protech SE-8134 - Page 126

Appendix B Technical Summary
SE-8134 SERIES USER MANUAL
Page: B-23
Code example for watch dog timer
Enable watchdog timer and set timeout interval to 30 seconds.
; --------------------Enter to extended function mode-------------------------
mov dx, 2eh
mov al, 87h
out dx, al
out dx, al
; -----------------Select Logical Device 7 of watchdog timer----------------
mov al, 07h
out dx, al
inc dx
mov al, 07h
out dx, al
;-------------------------Enable Watch dog feature-----------------------------
mov al, 030h
out dx, al
inc dx
mov al, 01h
out dx, al
;------------------------------Enable Watch PME--------------------------------
dec dx
mov al, 0FAh
out dx, al
inc dx
in al, dx
and al, 51h
out dx, al
; -------------------------Set timeout interval to 30-----------------------------
dec dx
mov al, 0F6h
out dx, al
inc dx