Last change
on this file since 158 was
150,
checked in by aitotat, 13 years ago
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Changes to XTIDE Universal BIOS:
- Redesigned Disk Parameter Tables.
- Code generalizations for supporting non-IDE devices in the future.
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File size:
1.0 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 succesfull, 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 | push bp |
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25 | |
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26 | mov si, [bp+IDEPACK.intpack+INTPACK.bx] |
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27 | call AccessDPT_GetDriveSelectByteToAL |
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28 | mov bh, al |
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29 | eMOVZX ax, BYTE [di+DPT.bIdevarsOffset] |
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30 | xchg bp, ax |
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31 | call Device_IdentifyToBufferInESSIwithDriveSelectByteInBH |
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32 | |
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33 | pop bp |
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34 | jmp Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH |
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