Search found 12 matches

by althus
Fri May 11, 2018 4:21 pm
Forum: Main Lobby / General Discussions
Topic: CXG Advanced Portachess: What processor is in it??
Replies: 8
Views: 1731

Part of the fun of the Oldies is finding out what is actually inside them rather than what people think is inside them. I'm discovering that. :) And CXG did some weird things with mixing-and-matching, for sure. It would be nice to know what is in the machine of the guy who played those games at the...
by althus
Fri May 11, 2018 2:21 pm
Forum: Main Lobby / General Discussions
Topic: CXG Advanced Portachess: What processor is in it??
Replies: 8
Views: 1731

Well, the wiki has changed. That was fast :)

Still dunno why I can't recreate the games, though.
by althus
Fri May 11, 2018 2:00 pm
Forum: Main Lobby / General Discussions
Topic: CXG Advanced Portachess: What processor is in it??
Replies: 8
Views: 1731

Thank you! I appreciate it and do hope you got the thing back together. It still leaves the mystery of the irreproducible games (and the wiki). This document suggests there were two versions, one in 1982 and another in 1984, but isn't sure. Maybe the processor was the difference...? It just makes no...
by althus
Fri May 11, 2018 1:40 am
Forum: Main Lobby / General Discussions
Topic: CXG Advanced Portachess: What processor is in it??
Replies: 8
Views: 1731

CXG Advanced Portachess: What processor is in it??

Schachcomputer Wiki says Hitachi HD44801. Simple, right? Well, the spec sheet at the end of this file indicates it has the same chip as the CXG-002, which is a HD44840 (I know because I have one), and a different chip than the CXG-001 (which in fact has a HD44801). So which is right? The wiki or th...
by althus
Thu May 18, 2017 8:55 pm
Forum: Main Lobby / General Discussions
Topic: CXG Computers
Replies: 13
Views: 2966

Lately my wife has started teasing me with "DOOdoodoo-dee-dooooo!"
by althus
Wed May 17, 2017 3:22 pm
Forum: Main Lobby / General Discussions
Topic: CXG Computers
Replies: 13
Views: 2966

Meh, I'm inclined to give it some slack :) It's basically running on a calculator chip. 80 bytes of RAM... How much of a search tree can you even put into that?
by althus
Wed May 17, 2017 2:03 am
Forum: Main Lobby / General Discussions
Topic: CXG Computers
Replies: 13
Views: 2966

Since the topic of CXG has come up, there's something I've been wondering. It's not about the best of the CXG computers but possibly the worst of them: the original Sensor Computachess (CXG-001) There is bug in the software for its immediate successor, the CXG Computachess II (CXG-002) (my very firs...
by althus
Tue May 16, 2017 2:38 pm
Forum: Main Lobby / General Discussions
Topic: Emulation of old (OLD!) chess computers and programs
Replies: 50
Views: 19355

BenRedic wrote: Request sent. Fingers crossed.
Let us know what happens!

It looks like Chess 4.6 is probably the latest anyone will ever get, in trying to resurrect these programs. Once BELLE came around, customized hardware became a thing. Of course, BELLE was apparently donated to the Smithsonian, so...
by althus
Tue May 16, 2017 1:27 am
Forum: Main Lobby / General Discussions
Topic: Emulation of old (OLD!) chess computers and programs
Replies: 50
Views: 19355

ps Here is something neat. Want to get a guest login on some actual vintage minicomputers from the 70s? Fill out an application form at the Living Computer Museum in Seattle: http://www.livingcomputers.org/ http://www.livingcomputers.org/Discover/Online-Systems/Request-a-Login.aspx None of this foof...
by althus
Tue May 16, 2017 1:19 am
Forum: Main Lobby / General Discussions
Topic: Emulation of old (OLD!) chess computers and programs
Replies: 50
Views: 19355

I see they say that the program they use is 2.11 BSD chess. I did some looking around, and found this: https://sourceforge.net/projects/bsd42/?source=typ_redirect Does anybody have any idea who programmed this one? Could this be related to the Thompson program mentioned earlier, or is this somethin...
by althus
Sun May 14, 2017 4:23 am
Forum: Main Lobby / General Discussions
Topic: Emulation of old (OLD!) chess computers and programs
Replies: 50
Views: 19355

You might be aware of this already, but there are many downloadable emulators of PDP systems, which were the machines that a lot of 60s-70s programs ran on. Just google PDP emulators and discover. A while ago I tried one myself, because I happened to be interested in the very same thing as you: the ...