The Jacky's <PICLIST@MITVMA.MIT.EDU> wrote:

> My application needs to be very reliable so the PIC (on startup)
> needs to make sure ROM has not lost it's mind.  One way is to just
> add, or OR, or AND each ROM location to the next location, from
> the first to the last. .... This seems to simple.  There could be a
> hidden problem, a better WAY.  The most reliable WAY.   Any
> thoughts on this.....?

Jacky's:

There IS a problem... It's not possible for a PIC16C73 to checksum
its own ROM; the architecture of the device prevents it.

Sorry.

-Andy

=== Andrew Warren - fastfwd@ix.netcom.com
=== Fast Forward Engineering - Vista, California
=== http://www.geocities.com/SiliconValley/2499