> I think there's one paradigm issue here. It's not effective if you put
> it in the realm of traditional programmers. I think of this type (and
> all of my Trivial programmers too) as firmware dumping 
> circuits. Their place
> is not to serve as a traditional programmer, but as a non 
> intelligent tool
> to get to intelligent programmers, both self hosting (via 
> bootloaders) and
> off chip hosted.
> 
> In that context a power flip or two one time per chip isn't 
> too terribly costly.

I was not thinking of cost, but of error-pronesness. That's why I don't
like the timing capacitor(s). And thye switches must be switched at the
right moment, and the Vpp must be 13 Volt, which is *not* the same as a
wall-wart set to 13Volt (if that existed), so I think this progger is
more complex to use (even to use once) than it seems.

To ride your hobby horse: I think programming a bootloader or the
firmware of an intelligent progger is one of the places where LVP is
appropriate.

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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