Date   : Wed, 28 Apr 2004 13:41:37 +0100 (BST)
From   : Andrew Benham <adsb@...>
Subject: Re: 65c02

 --- Pete Turnbull <pete@...> wrote:

>  Since some
> of the Beeb bus timing is "close to the edge", using
> a slightly different processor might cause a
problem.

The trickiest example I came across was that a 65C02
appeared
to work perfectly in my issue 4 BBC model B, except
that some
code I was developing which used the User VIA quite
heavily didn't
work correctly.
Putting the original NMOS 6502 back in made the code
spring into
life, and I never had confidence in using a 65C02 in a
model B after
that.


====
-- 
Andrew Benham       adsb@...           
Southgate, London N14, United Kingdom

The gates in my computer are AND OR and NOT, not "Bill".