Changeset 324 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/EBIOS


Ignore:
Timestamp:
Mar 11, 2012, 6:45:03 PM (13 years ago)
Author:
aitotat@…
google:author:
aitotat@gmail.com
Message:

Changes to XTIDE Universal BIOS:

  • Boot Menu now displays correct capacity when using user defined LBA.
File:
1 edited

Legend:

Unmodified
Added
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  • trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/EBIOS/AH48h_GetExtendedDriveParameters.asm

    r294 r324  
    4545    mov     WORD [si+EDRIVE_INFO.wFlags], FLG_DMA_BOUNDARY_ERRORS_HANDLED_BY_BIOS
    4646
    47     push    ds  ; Move CS to DS to avoid segment overrides
    48     push    cs
    49     pop     ds
    50 
    51     ; Limit LBA if necessary
    52     test    BYTE [di+DRVPARAMS.wFlags], FLG_DRVPARAMS_USERLBA
    53     jz      SHORT .StoreTotalSectorsFromBXDXAX
    54     test    bx, bx
    55     jnz     SHORT .LimitTotalSectors
    56     cmp     dx, [di+DRVPARAMS.dwMaximumLBA+2]
    57     jb      SHORT .StoreTotalSectorsFromBXDXAX      ; Real size less than max
    58     ja      SHORT .LimitTotalSectors
    59     cmp     ax, [di+DRVPARAMS.dwMaximumLBA]
    60     jbe     SHORT .StoreTotalSectorsFromBXDXAX      ; Real size less than max
    61 
    62 .LimitTotalSectors:
    63     xor     bx, bx
    64     mov     ax, [di+DRVPARAMS.dwMaximumLBA]
    65     mov     dx, [di+DRVPARAMS.dwMaximumLBA+2]
    66 
    67 .StoreTotalSectorsFromBXDXAX:
    68     pop     ds  ; Restore DS from the change above
     47    ; Store total sector count
    6948    mov     [si+EDRIVE_INFO.qwTotalSectors], ax
    7049    xor     ax, ax                                  ; Return with success
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