oemrpci.as_

AMI 主板的BIOS源码

;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
pci_irq_entry < 00h,     048h,      041h,   1101111010111000b,  042h,   1101111010111000b,  043h,   1101111010111000b,  044h,   1101111010111000b,  1,        0        >

;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; Slot 2      |  Device Location  |        Int A Pin          |        Int B Pin          |        Int C Pin          |        Int D Pin          |                    |
;             +-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; AD#21       | PCI Bus  Dev Num  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Physical  Reserved |
; Device 10   | Number   (Shl 3)  | Reg       Routable to Pin | Reg       Routable Pin    | Reg       Routable Pin    | Reg       Routable Pin    | Slot Num  Byte     |
;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
pci_irq_entry < 00h,     050h,      044h,   1101111010111000b,  041h,   1101111010111000b,  042h,   1101111010111000b,  043h,   1101111010111000b,  2,        0        >

;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; Slot 3      |  Device Location  |        Int A Pin          |        Int B Pin          |        Int C Pin          |        Int D Pin          |                    |
;             +-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; AD#22       | PCI Bus  Dev Num  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Physical  Reserved |
; Device 11   | Number   (Shl 3)  | Reg       Routable to Pin | Reg       Routable Pin    | Reg       Routable Pin    | Reg       Routable Pin    | Slot Num  Byte     |
;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
pci_irq_entry < 00h,     058h,      043h,   1101111010111000b,  044h,   1101111010111000b,  041h,   1101111010111000b,  042h,   1101111010111000b,  3,        0        >

;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; Slot 4      |  Device Location  |        Int A Pin          |        Int B Pin          |        Int C Pin          |        Int D Pin          |                    |
;             +-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; AD#23       | PCI Bus  Dev Num  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Physical  Reserved |
; Device 12   | Number   (Shl 3)  | Reg       Routable to Pin | Reg       Routable Pin    | Reg       Routable Pin    | Reg       Routable Pin    | Slot Num  Byte     |
;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
pci_irq_entry < 00h,     060h,      042h,   1101111010111000b,  043h,   1101111010111000b,  044h,   1101111010111000b,  041h,   1101111010111000b,  4,        0        >

;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; Audio       |  Device Location  |        Int A Pin          |        Int B Pin          |        Int C Pin          |        Int D Pin          |                    |
;             +-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; AD#24       | PCI Bus  Dev Num  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Physical  Reserved |
; Device 13   | Number   (Shl 3)  | Reg       Routable to Pin | Reg       Routable Pin    | Reg       Routable Pin    | Reg       Routable Pin    | Slot Num  Byte     |
;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
pci_irq_entry < 00h,     068h,      044h,   1101111010111000b,  000h,   0000000000000000b,  000h,   0000000000000000b,  000h,   0000000000000000b,  0,        0        >

COMMENT ~
~
;----------------------------------------------------------------------------------------------------------------------------------------------------------------------;
endif   ;ifndef RT32

;------------------------------------------------------------------------------;
;                                                                              ;
;                              16/32 Bit Code                                  ;
;                                                                              ;
;------------------------------------------------------------------------------;
;---------------------------------------;
; rth_pci_search_xlat                   ;
;---------------------------------------;--------------------------------------;
; This function translates a PCI device search index to a logical PCI device   ;
; number.  In the core BIOS there are several loops that search for each device;
; on the PCI bus.  In most systems it is acceptable to search from device 0    ;
; to device 1F or from device 1F down to 0.  But in some systems the search    ;
; order may need to be more complex than a simple first-to-last or             ;
; last-to-first scheme.  This routine allows any type of search order to be    ;
; implemented.  In general there are three possibilties:                       ;
;                                                                              ;
; 1. Simple First-to-Last search order (0 - 1F)                                ;
;    This is the easiest case.  To implement this type of search order, just   ;
;    do nothing since BL is already set properly on entry.                     ;
;                                                                              ;
; 2. Simple Last-to-First search order (1F - 0)                                ;
;    This is the most common search order because it gives priority to off     ;
;    board devices (usually higher device numbers) over on board devices       ;
;    (usually lower device numbers).  To implement this type of search order   ;
;    just do:   SUB  BL, 1Fh                                                   ;
;               NEG  BL                                                        ;
;               RET                                                            ;
;                                                                              ;
; 3. Complex search order                                                      ;
;    This type of search order may be needed if an on board device's number    ;
;    lies between two PCI expansion slots.  Another use for this complex order ;
;    is to control the searching order with setup questions.  To implement a   ;
;    complex search order some sort of list must be used.                      ;
;                                                                              ;
; NOTE: This function does not need to be modified for most platforms.         ;
;                                                                              ;
; NOTE: This function is assembled twice, once for real mode code, and once    ;
;       for 32 bit protected mode code.  All calls must be made using the      ;
;       callproc macro.  Do not modify and segment registers.                  ;
;                                                                              ;
; Input:  BH = PCI bus number that is being searched                           ;
;         BL = PCI device search index "n" (in the range 0 - 1F)               ;
;                                                                              ;
; Output: BL = The "nth" PCI device number to search for (in the range 0 - 1F) ;
;                                                                              ;
; Destroys: Nothing                                                            ;
;------------------------------------------------------------------------------;
        pubproc rth_pci_search_xlat
defproc rth_pci_search_xlat
;       sub     bl, 1Fh                 ;Default is search Last-to-First
;       neg     bl
        ret
endproc rth_pci_search_xlat
;------------------------------------------------------------------------------;
;*****************************************************************;
;*****************************************************************;
;**                                                             **;
;**      (C)Copyright 1985-1995, American Megatrends, Inc.      **;
;**                                                             **;
;**                     All Rights Reserved.                    **;
;**                                                             **;
;**           6145-F Northbelt Pkwy, Norcross, GA 30071         **;
;**                                                             **;
;**                     Phone [phone]                    **;
;**                                                             **;
;*****************************************************************;
;*****************************************************************;
ifndef RT32
        _text    ends
else
        _runtime32 ends
endif
         end