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Last change
on this file since 369 was
369,
checked in by gregli@…, 12 years ago
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Removed align directives for initalization code and added define for align in boot-time calls to the assembly library (defaulting to 1), resulting in a significant savings for the AT and 386 builds. Fixed a bug with switch command line handling in the serial server. Put in CR characters in licesnse.txt, so that it properly displays on Windows. In the configurator, added default values for user supplied CHS and LBA values, defaulting to values within range when those features are enabled. Updated the copyright message in the configurator as the literal word Copyright is important.
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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 | AH25h_HandlerForGetDriveInformation: |
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| 23 | mov ax, (COMMAND_IDENTIFY_DEVICE << 8 | 1) ; Read 1 sector |
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| 24 | call Prepare_BufferToESSIforOldInt13hTransfer ; Preserves AX |
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| 25 | mov bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_DRQ, FLG_STATUS_DRQ) |
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| 26 | %ifdef USE_186 |
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| 27 | push Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH |
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| 28 | jmp Idepack_TranslateOldInt13hAddressAndIssueCommandFromAH |
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| 29 | %else |
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| 30 | call Idepack_TranslateOldInt13hAddressAndIssueCommandFromAH |
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| 31 | jmp Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH |
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| 32 | %endif |
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