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Thread: Smoke Signal Broadcasting SS50 VDO card 6809

  1. #1
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    Default Smoke Signal Broadcasting SS50 VDO card 6809

    Folks,

    I have had a couple of these on the shelf for a while. They are labeled VDB-1. Any one have any info.

    Pictures here:-

    https://1drv.ms/u/s!Ag4BJfE5B3onmNlT...7nAnA?e=BmM9Am


    sorry some of them are fuzzy...
    Dave
    G4UGM

    Looking for Analog Computers, Drum Plotters, and Graphics Terminals

  2. #2
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    Default

    I googled "smoke signal broadcasting" "vdb" and found quite a bit of information.

    The Smoke Signal Broadcasting VDB-1 Video Display Board provides the user with a convenient means of displaying information on a standard B/W video monitor The VDB-1 is fully assembled, Endurance-Certified, then tested. It contains all the necessary logic (hardware and software ) for controlling the display. The board comes standard with a character set of 96 ASCII and 32 graphic characters. The user can install his own set of up to 256 character s in EPROM. Additional standard features include:

    • 1k EPROM for software drivers
    • Reduced intensity or inverted video
    • 80 x 24 (1920 characters ) display
    • Programmable display rate equivalent to 100 to 50k baud
    • Protected fields
    • Addressable cursor
    • 128 bytes of scratch pad RAM
    • 2k video display RAM accessible by the CPU as standard RAM memory

    SPECIFICATIONS:
    Output Signal: Video ( 1 V p-p into 50 ohms )
    Input Volts: 7.5 min, 10 max
    Input Current: 0.9A
    Size: 22.9 x 14.0 cm (9 x 5.5-in)
    Approximate Shipping Weight 9 kg (2 lbs)
    Member of the Rhode Island Computer Museum
    http://www.ricomputermuseum.org

  3. #3
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    Default

    Quote Originally Posted by m_thompson View Post
    I googled "smoke signal broadcasting" "vdb" and found quite a bit of information.

    The Smoke Signal Broadcasting VDB-1 Video Display Board provides the user with a convenient means of displaying information on a standard B/W video monitor The VDB-1 is fully assembled, Endurance-Certified, then tested. It contains all the necessary logic (hardware and software ) for controlling the display. The board comes standard with a character set of 96 ASCII and 32 graphic characters. The user can install his own set of up to 256 character s in EPROM. Additional standard features include:

    1k EPROM for software drivers
    Reduced intensity or inverted video
    80 x 24 (1920 characters ) display
    Programmable display rate equivalent to 100 to 50k baud
    Protected fields
    Addressable cursor
    128 bytes of scratch pad RAM
    2k video display RAM accessible by the CPU as standard RAM memory

    Thanks, Thats interesting as I have found SSB adverts but not found one with as much info as that.
    It would be nice to know what the io addresses are and how the eprom works...
    I guess the next step might be to dump it and try dis-assembly...

    Dave
    Dave
    G4UGM

    Looking for Analog Computers, Drum Plotters, and Graphics Terminals

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