| 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 | %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 successful, 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, [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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