Ignore:
Timestamp:
Mar 19, 2011, 8:09:41 PM (13 years ago)
Author:
aitotat
google:author:
aitotat
Message:

Changes to XTIDE Universal BIOS:

  • INT 13h optimizations to save almost 100 bytes.
File:
1 edited

Legend:

Unmodified
Added
Removed

  • trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/Common/HError.asm

    r86 r148  
    1 ; Project name  :   IDE BIOS
     1; Project name  :   XTIDE Universal BIOS
    22; Description   :   Error checking functions for BIOS Hard disk functions.
    33
    … …  
    66
    77;--------------------------------------------------------------------
    8 ; HError_ProcessTimeoutAfterPollingBSYandSomeOtherStatusBit
    9 ; HError_ProcessErrorsAfterPollingBSY
     8; HError_GetErrorCodeToAHforTimeoutWhenPolling
    109;   Parameters:
    1110;       DS:     RAMVARS segment
    … …  
    1817;--------------------------------------------------------------------
    1918ALIGN JUMP_ALIGN
    20 HError_ProcessTimeoutAfterPollingBSYandSomeOtherStatusBit:
    21     call    HError_GetStatusAndErrorRegistersToAXandStoreThemToBDA
    22     call    GetBiosErrorCodeToAHfromStatusAndErrorRegistersInAX
     19HError_GetErrorCodeToAHforTimeoutWhenPolling:
     20    call    HError_GetErrorCodeToAHafterPolling
    2321    jc      SHORT .ReturnErrorCodeInAH
    2422    mov     ah, RET_HD_TIMEOUT          ; Force timeout since no actual error...
    … …  
    2826
    2927
     28;--------------------------------------------------------------------
     29; HError_GetErrorCodeToAHafterPolling
     30;   Parameters:
     31;       DS:     RAMVARS segment
     32;   Returns:
     33;       AH:     BIOS error code
     34;       CF:     Set if error
     35;               Cleared if no error
     36;   Corrupts registers:
     37;       AL
     38;--------------------------------------------------------------------
    3039ALIGN JUMP_ALIGN
    31 HError_ProcessErrorsAfterPollingBSY:
     40HError_GetErrorCodeToAHafterPolling:
    3241%ifndef USE_186
    3342    call    HError_GetStatusAndErrorRegistersToAXandStoreThemToBDA
    … …  
    131140    db  RET_HD_BADSECTOR    ; Bit7=BBK, Bad Block Detected
    132141    db  RET_HD_STATUSERR    ; When Error Register is zero
     142
     143
     144;--------------------------------------------------------------------
     145; HError_SetErrorCodeToBdaAndToIntpackInSSBPfromAH
     146; HError_SetErrorCodeToIntpackInSSBPfromAH
     147;   Parameters:
     148;       AH:     BIOS error code (00h = no error)
     149;       SS:BP:  Ptr to INTPACK
     150;   Returns:
     151;       SS:BP:  Ptr to INTPACK with error condition set
     152;   Corrupts registers:
     153;       DS, DI
     154;--------------------------------------------------------------------
     155ALIGN JUMP_ALIGN
     156HError_SetErrorCodeToBdaAndToIntpackInSSBPfromAH:
     157    ; Store error code to BDA
     158    LOAD_BDA_SEGMENT_TO ds, di
     159    mov     [BDA.bHDLastSt], ah
     160
     161    ; Store error code to INTPACK
     162HError_SetErrorCodeToIntpackInSSBPfromAH:
     163    mov     [bp+INTPACK.ah], ah
     164    test    ah, ah
     165    jnz     SHORT .SetCFtoIntpack
     166    and     BYTE [bp+INTPACK.flags], ~FLG_FLAGS_CF
     167    ret
     168.SetCFtoIntpack:
     169    or      BYTE [bp+INTPACK.flags], FLG_FLAGS_CF
     170    ret
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