Fixing my Commodore 64

Posted on 9 Jun 2017 in | Comments Off on Fixing my Commodore 64

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This topic contains 5 replies, has 3 voices, and was last updated by  Justin Kerk 4 months, 1 week ago.

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  • #231

    Jim Bennett
    Participant

    John has my old Commodore 64 and I can’t wait for some folks to help out getting it to run!!!!! Think a lot of people would like to see it functioning and perhaps do some early programming on it!!!!!!

    Could also make a great publicity photo if we ever get it working.

    Hopefully it might even warrant a display location for the kickoff OPEN HOUSE on July 1…. just dreaming…

    jim.bennett@shaw.ca

    #236

    John
    Keymaster

    Hi Jim, thanks for the post. I’ll try to get the old adding machine on display, dirt and stains and all. It won’t be fixed up by then though, see how things go once we have the Space operational.

    #239

    Jim Bennett
    Participant

    We might need an old TV to hook up to the Commodore 64 for a real display of nostalgia and early days of digital….

    Meanwhile I know you need tables to put all these projects on and the “old cogger builder” and I are having discussions tomorrow afternoon to actually get some tables built SOON!….

    #259

    Justin Kerk
    Participant

    So I brought in my 1702 monitor, hooked up the C64, and it still works fine! I don’t really want to leave the monitor in the space but it should be relatively straightforward to order a video cable to get it going on a TV.

    Trying to read disks with the 1541 drive gave file not found errors though so I was only able to get software to load using my own 1541-II. It may just need to be cleaned or realigned. Only one out of the two joysticks seemed to be working as well.

    If you’re going to be around at the Wednesday drop-in or some other time I can bring in the equipment again and show you it in action.

    #260

    John
    Keymaster

    Great Job Justin
    What’s the difference between your commodore monitor and a regular monitor or tv – what kind of video signal does the commodore produce. In the UK they used to create a modulated output, not a cable type coax, just a video jack like an audio plug (can’t remember the name of those single pin things – DIN? ). I’m bringing in an older TV (still flat screen) with lots of input options – we can use it with that old CD/DVD Amp.
    John

    #261

    Justin Kerk
    Participant

    The C64 has two AV outputs:

    RF with an RCA connector:
    https://www.c64-wiki.com/wiki/RF_Jack
    This can be connected to the coaxial input on a TV using a normal RCA cable and a simple adapter like this: http://www.atari2600.com/ccp7/media/ecom/prodlg/ATA26HAR0027L.gif
    (These are pretty readily available, I’ve seen them at local dollar stores.)
    Picture quality is not great.

    An 8-pin DIN:
    https://www.c64-wiki.com/wiki/A/V_Jack
    https://www.c64-wiki.com/wiki/Audio-/Videoconnector
    This is what the Commodore monitor uses – it has separate luma and chroma pins so the picture quality is quite nice. Apparently it can be adapted to S-Video with a custom cable to allow for hookup to modern TVs.

    Generally a CRT TV is preferable for this kind of thing because LCDs show up any noise in the signal a lot more, and also the LCD TVs tend to do post-processing that looks OK for television programming but behaves poorly on large flat coloured areas and sharp transitions like you get from an 8-bit machine.

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