|
Last change
on this file since 39 was 35, checked in by Tomi Tilli, 14 years ago |
|
Cleaned recent changes a bit to save few bytes.
|
|
File size:
1019 bytes
|
| Line | |
|---|
| 1 | ; File name : AH1h_HStatus.asm
|
|---|
| 2 | ; Project name : IDE BIOS
|
|---|
| 3 | ; Created date : 27.9.2007
|
|---|
| 4 | ; Last update : 24.8.2010
|
|---|
| 5 | ; Author : Tomi Tilli
|
|---|
| 6 | ; Description : Int 13h function AH=1h, Read Disk Status.
|
|---|
| 7 |
|
|---|
| 8 | ; Section containing code
|
|---|
| 9 | SECTION .text
|
|---|
| 10 |
|
|---|
| 11 | ;--------------------------------------------------------------------
|
|---|
| 12 | ; Int 13h function AH=1h, Read Disk Status.
|
|---|
| 13 | ;
|
|---|
| 14 | ; AH1h_HandlerForReadDiskStatus
|
|---|
| 15 | ; Parameters:
|
|---|
| 16 | ; AH: Bios function 1h
|
|---|
| 17 | ; DL: Drive number (8xh)
|
|---|
| 18 | ; Parameters loaded by Int13h_Jump:
|
|---|
| 19 | ; DS: RAMVARS segment
|
|---|
| 20 | ; Returns:
|
|---|
| 21 | ; AH: Int 13h floppy return status
|
|---|
| 22 | ; CF: 0 if AH = RET_HD_SUCCESS, 1 otherwise (error)
|
|---|
| 23 | ; IF: 1
|
|---|
| 24 | ; Corrupts registers:
|
|---|
| 25 | ; Flags
|
|---|
| 26 | ;--------------------------------------------------------------------
|
|---|
| 27 | ALIGN JUMP_ALIGN
|
|---|
| 28 | AH1h_HandlerForReadDiskStatus:
|
|---|
| 29 | push ds
|
|---|
| 30 |
|
|---|
| 31 | LOAD_BDA_SEGMENT_TO ds, di
|
|---|
| 32 | xor ah, ah ; Zero AH
|
|---|
| 33 | cmp ah, [BDA.bHDLastSt] ; Set CF if error code is non-zero
|
|---|
| 34 | mov ah, [BDA.bHDLastSt] ; Last error to AH
|
|---|
| 35 |
|
|---|
| 36 | pop ds
|
|---|
| 37 | jmp Int13h_PopDiDsAndReturn
|
|---|
Note:
See
TracBrowser
for help on using the repository browser.
