Date   : Wed, 17 Jun 2009 09:36:19 +0100
From   : jgh@... (Jonathan Graham Harston)
Subject: 65C02 instructions

Rick Murray wrote:
> > Rockwell specific extensions  that are not part of
> > the standard instruction set. Some manufacturers
> 
> Thanks for confirming this. I won't bother to support them in my
> emulator. I'll just add in some code to flash up a big message - and if
 
No, your emulator should execute them as NOPs or as the combined
effects that they perform on actual hardware. A physical 6502 CPU
never causes an message to be displayed when executed undefined
opcodes, an emulated 6502 shouldn't either.
 
See http://mdfs.net/Docs/Comp/6502/OpList
 
-- 
J.G.Harston - jgh@...                - mdfs.net/User/JGH
There are three food groups: brown, green and ice cream.