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Last change
on this file since 356 was 322, checked in by krille_n_@…, 13 years ago |
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Changes to XTIDE Universal BIOS:
- Commented out the FS and GS segment registers from INTPACK since we never touch them anyway.
- Minor changes to improve speed in the Int13h handler.
- Changed Prepare_ByValidatingSectorsInALforOldInt13h so it really doesn't corrupt anything.
- Changed the makefile so 'make strings' now works even if StringsCompressed.asm is missing or empty.
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File size:
1.2 KB
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| 1 | ; Project name : XTIDE Universal BIOS
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| 2 | ; Description : Int 13h function AH=25h, Get Drive Information.
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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=25h, Get Drive Information.
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| 9 | ;
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| 10 | ; AH25h_HandlerForGetDriveInformation
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| 11 | ; Parameters:
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| 12 | ; 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 IDEPACK
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| 16 | ; Parameters on INTPACK:
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| 17 | ; ES:BX: Ptr to buffer to receive 512-byte drive information
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| 18 | ; Returns with INTPACK:
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| 19 | ; AH: Int 13h return status
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| 20 | ; CF: 0 if successful, 1 if error
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| 21 | ;--------------------------------------------------------------------
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| 22 | ALIGN JUMP_ALIGN
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| 23 | AH25h_HandlerForGetDriveInformation:
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| 24 | mov ax, (COMMAND_IDENTIFY_DEVICE << 8 | 1) ; Read 1 sector
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| 25 | call Prepare_BufferToESSIforOldInt13hTransfer ; Preserves AX
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| 26 | mov bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_DRQ, FLG_STATUS_DRQ)
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| 27 | %ifdef USE_186
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| 28 | push Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH
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| 29 | jmp Idepack_TranslateOldInt13hAddressAndIssueCommandFromAH
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| 30 | %else
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| 31 | call Idepack_TranslateOldInt13hAddressAndIssueCommandFromAH
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| 32 | jmp Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH
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| 33 | %endif
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