source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH1h_HStatus.asm@ 314

Last change on this file since 314 was 294, checked in by krille_n_@…, 13 years ago

Commit 2/2 (BIOS):

  • Fixed a bug in AH1h_HStatus.asm.
  • Minor optimizations.
  • Fixed spelling and did some cleaning.
File size: 1.2 KB
Line 
1; Project name : XTIDE Universal BIOS
2; Description : Int 13h function AH=1h, Read Disk Status.
3
4; Section containing code
5SECTION .text
6
7;--------------------------------------------------------------------
8; Int 13h function AH=1h, Read Disk Status.
9;
10; AH1h_HandlerForReadDiskStatus
11; Parameters:
12; DL: Translated Drive number
13; DS:DI: Ptr to DPT (in RAMVARS segment)
14; SS:BP: Ptr to IDEREGS_AND_INTPACK
15; Returns with INTPACK:
16; AH: Int 13h floppy return status
17; CF: 0 if AH = RET_HD_SUCCESS, 1 otherwise (error)
18;--------------------------------------------------------------------
19ALIGN JUMP_ALIGN
20AH1h_HandlerForReadDiskStatus:
21 LOAD_BDA_SEGMENT_TO ds, ax, !
22
23%ifdef MODULE_SERIAL_FLOPPY
24 test dl, dl
25 js .HardDisk
26 mov ah, [BDA.bFDRetST] ; Unlike for hard disks below, floppy version does not clear the status
27 jmp .done
28.HardDisk:
29%endif
30
31 xchg ah, [BDA.bHDLastSt] ; Load and clear last error (AH is cleared with the LOAD_BDA_SEGMENT_TO above)
32
33.done:
34%ifndef USE_186
35 call Int13h_SetErrorCodeToIntpackInSSBPfromAH
36 jmp Int13h_ReturnFromHandlerWithoutStoringErrorCode
37%else
38 push Int13h_ReturnFromHandlerWithoutStoringErrorCode
39 jmp Int13h_SetErrorCodeToIntpackInSSBPfromAH
40%endif
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