6502 Help
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Sorry for the off-list topic, I hope someone here might be able to help.
I am doing a comparison of the 3 Chip Plus and the Basic Stamp kit as two systems used to teach control techniques at schools. I was looking for some information on what the 3 Chips are, and what they do. I know· there is the 6502 processor and the 6522 (?) VIA interface chip (not sure exactly what this does), but do not know what the third chip is. If anyone can help, could you please contact me off-list.·My e-mail is timproject82@hotmail.com
Thanks in advance for any help you can give
Tim Whitmore
I am doing a comparison of the 3 Chip Plus and the Basic Stamp kit as two systems used to teach control techniques at schools. I was looking for some information on what the 3 Chips are, and what they do. I know· there is the 6502 processor and the 6522 (?) VIA interface chip (not sure exactly what this does), but do not know what the third chip is. If anyone can help, could you please contact me off-list.·My e-mail is timproject82@hotmail.com
Thanks in advance for any help you can give
Tim Whitmore
Comments
the 6502 (which is a derivation, knock off, of the 6800). The MC6800 is the
microprocessor, the MC6820 is the PIA (parallel interface adapter) and the
MC6850 is the ACIA (async. communitions interface adapter for serial I/O).
Info on these devices is in many of the older text books and Motorola had
many application notes devoted to the use of these parts, including hardware
and software, which I believe is still available. The MC6800 family was
introduced in 1974 by Motorola. Hope this helps. Burt
If I good remember, the 6502 is born before the 6800.
It has a very clean and easy to remember assembly syntax, a lot more
logical and regulated than the messy Intel syntax.
I have no experience with the 6800 family.
Regards
ECO
Original Message
From: <burtsz@a...>
To: <basicstamps@yahoogroups.com>
Sent: mercredi 18 avril 2001 06:00
Subject: Re: [noparse][[/noparse]basicstamps] 6502 Help
> Hi Tim, Suggest you consider using the Motorola MC6800 family in place of
> the 6502 (which is a derivation, knock off, of the 6800). The MC6800 is the
******
about mid-1974. One of the members of the 6800 design team at Motorola
(based in Phoenix, AZ) jumped ship after the 6800 was designed and joined MOS
Technology where he (and others) designed the 6502. The 6502 is very similar
to the 6800 architecture and instruction set and found it's fame and fortune
in the first Apple computer. Both are much easier to use (both hardware and
software) than the Intel family, 8008, 8080, etc. FYI, Burt Schultz