTIDE_Universal_BIOS_v1.1.1 (deleted)
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trunk/XTIDE_Universal_BIOS/Doc/XTIDE Universal BIOS.odt (modified) (previous)
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trunk/XTIDE_Universal_BIOS/Doc/changes.txt (deleted)
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trunk/XTIDE_Universal_BIOS/Doc/readme.txt (deleted)
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trunk/XTIDE_Universal_BIOS/Inc/Int13h.inc (modified) (2 diffs)
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trunk/XTIDE_Universal_BIOS/Inc/emulate.inc (modified) (1 diff)
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trunk/XTIDE_Universal_BIOS/Src/Boot/BootMenu.asm (modified) (3 diffs)
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trunk/XTIDE_Universal_BIOS/Src/Boot/BootMenuEvent.asm (modified) (1 diff)
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trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h.asm (modified) (6 diffs)
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trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH0h_HReset.asm (modified) (3 diffs)
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trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH11h_HRecal.asm (modified) (2 diffs)
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trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH14h_HDiag.asm (modified) (2 diffs)
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trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH1h_HStatus.asm (modified) (2 diffs)
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trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH2h_HRead.asm (modified) (2 diffs)
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trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH8h_HParams.asm (modified) (1 diff)
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trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH9h_HInit.asm (modified) (3 diffs)
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trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AHDh_HReset.asm (modified) (6 diffs)
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trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/Common/HError.asm (modified) (3 diffs)
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trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/Common/HIRQ.asm (modified) (7 diffs)
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trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/Common/HPIO.asm (modified) (4 diffs)
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trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/Common/HStatus.asm (modified) (7 diffs)
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trunk/XTIDE_Universal_BIOS/Src/Handlers/Int19h.asm (modified) (5 diffs)
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trunk/XTIDE_Universal_BIOS/Src/Initialization/FloppyDrive.asm (modified) (2 diffs)
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trunk/XTIDE_Universal_BIOS/Src/Initialization/Initialize.asm (modified) (2 diffs)
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trunk/XTIDE_Universal_BIOS/Src/Main.asm (modified) (3 diffs)
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wiki/DriveCompatibility.wiki (modified) (1 diff)
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wiki/Manual.wiki (modified) (1 diff)
Legend:
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/trunk/XTIDE_Universal_BIOS/Inc/Int13h.inc
r30 r20 2 2 ; Project name : IDE BIOS 3 3 ; Created date : 23.3.2010 4 ; Last update : 2 9.7.20104 ; Last update : 23.3.2010 5 5 ; Author : Tomi Tilli 6 6 ; Description : Equates used in INT 13h functions. … … 44 44 B_TIMEOUT_BSY EQU (1000/55) ; 1000 ms 45 45 B_TIMEOUT_RDY EQU (1000/55) ; 1000 ms 46 B_TIMEOUT_DRQ EQU 255 ; 14 s (some CF cards occasionally have long write delays)46 B_TIMEOUT_DRQ EQU (5000/55) ; 5000 ms 47 47 B_TIMEOUT_DRVINFO EQU (500/55) ; 500 ms 48 48 B_TIMEOUT_RESET EQU 255 ; 14 s 49 50 49 51 50 -
/trunk/XTIDE_Universal_BIOS/Inc/emulate.inc
r30 r20 152 152 %ifndef USE_386 153 153 %ifidni %1, ax 154 xor ax, ax 154 155 mov al, %2 155 xor ah, ah156 156 %elifidni %1, bx 157 157 mov bl, %2 158 158 xor bh, bh ; %2 may use BX in effective address 159 159 %elifidni %1, cx 160 xor cx, cx 160 161 mov cl, %2 161 xor ch, ch162 162 %elifidni %1, dx 163 xor dx, dx 163 164 mov dl, %2 164 xor dh, dh165 165 %else ; SI, DI, BP (all may be used in effective address) 166 166 push ax 167 xor ax, ax 167 168 mov al, %2 168 xor ah, ah169 169 xchg ax, %1 170 170 pop ax -
/trunk/XTIDE_Universal_BIOS/Src/Boot/BootMenu.asm
r30 r20 2 2 ; Project name : IDE BIOS 3 3 ; Created date : 25.3.2010 4 ; Last update : 29.7.20104 ; Last update : 1.4.2010 5 5 ; Author : Tomi Tilli 6 6 ; Description : Displays Boot Menu. … … 323 323 ; DS: RAMVARS segment 324 324 ; Returns: 325 ; CF: Set if drive number is valid325 ; SF: Set if drive number is valid 326 326 ; Clear if drive is not present in system 327 327 ; Corrupts registers: 328 ; AX , CX328 ; AX 329 329 ;-------------------------------------------------------------------- 330 330 ALIGN JUMP_ALIGN … … 332 332 test dl, 80h ; Floppy drive? 333 333 jz SHORT .IsFloppyDriveIsInSystem 334 call RamVars_GetDriveCounts ; Hard Disk count to CX 335 or cl, 80h ; Set Hard Disk bit to CX 336 jmp SHORT .CompareDriveNumberToDriveCount 334 call RamVars_GetDriveCounts 335 mov ax, 7Fh ; Load mask to clear floppy bit 336 and ax, dx ; AX = Hard Disk index 337 cmp ax, cx ; Valid drive index? 338 ret 339 ALIGN JUMP_ALIGN 337 340 .IsFloppyDriveIsInSystem: 338 call FloppyDrive_GetCount ; Floppy Drive count to CX 339 .CompareDriveNumberToDriveCount: 341 call FloppyDrive_GetCount 340 342 cmp dl, cl 341 343 ret -
/trunk/XTIDE_Universal_BIOS/Src/Boot/BootMenuEvent.asm
r30 r20 283 283 mov dl, [cs:ROMVARS.bBootDrv] ; Default boot drive 284 284 call BootMenu_IsDriveInSystem 285 jnc SHORT .DoNotSetDefaultMenuitem 286 call DriveXlate_SetDriveToSwap 285 jns SHORT .DoNotSetDefaultMenuitem 287 286 call BootMenu_ConvertDriveToMenuitem 288 287 mov ax, 1 -
/trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h.asm
r30 r20 2 2 ; Project name : IDE BIOS 3 3 ; Created date : 21.9.2007 4 ; Last update : 1 .8.20104 ; Last update : 12.4.2010 5 5 ; Author : Tomi Tilli 6 6 ; Description : Int 13h BIOS functions (Floppy and Hard disk). … … 57 57 call RamVars_IsFunctionHandledByThisBIOS 58 58 jnc SHORT Int13h_DirectCallToAnotherBios 59 ;DEBUG_PRINT_DRIVE_AND_FUNCTION60 59 61 60 ; Jump to correct BIOS function … … 89 88 Int13h_UnsupportedFunction: 90 89 Int13h_DirectCallToAnotherBios: 91 ; Temporarily store original DI and DS from stackto RAMVARS90 ; Temporarily store original DI and DS to RAMVARS 92 91 pop WORD [RAMVARS.wI13hDI] 93 92 pop WORD [RAMVARS.wI13hDS] … … 148 147 ; 149 148 ; Int13h_ReturnWithoutSwappingDrives 150 ; Int13h_StoreErrorCodeToBDAandPopDSDIandReturn151 ; Int13h_StoreErrorCodeToBDAandPopXRegsAndReturn152 149 ; Int13h_PopXRegsAndReturn 153 150 ; Int13h_PopDiDsAndReturn … … 163 160 Int13h_ReturnWithoutSwappingDrives: 164 161 pushf 165 dec BYTE [RAMVARS.xlateVars+XLATEVARS.bRecurCnt] ; Preserves CF 166 call HError_StoreBiosErrorCodeFromAHtoBDA 167 jmp SHORT Int13h_Leave 168 169 ALIGN JUMP_ALIGN 170 Int13h_StoreErrorCodeToBDAandPopDSDIandReturn: 171 call HError_StoreBiosErrorCodeFromAHtoBDA 172 jmp SHORT Int13h_PopDiDsAndReturn 173 174 ALIGN JUMP_ALIGN 175 Int13h_StoreErrorCodeToBDAandPopXRegsAndReturn: 176 call HError_StoreBiosErrorCodeFromAHtoBDA 162 dec BYTE [RAMVARS.xlateVars+XLATEVARS.bRecurCnt] 163 jmp SHORT Int13h_StoreErrorCodeAndLeave 177 164 ALIGN JUMP_ALIGN 178 165 Int13h_PopXRegsAndReturn: … … 186 173 pushf 187 174 call DriveXlate_WhenLeavingInt13h 175 Int13h_StoreErrorCodeAndLeave: 176 LOAD_BDA_SEGMENT_TO ds, di 177 mov [BDA.bHDLastSt], ah ; Store error code 188 178 Int13h_Leave: 189 179 popf -
/trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH0h_HReset.asm
r30 r20 2 2 ; Project name : IDE BIOS 3 3 ; Created date : 27.9.2007 4 ; Last update : 2 9.7.20104 ; Last update : 2.5.2010 5 5 ; Author : Tomi Tilli 6 6 ; Description : Int 13h function AH=0h, Disk Controller Reset. … … 23 23 ; DS: RAMVARS segment 24 24 ; Returns: 25 ; AH: Int 13h return status (from drive requested in DL)25 ; AH: Int 13h return status 26 26 ; CF: 0 if succesfull, 1 if error 27 27 ; IF: 1 … … 36 36 push ax 37 37 38 eMOVZX bx, dl ; Copy requested drive to BL, zero BH to assume no errors 39 call ResetFloppyDrivesWithInt40h 40 test bl, 80h 41 jz SHORT .SkipHardDiskReset 42 call ResetForeignHardDisks 43 call AH0h_ResetHardDisksHandledByOurBIOS 44 ALIGN JUMP_ALIGN 45 .SkipHardDiskReset: 46 mov ah, bh ; Copy error code to AH 47 xor al, al ; Zero AL... 48 cmp al, bh ; ...and set CF if error 49 jmp Int13h_StoreErrorCodeToBDAandPopXRegsAndReturn 38 test dl, 80h ; Reset floppy drives only? 39 jz SHORT .ResetForeignControllers 40 call AH0h_ResetOurControllers 41 .ResetForeignControllers: 42 call AH0h_ResetFloppyAndForeignHardDiskControllers 43 jmp Int13h_PopXRegsAndReturn ; Return since error 50 44 51 45 52 46 ;-------------------------------------------------------------------- 53 ; ResetFloppyDrivesWithInt40h 47 ; Resets all IDE controllers handled by this BIOS. 48 ; 49 ; AH0h_ResetOurControllers 54 50 ; Parameters: 55 ; BL: Requested drive (DL when entering AH=00h)56 ; Returns:57 ; BH: Error code from requested drive (if available)58 ; Corrupts registers:59 ; AX, DL, DI60 ;--------------------------------------------------------------------61 ALIGN JUMP_ALIGN62 ResetFloppyDrivesWithInt40h:63 call GetDriveNumberForForeignBiosesToDL64 and dl, 7Fh ; Clear hard disk bit65 xor ah, ah ; Disk Controller Reset66 int INTV_FLOPPY_FUNC67 jmp SHORT BackupErrorCodeFromTheRequestedDriveToBH68 69 70 ;--------------------------------------------------------------------71 ; ResetForeignHardDisks72 ; Parameters:73 ; BL: Requested drive (DL when entering AH=00h)74 51 ; DS: RAMVARS segment 75 52 ; Returns: 76 ; BH: Error code from requested drive (if available) 53 ; AH: Int 13h return status 54 ; CF: 0 if succesfull, 1 if error 77 55 ; Corrupts registers: 78 ; A X, DL, DI79 ;-------------------------------------------------------------------- 56 ; AL, BX, CX, DI 57 ;-------------------------------------------------------------------- 80 58 ALIGN JUMP_ALIGN 81 ResetForeignHardDisks: 82 call GetDriveNumberForForeignBiosesToDL 83 xor ah, ah ; Disk Controller Reset 84 pushf ; Push flags to simulate INT 85 cli ; Disable interrupts since INT does that 86 call FAR [RAMVARS.fpOldI13h] 87 sti ; Make sure interrupts are enabled again (some BIOSes fails to enable it) 88 jmp SHORT BackupErrorCodeFromTheRequestedDriveToBH 89 90 91 ;-------------------------------------------------------------------- 92 ; GetDriveNumberForForeignBiosesToDL 93 ; Parameters: 94 ; BL: Requested drive (DL when entering AH=00h) 95 ; DS: RAMVARS segment 96 ; Returns: 97 ; DL: BL if foreign drive 98 ; 80h if our drive 99 ; Corrupts registers: 100 ; DI 101 ;-------------------------------------------------------------------- 59 AH0h_ResetOurControllers: 60 push dx 61 mov bx, ROMVARS.ideVars0 ; Load offset to first IDEVARS 62 call Initialize_GetIdeControllerCountToCX 102 63 ALIGN JUMP_ALIGN 103 GetDriveNumberForForeignBiosesToDL:104 mov dl, bl105 call RamVars_IsDriveHandledByThisBIOS106 jc SHORT .GetFirstDriveForForeignBios107 ret ; Return what was in BL unmodified108 ALIGN JUMP_ALIGN 109 . GetFirstDriveForForeignBios:110 mov dl, 80h64 .ResetLoop: 65 call AH0h_ResetIdevarsController 66 jc SHORT .Return 67 add bx, BYTE IDEVARS_size 68 loop .ResetLoop 69 xor ax, ax ; Clear AH and CF since no errors 70 .Return: 71 pop dx 111 72 ret 112 73 113 74 114 75 ;-------------------------------------------------------------------- 115 ; ResetHardDisksHandledByOurBIOS 76 ; Resets master and slave drive based on either drive number. 77 ; 78 ; AH0h_ResetIdevarsController 116 79 ; Parameters: 117 ; BL: Requested drive (DL when entering AH=00h)80 ; CS:BX: Ptr to IDEVARS 118 81 ; DS: RAMVARS segment 119 82 ; Returns: 120 ; BH: Error code from requested drive (if available) 83 ; AH: Int 13h return status 84 ; CF: 0 if succesfull, 1 if error 121 85 ; Corrupts registers: 122 ; A X, CX, DX, DI86 ; AL, DX, DI 123 87 ;-------------------------------------------------------------------- 124 88 ALIGN JUMP_ALIGN 125 AH0h_ResetHardDisksHandledByOurBIOS: 126 mov dh, [RAMVARS.bDrvCnt] ; Load drive count to DH 127 test dh, dh 128 jz SHORT .AllDrivesReset ; Return if no drives 129 mov dl, [RAMVARS.bFirstDrv] ; Load number of first our drive 130 add dh, dl ; DH = one past last drive to reset 131 ALIGN JUMP_ALIGN 132 .DriveResetLoop: 133 call AHDh_ResetDrive 134 call .BackupErrorCodeFromMasterOrSlaveToBH 135 inc dx 136 cmp dl, dh ; All done? 137 jb SHORT .DriveResetLoop ; If not, reset next drive 138 .AllDrivesReset: 139 ret 140 141 ;-------------------------------------------------------------------- 142 ; .BackupErrorCodeFromMasterOrSlaveToBH 143 ; Parameters: 144 ; AH: Error code for drive DL reset 145 ; BL: Requested drive (DL when entering AH=00h) 146 ; DL: Drive just resetted 147 ; DS: RAMVARS segment 148 ; Returns: 149 ; BH: Backuped error code 150 ; DL: Incremented if next drive is slave drive 151 ; (=already resetted) 152 ; Corrupts registers: 153 ; CX, DI 154 ;-------------------------------------------------------------------- 155 ALIGN JUMP_ALIGN 156 .BackupErrorCodeFromMasterOrSlaveToBH: 157 call BackupErrorCodeFromTheRequestedDriveToBH 158 mov cx, [RAMVARS.wIdeBase] ; Load base port for resetted drive 159 160 inc dx ; DL to next drive 161 call FindDPT_ForDriveNumber ; Get DPT to DS:DI, store port to RAMVARS 162 jnc SHORT .NoMoreDrivesOrNoSlaveDrive 163 cmp cx, [RAMVARS.wIdeBase] ; Next drive is from same controller? 164 je SHORT BackupErrorCodeFromTheRequestedDriveToBH 165 .NoMoreDrivesOrNoSlaveDrive: 166 dec dx 89 AH0h_ResetIdevarsController: 90 mov dx, [cs:bx+IDEVARS.wPort] 91 call FindDPT_ForIdeMasterAtPort ; Find master drive to DL 92 jc SHORT AH0h_ResetMasterAndSlaveDriveWithRetries 93 call FindDPT_ForIdeSlaveAtPort ; Find slave if master not present 94 jc SHORT AH0h_ResetMasterAndSlaveDriveWithRetries 95 clc 167 96 ret 168 97 169 98 170 99 ;-------------------------------------------------------------------- 171 ; BackupErrorCodeFromTheRequestedDriveToBH 100 ; Resets master and slave drive based on either drive number. 101 ; 102 ; AH0h_ResetMasterAndSlaveDriveWithRetries 172 103 ; Parameters: 173 ; AH: Error code from the last resetted drive 174 ; DL: Drive last resetted 175 ; BL: Requested drive (DL when entering AH=00h) 104 ; DL: Drive number for master or slave drive 176 105 ; Returns: 177 ; BH: Backuped error code 106 ; AH: Int 13h return status 107 ; CF: 0 if succesfull, 1 if error 108 ; Corrupts registers: 109 ; AL, DX, DI 110 ;-------------------------------------------------------------------- 111 ALIGN JUMP_ALIGN 112 AH0h_ResetMasterAndSlaveDriveWithRetries: 113 push cx 114 push bx 115 mov cx, RETRIES_IF_RESET_FAILS 116 ALIGN JUMP_ALIGN 117 .RetryLoop: 118 mov di, cx ; Backup counter 119 call AHDh_ResetDrive 120 jnc SHORT .Return 121 mov cx, TIMEOUT_BEFORE_RESET_RETRY 122 call SoftDelay_TimerTicks 123 mov cx, di 124 loop .RetryLoop 125 mov ah, RET_HD_RESETFAIL 126 stc 127 ALIGN JUMP_ALIGN 128 .Return: 129 pop bx 130 pop cx 131 ret 132 133 134 ;-------------------------------------------------------------------- 135 ; Resets floppy drives and foreign hard disks. 136 ; 137 ; AH0h_ResetFloppyAndForeignHardDiskControllers 138 ; Parameters: 139 ; DL: Drive number (ignored so all drives are reset) 140 ; If bit 7 is set all hard disks and floppy disks reset. 141 ; Returns: 142 ; AH: Int 13h return status 143 ; CF: 0 if succesfull, 1 if error 178 144 ; Corrupts registers: 179 145 ; Nothing 180 146 ;-------------------------------------------------------------------- 181 147 ALIGN JUMP_ALIGN 182 BackupErrorCodeFromTheRequestedDriveToBH: 183 cmp dl, bl ; Requested drive? 184 jne SHORT .Return 185 mov bh, ah 186 ALIGN JUMP_ALIGN 187 .Return: 148 AH0h_ResetFloppyAndForeignHardDiskControllers: 149 xor ah, ah ; AH=0h, Disk Controller Reset 150 pushf ; Push flags to simulate INT 151 cli ; Disable interrupts 152 call FAR [RAMVARS.fpOldI13h] 188 153 ret -
/trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH11h_HRecal.asm
r30 r20 2 2 ; Project name : IDE BIOS 3 3 ; Created date : 28.9.2007 4 ; Last update : 29.7.20104 ; Last update : 12.4.2010 5 5 ; Author : Tomi Tilli 6 6 ; Description : Int 13h function AH=11h, Recalibrate. … … 55 55 mov cx, 1 ; Seek to Cylinder 0, Sector 1 56 56 xor dh, dh ; Head 0 57 jmp AHCh_SeekToCylinder 57 call AHCh_SeekToCylinder 58 ret -
/trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH14h_HDiag.asm
r30 r20 2 2 ; Project name : IDE BIOS 3 3 ; Created date : 28.9.2007 4 ; Last update : 1 .8.20104 ; Last update : 12.4.2010 5 5 ; Author : Tomi Tilli 6 6 ; Description : Int 13h function AH=14h, Controller Internal Diagnostic. … … 33 33 jnz SHORT .ReturnError 34 34 xor ah, ah ; Zero AH and CF since success 35 jmp Int13h_ StoreErrorCodeToBDAandPopDSDIandReturn35 jmp Int13h_PopDiDsAndReturn 36 36 .ReturnError: 37 37 mov ah, RET_HD_RESETFAIL 38 38 stc 39 jmp Int13h_ StoreErrorCodeToBDAandPopDSDIandReturn39 jmp Int13h_PopDiDsAndReturn -
/trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH1h_HStatus.asm
r30 r20 2 2 ; Project name : IDE BIOS 3 3 ; Created date : 27.9.2007 4 ; Last update : 29.7.20104 ; Last update : 12.4.2010 5 5 ; Author : Tomi Tilli 6 6 ; Description : Int 13h function AH=1h, Read Disk Status. … … 28 28 AH1h_HandlerForReadDiskStatus: 29 29 push ds 30 31 30 LOAD_BDA_SEGMENT_TO ds, di 32 31 xor ah, ah ; Zero AH 33 32 cmp ah, [BDA.bHDLastSt] ; Set CF if error code is non-zero 34 xchg ah, [BDA.bHDLastSt] ; Last error to AH, zero to BDA 35 33 mov ah, [BDA.bHDLastSt] 36 34 pop ds 37 35 jmp Int13h_PopDiDsAndReturn -
/trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH2h_HRead.asm
r30 r20 2 2 ; Project name : IDE BIOS 3 3 ; Created date : 27.9.2007 4 ; Last update : 1 .8.20104 ; Last update : 12.4.2010 5 5 ; Author : Tomi Tilli 6 6 ; Description : Int 13h function AH=2h, Read Disk Sectors. … … 63 63 mov ah, RET_HD_INVALID ; Invalid value passed 64 64 stc ; Set CF since error 65 jmp Int13h_ StoreErrorCodeToBDAandPopDSDIandReturn65 jmp Int13h_PopDiDsAndReturn -
/trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH8h_HParams.asm
r30 r20 41 41 ; Returns L-CHS parameters for drive and total hard disk count. 42 42 ; 43 ; AH8h_ GetDriveParameters43 ; AH8h_HParams 44 44 ; Parameters: 45 45 ; DL: Drive number -
/trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH9h_HInit.asm
r30 r20 2 2 ; Project name : IDE BIOS 3 3 ; Created date : 9.12.2007 4 ; Last update : 1.8.20104 ; Last update : 26.4.2010 5 5 ; Author : Tomi Tilli 6 6 ; Description : Int 13h function AH=9h, Initialize Drive Parameters. … … 78 78 .InitializeBlockMode: 79 79 call AH9h_InitializeBlockMode 80 ;mov 80 ;mov dl, [di+DPT.bDrvNum] ; Restore DL 81 81 jc SHORT .ReturnNotSuccessfull 82 82 and BYTE [di+DPT.bReset], ~FLG_RESET_nSETBLOCK 83 84 ; Force PIO mode 085 ;call AH9h_ForcePioMode086 83 87 84 .ReturnNotSuccessfull: … … 152 149 .Return: 153 150 ret 154 155 156 ;--------------------------------------------------------------------157 ; AH9h_ForcePioMode0158 ; Parameters:159 ; DL: Drive number160 ; DS:DI: Ptr to DPT161 ; Returns:162 ; AH: BIOS Error code163 ; CF: Cleared if succesfull164 ; Set if any error165 ; Corrupts registers:166 ; AX, BX167 ;--------------------------------------------------------------------168 ;ALIGN JUMP_ALIGN169 ;AH9h_ForcePioMode0:170 ; mov bh, 08h ; Parameter to Sector Count Register (PIO Flow Control Transfer Mode 0)171 ; mov ax, 2303h ; Feature: Set transfer mode based on value in Sector Count register172 ; int 13h173 ; jc SHORT .FailedToForcePIO0174 ; ; Debug output here175 ; ret176 ;.FailedToForcePIO0:177 ; ; Debug output here178 ; ret -
/trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AHDh_HReset.asm
r30 r20 2 2 ; Project name : IDE BIOS 3 3 ; Created date : 9.12.2007 4 ; Last update : 1 .8.20104 ; Last update : 12.4.2010 5 5 ; Author : Tomi Tilli 6 6 ; Description : Int 13h function AH=Dh, Reset Hard Disk (Alternate reset). … … 25 25 ALIGN JUMP_ALIGN 26 26 AHDh_HandlerForResetHardDisk: 27 push dx 28 push cx 29 push bx 30 push ax 27 31 call AHDh_ResetDrive 28 jmp Int13h_ StoreErrorCodeToBDAandPopDSDIandReturn32 jmp Int13h_PopXRegsAndReturn 29 33 30 34 … … 40 44 ; CF: 0 if succesfull, 1 if error 41 45 ; Corrupts registers: 42 ; DI46 ; AL, BX, CX, DX 43 47 ;-------------------------------------------------------------------- 44 48 ALIGN JUMP_ALIGN 45 49 AHDh_ResetDrive: 46 push dx 47 push cx 48 push bx 49 push ax 50 50 push di 51 51 call FindDPT_ForDriveNumber ; DS:DI now points to DPT 52 52 call AHDh_ResetMasterAndSlave … … 57 57 mov dx, [RAMVARS.wIdeBase] ; Load base port address 58 58 call AHDh_InitializeMasterAndSlave 59 60 pop bx ; Pop old AX 61 mov al, bl ; Restore AL 62 pop bx 63 pop cx 64 pop dx 59 jc SHORT .ReturnError 60 xor ax, ax ; Clear AH since success 61 pop di 62 ret 63 .ReturnError: 64 mov ah, RET_HD_RESETFAIL ; Load Reset Failed error code 65 pop di 65 66 ret 66 67 … … 109 110 ; DX: IDE Base Port address 110 111 ; Returns: 111 ; AH: Error code112 112 ; CF: 0 if initialization succesfull 113 113 ; 1 if any error 114 114 ; Corrupts registers: 115 ; A L, BX, CX, DX, DI115 ; AX, BX, CX, DX, DI 116 116 ;-------------------------------------------------------------------- 117 117 ALIGN JUMP_ALIGN … … 136 136 ret 137 137 .ReturnError: 138 mov ah, RET_HD_RESETFAIL ; Load Reset Failed error code139 138 stc 140 139 ret -
/trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/Common/HError.asm
r30 r20 2 2 ; Project name : IDE BIOS 3 3 ; Created date : 30.11.2007 4 ; Last update : 1.8.20104 ; Last update : 8.4.2010 5 5 ; Author : Tomi Tilli 6 6 ; Description : Error checking functions for BIOS Hard disk functions. … … 10 10 11 11 ;-------------------------------------------------------------------- 12 ; HError_ProcessErrorsAfterPollingTaskFlag 12 ; Converts Status Register error to BIOS error code. 13 ; 14 ; HError_GetErrorCodeForStatusReg 13 15 ; Parameters: 14 ; DS: RAMVARS segment 15 ; ES: BDA segment (zero) 16 ; CF: Set if timeout 17 ; Cleared if task flag was properly set 16 ; AL: IDE Status Register contents 17 ; DX: IDE Status Register Address 18 18 ; Returns: 19 ; AH: BIOS error code 20 ; CF: Set if error 21 ; Cleared if no error 19 ; AH: Hard disk BIOS error code 20 ; CF: 0 if no errors (AH=RET_HD_SUCCESS) 21 ; 1 if some error 22 ; Corrupts registers: 23 ; AL, CX 24 ;-------------------------------------------------------------------- 25 ALIGN JUMP_ALIGN 26 HError_GetErrorCodeForStatusReg: 27 ; Get Error Register contents to AH 28 mov ah, al ; Backup Status Reg to AH 29 sub dx, BYTE REGR_IDE_ST-REGR_IDE_ERROR ; Status Reg to Error Reg 30 in al, dx ; Read Error Register to AL 31 xchg al, ah ; Swap status and error 32 add dx, BYTE REGR_IDE_ST-REGR_IDE_ERROR ; Restore DX 33 34 ; Store Register contents to BDA 35 push ds 36 LOAD_BDA_SEGMENT_TO ds, cx 37 mov [HDBDA.wHDStAndErr], ax ; Store Status and Error to BDA 38 pop ds 39 40 ; Translate registers to BIOS error code 41 ; Fall to HError_ConvertIdeErrorToBiosRet 42 43 ;-------------------------------------------------------------------- 44 ; Converts error flags from IDE status and error register contents 45 ; to BIOS Int 13h return value. 46 ; 47 ; HError_ConvertIdeErrorToBiosRet 48 ; Parameters: 49 ; AL: Status Register Contents 50 ; AH: Error Register Contents 51 ; Returns: 52 ; AH: Hard disk BIOS error code 53 ; CF: 0 if no errors (AH=RET_HD_SUCCESS) 54 ; 1 if any error 22 55 ; Corrupts registers: 23 56 ; AL 24 57 ;-------------------------------------------------------------------- 25 58 ALIGN JUMP_ALIGN 26 HError_ProcessErrorsAfterPollingTaskFlag: 27 jc SHORT HError_ProcessTimeoutAfterPollingBSYandSomeOtherStatusBit 28 mov ax, [es:HDBDA.wHDStAndErr] 29 call GetBiosErrorCodeToAHfromStatusAndErrorRegistersInAX 30 mov [es:BDA.bHDLastSt], ah 31 mov BYTE [es:BDA.bHDTaskFlg], 0 32 ret 33 34 ;-------------------------------------------------------------------- 35 ; HError_ProcessTimeoutAfterPollingBSYandSomeOtherStatusBit 36 ; HError_ProcessErrorsAfterPollingBSY 37 ; Parameters: 38 ; DS: RAMVARS segment 39 ; Returns: 40 ; AH: BIOS error code 41 ; CF: Set if error 42 ; Cleared if no error 43 ; Corrupts registers: 44 ; AL 45 ;-------------------------------------------------------------------- 46 ALIGN JUMP_ALIGN 47 HError_ProcessTimeoutAfterPollingBSYandSomeOtherStatusBit: 48 push ds 49 push dx 50 51 call HError_GetStatusAndErrorRegistersToAXandStoreThemToBDA 52 call GetBiosErrorCodeToAHfromStatusAndErrorRegistersInAX 53 jc SHORT StoreErrorCodeFromAHtoBDA 54 mov ah, RET_HD_TIMEOUT ; Force timeout since no actual error... 55 stc ; ...but wanted bit was never set 56 jmp SHORT StoreErrorCodeFromAHtoBDA 57 58 59 ALIGN JUMP_ALIGN 60 HError_ProcessErrorsAfterPollingBSY: 61 push ds 62 push dx 63 64 call HError_GetStatusAndErrorRegistersToAXandStoreThemToBDA 65 call GetBiosErrorCodeToAHfromStatusAndErrorRegistersInAX 66 StoreErrorCodeFromAHtoBDA: 67 mov [BDA.bHDLastSt], ah ; Store BIOS error code to BDA 68 69 pop dx 70 pop ds 71 ret 72 73 74 ;-------------------------------------------------------------------- 75 ; HError_GetStatusAndErrorRegistersToAXandStoreThemToBDA 76 ; Parameters: 77 ; DS: RAMVARS segment 78 ; Returns: 79 ; AL: IDE Status Register contents 80 ; AH: IDE Error Register contents 81 ; DS: BDA segment 82 ; Corrupts registers: 83 ; DX 84 ;-------------------------------------------------------------------- 85 ALIGN JUMP_ALIGN 86 HError_GetStatusAndErrorRegistersToAXandStoreThemToBDA: 87 mov dx, [RAMVARS.wIdeBase] ; Load IDE base port address 88 inc dx ; Increment to Error Register 89 in al, dx ; Read Error Register... 90 mov ah, al ; ...and copy it to AH 91 add dx, BYTE REGR_IDE_ST - REGR_IDE_ERROR 92 in al, dx ; Read Status Register to AL 93 ; Fall to .StoreStatusAndErrorRegistersFromAXtoBDA 94 95 ;-------------------------------------------------------------------- 96 ; .StoreStatusAndErrorRegistersFromAXtoBDA 97 ; Parameters: 98 ; AL: IDE Status Register contents 99 ; AH: IDE Error Register contents 100 ; Returns: 101 ; DS: BDA segment (zero) 102 ; Corrupts registers: 103 ; DX 104 ;-------------------------------------------------------------------- 105 .StoreStatusAndErrorRegistersFromAXtoBDA: 106 LOAD_BDA_SEGMENT_TO ds, dx 107 mov [HDBDA.wHDStAndErr], ax 108 ret 109 110 111 ;-------------------------------------------------------------------- 112 ; GetBiosErrorCodeToAHfromStatusAndErrorRegistersInAX 113 ; Parameters: 114 ; AL: IDE Status Register contents 115 ; AH: IDE Error Register contents 116 ; Returns: 117 ; AH: BIOS INT 13h error code 118 ; CF: Set if error 119 ; Cleared if no error 120 ; Corrupts registers: 121 ; Nothing 122 ;-------------------------------------------------------------------- 123 ALIGN JUMP_ALIGN 124 GetBiosErrorCodeToAHfromStatusAndErrorRegistersInAX: 125 test al, FLG_IDE_ST_BSY 126 jz SHORT .CheckErrorBitsFromStatusRegisterInAL 127 mov ah, RET_HD_TIMEOUT 128 jmp SHORT .ReturnBiosErrorCodeInAH 129 130 ALIGN JUMP_ALIGN 131 .CheckErrorBitsFromStatusRegisterInAL: 59 HError_ConvertIdeErrorToBiosRet: 60 ; Any error? 132 61 test al, FLG_IDE_ST_DF | FLG_IDE_ST_CORR | FLG_IDE_ST_ERR 133 jnz SHORT . ProcessErrorFromStatusRegisterInAL62 jnz SHORT .ReadErrorFromStatusReg 134 63 xor ah, ah ; No errors, zero AH and CF 135 64 ret 136 65 137 .ProcessErrorFromStatusRegisterInAL: 66 ; Convert error code based on status or error register 67 .ReadErrorFromStatusReg: 138 68 test al, FLG_IDE_ST_ERR ; Error specified in Error register? 139 jnz SHORT . ConvertBiosErrorToAHfromErrorRegisterInAH69 jnz SHORT .ReadErrorFromErrorReg 140 70 mov ah, RET_HD_ECC ; Assume ECC corrected error 141 71 test al, FLG_IDE_ST_CORR ; ECC corrected error? 142 jnz SHORT .Return BiosErrorCodeInAH72 jnz SHORT .Return 143 73 mov ah, RET_HD_CONTROLLER ; Must be Device Fault 144 jmp SHORT .Return BiosErrorCodeInAH74 jmp SHORT .Return 145 75 146 .ConvertBiosErrorToAHfromErrorRegisterInAH: 76 ; Convert error register to bios error code 77 .ReadErrorFromErrorReg: 147 78 push bx 148 mov bx, .rgbRetCodeLookup 149 .ErrorBitLoop: 150 rcr ah, 1 ; Set CF if error bit set 151 jc SHORT .LookupErrorCode 152 inc bx 153 cmp bx, .rgbRetCodeLookup + 8 154 jb SHORT .ErrorBitLoop ; Loop until all bits checked 155 .LookupErrorCode: 79 mov al, ah ; Copy error reg to AL... 80 xor ah, ah ; ...and zero extend to AX 81 eBSF bx, ax ; Get bit index to BX 82 mov ah, RET_HD_STATUSERR ; Error code if Error Reg is zero 83 jz SHORT .SkipLookup ; Return if error register is zero 156 84 mov ah, [cs:bx+.rgbRetCodeLookup] 85 .SkipLookup: 157 86 pop bx 158 159 .ReturnBiosErrorCodeInAH: 87 .Return: 160 88 stc ; Set CF since error 161 89 ret … … 170 98 db RET_HD_UNCORRECC ; Bit6=UNC, Uncorrectable Data Error 171 99 db RET_HD_BADSECTOR ; Bit7=BBK, Bad Block Detected 172 db RET_HD_STATUSERR ; When Error Register is zero173 174 175 ;--------------------------------------------------------------------176 ; HError_StoreBiosErrorCodeFromAHtoBDA177 ; Parameters:178 ; AH: BIOS error code179 ; Returns:180 ; Nothing181 ; Corrupts registers:182 ; DI183 ;--------------------------------------------------------------------184 ALIGN JUMP_ALIGN185 HError_StoreBiosErrorCodeFromAHtoBDA:186 push ds187 mov di, 0 ; Zero DI and preserve FLAGS188 mov ds, di ; Copy BDA segment to DS189 mov [BDA.bHDLastSt], ah190 pop ds191 ret -
/trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/Common/HIRQ.asm
r30 r20 2 2 ; Project name : IDE BIOS 3 3 ; Created date : 11.12.2009 4 ; Last update : 1.8.20104 ; Last update : 28.3.2010 5 5 ; Author : Tomi Tilli 6 6 ; Description : Interrupt handling related functions. … … 20 20 ; Set if any error 21 21 ; Corrupts registers: 22 ; AL 22 ; AL, CX 23 23 ;-------------------------------------------------------------------- 24 24 ALIGN JUMP_ALIGN 25 25 HIRQ_WaitIRQ: 26 ; Load BDA segment to ES 26 27 push es 27 28 LOAD_BDA_SEGMENT_TO es, ax 28 xor ax, ax ; Zero AX and clear CF 29 mov es, ax ; Copy BDA segment (zero) to ES 30 31 ; Check if interrupt has already occurred 32 cli ; Disable interrupts 33 cmp [es:BDA.bHDTaskFlg], al ; Interrupt ready? 34 jne SHORT .CheckIdeErrors ; If so, return 35 29 36 %ifdef USE_AT ; OS hook only available on AT+ machines 30 call .NotifyOperatingSystemAboutWaitingForIRQ 31 cmc 32 jnc SHORT .TaskFlagPollingComplete 33 %endif 34 call .WaitUntilTaskFlagIsSet ; Process errors 35 36 ALIGN JUMP_ALIGN 37 .TaskFlagPollingComplete: 38 call HError_ProcessErrorsAfterPollingTaskFlag 39 pop es 40 ret 41 42 ;-------------------------------------------------------------------- 43 ; .NotifyOperatingSystemAboutWaitingForIRQ 44 ; Parameters: 45 ; ES: BDA segment (zero) 46 ; Returns: 47 ; CF: Set if wait done by operating system 48 ; Cleared if BIOS must perform task flag polling 49 ; Corrupts registers: 50 ; AX 51 ;-------------------------------------------------------------------- 52 %ifdef USE_AT 53 ALIGN JUMP_ALIGN 54 .NotifyOperatingSystemAboutWaitingForIRQ: 55 cli ; Disable interrupts 56 xor ax, ax 57 cmp al, [es:BDA.bHDTaskFlg] ; Task flag already set? 58 jc SHORT .ReturnFromWaitNotify ; If so, skip OS notification 59 37 ; OS device busy notification 60 38 mov ah, 90h ; Hard disk busy (AX=9000h) 61 39 int INTV_SYSTEM_SERVICES ; OS hook, device busy 62 jnc SHORT .ReturnFromWaitNotify ; CF cleared, BIOS handles waiting 63 64 ; Make sure that OS hooks are supported, otherwise the CF means unsupported function 65 test ah, ah ; OS hook supported? (clears CF) 66 jnz SHORT .ReturnFromWaitNotify ; AH has error, BIOS must do the wait 67 stc ; Set CF since wait done by OS 68 .ReturnFromWaitNotify: 40 jnc SHORT .WaitUntilTaskFlagSet ; CF cleared, BIOS handles waiting 41 test ah, ah ; OS hook supported? (clear CF) 42 jz SHORT .CheckIdeErrors ; If so, waiting completed 43 ALIGN JUMP_ALIGN 44 .WaitUntilTaskFlagSet: 45 %endif 46 47 ; Poll task flag until it has been set by interrupt service routine 48 call HIRQ_WaitUntilTaskFlagIsSet 49 jc SHORT .ReturnTimeout ; Return if timeout 50 51 ALIGN JUMP_ALIGN 52 .CheckIdeErrors: 53 mov ax, [es:HDBDA.wHDStAndErr] ; Load Status and Error regs stored by ISR 54 call HError_ConvertIdeErrorToBiosRet 55 .ReturnTimeout: 56 mov BYTE [es:BDA.bHDTaskFlg], 0 ; Clear Task Flag 57 pop es 69 58 sti ; Enable interrupts 70 59 ret 71 %endif 60 72 61 73 62 ;-------------------------------------------------------------------- 74 63 ; Polls IRQ Task Flag until it has been set or timeout. 75 64 ; 76 ; .WaitUntilTaskFlagIsSet65 ; HIRQ_WaitUntilTaskFlagIsSet 77 66 ; Parameters: 78 67 ; DS: RAMVARS segment 79 68 ; ES: BDA segment 80 69 ; Returns: 81 ; CF: Set if timeout82 ; Cleared if Task Flag set83 ; Corrupts registers:84 ; AX85 ; --------------------------------------------------------------------86 ALIGN JUMP_ALIGN 87 .WaitUntilTaskFlagIsSet: 88 push cx 89 70 ; AH: BIOS Error code 71 ; CF: Cleared if wait succesfull 72 ; Set if timeout 73 ; Corrupts registers: 74 ; AL, CX 75 ;-------------------------------------------------------------------- 76 ALIGN JUMP_ALIGN 77 HIRQ_WaitUntilTaskFlagIsSet: 78 sti ; Enable interrupts 90 79 mov cl, B_TIMEOUT_DRQ ; Load timeout ticks 91 80 call SoftDelay_InitTimeout ; Initialize timeout counter … … 93 82 ALIGN JUMP_ALIGN 94 83 .PollIrqFlag: 95 cli ; Disable interrupt until next HLT96 cmp [es:BDA.bHDTaskFlg], al ; Task flag set? (clears CF)97 jne SHORT . Return84 cli ; Disable interrupts 85 cmp [es:BDA.bHDTaskFlg], al ; Task flag set? 86 jne SHORT .TaskFlagIsSet ; If so, return 98 87 call SoftDelay_UpdTimeout ; Update timeout 99 jc SHORT . Return; Return if timeout100 sti ; Enable interrupts ( STI has delay so HLT will catch all interrupts)88 jc SHORT .Timeout ; Return if timeout 89 sti ; Enable interrupts (one instruction delay) 101 90 hlt ; Sleep until any interrupt 102 91 jmp SHORT .PollIrqFlag ; Jump to check if IDE interrupt 103 ALIGN JUMP_ALIGN 104 .Return: 105 pop cx 106 sti 92 93 ALIGN JUMP_ALIGN 94 .TaskFlagIsSet: 95 xor ah, ah ; Zero AH, clear CF 96 ret 97 .Timeout: 98 mov ah, RET_HD_TIMEOUT ; Load error code for timeout 107 99 ret 108 100 … … 142 134 ALIGN JUMP_ALIGN 143 135 HIRQ_InterruptServiceRoutineForIrqs2to7: 136 ; Acknowledge IDE interrupt by reading status register 144 137 push ax 145 call AcknowledgeIdeInterruptAndStoreStatusAndErrorRegistersToBDA 146 138 call ISR_IDE_AcknowledgeIdeAndStoreStatusToBDA 147 139 mov al, CMD_END_OF_INTERRUPT 148 jmp SHORT AcknowledgeMasterInterruptController140 jmp SHORT HIRQ_AcknowledgeMasterController 149 141 150 142 ALIGN JUMP_ALIGN 151 143 HIRQ_InterruptServiceRoutineForIrqs8to15: 152 144 push ax 153 call AcknowledgeIdeInterruptAndStoreStatusAndErrorRegistersToBDA145 call ISR_IDE_AcknowledgeIdeAndStoreStatusToBDA 154 146 155 147 mov al, CMD_END_OF_INTERRUPT ; Load EOI command to AL 156 148 out WPORT_8259SL_COMMAND, al ; Acknowledge Slave 8259 157 AcknowledgeMasterInterruptController:149 HIRQ_AcknowledgeMasterController: 158 150 out WPORT_8259MA_COMMAND, al ; Acknowledge Master 8259 159 151 … … 164 156 %endif 165 157 158 ; Restore registers and return from interrupt 166 159 pop ax ; Restore AX 167 160 iret 161 168 162 169 163 ;-------------------------------------------------------------------- … … 172 166 ; also be set. 173 167 ; 174 ; AcknowledgeIdeInterruptAndStoreStatusAndErrorRegistersToBDA168 ; ISR_IDE_AcknowledgeIdeAndStoreStatusToBDA 175 169 ; Parameters: 176 170 ; Nothing … … 181 175 ;-------------------------------------------------------------------- 182 176 ALIGN JUMP_ALIGN 183 AcknowledgeIdeInterruptAndStoreStatusAndErrorRegistersToBDA:177 ISR_IDE_AcknowledgeIdeAndStoreStatusToBDA: 184 178 push ds 185 179 push di 186 180 push dx 187 181 182 ; Read Status and Error registers. 188 183 ; Reading Status Register acknowledges IDE interrupt 189 184 call RamVars_GetSegmentToDS 190 call HError_GetStatusAndErrorRegistersToAXandStoreThemToBDA 191 mov BYTE [BDA.bHDTaskFlg], 0FFh ; Set task flag 185 mov dx, [RAMVARS.wIdeBase] ; Load IDE base port address 186 inc dx ; Increment to Error Register 187 in al, dx ; Read Error Register... 188 mov ah, al ; ...and copy it to AH 189 add dx, REGR_IDE_ST-REGR_IDE_ERROR 190 in al, dx ; Read Status Register to AL 191 192 ; Store Status and Error register to BDA and set task flag 193 LOAD_BDA_SEGMENT_TO ds, dx 194 mov [HDBDA.wHDStAndErr], ax ; Store Status and Error Registers 195 mov BYTE [BDA.bHDTaskFlg], 0FFh ; Set task flag 192 196 193 197 pop dx -
/trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/Common/HPIO.asm
r30 r20 2 2 ; Project name : IDE BIOS 3 3 ; Created date : 14.12.2007 4 ; Last update : 1 .8.20104 ; Last update : 14.4.2010 5 5 ; Author : Tomi Tilli 6 6 ; Description : PIO transfer functions. … … 168 168 add cx, [bp+PIOVARS.wWordsLeft] ; CX to partial block size 169 169 call [bp+PIOVARS.fnXfer] ; Transfer possibly partial block 170 call HStatus_ReadAndIgnoreAlternateStatus 170 171 jmp HStatus_WaitBsyDefTime ; Check for errors 171 172 .RetError: … … 231 232 HPIO_WriteToDrive: 232 233 cld ; OUTS to increment SI 233 call HStatus_WaitDrqDefTime ; Always poll DRQ for first block , get status reg to DX234 call HStatus_WaitDrqDefTime ; Always poll DRQ for first block 234 235 jc SHORT .RetError ; Return if error (code in AH) 235 236 sub dx, BYTE REGR_IDE_ST ; DX to Data Port address … … 250 251 jmp HStatus_WaitIrqOrRdy ; Check for errors 251 252 252 253 253 254 ;-------------------------------------------------------------------- 254 255 ; Bus specific transfer functions and lookup table. -
/trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/Common/HStatus.asm
r30 r20 2 2 ; Project name : IDE BIOS 3 3 ; Created date : 15.12.2009 4 ; Last update : 1.8.20104 ; Last update : 25.5.2010 5 5 ; Author : Tomi Tilli 6 6 ; Description : IDE Status Register polling functions. … … 25 25 ALIGN JUMP_ALIGN 26 26 HStatus_WaitIrqOrRdy: 27 test BYTE [ bx+DPT.bDrvCtrl], FLG_IDE_CTRL_nIEN28 jnz SHORT .PollRdySinceI nterruptsAreDisabled27 test BYTE [di+DPT.bDrvCtrl], FLG_IDE_CTRL_nIEN 28 jnz SHORT .PollRdySinceIrqsAreDisabled 29 29 jmp HIRQ_WaitIRQ 30 31 ALIGN JUMP_ALIGN 32 .PollRdySinceInterruptsAreDisabled: 30 ALIGN JUMP_ALIGN 31 .PollRdySinceIrqsAreDisabled: 32 call HStatus_ReadAndIgnoreAlternateStatus 33 33 mov cl, B_TIMEOUT_DRQ ; Load DRQ (not RDY) timeout 34 34 jmp SHORT HStatus_WaitRdy ; Jump to poll RDY … … 36 36 37 37 ;-------------------------------------------------------------------- 38 ; Reads Alternate Status Register and ignores result. 39 ; Alternate Status Register is read to prevent polling host from 40 ; reading status before it is valid. 41 ; 42 ; HStatus_ReadAndIgnoreAlternateStatus 43 ; Parameters: 44 ; DS:BX: Ptr to DPT 45 ; Returns: 46 ; Nothing 47 ; Corrupts registers: 48 ; AL, CX, DX 49 ;-------------------------------------------------------------------- 50 ALIGN JUMP_ALIGN 51 HStatus_ReadAndIgnoreAlternateStatus: 52 mov cx, bx ; Backup BX 53 eMOVZX bx, BYTE [bx+DPT.bIdeOff] ; CS:BX now points to IDEVARS 54 mov dx, [cs:bx+IDEVARS.wPortCtrl] ; DX = Control Block base port 55 add dx, BYTE REGR_IDEC_AST ; DX = Alternate Status Register address 56 in al, dx ; Read Alternate Status Register 57 mov bx, cx ; Restore BX 58 ret 59 60 61 ;-------------------------------------------------------------------- 38 62 ; Waits until Hard Disk is ready to transfer data. 39 63 ; … … 50 74 ALIGN JUMP_ALIGN 51 75 HStatus_WaitIrqOrDrq: 52 test BYTE [bx+DPT.bDrvCtrl], FLG_IDE_CTRL_nIEN53 jnz SHORT .PollDrqSinceInterruptsAreDisabled54 jmp HIRQ_WaitIRQ55 56 ALIGN JUMP_ALIGN57 .PollDrqSinceInterruptsAreDisabled:58 76 push dx 59 77 push cx 78 79 ; Check if interrupts are enabled 80 test BYTE [bx+DPT.bDrvCtrl], FLG_IDE_CTRL_nIEN 81 jnz SHORT .PollDRQ ; Poll DRQ if IRQ disabled 82 call HIRQ_WaitIRQ ; Wait for IRQ 83 jmp SHORT .Return 84 85 ALIGN JUMP_ALIGN 86 .PollDRQ: 87 call HStatus_ReadAndIgnoreAlternateStatus 60 88 call HStatus_WaitDrqDefTime 89 ALIGN JUMP_ALIGN 90 .Return: 61 91 pop cx 62 92 pop dx … … 159 189 ; IDE Status register polling. 160 190 ; This function first waits until controller is not busy. 161 ; When not busy, IDE Status Register is polled until wanted flag is set. 191 ; When not busy, IDE Status Register is polled until wanted 192 ; flag (HBIT_ST_DRDY or HBIT_ST_DRQ) is set. 162 193 ; 163 194 ; HStatus_PollBusyAndFlg … … 176 207 ALIGN JUMP_ALIGN 177 208 HStatus_PollBsyAndFlg: 178 call SoftDelay_InitTimeout ; Initialize timeout counter 179 in al, dx ; Discard contents for first read 180 ; (should read Alternate Status Register) 209 call SoftDelay_InitTimeout ; Initialize timeout counter 181 210 ALIGN JUMP_ALIGN 182 211 .PollLoop: 183 in al, dx 184 test al, FLG_IDE_ST_BSY 185 jnz SHORT .UpdateTimeout 186 test al, ah 187 jnz SHORT GetErrorCodeFromPollingToAH; If set, break loop212 in al, dx ; Load IDE Status Register 213 test al, FLG_IDE_ST_BSY ; Controller busy? 214 jnz SHORT .UpdateTimeout ; If so, jump to timeout update 215 test al, ah ; Test secondary flag 216 jnz SHORT HStatus_PollCompleted ; If set, break loop 188 217 ALIGN JUMP_ALIGN 189 218 .UpdateTimeout: 190 call SoftDelay_UpdTimeout ; Update timeout counter 191 jnc SHORT .PollLoop ; Loop if time left (sets CF on timeout) 192 jmp HError_ProcessTimeoutAfterPollingBSYandSomeOtherStatusBit 219 call SoftDelay_UpdTimeout ; Update timeout counter 220 jnc SHORT .PollLoop ; Loop if time left (sets CF on timeout) 221 mov ah, RET_HD_TIMEOUT ; Load error code for timeout 222 ret 223 193 224 194 225 ;-------------------------------------------------------------------- … … 210 241 ALIGN JUMP_ALIGN 211 242 HStatus_PollBsy: 212 call SoftDelay_InitTimeout ; Initialize timeout counter 213 in al, dx ; Discard contents for first read 214 ; (should read Alternate Status Register) 243 call SoftDelay_InitTimeout ; Initialize timeout counter 215 244 ALIGN JUMP_ALIGN 216 245 .PollLoop: 217 in al, dx ; Load IDE Status Reg 218 test al, FLG_IDE_ST_BSY ; Controller busy? 219 jz SHORT GetErrorCodeFromPollingToAH ; If not, jump to check errors 220 call SoftDelay_UpdTimeout ; Update timeout counter 221 jnc SHORT .PollLoop ; Loop if time left (sets CF on timeout) 222 ALIGN JUMP_ALIGN 223 GetErrorCodeFromPollingToAH: 224 jmp HError_ProcessErrorsAfterPollingBSY 246 in al, dx ; Load IDE Status Reg 247 test al, FLG_IDE_ST_BSY ; Controller busy? (clears CF) 248 jz SHORT HStatus_PollCompleted ; If not, jump to check errors 249 call SoftDelay_UpdTimeout ; Update timeout counter 250 jnc SHORT .PollLoop ; Loop if time left (sets CF on timeout) 251 mov ah, RET_HD_TIMEOUT ; Load error code for timeout 252 ret 253 254 ALIGN JUMP_ALIGN 255 HStatus_PollCompleted: 256 test al, FLG_IDE_ST_DF | FLG_IDE_ST_ERR 257 jnz SHORT .GetErrorCode ; If errors, jump to get error code 258 xor ah, ah ; Zero AH and clear CF 259 ret 260 .GetErrorCode: 261 jmp HError_GetErrorCodeForStatusReg -
/trunk/XTIDE_Universal_BIOS/Src/Handlers/Int19h.asm
r30 r20 2 2 ; Project name : IDE BIOS 3 3 ; Created date : 3.8.2007 4 ; Last update : 1.8.20104 ; Last update : 2.5.2010 5 5 ; Author : Tomi Tilli 6 6 ; Description : Int 19h BIOS functions (Boot Strap Loader). … … 10 10 11 11 B_READ_RETRY_TIMES EQU 3 ; Number of times to retry 12 B_READ_RETRY_DELAY EQU 3 ; Timer ticks between retries 12 13 13 14 … … 109 110 ALIGN JUMP_ALIGN 110 111 .ReadRetryLoop: 111 call .ResetBootDriveFromDL 112 call .LoadFirstSectorFromDLtoESBX 112 call Int19h_LoadFirstSectorFromDLToESBX 113 113 jnc SHORT .Return 114 call Int19h_ResetDriveOrWait 114 115 dec di ; Decrement retry counter 115 116 jnz SHORT .ReadRetryLoop ; Loop while retries left … … 120 121 121 122 ;-------------------------------------------------------------------- 122 ; .ResetBootDriveFromDL123 ; Parameters:124 ; DL: Drive to boot from (translated, 00h or 80h)125 ; Returns:126 ; AH: INT 13h error code127 ; CF: Cleared if read successfull128 ; Set if any error129 ; Corrupts registers:130 ; AL131 ;--------------------------------------------------------------------132 ALIGN JUMP_ALIGN133 .ResetBootDriveFromDL:134 xor ax, ax ; AH=0h, Disk Controller Reset135 test dl, 80h ; Floppy drive?136 jz SHORT .ResetDriveFromDL ; If so, jump to reset137 mov ah, 0Dh ; AH=Dh, Reset Hard Disk (Alternate reset)138 .ResetDriveFromDL:139 int INTV_DISK_FUNC140 ret141 142 ;--------------------------------------------------------------------143 123 ; Reads first sector (boot sector) from drive DL to ES:BX. 144 124 ; 145 ; .LoadFirstSectorFromDLtoESBX125 ; Int19h_LoadFirstSectorFromDLToESBX 146 126 ; Parameters: 147 127 ; DL: Drive to boot from (translated, 00h or 80h) … … 156 136 ;-------------------------------------------------------------------- 157 137 ALIGN JUMP_ALIGN 158 .LoadFirstSectorFromDLtoESBX:138 Int19h_LoadFirstSectorFromDLToESBX: 159 139 mov ax, 0201h ; Read 1 sector 160 140 mov cx, 1 ; Cylinder 0, Sector 1 161 141 xor dh, dh ; Head 0 162 142 int INTV_DISK_FUNC 143 ret 144 145 146 ;-------------------------------------------------------------------- 147 ; Reset drive controller or waits a while before retrying 148 ; to load boot sector. 149 ; 150 ; Int19h_ResetDriveOrWait 151 ; Parameters: 152 ; DL: Drive to boot from (translated, 00h or 80h) 153 ; DI: Retry counter 154 ; Returns: 155 ; Nothing 156 ; Corrupts registers: 157 ; CX 158 ;-------------------------------------------------------------------- 159 ALIGN JUMP_ALIGN 160 Int19h_ResetDriveOrWait: 161 test di, 1<<0 ; Reset on every other retry 162 jnz SHORT .ResetDrive 163 mov cx, B_READ_RETRY_DELAY ; Wait for a while 164 jmp SoftDelay_TimerTicks 165 ALIGN JUMP_ALIGN 166 .ResetDrive: 167 xor cx, cx 168 xchg cx, ax ; AH=0h, Disk Controller Reset 169 int INTV_DISK_FUNC 170 xchg ax, cx ; Restore AX 163 171 ret 164 172 -
/trunk/XTIDE_Universal_BIOS/Src/Initialization/FloppyDrive.asm
r30 r20 2 2 ; Project name : IDE BIOS 3 3 ; Created date : 25.3.2010 4 ; Last update : 2 8.7.20104 ; Last update : 2.5.2010 5 5 ; Author : Tomi Tilli 6 6 ; Description : Various floppy drive related functions that … … 25 25 FloppyDrive_IsInt40hInstalled: 26 26 cmp WORD [es:INTV_FLOPPY_FUNC*4+2], 0C000h ; Any ROM segment? 27 cmc 27 jae SHORT .Int40hIsAlreadyInstalled 28 clc 29 ret 30 ALIGN JUMP_ALIGN 31 .Int40hIsAlreadyInstalled: 32 stc 28 33 ret 29 34 -
/trunk/XTIDE_Universal_BIOS/Src/Initialization/Initialize.asm
r30 r20 2 2 ; Project name : IDE BIOS 3 3 ; Created date : 23.3.2010 4 ; Last update : 1.8.20104 ; Last update : 2.5.2010 5 5 ; Author : Tomi Tilli 6 6 ; Description : Functions for initializing the BIOS. … … 418 418 ALIGN JUMP_ALIGN 419 419 Initialize_ResetDetectedDrives: 420 jmp AH0h_ResetHardDisksHandledByOurBIOS 420 ; Initialize to speed up POST. DOS will reset drives anyway. 421 eMOVZX cx, BYTE [RAMVARS.bDrvCnt] 422 jcxz .Return 423 mov dl, [RAMVARS.bFirstDrv] 424 ALIGN JUMP_ALIGN 425 .InitLoop: 426 call AH9h_InitializeDriveForUse 427 inc dx ; Next drive 428 loop .InitLoop 429 .Return: 430 ret -
/trunk/XTIDE_Universal_BIOS/Src/Main.asm
r30 r20 2 2 ; Project name : XTIDE Universal BIOS 3 3 ; Created date : 28.7.2007 4 ; Last update : 2 6.7.20104 ; Last update : 2.5.2010 5 5 ; Author : Tomi Tilli 6 6 ; Description : Main file for BIOS. This is the only file that needs … … 38 38 at ROMVARS.bRomSize, db CNT_ROM_BLOCKS ; ROM size in 512B blocks 39 39 at ROMVARS.rgbJump, jmp Initialize_FromMainBiosRomSearch 40 at ROMVARS.rgbDate, db "0 8/01/10" ; Build data (mm/dd/yy)40 at ROMVARS.rgbDate, db "05/02/10" ; Build data (mm/dd/yy) 41 41 at ROMVARS.rgbSign, db "XTIDE110" ; Signature for flash program 42 42 at ROMVARS.szTitle … … 49 49 db " (XT)=-",STOP 50 50 %endif 51 at ROMVARS.szVersion, db "v1.1. 3 (08/01/10)",STOP51 at ROMVARS.szVersion, db "v1.1.0 (05/02/10)",STOP 52 52 53 53 ;---------------------------; -
/wiki/DriveCompatibility.wiki
r30 r20 1 1 #summary XTIDE Universal BIOS compatibility with hard disks, microdrives and CF cards 2 #labels Featured3 2 <wiki:toc max_depth="1" /> 4 3 -
/wiki/Manual.wiki
r30 r20 1 1 #summary Instructions for XTIDE Universal BIOS v1.1.0 2 #labels Featured,Phase-Deploy3 2 *Table of Contents* 4 3 <wiki:toc max_depth="3" />
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