Re: Difference between 6502 & 65C02

[ralphp@prysm.net (Ralph Wade Phillips)]

Hi, David!

In article <4j5ohj$p2s@atlantis.atlantis.actrix.gen.nz>,
dempson@atlantis.actrix.gen.nz (David Empson) wrote:

> In article <4ivuv4$rlc@crl11.crl.com>, Chet Gerhardt <aplworks@crl.com> wrote:
> > 
> > OK, How about a 6503 (I got one in a Platinum IIe a while back)?  A 
> > Friend and I were chatting about this, what is the difference between a 
> > 6503, a 65c02 and a 6502? :)
> 
> A "6503" _is_ a 65C02.  It is just Apple's part number (they were not
> able to put a letter in the middle of the number, so they called it a
> 6503, implying it is one better than a 6502).  It is probably an NCR
> or GTE-sourced 65C02.  It definitely won't be a Rockwell R65C02, which
> has several extra bit-manipulation instructions.
> -- 
> David Empson
> dempson@actrix.gen.nz
> Snail mail: P.O. Box 27-103, Wellington, New Zealand

        Well, yes, it can be.  I worked at an Apple dealer during the
start of the enhancement series (actually worked from 1981 to 1989 ... )
and whereas the MAJORITY of the upgrades came with NCRs, several with
GTEs, there WERE quite a few with the Rockwell 65SC02's.

        RwP
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