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> From: Mike Smith <msmith@PASTEUR.DIALIX.COM.AU>
>
> Which is probably why Scenix made it a superset of the PIC 5x's.
> Smooth migrations?


The Scenix SX instruction set is NOT a true superset of the Microchip
5X's. There are enough similarities that some code will run. View it as
the relationship between a 8080 and Z80. Some of the 5X code will
run on the SX  and very little of the SX code will run on the 5X.

I agree with Tom Rogers and others on the list that there is very little
overlap between Scenix and Microchip parts in terms of applications.
My reaction the first time I saw the specifications for the part was
surprise at the simple solution that Scenix had found to two problems
that chip companies in general have had. They have had to support
many different parts to cover a wide range of applications and they
have had to manufacture, characterize  and inventory many different
parts. I had a wow factor over the 50-100MIPS because that opened
new application area's.  Existing designs using Microchip 5X parts
are very unlikely to start using Scenix.

Walter Banks