> Oh, I quite agree. I don't advocate always using shadow regs; rather, I
> advocate knowing what the problem is so you can quickly recognize it
> should it occur (and, of course, knowing how to solve it *correctly* in
> those cases).

I definitely do advocate using shadow registers. In nearly all cases the 
added time and code is not a problem. A 100nF capacitor across the power 
pins is not always needed either...

The problem with the correct-when-trouble-is-found is that whether 
trouble occurs can be very dependent on variable factors: temperature, 
tolerances, power supply voltage, chip revision, etc. So there might be 
no trouble on your table, but lots of trouble in the field.

-- 

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: www.voti.nl/hvu

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