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Subject: Re: 5 day lockup on Densitron
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On Saturday 07 May 2005 02:00, Clifton Royston wrote:
>  What you describe
> could conceivably be the result of a special counter or RTC chip
> running as a "watchdog timer" with a count-down from boot time, and
> generating some kind of special interrupt when that countdown reaches
> 0.  Watchdog devices are sometimes set up to require the application
> software to "stroke" the timer periodically (reset it in software) with
> the intent to force a reset of the system (usually a reboot) after
> such-and-such a period of time if not stroked.  

Watchdog timeouts are typically a fraction of a minute, a 5 day watchdog 
timeout is very unlikely.