65C02 (was RE: Stuff on ebay)

From: Ethan Dicks <erd_6502_at_yahoo.com>
Date: Thu Oct 3 16:15:41 2002

--- Eric Smith <eric_at_brouhaha.com> wrote:
> When Rockwell licensed the CMOS 6502 from WDC, they added their bit
> manipuation instructions to it. Thus the Rockwell R65C02 has more
> instructions than the "standard" 65C02 from WDC, GTE, NCR, and others.

Speaking of the 65C02, does anyone know if replacing the 6502 in a PET
or VIC-20 is known to trip up copy protection on any apps/games? I
know that for well-behaved code, there should be no problems. I'm
concerned about WordPro or some other pirate-fearing program trying
to be clever with undocumented op codes, and not working with a real
65C02.

-ethan


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Received on Thu Oct 03 2002 - 16:15:41 BST

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