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  • Re: Overclocking the Membership Card

    Mark: if you have 1802s you might try one of them- I think they are generally better with higher clock speeds. On Oct 18, 2017, at 12:39 AM, Mark Abene

    bill_rowe@rogers.com 11 hours ago
  • Re: Overclocking the Membership Card

    Just quickly tried 14.31818, and there was no response from the console. Looks like 12 MHz is my speed limit. -Mark

    markabene@ymail.com 19 hours ago
  • Re: Overclocking the Membership Card

    While I was encouraged by Ian's results, you're correct, it was totally free beer that my system works at 12 MHz. Among my spare parts I have 14.31818 and

    markabene@ymail.com 1 day ago
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Group Description

The RCA CDP1802 COSMAC microprocessor 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 --- including a complete archive of Ipso Facto newsletters. 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.

Group Information

  • 981
  • Computers
  • Dec 30, 2001
  • English

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