Intel MAT-880 User Manual page 32

INSTALLATIONS
call Write_Reg
call Lock_Chip
ret
Enable_And_Set_Watchdog Endp
;[]===============================================
; Name : Disable_Watchdog
; IN : None
; OUT : None
;[]===============================================
Disable_Watchdog Proc Near
call Unlock_Chip
mov cl, 07h
mov al, 08h
call Write_Reg
xor al, al
mov cl, 0F6h
call Write_Reg
xor al, al
mov cl, 30h
call Write_Reg
call Lock_Chip
ret
Disable_Watchdog Endp
;[]===============================================
; Name : Unlock_Chip
; IN : None
; OUT : None
;[]===============================================
Unlock_Chip Proc Near
Mov dx, 4Eh
mov al, 87h
out dx, al
out dx, al
ret
Unlock_Chip Endp
;[]================================================
; Name : Lock_Chip
; IN : None
; OUT : None
;[]================================================
28
;watchdog enabled
;switch to LD8
;clear watchdog timer
;watchdog disabled
MAT-880 User' s Manual