Intel PCM-3370 Appendix a Programming the Watchdog Timer, Programming the watchdog timer

Appendix A Programming the Watchdog Timer

A.1 Programming the watchdog timer

The following example show how you might program the watchdog timer in Assembly:

1. Watch Dog Timer Enable

Port 404e Bit7 set "o" to enable PCM-3370 Watch Dog Timer Ex:

Mov DX, 404e

Mov AL, 7F

Out DX, AL

2. Watch Dog Timer Disable

Port 404e Bit6 set "o" to disable PCM-3370 Watch Dog Timer Ex:

Mov DX, 404e

Mov AL, BF

Out DX, AL

PCM-3370 User’s Manual 90