Changeset 498 in xtideuniversalbios


Ignore:
Timestamp:
Jan 4, 2013, 7:22:04 PM (9 years ago)
Author:
aitotat@…
google:author:
aitotat@gmail.com
Message:

Changes to Configurator v2:

  • Auto Configure now detects XT-IDE rev 1 and rev 2 correctly.
File:
1 edited

Legend:

Unmodified
Added
Removed
  • trunk/XTIDE_Universal_BIOS_Configurator_v2/Src/IdeAutodetect.asm

    r497 r498  
    7676    jnc     SHORT .IdeDeviceFound
    7777
    78     ; Try to detect 8-bit XT-IDE rev 1
     78    ; Try to detect 8-bit XT-IDE rev 1 or rev 2.
     79    ; Note that A0<->A3 address swaps Status Register and Alternative
     80    ; Status Register addresses. That is why we need another step
     81    ; to check is this XT-IDE rev 1 or rev 2.
    7982    shr     cx, 1
    8083    call    DetectIdeDeviceFromPortDXwithStatusRegOffsetsInBLandCX
    81     mov     al, DEVICE_8BIT_XTIDE_REV1
    82     jnc     SHORT .IdeDeviceFound
    83 
    84     ; Try to detect 8-bit XT-IDE rev 2 or modded rev 1
    85     ; This doesn't actually work since Status Register and Alternative
    86     ; Status Register swap place!!!
    87     mov     bl, 1110b   ; STATUS_REGISTER_in with A0 and A3 swapped
    88     mov     cl, 0111b
    89     call    DetectIdeDeviceFromPortDXwithStatusRegOffsetsInBLandCX
    90     mov     al, DEVICE_8BIT_XTIDE_REV2
     84    jc      SHORT .SkipRestOfDetection  ; No XT-IDE rev 1 or rev 2 found
     85
     86    ; Now we can be sure that we have XT-IDE rev 1 or rev 2.
     87    ; Rev 2 swaps address lines A0 and A3 thus LBA Low Register
     88    ; moves from offset 3h to offset Ah. There is no Register at
     89    ; offset Ah so if we can write to it and read back, then we
     90    ; must have XT-IDE rev 2 or modded rev 1.
     91    push    dx
     92    add     dx, BYTE 0Ah                ; LBA Low Register for XT-IDE rev 2
     93    mov     al, DEVICE_8BIT_XTIDE_REV2  ; Our test byte
     94    out     dx, al                      ; Output our test byte
     95    JMP_DELAY
     96    in      al, dx                      ; Read back
     97    pop     dx
     98    cmp     al, DEVICE_8BIT_XTIDE_REV2
     99    je      SHORT .IdeDeviceFound
     100    mov     al, DEVICE_8BIT_XTIDE_REV1  ; We must have rev 1
     101    clc
    91102.IdeDeviceFound:
    92103    ret
     
    193204.rgwIdeBasePorts:
    194205    dw      IDE_PORT_TO_START_DETECTION     ; Must be first
    195     ; JR-IDE/ISA (Memory Segment Addresses)
    196     dw      0C000h
    197     dw      0C400h
    198     dw      0C800h
    199     dw      0CC00h
    200     dw      0D000h
    201     dw      0D400h
    202     dw      0D800h
    203     dw      0DC00h
     206    ; Standard IDE
     207    dw      DEVICE_ATA_PRIMARY_PORT
     208    dw      DEVICE_ATA_SECONDARY_PORT
     209    dw      DEVICE_ATA_TERTIARY_PORT
     210    dw      DEVICE_ATA_QUATERNARY_PORT
    204211    ; 8-bit Devices
    205212    dw      200h
     
    219226    dw      3C0h
    220227    dw      3E0h
    221     ; Standard IDE
    222     dw      DEVICE_ATA_PRIMARY_PORT
    223     dw      DEVICE_ATA_SECONDARY_PORT
    224     dw      DEVICE_ATA_TERTIARY_PORT
     228    ; JR-IDE/ISA (Memory Segment Addresses)
     229    dw      0C000h
     230    dw      0C400h
     231    dw      0C800h
     232    dw      0CC00h
     233    dw      0D000h
     234    dw      0D400h
     235    dw      0D800h
    225236.wLastIdePort:
    226     dw      DEVICE_ATA_QUATERNARY_PORT
     237    dw      0DC00h
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