Owner's manual

Embedded Controller AEC-6930
Appendix A Programming the Watchdog Timer A-6
push ax
push cx
mov dx,SMBus_Port +04h ;SMBus_Port(500h)
mov al,ch ;ID cmd(Write)
out dx,al
call Delay5ms
call Delay5ms
pop ax
mov dl,03h
out dx,al ;Index
call Delay5ms
call Delay5ms
pop ax
mov dl,05
out dx,al ;Data0
call Delay5ms
call Delay5ms
mov dl,02h
mov al,48h
out dx,al ;write data
call Delay5ms