User’s Manual
17
IRQ Status
Assignment
0 Used
Timer
1 Used
Keyboard
2 Used
Second
8259
3 Used
COM2
4 Used
COM1
5 Used
COM3
6 Used
Floppy
Disk
7 Used
LPT1
8 Used
RTC
9 Used
Audio
10 Used
COM4
11 Used
LAN
Adapter
(on
board)
12 Used
PS/2
Mouse
13 Used
Coprocessor
14
Used Hard Disk (IDE 1)
15 Used
Reserved
(IDE
2)
2-5. Watchdog Timer
Watchdog Timer (WDT) is a special design for system monitoring to secure the
system work normally. WDT has an independent clock from the oscillator and could
set time and clear/refresh WDT counter function. When time is up, WDT will send
hardware RESET signal to reset system.
Timeout Value Range
-1 to 255
-Second or Minute
