>     1. 18F452 can be programmed with picstart plus, right?

IIRC it can, with the right firmware. Check the 'supported targets' list
for the firmware

>     2. May I use the code I have running in 16F628 in 18F452 with no
> changes, or at least few changes?

Only if you have used a development system that is designed to hide such
a target change from you, in that case you might get away with a
re-compilation. But the 14-bit (16F) and 16-bit (18F) PICs are quite
different (much more than 12 and 14 bit cores), down to the same
instructions (when they exist) having slightly different effects.

>     3. The 1,5K of memory that 18F has is all available for user?

yes, and in a much more transparent way than on 16F's

Wouter van Ooijen

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Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products

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