參數(shù)資料
型號: 20381
英文描述: Magic Packet Technology Application in Hardware and Software? - (PDF)
中文描述: 魔包技術在硬件和軟件? - (PDF格式)
文件頁數(shù): 24/29頁
文件大?。?/td> 86K
代理商: 20381
24
Magic Packet Technology Application in Hardware and Software
mov al,READ_CONFIG_DWORD ; request for AMD PCI device
int 1ah ; PCI BIOS interface
;
jc READ_FAIL ; exit, if error
;
or ah,ah ; check return code
jnz READ_FAIL ; jump, if error happened
; CX now contains the address of the card but the address has its lower bit
; set in PCI config register to indicate it is I/O not memory. Therefore we
; will have to mask off that bit.
;
mov ax,cx ; save config byte
and ax,0fffeh ; mask off the lower bit to 0
mov Found_address, ax ; Save off the Found_address
mov ax,1 ; 1 = PCI Device found
mov PCI_DEVICE_FND, al
mov bx, 0001h ; output message PCI card found
lea dx, message9
mov cx, l_message9
mov ah, 40h
int 21h
jmp FOUND
READ_FAIL:
mov bx, 0001h ; output message read address fail
lea dx, message11
mov cx, l_message11
mov ah, 40h
int 21h
jmp NOT_HERE
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