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Last change
on this file since 305 was
305,
checked in by aitotat@…, 12 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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