F u l l - s i z e C P U C a r d
S B C - 8 6 0
Appendix A Programming the Watchdog Timer
A-3
mov
al, 55h
out
2eh, al
mov
al, 55h
out
2eh, al
;============================ =======
; Select logical device
;============================ =======
mov
al, 7
;index 7 for logical device
out
2eh, al
mov
al, 7
out
2fh, al
;============================ =======
; Configure the watchdog timer controller registers
;============================ =======
mov
al, 73h
out
2eh, al
mov
al, 0ah
;index 73h for watchdog timer
time-out value
out
2fh, al
mov
al, 72h
out
2eh, al
mov
al, 0c0h
;time-out value use second &
enable WDT output through
KRST
out
2fh, al
