> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On
Behalf
> Of David VanHorn
> Sent: Thursday, February 09, 2006 2:13 PM
> To: Microcontroller discussion list - Public.
> Subject: Re: [PIC] question from someone new to the list
> 
> >
> > machine to fail and display what looks like a big win.  Not good to
the
> > tune of some half a million in payouts a year.
> 
> 
> Ouch..
> 
> Okay amusing story done, does anyone know under what conditions a PIC
> > might have trouble reading the internal EEPROM?
> 
> 
> Are you sure it's a problem on the read side?
> Write is normally the more "delicate" operation.
> 
> Does the code actually observe all the timing requirements for EE
> operations?

I haven't verified that but it is correct far far more than not correct.
I will look into this now.

I'm guessing heat or power has something to do with this.  Happens more
in the summer that the winter (anecdotally) and we have many issues with
the cheesy power in the casinos we have these in.  Well and it is H/W
designed by programmers instead of real EE types.  Everything is running
off the PC power supply instead of solid power supplies.

Would heat and/or power issues affect the timing so it would fail rarely
and inconsistently?





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