On Wed, 5 Jul 2000 23:04:23 +0100 (BST) Tony Duell
<ard(a)p850ug1.demon.co.uk> wrote:
Just a thought
about the CPLD vs. TTL discussion: Would it
be possible to design the device such that it could be
built EITHER in TTL chips OR as a CPLD? With the same
I've done a significant amount of design with FPGAs (not CLPDs, though,
so this might be different), and my experience suggests that no matter
what the manufacturers claim you _can't_ take a TTL-based circuit, feed
it into the schematic capture program, and expect the result to work
properly.
I wouldn't expect the two designs to be identical at that
level, just to appear to function the same to the external
world. That way, we'd be able to write the same software
to work with either hardware implementation.
-tony
--
John Honniball
Email: John.Honniball(a)uwe.ac.uk
University of the West of England