Aaeon PCM-4335, Руководство пользователя

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76 PCM-4335 User's Manual
SetWatchDog_Time ENDP
;; Enter to I/O Chip Program Configuration Register Mode
EnterConfig proc
cli
push ax
push dx
mov al,87h ;; Specific Value to Enter Config Mode
mov dx,cs:CONFIG_PORT ;;
out dx,al ;; Write to Config Port Twice!
out dx,al ;;
jmp $+2 ;; Delay
jmp $+2 ;;
pop dx
pop ax
ret
EnterConfig endp
;; Exit to I/O Chip Program Configuration Register Mode
ExitConfig proc
push ax
push dx
mov al,0aah ;; Specific Value to Exit Config Mode
mov dx,cs:CONFIG_PORT ;;
out dx,al ;; Write to Config Port
pop dx
pop ax
ret
ExitConfig endp