Appendix B Technical Summary
SP-7755 USER MANUAL
Page: B-24
in
al,
dx
or
al,
51h
out
dx,
al
; -----------------------Set second as counting unit -------------------------
dec
dx
mov
al,
F5h
out
dx,
al
inc
dx
in
al,
dx
and
al,
DEh
out
dx,
al
;---------------------------Start the watchdog timer
------
--------------------
or
al,
20h
out
dx,
al
;----------------------
Exit the extended function mode-
--------------------
dec
dx
mov
al,
AAh
out
dx,
al
