Intel System Board G4H875-B - Manual (Page 128)

128
D
Watchdog Timer
Appendix D - Watchdog Timer
To use the Watchdog timer function, please follow the steps below.
1. Set the "6300ESB WDT Function" field to Enabled (Integrated
Peripherals submenu, Onboard Device section of the BIOS).
2. Set the time interval of the Watchdog timer in the "WDT Timer
Value" field.
3. Run the parameters shown below.
;Main start
mov dx,0cf8h
mov eax,8000ec60h ;Select Bus0 Dev1D Func4 Reg60
out dx,eax ;6300ESB Watch-Dog
jmp $ +2
mov dx,0cfch
mov al,03h
out dx,al ;Reg 60 = 7 - No INT, 1Mhz
jmp $ +2
dely:
nop
nop
nop
loop
dely
mov dx,0cf8h