Appendix D - Watchdog Sample Code; D Watchdog Timer - DFI-ITOX G4H875-N User Manual

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
dely:
128
mov dx,0cf8h
mov eax,8000ec60h
out dx,eax
jmp $ +2
mov dx,0cfch
mov al,03h
out dx,al
jmp $ +2
nop
nop
nop
loop dely
mov dx,0cf8h
;Select Bus0 Dev1D Func4 Reg60
;6300ESB Watch-Dog
;Reg 60 = 7 - No INT, 1Mhz