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Thread: Netronics Explorer Help

  1. #1
    Join Date
    Jan 2019
    Saint Petersburg, FL
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    Default Netronics Explorer Help

    I found this Explorer 85 at a yard sale... nobody knew what it was. I had some idea when I saw the floppy drives, and a google search came up with 8085 computer.

    I couldn't pass it up, but the computer was missing the CPU and several other IC's. There is some very terrible work in there. I believe it came from a a technical school's electronics repair class.

    To me, the board looks unfinished. Looks like the ram was never installed?

    The blue cover (not pictured) does not have the key lock on the right. It's attached with only 2 screws in the back and tabs in the front.

    I'd like to repair (or finish) it.. I did find the manuals and rom images online.

    There is an internal power supply, with a fan, which I have not seen mentioned anywhere, but I did see it in the manual I downloaded online.

    I also acquired two 8" floppy drives (CDC-1), but no floppy controller board which I assume goes into the S100 slot.

    Any additional information would be great.

    Considering nearly all the IC's are missing, it will probably be a complete rebuild.

    Last edited by mykrowyre; March 13th, 2020 at 09:42 AM.

  2. #2
    Join Date
    Oct 2016
    Dutchess County, New York, USA


    Nice find! Should be an easy rebuild if you have the assembly instructions and none of the chips are all that "rare". I don't have an 8085 from them, but have their terminal board and Jaws 64K ram board for 1802 S-100 usage and I think the pwr supply would be +5, +/- 12 and maybe -5v outputs. Unless also supplied power for the floppy drives. Unless just unregulated and on-board reg's where used for regulating. The Quest Super Elf had option of on-board reg's or external regulated power supply.
    Crazy old guy with a basement full of Pentium 1 laptops and parts


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