16 Nov
2005
16 Nov
'05
3:29 a.m.
Subject: Re: 8008?
From: "Jim Kearney" <jim at jkearney.com>
Date: Tue, 15 Nov 2005 21:35:15 -0500
To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at
classiccmp.org>
I have an 8008 and HDSP2132 (8 char version). Wire wrap and a software
patch will have to do.
The 8008 appeard in one place thats common the 11/34 KY11 programmers pannel.
Possibly others.
I may not duplicate the design exact;y as you did it. Rather than memory
mapped I may implement IO ports. However looking at your design there
there some design simplifications that hadn't occured to me last 8008
project (1974). It's pretty cool and saves a carload of chips. Most
people back then were implementing multiple busses (address, ram data,
IO in, IO out, interrupt instuction) and thats a lot of chips. The MCS-8
is a really good example of getting carried away with multiple busses.
I hadn't looked at that chip in years and that was a different
perspective.
You could create a CPU, memory and IO card set.
Allison
I reviewed my old BGMicro orders and found it to
be LED1059, which
is no longer available.
There don't seem to be any ready sources for this particular display, but I
found that Osram apparently took over Siemens' opto products and *still*
lists an very similar device, the PD353x series:
http://catalog.osram-os.com/catalogue/catalogue.do?catGroupOid=000000000002…
I should locate some of these and do a Tiny-8 PCB run, but I also am lacking
8008's ;-(