[vcf-midatlantic] help with RCA VIP COSMAC

Richard Cini rich.cini at gmail.com
Mon Oct 29 11:46:03 EDT 2018

I agree with Herb on that. Part of what I like best about getting a new toy is the triage and discovery of the system.

If you suspect memory I would try to find a simple test program (if the system even allows you to get that far). As far as parts there are plenty of vintage chip suppliers out there.

Good luck!

Get Outlook for iOS<https://aka.ms/o0ukef>

From: vcf-midatlantic <vcf-midatlantic-bounces at lists.vcfed.org> on behalf of Herb Johnson via vcf-midatlantic <vcf-midatlantic at lists.vcfed.org>
Sent: Monday, October 29, 2018 11:40 AM
To: vcf-midatlantic
Cc: Herb Johnson
Subject: [vcf-midatlantic] help with RCA VIP COSMAC

> Earl Baugh
> Thu Oct 25 12:22:18 EDT 2018

> I got one of these (https://www.youtube.com/watch?v=IkgmAjE1ONY) arrived
> last night...
> With original box, manuals and even sales receipt!

[video shows an RCA COSMAC VIP single-board computer. Unknown if the
items shown match what Earl obtained.]
> There may be a bad RAM chip... (according to the notes on the box...)
> Any ideas if I'll have trouble finding an appropriate part to fix it?
> (I've only had time to unbox it, not look thru the manuals or anything but
> thought I'd try to tap the collective intellect here to get some initial
> thoughts..)
> Earl

Earl, I re-posted your request, to have an appropriate subject. Your
post was buried with a bunch of other postings. Myself, I like COSMAC
stuff, congrats on your find.

The VIP is popular among COSMAC (RCA 1802 processor) enthusiasts. You
will find other owners in the Yahoo cosmacelf discussion group.

Of course, spend time with what you got, and find out what's actually
going on with it. Then look for chips by model number to see if you can
find it or them. Much of the fun I have with this stuff, is in figuring
it out myself. But it's also fun to discuss repair and parts, once
details are established.

Herb Johnson

Herbert R. Johnson, New Jersey in the USA
http://www.retrotechnology.com OR .net
preserve, recover, restore 1970's computing
email: hjohnson AT retrotechnology DOT com
or try later herbjohnson AT retrotechnology DOT info

More information about the vcf-midatlantic mailing list