ICOP Embedded 386SX PC/104 AIO CPU Module User's Manual
15
Configuring the Watchdog Timer by Software
Chipset configuration registers
The M6117D configuration register INDEX 37H, 38H, 39H, 3AH, 3BH, 3Ch
are used to control the watchdog functions and/or display its current status.
Enable/Disable watchdog - INDEX 37H
Bit Value
Action
7
reserved
Do not modify the value of these bits!
6 0
1
Disable watchdog timer
Enable watchdog timer
5-0
Other function
Do not modify the value of these bits!
Watchdog time out action - INDEX 38H
Bit Value
Action
7-4
0000
No output signal
0001
IRQ3
0010
IRQ4
0011
IRQ5
0100
IRQ6
0101
IRQ7
0110
IRQ9
0111
IRQ10
1000
IRQ11
1001
IRQ12
1010
IRQ14
1011
IRQ15
1100
NMI
1101
System
RESET
1110
No output signal
1111
No output signal