Appendix B - Watchdog Sample Code - DFI SB600-C User Manual

Appendix B - Watchdog Sample Code

;Software programming example:
;---------------------------------------------
;(1) Enter Super IO Configuration mode
;---------------------------------------------
MOV DX,2EH
MOV AL,87H
OUT DX,AL
OUT DX,AL
;-------------------------------------------------------------------------------------------
;(2) Configuration Logical Device 7, register CRF5/CRF6 (WDT Control /WDT
timer)
;-------------------------------------------------------------------------------------------
MOV DX,2EH
MOV AL,07H
OUT DX,AL
MOV DX,2FH
MOV AL,07H
OUT DX,AL
MOV DX,2EH
MOV AL, F6H
OUT DX,AL
MOV DX,2FH
MOV AL,10H
OUT DX,AL
MOV DX,2EH
MOV AL, F5H
OUT DX,AL
MOV DX,2FH
MOV AL,61H
OUT DX,AL
;----------------------------------------------------------------
;(1) Exit extended function mode
;----------------------------------------------------------------
MOV DX,2EH
MOV AL,AAH
OUT DX,AL
;Ready to Program Logical Device
;Select Logical Device 7
;Select watchdog timer register
;Set watchdog timer value
;Select watchdog Control Register
;Set Watchdog Control Value
Watchdog Timer
B
127