NAGASAKI Corporation
Timeout Status & Reset Watchdog - INDEX 3CH
Bit 7
0
Timer timeout not happened
1
Timer timeout happened
Read
only.
Bit 5
Write this bit “1” to reset timer
The value on this bit has no meaning.
Bit 6
Bit 4-0
Other function.
Please do not modify these bits.
Programming Watchdog - Basic Operation
If we would like to access M6117C configuration register, we need to unlock register at first
and lock it after finishing operation.
$
Unlock Configuration Register
mov al,
013h
out 22h,
al
nop
nop
mov al,
0c5h
out 23h,
al
nop
nop
$
Lock Configuration Register
mov al,
013h
out 22h,
al
nop
nop
mov al,
000h
out 23h,
al
nop
nop
$
Read the Value at Configuration Register
For example, read INDEX 3Ch:
Unlock configuration register
mov al,
03ch
out 22h,
al
nop
nop
in al,
23h
nop
nop
push ax
Lock configuration register
39
Summary of Contents for PC104-386L-2M
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