Re: 6502 illegal opcodes

From: Pete Rittwage <*peter_at_rittwage.com*> Date: Fri, 4 Nov 2011 13:14:30 -0400 (EDT) Message-ID: <62415.10.2.0.120.1320426870.squirrel@rittwage.com> · peter_at_rittwage.com

On Fri, November 4, 2011 12:47 pm, MichaÅ‚ Pleban wrote:
> Hello!
>
> W dniu 2011-11-04 17:01, didier derny pisze:
>
>> are they reliable from a 6502 to another  ?  (for example   mos vs
>> rockwell vs synertek)
>> or between 6502, 6509, 6510 ?
>
> Yes, they are all present in 6502/6509/6510/7501/8501/8502. They are not
> present in CMOS 65C02, but it did not make into any production Commodore
> machine. Don't know about Rockwell & Synertek :-(
>
> Regards,
> Michau.
>
>        Message was sent through the cbm-hackers mailing list
>

Those companies were licensed to make the chips based on the same design
in order to be a second-source option, so I assume the die is identical. 
They weren't licensed to just re-implement the functionality and pinout.

-
Pete Rittwage
C64 Preservation Project
http://c64preservation.com

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