Changeset 474 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Initialization


Ignore:
Timestamp:
Oct 11, 2012, 5:30:15 PM (12 years ago)
Author:
aitotat@…
google:author:
aitotat@gmail.com
Message:

Changes to XTIDE Universal BIOS:

  • Drive detection now displays autodetected XT-CF port and skips slave drives for XT-CF.
  • AH=1Eh no longer tries to disable 8-bit mode for memory mapped and DMA transfer modes.
  • Preparations to implement DMA.
Location:
trunk/XTIDE_Universal_BIOS/Src/Initialization
Files:
2 edited

Legend:

Unmodified
Added
Removed

  • trunk/XTIDE_Universal_BIOS/Src/Initialization/DetectDrives.asm

    r473 r474  
    153153;--------------------------------------------------------------------
    154154StartDetectionWithDriveSelectByteInBHandStringInCX:
    155     call    DetectPrint_StartDetectWithMasterOrSlaveStringInCXandIdeVarsInCSBP
    156 %ifdef MODULE_HOTKEYS
    157     call    HotkeyBar_UpdateDuringDriveDetection
    158 %endif
    159     ; Fall to .AutodetectXTCFport or .ReadAtaInfoFromHardDisk
    160 
    161 
     155    ; Autodetect port for XT-CF
    162156%ifdef MODULE_8BIT_IDE
    163 ;--------------------------------------------------------------------
    164 ; .AutodetectXTCFport
    165 ;   Parameters:
    166 ;       BH:     Drive Select byte for Drive and Head Register
    167 ;       CS:BP:  Ptr to IDEVARS for the drive
    168 ;       DS:     RAMVARS segment
    169 ;       ES:     Zero (BDA segment)
    170 ;   Returns:
    171 ;       DX:     Autodetected port (for devices that support autodetection)
    172 ;   Corrupts registers:
    173 ;       AX
    174 ;--------------------------------------------------------------------
    175 .AutodetectXTCFport:
    176     ; Detect port for XTCF
    177157    call    DetectDrives_DoesIdevarsInCSBPbelongToXTCF
    178158    jne     SHORT .SkipXTCFportDetection
     159
     160    ; XT-CF do not support slave drives so skip detection
     161    test    bh, FLG_DRVNHEAD_DRV
     162    jnz     SHORT NoSlaveDriveAvailable
    179163
    180164    ; XT-CF do not support slave drives so we can safely update port
    … …  
    183167    call    BootVars_GetNextXTCFportToDetectToDX
    184168    cmp     dx, XTCF_BASE_PORT_4
    185     ja      SHORT DetectDrives_DriveNotFound    ; XT-CF not found from any port
     169    ja      SHORT .SkipXTCFportDetection        ; XT-CF not found from any port
    186170
    187171    call    AH1Eh_DetectXTCFwithBasePortInDX
    188172    jc      SHORT .DetectNextPort               ; XT-CF not found from this port
     173
     174    ; We now have autodetected port in DX
     175    push    dx
     176    xchg    ax, dx                              ; Port to print in AX
     177    call    DetectPrint_StartDetectWithAutodetectedBasePortInAXandIdeVarsInCSBP
     178    jmp     SHORT .DriveDetectionStringPrintedOnScreen
     179
     180    ; Print detect string for devices that do not support autodetection     
    189181.SkipXTCFportDetection:
     182    push    dx
     183%endif ; MODULE_8BIT_IDE
     184
     185    call    DetectPrint_StartDetectWithMasterOrSlaveStringInCXandIdeVarsInCSBP
     186.DriveDetectionStringPrintedOnScreen:
     187%ifdef MODULE_HOTKEYS
     188    call    HotkeyBar_UpdateDuringDriveDetection
     189%endif
     190%ifdef MODULE_8BIT_IDE
     191    pop     dx
     192%endif
    190193    ; Fall to .ReadAtaInfoFromHardDisk
    191 %endif ; MODULE_8BIT_IDE
    192194
    193195
    … …  
    284286    cmp     al, DEVICE_8BIT_XTCF_MEMMAP
    285287.DeviceIsXTCF:
     288NoSlaveDriveAvailable:
    286289    ret
    287290%endif ; MODULE_8BIT_IDE

  • trunk/XTIDE_Universal_BIOS/Src/Initialization/DetectPrint.asm

    r473 r474  
    7575;       CS:CX:  Ptr to "Master" or "Slave" string
    7676;       CS:BP:  Ptr to IDEVARS
    77 ;       SI:     Ptr to template string
    78 ;   Returns:
    79 ;       Nothing
    80 ;   Corrupts registers:
    81 ;       AX, SI, DI, CX, DX
     77;   Returns:
     78;       Nothing
     79;   Corrupts registers:
     80;       AX, CX, DX, SI, DI
    8281;--------------------------------------------------------------------
    8382DetectPrint_StartDetectWithMasterOrSlaveStringInCXandIdeVarsInCSBP:
    8483    mov     ax, [cs:bp+IDEVARS.wBasePort]   ; for IDE: AX=port address, DH=.bDevice
     84    ; Fall to DetectPrint_StartDetectWithAutodetectedBasePortInAX
     85
     86;--------------------------------------------------------------------
     87; DetectPrint_StartDetectWithAutodetectedBasePortInAXandIdeVarsInCSBP
     88;   Parameters:
     89;       AX:     Base Port Address
     90;       CS:CX:  Ptr to "Master" or "Slave" string
     91;       CS:BP:  Ptr to IDEVARS
     92;   Returns:
     93;       Nothing
     94;   Corrupts registers:
     95;       AX, CX, DX, SI, DI
     96;--------------------------------------------------------------------   
     97DetectPrint_StartDetectWithAutodetectedBasePortInAXandIdeVarsInCSBP:
    8598    mov     dx, [cs:bp+IDEVARS.bDevice-1]   ; for Serial: AL=port address>>2, AH=baud rate
    8699                                            ;             DL=COM number character, DH=.bDevice
    87 
    88100    push    bp                              ; setup stack for call to
    89101    mov     bp, sp                          ; BootMenuPrint_FormatCSSIfromParamsInSSBP
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