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Appendix b - watchdog sample code, Appendix b appendix b - watchdog sample code – DFI DT122-HR Manual User Manual

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Appendix B Watchdog Sample Code

Appendix B

Appendix B - Watchdog Sample Code

;Software programming example:

;---------------------------------------------
;(1) Enter Super IO Confi guration mode
;---------------------------------------------
MOV DX,2EH
MOV AL,87H
OUT DX,AL
OUT DX,AL

;-------------------------------------------------------------------------------------------
;(2) Confi guration Logical Device 7, register CRF5/CRF6 (WDT Control /WDT
timer)
;-------------------------------------------------------------------------------------------
MOV DX,2EH
MOV

AL,07H

;Ready to Program Logical Device

OUT DX,AL

MOV DX,2FH
MOV

AL,07H

;Select Logical Device 7

OUT DX,AL

MOV DX,2EH
MOV

AL, F6H

;Select watchdog timer register

OUT DX,AL

MOV DX,2FH
MOV

AL,10H

;Set watchdog timer value

OUT DX,AL

MOV DX,2EH
MOV

AL, F5H

;Select watchdog Control Register

OUT DX,AL

MOV DX,2FH
MOV

AL,61H

;Set Watchdog Control Value

OUT DX,AL

;----------------------------------------------------------------
;(1) Exit extended function mode
;----------------------------------------------------------------
MOV DX,2EH
MOV AL,AAH
OUT DX,AL