[148] | 1 | ; Project name : XTIDE Universal BIOS |
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[3] | 2 | ; Description : Int 13h function AH=3h, Write Disk Sectors. |
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| 3 | |
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| 4 | ; Section containing code |
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| 5 | SECTION .text |
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| 6 | |
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| 7 | ;-------------------------------------------------------------------- |
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| 8 | ; Int 13h function AH=3h, Write Disk Sectors. |
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| 9 | ; |
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| 10 | ; AH3h_HandlerForWriteDiskSectors |
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| 11 | ; Parameters: |
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[148] | 12 | ; AL, CX, DH, ES: Same as in INTPACK |
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| 13 | ; DL: Translated Drive number |
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| 14 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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| 15 | ; SS:BP: Ptr to INTPACK |
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| 16 | ; Parameters on INTPACK in SS:BP: |
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[3] | 17 | ; AL: Number of sectors to write |
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| 18 | ; CH: Cylinder number, bits 7...0 |
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| 19 | ; CL: Bits 7...6: Cylinder number bits 9 and 8 |
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| 20 | ; Bits 5...0: Starting sector number (1...63) |
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| 21 | ; DH: Starting head number (0...255) |
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| 22 | ; ES:BX: Pointer to source data |
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[148] | 23 | ; Returns with INTPACK in SS:BP: |
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[3] | 24 | ; AH: Int 13h/40h floppy return status |
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| 25 | ; CF: 0 if successfull, 1 if error |
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| 26 | ;-------------------------------------------------------------------- |
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| 27 | ALIGN JUMP_ALIGN |
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| 28 | AH3h_HandlerForWriteDiskSectors: |
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| 29 | test al, al ; Invalid sector count? |
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| 30 | jz SHORT AH2h_ZeroCntErr ; If so, return with error |
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| 31 | |
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| 32 | ; Select sector or block mode command |
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| 33 | mov ah, HCMD_WRITE_SECT ; Load sector mode command |
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| 34 | cmp BYTE [di+DPT.bSetBlock], 1 ; Block mode enabled? |
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[148] | 35 | eCMOVA ah, HCMD_WRITE_MUL ; Load block mode command |
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[3] | 36 | |
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| 37 | ; Transfer data |
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| 38 | call HCommand_OutputCountAndLCHSandCommand |
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[148] | 39 | jc SHORT .ReturnWithErrorCodeInAH |
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| 40 | mov bx, [bp+INTPACK.bx] |
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[3] | 41 | call HPIO_WriteBlock ; Write data to IDE-controller |
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[148] | 42 | .ReturnWithErrorCodeInAH: |
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| 43 | jmp Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH |
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