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  1. clueless_engineer (Brett)

    [Thomson MO6] Adding audio-in to load WAV files without a LEP

    The Thomson MO & TO range of computers (6809 based) have a similar cassette system to the Commodore - the cassette recorder (LEP) generates the TTL bitstream from the audio and passes it to the computer, rather than the computer doing the work. If you have just the computer and nothing else...
  2. clueless_engineer (Brett)

    [MPF-1] Official archive site established {work-in-progress}

    Hi, Flite Electronics has set up an official archive site for their MicroProfessor MPF-1 range of trainers. Details of the modernised MPF-1C/1X will also be shared there. http://micro-professor.org/ From Ray (Flite's archivist):
  3. clueless_engineer (Brett)

    HP Portable Plus (Model 45711) - home-brew expansion drawers?

    Hello, I have a model 45711B that includes 128KB of base system RAM with an additional 128KB of expansion RAM via a 82981A memory drawer. Was wondering if anyone knew of home-brew versions of the 1MB expansion (82992A) and/or ROM expansion drawer (82982A)? There are schematics available in...
  4. clueless_engineer (Brett)

    Micro Palm Computers PC/4000 & PC/5000

    Hello. Wondering if anyone has any information about these handheld IBM PC clones (running on 80C88s). I've got a PC/4000 and have made a few videos about it (see Github repository below if interested). I've collated all the information I've been able to find on my Github here...
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