vintagecomputer at bettercomputing.net
Mon Oct 23 01:45:42 CDT 2017
I'm going to put it on my list of projects to create a CPU card for my Microtutor that uses the 1802 instead I think. I can get some blue PCB stock. As far as I understand the 1802 is fully backward compatible.
Maybe the 1801s will show up on day. I've found all kinds of chips I was told were impossible to locate.
Sent from my Samsung device
-------- Original message --------
From: Steven Feinsmith <steven.feinsmith at gmail.com>
Date: 2017-10-20 7:32 PM (GMT-08:00)
To: Brad H <vintagecomputer at bettercomputing.net>, "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
Subject: Re: CDP1801
RCA 1801 disappeared from face of Earth forever... You would be better off to purchase at:
http://www.sunrise-ev.com/membershipcard.htm to use 1802. The 1802 was very successful microprocessor that replaced 1801 because it required to have a pair of chips to work together. I believe I saw 1801 was more than 30 years ago.
On Wed, Oct 18, 2017 at 9:45 PM, Brad H via cctalk <cctalk at classiccmp.org> wrote:
I just purchased an RCA Microtutor minus the rather important CPU card. I
can recreate the card but I expect locating the 1801 chips will be
difficult. I am just posting this in various forums in case anyone has any
leads on where I might find either the complete card or the required chips
to make a replacement. I'm wondering what, if any devices were built with
the 1801 that I might be able to scrounge from.
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