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Last change
on this file since 318 was 305, checked in by aitotat@…, 13 years ago |
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Changes to XTIDE Universal BIOS:
- AH=25h (Get Drive Information) no longer call Device_IdentifyToBufferInESSIwithDriveSelectByteInBH (stack usage is now much smaller).
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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 al, 1 ; Read 1 sector
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| 25 | call Prepare_BufferToESSIforOldInt13hTransfer
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| 26 | mov ah, COMMAND_IDENTIFY_DEVICE
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| 27 | mov bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_DRQ, FLG_STATUS_DRQ)
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| 28 | %ifdef USE_186
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| 29 | push Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH
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| 30 | jmp Idepack_TranslateOldInt13hAddressAndIssueCommandFromAH
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| 31 | %else
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| 32 | call Idepack_TranslateOldInt13hAddressAndIssueCommandFromAH
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| 33 | jmp Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH
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| 34 | %endif
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