| 1 | ; File name : Int13h_Jump.asm
|
|---|
| 2 | ; Project name : IDE BIOS
|
|---|
| 3 | ; Created date : 21.9.2007
|
|---|
| 4 | ; Last update : 1.8.2010
|
|---|
| 5 | ; Author : Tomi Tilli
|
|---|
| 6 | ; Description : Int 13h BIOS functions (Floppy and Hard disk).
|
|---|
| 7 |
|
|---|
| 8 | ; Section containing code
|
|---|
| 9 | SECTION .text
|
|---|
| 10 |
|
|---|
| 11 | ;--------------------------------------------------------------------
|
|---|
| 12 | ; Macro that prints drive and function number.
|
|---|
| 13 | ; Used only for debugging.
|
|---|
| 14 | ;
|
|---|
| 15 | ; DEBUG_PRINT_DRIVE_AND_FUNCTION
|
|---|
| 16 | ; Parameters:
|
|---|
| 17 | ; AH: INT 13h function number
|
|---|
| 18 | ; DL: Drive number
|
|---|
| 19 | ; Returns:
|
|---|
| 20 | ; Nothing
|
|---|
| 21 | ; Corrupts registers:
|
|---|
| 22 | ; Nothing
|
|---|
| 23 | ;--------------------------------------------------------------------
|
|---|
| 24 | %macro DEBUG_PRINT_DRIVE_AND_FUNCTION 0
|
|---|
| 25 | push dx
|
|---|
| 26 | push ax
|
|---|
| 27 | mov al, dl
|
|---|
| 28 | call Print_IntHexW
|
|---|
| 29 | pop ax
|
|---|
| 30 | pop dx
|
|---|
| 31 | %endmacro
|
|---|
| 32 |
|
|---|
| 33 |
|
|---|
| 34 | ;--------------------------------------------------------------------
|
|---|
| 35 | ; Int 13h software interrupt handler.
|
|---|
| 36 | ; Jumps to specific function defined in AH.
|
|---|
| 37 | ;
|
|---|
| 38 | ; Int13h_Jump
|
|---|
| 39 | ; Parameters:
|
|---|
| 40 | ; AH: Bios function
|
|---|
| 41 | ; DL: Drive number
|
|---|
| 42 | ; Returns:
|
|---|
| 43 | ; Depends on function
|
|---|
| 44 | ; Corrupts registers:
|
|---|
| 45 | ; Flags
|
|---|
| 46 | ;--------------------------------------------------------------------
|
|---|
| 47 | ALIGN JUMP_ALIGN
|
|---|
| 48 | Int13h_DiskFunctions:
|
|---|
| 49 | ; Save registers
|
|---|
| 50 | sti ; Enable interrupts
|
|---|
| 51 | push ds ; Store DS
|
|---|
| 52 | push di ; Store DI
|
|---|
| 53 |
|
|---|
| 54 | ;DEBUG_PRINT_DRIVE_AND_FUNCTION
|
|---|
| 55 | call RamVars_GetSegmentToDS
|
|---|
| 56 | call DriveXlate_WhenEnteringInt13h
|
|---|
| 57 | call RamVars_IsFunctionHandledByThisBIOS
|
|---|
| 58 | jnc SHORT Int13h_DirectCallToAnotherBios
|
|---|
| 59 | ;DEBUG_PRINT_DRIVE_AND_FUNCTION
|
|---|
| 60 |
|
|---|
| 61 | ; Jump to correct BIOS function
|
|---|
| 62 | cmp ah, 25h ; Valid BIOS function?
|
|---|
| 63 | ja SHORT Int13h_UnsupportedFunction
|
|---|
| 64 | mov di, ax
|
|---|
| 65 | eSHR_IM di, 7 ; Shift function to DI...
|
|---|
| 66 | and di, BYTE 7Eh ; ...and prepare for word lookup
|
|---|
| 67 | jmp [cs:di+g_rgw13hFuncJump] ; Jump to BIOS function
|
|---|
| 68 |
|
|---|
| 69 |
|
|---|
| 70 | ;--------------------------------------------------------------------
|
|---|
| 71 | ; Directs call to another INT13h function whose pointer is
|
|---|
| 72 | ; stored to RAMVARS.
|
|---|
| 73 | ;
|
|---|
| 74 | ; Int13h_DirectCallToAnotherBios
|
|---|
| 75 | ; Parameters:
|
|---|
| 76 | ; AH: Bios function
|
|---|
| 77 | ; DL: Drive number
|
|---|
| 78 | ; DS: RAMVARS segment
|
|---|
| 79 | ; DI: Corrupted
|
|---|
| 80 | ; Stack from top to down:
|
|---|
| 81 | ; Original DI
|
|---|
| 82 | ; Original DS
|
|---|
| 83 | ; Returns:
|
|---|
| 84 | ; Depends on function
|
|---|
| 85 | ; Corrupts registers:
|
|---|
| 86 | ; Flags
|
|---|
| 87 | ;--------------------------------------------------------------------
|
|---|
| 88 | ALIGN JUMP_ALIGN
|
|---|
| 89 | Int13h_UnsupportedFunction:
|
|---|
| 90 | Int13h_DirectCallToAnotherBios:
|
|---|
| 91 | ; Temporarily store original DI and DS from stack to RAMVARS
|
|---|
| 92 | pop WORD [RAMVARS.wI13hDI]
|
|---|
| 93 | pop WORD [RAMVARS.wI13hDS]
|
|---|
| 94 |
|
|---|
| 95 | ; Special return processing required if target function
|
|---|
| 96 | ; returns something in DL
|
|---|
| 97 | mov di, Int13h_ReturnFromAnotherBiosWithoutSwappingDrives
|
|---|
| 98 | call DriveXlate_DoesFunctionReturnSomethingInDL
|
|---|
| 99 | jc SHORT .PushIretAddress
|
|---|
| 100 | add di, BYTE Int13h_ReturnFromAnotherBios - Int13h_ReturnFromAnotherBiosWithoutSwappingDrives
|
|---|
| 101 | .PushIretAddress:
|
|---|
| 102 | pushf ; Push FLAGS to simulate INT
|
|---|
| 103 | push cs ; Push return segment
|
|---|
| 104 | push di ; Push return offset
|
|---|
| 105 |
|
|---|
| 106 | ; "Return" to another INT 13h with original DI and DS
|
|---|
| 107 | push WORD [RAMVARS.fpOldI13h+2] ; Segment
|
|---|
| 108 | push WORD [RAMVARS.fpOldI13h] ; Offset
|
|---|
| 109 | lds di, [RAMVARS.dwI13DIDS]
|
|---|
| 110 | cli ; Disable interrupts as INT would
|
|---|
| 111 | retf
|
|---|
| 112 |
|
|---|
| 113 |
|
|---|
| 114 | ;--------------------------------------------------------------------
|
|---|
| 115 | ; Return handlers from another INT 13h BIOS.
|
|---|
| 116 | ;
|
|---|
| 117 | ; Int13h_ReturnFromAnotherBiosWithoutSwappingDrives
|
|---|
| 118 | ; Int13h_ReturnFromAnotherBios
|
|---|
| 119 | ; Parameters:
|
|---|
| 120 | ; AH: Error code
|
|---|
| 121 | ; DL: Drive number (only on Int13h_ReturnFromAnotherBios)
|
|---|
| 122 | ; CF: Error status
|
|---|
| 123 | ; Returns:
|
|---|
| 124 | ; Depends on function
|
|---|
| 125 | ; Corrupts registers:
|
|---|
| 126 | ; Nothing (not even FLAGS)
|
|---|
| 127 | ;--------------------------------------------------------------------
|
|---|
| 128 | ALIGN JUMP_ALIGN
|
|---|
| 129 | Int13h_ReturnFromAnotherBiosWithoutSwappingDrives:
|
|---|
| 130 | push ds
|
|---|
| 131 | push di
|
|---|
| 132 | pushf ; Store return flags
|
|---|
| 133 | call RamVars_GetSegmentToDS
|
|---|
| 134 | dec BYTE [RAMVARS.xlateVars+XLATEVARS.bRecurCnt]
|
|---|
| 135 | jmp SHORT Int13h_Leave
|
|---|
| 136 | ALIGN JUMP_ALIGN
|
|---|
| 137 | Int13h_ReturnFromAnotherBios:
|
|---|
| 138 | push ds
|
|---|
| 139 | push di
|
|---|
| 140 | pushf ; Store return flags
|
|---|
| 141 | call RamVars_GetSegmentToDS
|
|---|
| 142 | call DriveXlate_WhenLeavingInt13h
|
|---|
| 143 | jmp SHORT Int13h_Leave
|
|---|
| 144 |
|
|---|
| 145 |
|
|---|
| 146 | ;--------------------------------------------------------------------
|
|---|
| 147 | ; Returns from any BIOS function implemented by this BIOS.
|
|---|
| 148 | ;
|
|---|
| 149 | ; Int13h_ReturnWithoutSwappingDrives
|
|---|
| 150 | ; Int13h_StoreErrorCodeToBDAandPopDSDIandReturn
|
|---|
| 151 | ; Int13h_StoreErrorCodeToBDAandPopXRegsAndReturn
|
|---|
| 152 | ; Int13h_PopXRegsAndReturn
|
|---|
| 153 | ; Int13h_PopDiDsAndReturn
|
|---|
| 154 | ; Parameters:
|
|---|
| 155 | ; DL: Drive number (not Int13h_ReturnWithoutSwappingDrives)
|
|---|
| 156 | ; DS: RAMVARS segment
|
|---|
| 157 | ; Returns:
|
|---|
| 158 | ; Depends on function
|
|---|
| 159 | ; Corrupts registers:
|
|---|
| 160 | ; Nothing (not even FLAGS)
|
|---|
| 161 | ;--------------------------------------------------------------------
|
|---|
| 162 | ALIGN JUMP_ALIGN
|
|---|
| 163 | Int13h_ReturnWithoutSwappingDrives:
|
|---|
| 164 | 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
|
|---|
| 177 | ALIGN JUMP_ALIGN
|
|---|
| 178 | Int13h_PopXRegsAndReturn:
|
|---|
| 179 | pop bx ; Pop old AX to BX
|
|---|
| 180 | mov al, bl ; Restore AL
|
|---|
| 181 | pop bx
|
|---|
| 182 | pop cx
|
|---|
| 183 | pop dx
|
|---|
| 184 | ALIGN JUMP_ALIGN
|
|---|
| 185 | Int13h_PopDiDsAndReturn:
|
|---|
| 186 | pushf
|
|---|
| 187 | call DriveXlate_WhenLeavingInt13h
|
|---|
| 188 | Int13h_Leave:
|
|---|
| 189 | popf
|
|---|
| 190 | pop di
|
|---|
| 191 | pop ds
|
|---|
| 192 | retf 2
|
|---|
| 193 |
|
|---|
| 194 |
|
|---|
| 195 | ; Jump table for correct BIOS function
|
|---|
| 196 | ALIGN WORD_ALIGN
|
|---|
| 197 | g_rgw13hFuncJump:
|
|---|
| 198 | dw AH0h_HandlerForDiskControllerReset ; 00h, Disk Controller Reset (All)
|
|---|
| 199 | dw AH1h_HandlerForReadDiskStatus ; 01h, Read Disk Status (All)
|
|---|
| 200 | dw AH2h_HandlerForReadDiskSectors ; 02h, Read Disk Sectors (All)
|
|---|
| 201 | dw AH3h_HandlerForWriteDiskSectors ; 03h, Write Disk Sectors (All)
|
|---|
| 202 | dw AH4h_HandlerForVerifyDiskSectors ; 04h, Verify Disk Sectors (All)
|
|---|
| 203 | dw AH5h_HandlerForFormatDiskTrack ; 05h, Format Disk Track (XT, AT, EISA)
|
|---|
| 204 | dw Int13h_UnsupportedFunction ; 06h, Format Disk Track with Bad Sectors (XT)
|
|---|
| 205 | dw Int13h_UnsupportedFunction ; 07h, Format Multiple Cylinders (XT)
|
|---|
| 206 | dw AH8h_HandlerForReadDiskDriveParameters ; 08h, Read Disk Drive Parameters (All)
|
|---|
| 207 | dw AH9h_HandlerForInitializeDriveParameters ; 09h, Initialize Drive Parameters (All)
|
|---|
| 208 | dw Int13h_UnsupportedFunction ; 0Ah, Read Disk Sectors with ECC (XT, AT, EISA)
|
|---|
| 209 | dw Int13h_UnsupportedFunction ; 0Bh, Write Disk Sectors with ECC (XT, AT, EISA)
|
|---|
| 210 | dw AHCh_HandlerForSeek ; 0Ch, Seek (All)
|
|---|
| 211 | dw AHDh_HandlerForResetHardDisk ; 0Dh, Alternate Disk Reset (All)
|
|---|
| 212 | dw Int13h_UnsupportedFunction ; 0Eh, Read Sector Buffer (XT, PS/1), ESDI Undocumented Diagnostic (PS/2)
|
|---|
| 213 | dw Int13h_UnsupportedFunction ; 0Fh, Write Sector Buffer (XT, PS/1), ESDI Undocumented Diagnostic (PS/2)
|
|---|
| 214 | dw AH10h_HandlerForCheckDriveReady ; 10h, Check Drive Ready (All)
|
|---|
| 215 | dw AH11h_HandlerForRecalibrate ; 11h, Recalibrate (All)
|
|---|
| 216 | dw Int13h_UnsupportedFunction ; 12h, Controller RAM Diagnostic (XT)
|
|---|
| 217 | dw Int13h_UnsupportedFunction ; 13h, Drive Diagnostic (XT)
|
|---|
| 218 | dw AH14h_HandlerForControllerInternalDiagnostic ; 14h, Controller Internal Diagnostic (All)
|
|---|
| 219 | dw AH15h_HandlerForReadDiskDriveSize ; 15h, Read Disk Drive Size (AT+)
|
|---|
| 220 | dw Int13h_UnsupportedFunction ; 16h,
|
|---|
| 221 | dw Int13h_UnsupportedFunction ; 17h,
|
|---|
| 222 | dw Int13h_UnsupportedFunction ; 18h,
|
|---|
| 223 | dw Int13h_UnsupportedFunction ; 19h, Park Heads (PS/2)
|
|---|
| 224 | dw Int13h_UnsupportedFunction ; 1Ah, Format ESDI Drive (PS/2)
|
|---|
| 225 | dw Int13h_UnsupportedFunction ; 1Bh, Get ESDI Manufacturing Header (PS/2)
|
|---|
| 226 | dw Int13h_UnsupportedFunction ; 1Ch, ESDI Special Functions (PS/2)
|
|---|
| 227 | dw Int13h_UnsupportedFunction ; 1Dh,
|
|---|
| 228 | dw Int13h_UnsupportedFunction ; 1Eh,
|
|---|
| 229 | dw Int13h_UnsupportedFunction ; 1Fh,
|
|---|
| 230 | dw Int13h_UnsupportedFunction ; 20h,
|
|---|
| 231 | dw Int13h_UnsupportedFunction ; 21h, Read Disk Sectors, Multiple Blocks (PS/1)
|
|---|
| 232 | dw Int13h_UnsupportedFunction ; 22h, Write Disk Sectors, Multiple Blocks (PS/1)
|
|---|
| 233 | dw AH23h_HandlerForSetControllerFeatures ; 23h, Set Controller Features Register (PS/1)
|
|---|
| 234 | dw AH24h_HandlerForSetMultipleBlocks ; 24h, Set Multiple Blocks (PS/1)
|
|---|
| 235 | dw AH25h_HandlerForGetDriveInformation ; 25h, Get Drive Information (PS/1)
|
|---|
| 236 | ; dw Int13h_UnsupportedFunction ; 26h,
|
|---|
| 237 | ; dw Int13h_UnsupportedFunction ; 27h,
|
|---|
| 238 | ; dw Int13h_UnsupportedFunction ; 28h,
|
|---|
| 239 | ; dw Int13h_UnsupportedFunction ; 29h,
|
|---|
| 240 | ; dw Int13h_UnsupportedFunction ; 2Ah,
|
|---|
| 241 | ; dw Int13h_UnsupportedFunction ; 2Bh,
|
|---|
| 242 | ; dw Int13h_UnsupportedFunction ; 2Ch,
|
|---|
| 243 | ; dw Int13h_UnsupportedFunction ; 2Dh,
|
|---|
| 244 | ; dw Int13h_UnsupportedFunction ; 2Eh,
|
|---|
| 245 | ; dw Int13h_UnsupportedFunction ; 2Fh,
|
|---|
| 246 | ; dw Int13h_UnsupportedFunction ; 30h,
|
|---|
| 247 | ; dw Int13h_UnsupportedFunction ; 31h,
|
|---|
| 248 | ; dw Int13h_UnsupportedFunction ; 32h,
|
|---|
| 249 | ; dw Int13h_UnsupportedFunction ; 33h,
|
|---|
| 250 | ; dw Int13h_UnsupportedFunction ; 34h,
|
|---|
| 251 | ; dw Int13h_UnsupportedFunction ; 35h,
|
|---|
| 252 | ; dw Int13h_UnsupportedFunction ; 36h,
|
|---|
| 253 | ; dw Int13h_UnsupportedFunction ; 37h,
|
|---|
| 254 | ; dw Int13h_UnsupportedFunction ; 38h,
|
|---|
| 255 | ; dw Int13h_UnsupportedFunction ; 39h,
|
|---|
| 256 | ; dw Int13h_UnsupportedFunction ; 3Ah,
|
|---|
| 257 | ; dw Int13h_UnsupportedFunction ; 3Bh,
|
|---|
| 258 | ; dw Int13h_UnsupportedFunction ; 3Ch,
|
|---|
| 259 | ; dw Int13h_UnsupportedFunction ; 3Dh,
|
|---|
| 260 | ; dw Int13h_UnsupportedFunction ; 3Eh,
|
|---|
| 261 | ; dw Int13h_UnsupportedFunction ; 3Fh,
|
|---|
| 262 | ; dw Int13h_UnsupportedFunction ; 40h,
|
|---|
| 263 | ; dw Int13h_UnsupportedFunction ; 41h, Check if Extensions Present (EBIOS)
|
|---|
| 264 | ; dw Int13h_UnsupportedFunction ; 42h, Extended Read Sectors (EBIOS)
|
|---|
| 265 | ; dw Int13h_UnsupportedFunction ; 43h, Extended Write Sectors (EBIOS)
|
|---|
| 266 | ; dw Int13h_UnsupportedFunction ; 44h, Extended Verify Sectors (EBIOS)
|
|---|
| 267 | ; dw Int13h_UnsupportedFunction ; 45h, Lock and Unlock Drive (EBIOS)
|
|---|
| 268 | ; dw Int13h_UnsupportedFunction ; 46h, Eject Media Request (EBIOS)
|
|---|
| 269 | ; dw Int13h_UnsupportedFunction ; 47h, Extended Seek (EBIOS)
|
|---|
| 270 | ; dw Int13h_UnsupportedFunction ; 48h, Get Extended Drive Parameters (EBIOS)
|
|---|
| 271 | ; dw Int13h_UnsupportedFunction ; 49h, Get Extended Disk Change Status (EBIOS)
|
|---|
| 272 | ; dw Int13h_UnsupportedFunction ; 4Ah, Initiate Disk Emulation (Bootable CD-ROM)
|
|---|
| 273 | ; dw Int13h_UnsupportedFunction ; 4Bh, Terminate Disk Emulation (Bootable CD-ROM)
|
|---|
| 274 | ; dw Int13h_UnsupportedFunction ; 4Ch, Initiate Disk Emulation and Boot (Bootable CD-ROM)
|
|---|
| 275 | ; dw Int13h_UnsupportedFunction ; 4Dh, Return Boot Catalog (Bootable CD-ROM)
|
|---|
| 276 | ; dw Int13h_UnsupportedFunction ; 4Eh, Set Hardware Configuration (EBIOS)
|
|---|
