Giantec GT-460, Руководство пользователя

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User’s Guide
A-2 Watch Dog Timer
out dx, al
jmp short $+2
mov dx, 71h
in al, dx
jmp short $+2
or al, 08h
out dx, al
jmp short $+2
Watchdog Time Out Table:
Time Value Time Out Time Value Time Out
0 None 8 0.5 sec.
1 0.5 sec. 9 1 sec.
2 1 sec. A 2 sec.
3 0.015 sec. B 4 sec.
4 0.03 sec. C 8 sec.
5 0.06 sec. D 16 sec.
6 0.125 sec. E 32 sec.
7 0.25 sec. F 64 sec.
(2)
Enable watchdog output :
mov dx, 443h ; SET WATCH DOG ENABLE
in al, dx
jmp short $+2
(3) Disable watchdog output:
mov dx,043h ; SET WATCH DOG DISABLE
in al,dx
jmp short $+2