46
PC/104-Plus – CPU-1461 Module
MOV
DX,IO_SPIO_WDT_BASE
; Timeout Period Register
MOV
AL,DesideredTimeout
;
2..255
seconds/minutes
OUT
DX,AL
Use following code to refresh the Watch Dog :
; Reload original Timeout...
MOV
DX,IO_SPIO_WDT_BASE
MOV
AL,DesideredTimeout
;
2..255
seconds/minutes
OUT
DX,AL
Use the following code to disable the Watch Dog (no additional refresh required):
; Set Timeout to 0 Seconds ...
MOV
DX,IO_SPIO_WDT_BASE
; Timeout Period Register
MOV
AL,0
OUT
DX,AL
•
Note:
for further information about the Watch Dog programming, refer to
“PC87364 128-Pin LPC
SuperI/O”
manual by National Semiconductor.
