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  • Re: C128 to VGA

    From Peter van Merkerk@merkerk@deadspam.com to comp.sys.cbm on Monday, July 14, 2003 13:33:08
    From Newsgroup: comp.sys.cbm

    Ok thanks for the info. Would it be possible to make a cable to a
    composite
    or svga input to a tv, maybe just using the luminance for an 80 column
    bw
    display?

    You can connect the 80 column output to a TV without tricky electronics
    since the scanrate of the C128 is the same as used by TV's. If you are satisfied with just black-and-white it is very simple; pin 7 on the RGBi
    port of the C128 outputs a composite BW signal (of the 80 column screen)
    which can be connected directly to a TV with a video input (e.g. SCART connector). For more details see http://www.hardwarebook.net/connector/av/c128rgbi.html. If you want
    color and your TV has a SCART connector that accepts RGB signals, you
    could try something like this: http://www.softwolves.pp.se/cbm/maskinvara/scart.en.html.

    Good luck!

    --
    Peter van Merkerk
    peter.van.merkerk(at)dse.nl


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  • From jledger@jledger@cyberstreet.com (Jeff Ledger) to comp.sys.cbm on Monday, July 14, 2003 14:23:30
    From Newsgroup: comp.sys.cbm

    No. The C128 RGBI isn't compatible with VGA. The C128 RGBI is digital RGB
    and VGA is analog RGB. But you can use a CGA or a EGA monitor with the C128 RGBI.

    Somehow I suspect this is a stupid question, but
    Is the CGA/EGA monitor directly compatible without custom cable?
    And does it work in 64 mode?

    Thanks
    Jeff
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  • From Peter van Merkerk@merkerk@deadspam.com to comp.sys.cbm on Monday, July 14, 2003 23:49:54
    From Newsgroup: comp.sys.cbm

    No. The C128 RGBI isn't compatible with VGA. The C128 RGBI is digital
    RGB
    and VGA is analog RGB. But you can use a CGA or a EGA monitor with the
    C128
    RGBI.

    Somehow I suspect this is a stupid question, but
    Is the CGA/EGA monitor directly compatible without custom cable?

    A CGA monitor can be connected directly to a the C128. Things can be bit
    less straightforward with an EGA monitor, unless the monitor is dual mode
    (it can also be configured to accept CGA type signals).

    And does it work in 64 mode?

    No, you cannot directly connect the 40 column composite video output to a
    CGA or EGA monitor.

    --
    Peter van Merkerk
    peter.van.merkerk(at)dse.nl


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  • From Gmav@Gmav@ihug.com.au to comp.sys.cbm on Sunday, July 13, 2003 18:18:13
    From Newsgroup: comp.sys.cbm

    Is it possible to make a cable to go from the C128 RGB port to a VGA
    monitor?


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  • From Daniel Karlsson@daniel.j.karlsson@telia.com to comp.sys.cbm on Sunday, July 13, 2003 15:51:05
    From Newsgroup: comp.sys.cbm

    Gmav wrote:
    Is it possible to make a cable to go from the C128 RGB port to a VGA
    monitor?

    No. The C128 RGBI isn't compatible with VGA. The C128 RGBI is digital RGB
    and VGA is analog RGB. But you can use a CGA or a EGA monitor with the C128 RGBI.

    For pinouts: http://www.hardwarebook.net/

    Regards
    /djk




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  • From Peter van Merkerk@merkerk@deadspam.com to comp.sys.cbm on Sunday, July 13, 2003 20:38:32
    From Newsgroup: comp.sys.cbm

    You could make the cable, but it would work.

    Correction: it would NOT work.


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  • From Dave R.@watson@enteract.com to comp.sys.cbm on Tuesday, July 15, 2003 16:36:45
    From Newsgroup: comp.sys.cbm

    "Daniel Karlsson" <daniel.j.karlsson@telia.com> wrote in news:U2VQa.20453 $dP1.38565@newsc.telia.net:

    Just one problem: It doesn't exist. I'm going to buy one as soon as they
    come out though (or pre-order one as soon as that's possible).

    Same here. Allan Bairstow's updates on the project's progress have become teases. Especially the last one with the picture of the prototype board.

    :)


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  • From jledger@jledger@cyberstreet.com (Jeff Ledger) to comp.sys.cbm on Tuesday, July 15, 2003 17:35:50
    From Newsgroup: comp.sys.cbm

    Same here. Allan Bairstow's updates on the project's progress have become teases. Especially the last one with the picture of the prototype board.

    No kidding... That last one is about to become wallpaper. :)

    Jeff
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  • From A E@aeisenhut@videotron.ca to comp.sys.cbm on Tuesday, July 15, 2003 23:36:34
    From Newsgroup: comp.sys.cbm

    Peter van Merkerk wrote:


    No, you cannot directly connect the 40 column composite video output to a
    CGA or EGA monitor.

    If it's a monochrome CGA monitor, it plugs right in. I used to annoy the @#@#$ out of people at school in the early 90s. The hardware labs still had XTish machines hooked up to mono CGA monitors, to which I promptly plugged my hand painted zebra-striped VIC 20 to. Since I could write BASIC code to poke math derived values to memory, I was way ahead of the poor sods on the XTs with calculators using debug to enter bytes into memory...

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