User guide

Half-size SBC HSB-525I
Appendix A Programming the Watchdog Timer A-5
WatchDog Timer Register II (Index=F6h, Default=00h)
Bit 7-0 = 0 x 00 Time-out Disable
= 0 x 01 Time-out occurs after 1
second/minute
= 0 x 02 Time-out occurs after 2
second/minutes
= 0 x 03 Time-out occurs after 3
second/minutes
………………………………..
= 0 x FF Time-out occurs after 255
second/minutes
WatchDog Timer Register III (Index=F7h, Default=00h)
Bit 7 : Mouse interrupt reset Enable or Disable
= 1 Watchdog Timer is reset upon a
Mouse interrupt
= 0 Watchdog Timer is not affected by
Mouse interrupt
Bit 6 : Keyboard interrupt reset Enable or
Disable
= 1 Watchdog Timer is reset upon a
Keyboard interrupt
= 0 Watchdog Timer is not affected by
Keyboard interrupt
Bit 5 : Force Watchdog Timer Time-out. Write
Only