User manual
15  The ENDAT-7100M System Board 
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 LPT2 or 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. Watch dog Timer 
Watch dog 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 










