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Rev 5363 Rev 5544
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endp
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endp
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align 4
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proc detect
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           locals
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            last_bus dd ?
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align 4
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           endl
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proc detect
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        mov     esi, msgSearch
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        mov     esi, msgSearch
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        invoke  SysMsgBoardStr
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        xor     eax, eax
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        mov     [bus], eax
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        inc     eax
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        invoke  PciApi          ; get last bus
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        invoke  SysMsgBoardStr
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        cmp     eax, -1
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        je      .error
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        invoke  GetPCIList
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        mov     [last_bus], eax
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  .next_bus:
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        mov     edx, eax
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        and     [devfn], 0
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  .next_dev:
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  .loop:
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        invoke  PciRead16, [bus], [devfn], PCI_header.subclass  ; subclass/vendor
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        mov     ebx, [eax + PCIDEV.class]
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        cmp     ax, 0x0300      ; display controller - vga compatable controller
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        cmp     bx, 0x0300      ; display controller - vga compatible controller
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        je      .found
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        je      .found
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        cmp     ax, 0x0302      ; display controller - 3d controller
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        cmp     bx, 0x0302      ; display controller - 3d controller
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        je      .found
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        cmp     ax, 0x0380      ; display controller - other display controller
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        je      .found
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        je      .found
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  .next:
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        inc     [devfn]
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        cmp     bx, 0x0380      ; display controller - other display controller
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        cmp     [devfn], 256
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        jb      .next_dev
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        je      .found
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        mov     eax, [bus]
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        inc     eax
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        mov     [bus], eax
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  .next:
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        cmp     eax, [last_bus]
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        mov     eax, [eax + PCIDEV.fd]
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        jna     .next_bus
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        cmp     eax, edx
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  .error:
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        jne     .loop
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        mov     esi, msgDone
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        invoke  SysMsgBoardStr
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        or      eax, -1
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        mov     esi, msgFail
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        ret
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        invoke  SysMsgBoardStr
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  .found:
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        xor     eax, eax
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        push    eax edx
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        inc     eax
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        movzx   ebx, [eax + PCIDEV.bus]
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        mov     [bus], ebx
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        ret
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        movzx   ebx, [eax + PCIDEV.devfn]
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        mov     [devfn], ebx
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  .found:
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        invoke  PciRead8, [bus], [devfn], PCI_header00.prog_if
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        invoke  PciRead8, [bus], [devfn], PCI_header00.prog_if
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        test    al, 1 shl 4                             ; got capabilities list?
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        test    al, 100b
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        test    al, 100b
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        jnz     .100b
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        jnz     .100b
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        test    al, 10b
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        test    al, 10b
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        jnz     .010b
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        jnz     .010b
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        test    al, 1b
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        test    al, 1b
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        pop     edx eax
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        jz      .error
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        jz      .next
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  .001b:
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  .001b:
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        mov     [cmd], 001b
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        mov     [cmd], 001b
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        mov     esi, msg1
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        mov     esi, msg1
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        invoke  PciWrite32, [bus], [devfn], edi, eax    ; write AGP cmd
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        invoke  PciWrite32, [bus], [devfn], edi, eax    ; write AGP cmd
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        mov     esi, msgOK
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        mov     esi, msgOK
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        invoke  SysMsgBoardStr
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        invoke  SysMsgBoardStr
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        pop     edx eax
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        ret
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        jmp     .next
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my_service      db 'AGP', 0                             ; max 16 chars include zero
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my_service      db 'AGP', 0                             ; max 16 chars include zero
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msgInit         db 'AGP driver loaded.', 13, 10, 0
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msgInit         db 'AGP driver loaded.', 13, 10, 0
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msgSearch       db 'Searching for AGP card...', 13, 10, 0
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msgSearch       db 'Searching for AGP card...', 13, 10, 0
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msgFail         db 'device not found', 13, 10, 0
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msgDone         db 'Done', 13, 10, 0
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msgOK           db 'AGP device enabled', 13, 10, 0
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msgOK           db 'AGP device enabled', 13, 10, 0
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msgAGP2         db 'AGP2 device found', 13, 10, 0
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msgAGP2         db 'AGP2 device found', 13, 10, 0
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msgAGP3         db 'AGP3 device found', 13, 10, 0
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msgAGP3         db 'AGP3 device found', 13, 10, 0