> .. for example with PIC you can have a memory location of 0 as a valid RAM
> address, which is against the ANSI standard (NULL pointer...). 

But there is no requirement that NULL is is the address of memory 
location 0, nor that NULL is represented by all bits 0, so this poses no 
problem.

-- 

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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