>Apple used 6522's and 6551's as well..
>The hard part (for me :-) to find is 6532's..
>Like I said in my posting earlier, you could
>probably use the 6522 and an external ram
>just as well.
Jameco has 6532's too... $3.25 a pop. ($2.95 in 10+)
>Does anyone know off hand if there was a
>programming difference between the 6502 and
>65C02? I've tried substituting C02's for
>02's in some games, and have had problems
>getting them to work..
I want to say the c02 had 6 extra instructions? On old Atari computers
(800's, etc) I believe a chip-swap worked fine.
A friend of mine runs a company that built ICE/development systems for the
Nintendo for a long time... He says that the c02 had different
instructions, but was also different than the Western Design aand GTE
versions of the C02. (Bit test and set behaved differently from the
WDC/GTE to the Rockwell versions...)
-Clay
Clayton N. Cowgill Engineering Manager
_______________________________________________________________________
/\ Diamond Multimedia Systems, Inc. clay@supra.com
\/ Communications Division http://www.supra.com/
Received on Fri Jan 9 18:23:30 1998
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