AXIOMTEK SBC8232, Руководство пользователя

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SBC8232 386SX ISA Half-size CPU Card Family User’s Manual
Watchdog Timer
25
Watchdog Time Out Table:
Time
Value
Time Out
(sec.)
Time
Value
Time Out
(sec.)
0 None 8 0.5
1
0.5
9
1
2
1
A
2
3 0.015 B 4
4
0.03
C
8
5 0.06 D 16
6 0.125 E 32
7
0.25
F
64
Enable watchdog output:
mov dx, 443h ; SET WATCH DOG ENABLE
in al, dx
jmp short $+2
Disable watchdog output:
mov dx,043h ; SET WATCH DOG DISABLE
in al,dx
jmp short $+2