| [88] | 1 | ; Project name : XTIDE Universal BIOS |
|---|
| [3] | 2 | ; Description : Int 13h function AH=25h, Get Drive Information. |
|---|
| 3 | |
|---|
| 4 | ; Section containing code |
|---|
| 5 | SECTION .text |
|---|
| 6 | |
|---|
| 7 | ;-------------------------------------------------------------------- |
|---|
| 8 | ; Int 13h function AH=25h, Get Drive Information. |
|---|
| 9 | ; |
|---|
| 10 | ; AH25h_HandlerForGetDriveInformation |
|---|
| 11 | ; Parameters: |
|---|
| [148] | 12 | ; ES: Same as in INTPACK |
|---|
| 13 | ; DL: Translated Drive number |
|---|
| 14 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
|---|
| [150] | 15 | ; SS:BP: Ptr to IDEPACK |
|---|
| 16 | ; Parameters on INTPACK: |
|---|
| [3] | 17 | ; ES:BX: Ptr to buffer to receive 512-byte drive information |
|---|
| [150] | 18 | ; Returns with INTPACK: |
|---|
| [3] | 19 | ; AH: Int 13h return status |
|---|
| 20 | ; CF: 0 if succesfull, 1 if error |
|---|
| 21 | ;-------------------------------------------------------------------- |
|---|
| 22 | ALIGN JUMP_ALIGN |
|---|
| 23 | AH25h_HandlerForGetDriveInformation: |
|---|
| [221] | 24 | mov al, 1 ; Read 1 sector |
|---|
| 25 | call Prepare_BufferToESSIforOldInt13hTransfer |
|---|
| [165] | 26 | %ifdef USE_186 |
|---|
| 27 | push Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH |
|---|
| [167] | 28 | ; Fall to AH25h_GetDriveInformationToBufferInESSI |
|---|
| [165] | 29 | %else |
|---|
| [167] | 30 | call AH25h_GetDriveInformationToBufferInESSI |
|---|
| [165] | 31 | jmp Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH |
|---|
| 32 | %endif |
|---|
| 33 | |
|---|
| 34 | |
|---|
| 35 | ;-------------------------------------------------------------------- |
|---|
| [167] | 36 | ; AH25h_GetDriveInformationToBufferInESSI |
|---|
| [165] | 37 | ; Parameters: |
|---|
| 38 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
|---|
| 39 | ; ES:SI: Ptr to buffer to receive 512-byte drive information |
|---|
| 40 | ; Returns with INTPACK: |
|---|
| 41 | ; AH: Int 13h return status |
|---|
| 42 | ; CF: 0 if succesfull, 1 if error |
|---|
| 43 | ; Corrupts registers: |
|---|
| 44 | ; AL, BX, CX, DX |
|---|
| 45 | ;-------------------------------------------------------------------- |
|---|
| [170] | 46 | ;ALIGN JUMP_ALIGN |
|---|
| [167] | 47 | AH25h_GetDriveInformationToBufferInESSI: |
|---|
| [165] | 48 | push es |
|---|
| [150] | 49 | push bp |
|---|
| [165] | 50 | push di |
|---|
| 51 | push si |
|---|
| [3] | 52 | |
|---|
| [150] | 53 | call AccessDPT_GetDriveSelectByteToAL |
|---|
| 54 | mov bh, al |
|---|
| 55 | eMOVZX ax, BYTE [di+DPT.bIdevarsOffset] |
|---|
| 56 | xchg bp, ax |
|---|
| 57 | call Device_IdentifyToBufferInESSIwithDriveSelectByteInBH |
|---|
| 58 | |
|---|
| [165] | 59 | pop si |
|---|
| 60 | pop di |
|---|
| [150] | 61 | pop bp |
|---|
| [165] | 62 | pop es |
|---|
| 63 | ret |
|---|
