> > For an ICSP programmer it makes of course sense to draw the 
> power from
> > the target itself.
> 
> But then the programmer can't control Vdd, which is necessary for some
> chips.  In many instances a hobby programmer can get away 
> with using target
> Vdd, but serious professional programmers can't afford to do that.

ICSP and variable-voltage verification is a shaky combination anyway....

BTW: which chip require variable Vdd for programming (!= for
verification)?

Wouter van Ooijen

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

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist