Ignore:
Timestamp:
Oct 10, 2012, 6:22:23 PM (13 years ago)
Author:
aitotat@…
google:author:
aitotat@gmail.com
Message:

Changes to XTIDE Universal BIOS:

  • Large changes to prepare full XT-CF support (DMA not yet implemented and memory mapped transfers are not working).
File:
1 edited

Legend:

Unmodified
Added
Removed

  • trunk/XTIDE_Universal_BIOS/Src/VariablesAndDPTs/BootVars.asm

    r397 r473  
    3232;--------------------------------------------------------------------
    3333BootVars_Initialize:
     34%ifdef MODULE_8BIT_IDE
     35    mov     WORD [es:BOOTVARS.wNextXTCFportToScan], XTCF_BASE_PORT_1
     36%endif
     37
    3438    ; Clear to zero
    3539    mov     al, DRVDETECTINFO_size
    … …  
    6670
    6771%endif ; MODULE_HOTKEYS
     72
     73
     74%ifdef MODULE_8BIT_IDE
     75;--------------------------------------------------------------------
     76; BootVars_GetNextXTCFportToDetectToDX
     77;   Parameters:
     78;       ES:     BDA Segment
     79;   Returns:
     80;       DX:     Next XT-CF port to detect
     81;   Corrupts registers:
     82;       AX
     83;--------------------------------------------------------------------
     84BootVars_GetNextXTCFportToDetectToDX:
     85    mov     dx, [es:BOOTVARS.wNextXTCFportToScan]
     86    test    dl, dl
     87    jz      SHORT .NextOneIs240hor340h
     88    add     WORD [es:BOOTVARS.wNextXTCFportToScan], XTCF_BASE_PORT_3 - XTCF_BASE_PORT_2
     89    ret
     90.NextOneIs240hor340h:
     91    mov     BYTE [es:BOOTVARS.wNextXTCFportToScan], XTCF_BASE_PORT_2 & 0FFh ; 40h
     92    ret     
     93%endif ; MODULE_8BIT_IDE
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