| 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 | mov al, 1 ; Read 1 sector |
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| 25 | call Prepare_BufferToESSIforOldInt13hTransfer |
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| 26 | %ifdef USE_186 |
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| 27 | push Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH |
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| 28 | ; Fall to AH25h_GetDriveInformationToBufferInESSI |
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| 29 | %else |
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| 30 | call AH25h_GetDriveInformationToBufferInESSI |
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| 31 | jmp Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH |
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| 32 | %endif |
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| 33 | |
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| 34 | |
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| 35 | ;-------------------------------------------------------------------- |
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| 36 | ; AH25h_GetDriveInformationToBufferInESSI |
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| 37 | ; Parameters: |
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| 38 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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| 39 | ; ES:SI: Ptr to buffer to receive 512-byte drive information |
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| 40 | ; Returns with INTPACK: |
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| 41 | ; AH: Int 13h return status |
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| 42 | ; CF: 0 if succesfull, 1 if error |
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| 43 | ; Corrupts registers: |
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| 44 | ; AL, BX, CX, DX |
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| 45 | ;-------------------------------------------------------------------- |
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| 46 | ;ALIGN JUMP_ALIGN |
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| 47 | AH25h_GetDriveInformationToBufferInESSI: |
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| 48 | push es |
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| 49 | push bp |
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| 50 | push di |
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| 51 | push si |
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| 52 | |
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| 53 | call AccessDPT_GetDriveSelectByteToAL |
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| 54 | mov bh, al |
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| 55 | eMOVZX ax, BYTE [di+DPT.bIdevarsOffset] |
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| 56 | xchg bp, ax |
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| 57 | call Device_IdentifyToBufferInESSIwithDriveSelectByteInBH |
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| 58 | |
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| 59 | pop si |
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| 60 | pop di |
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| 61 | pop bp |
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| 62 | pop es |
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| 63 | ret |
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