Appendix B - Watchdog Timer - DFI-ITOX SR330-L User Manual

Appendix B - Watchdog Timer

Watchdog Timer
The following parameters are references for setting the time interval
of the Watchdog Timer function. The system will regularly be "cleared"
according to the set time interval. If the system hangs or fails to
function, it will also reset according to the time interval so that your
system will continue to operate.
;================ PROGRAM START ================
SIO_CON_PORT
SIO_DATA
begin:
MOV DX,SIO_CON_PORT
MOV AL,87H
OUT DX,AL
OUT DX,AL
MOV DX,SIO_CON_PORT
MOV AL,2DH
OUT DX,AL
MOV DX,SIO_DATA
IN AL,DX
AND AL,0FEH
OUT DX,AL
MOV DX,SIO_CON_PORT
MOV AL,07H
OUT DX,AL
MOV DX,SIO_DATA
MOV AL,08H
OUT DX,AL
MOV DX,SIO_CON_PORT
MOV AL,030H
OUT DX,AL
MOV DX,SIO_DATA
OR AL,01H
OUT DX,AL
EQU 2EH
EQU 2FH
;SUPERIO ENTER CONFIG
;GPIO5 AND POWER CONTROL SIGNALS
MULTI-FUNCTION PIN SELECTION
;BIT 0 PIN77 SELECT (0= WDTO#, 1=
GPIO50)
;SELECT PIN TO WATCH DOG
;LOGIC DEVICE SLELCT
;SELECT DEVICE 8 (WATCH DOG)
;ACTIVATE REGISTER
;0= INACTIVATE, 1=ACTIVATE
Watchdog Timer
B
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