Appendix A - Watchdog Timer - DFI CA230-BF User Manual

A
Watchdog Timer

Appendix A - 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
MOV
OUT
OUT
MOV
MOV
OUT
MOV
IN
AND
OUT
MOV
MOV
OUT
MOV
MOV
OUT
MOV
MOV
OUT
MOV
OR
OUT
128
EQU
EQU
DX,SIO_CON_PORT
AL,87H
DX,AL
DX,AL
DX,SIO_CON_PORT
AL,2DH
DX,AL
DX,SIO_DATA
AL,DX
AL,0FEH
DX,AL
DX,SIO_CON_PORT
AL,07H
DX,AL
DX,SIO_DATA
AL,08H
DX,AL
DX,SIO_CON_PORT
AL,030H
DX,AL
DX,SIO_DATA
AL,01H
DX,AL
2EH
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