cosmacelf : COSMAC ELF and 1802 Microcomputing

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3 New Members - 70 New Messages - 5 New Files

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The RCA CDP1802 microprocessor (also known as "COSMAC") was the basis for several hobbyist computers in the mid 70s and early 80s. Join this group to discuss these old computers or share your 1802 experiences.

Visit cosmacelf.com for more on the history of 1802 microcomputing, data sheets, articles, photos, and more. You can find various emulators of ELF computers at elf-emulation.com (Unix/Windows), TinyELF.com (Mac OS X), and in the Files area of this group. There's even a simulator in Javascript that will run right in your browser.

Please note that due to some abuses of this forum, initial posts by new members will not appear until approved by a moderator. We regret that the actions of a few spammers have resulted in this inconvenience to the community.

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Re: Problem with my Elf2k CF Memory Card Hi Mark, Thanks for responding. The CF card is inserted directly into the CF slot on the elf2k disk card. The green light lights up, and blinks fine. I wish Posted - Tue May 21, 2013 7:02 am	Craig Ledbetter craigledbett... Send Email
Re: Problem with my Elf2k CF Memory Card Hi, ... By any any chance is your card in a cf-IDE adapter, or is it directly on the elf disk card? The IDE adapters require power, either via a separate Posted - Tue May 21, 2013 2:43 am	Mark G Thomas markt19422 Send Email
Re: I have an 1864CE Colour Pixie chip to sell, or swap for an 1805/ Hi Craig, If you haven't gotten any other offers yet, I'd be happy to swap an 1805 for the 1864. ... Josh Posted - Mon May 20, 2013 10:49 pm	joshbensadon Send Email
Question about programming the Dallas DS12887A chip I was trying to figure out how to program Dallas DS12887A chip on the IDE board of the Elf2k to produce a steady interrupt to the 1802. Can anybody help me? I Posted - Mon May 20, 2013 7:04 pm	Craig Ledbetter craigledbett... Send Email
Problem with my Elf2k CF Memory Card I am having a continual problem with my CF Memory Card. I can't get elf2kos 0.2.8 to work for me no matter what I do. I have used both a 512MB Transdata CF Posted - Mon May 20, 2013 6:46 pm	Craig Ledbetter craigledbett... Send Email
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