08/13/88: MONITOR by Delphi, | Category: Delphi - Hardware Hacking | 3 comments - (Comments are closed)

MONITOR

44090 13AUG88-1743 Hardware Hacking
MONITOR
From: REBECCA To: ALL

I HAVE A COCO III AND HAVE BEEN GIVEN A COMMODORE 1802 MONITOR. IT HAS THREE
WAYS IT WILL WORK : COMPOSITE, SEPERATED LUMA & CHROMA AND MONOCHROME. IS
THERE ANY WAY TO HOOK THE III UP TO THE SEPERATED? MAYBE OUT OF THE RGB PORT?
THANKS!!

3 comments to MONITOR

  • pucc_unknown

    44106 13AUG88-1957 Hardware Hacking
    RE: MONITOR (Re: Msg 44090)
    From: 6809ER To: REBECCA

    For the most part, you can not use the composite output of the Color Computer
    3 to drive the seperated Luma & Chroma on the 1802 monitor. At one time, there
    was a monochrome driver (by Marty Goodman) that will let a Color Computer 1/2
    drive this type of input with very good display. Marty may know if this
    driver could be used on the Color Computer 3.
    The best display you will ever get on the 1802 is only 40 cols, not 80.

    Steve

  • pucc_unknown

    44110 13AUG88-2155 Hardware Hacking
    RE: MONITOR (Re: Msg 44090)
    From: COCONAUT To: REBECCA

    Although I know of no way to make your monitor work, if you want 80 cols.
    and can live with a monochrome monitor, the Magnavox 7622 Amber Screen that you
    will find advertized in RAINBOW gives a quite satisfactory display (I speak from
    experience, that’s what I’m using). I believe there is also a green screen
    version available if you prefer. Howard Medical has them available for under
    $100. including shipping, and I found them to be quite pleasant and prompt in
    their service.

    Doug Fisher

  • pucc_unknown

    44124 14AUG88-0610 Hardware Hacking
    RE: MONITOR (Re: Msg 44090)
    From: MARTYGOODMAN To: REBECCA

    I’m not specifically familiar with the Commodore 1802 (I once owned
    a 1702 and have some familiarity with the 1902). However…
    unless the monitor has an RGB A input it will be of little use
    to you for anything except low resolution graphics, via the
    composite video input on the monitor and comp video output
    on the CoCo. The separate Chroma and Luma input will
    be of NO use to you for the CoCo, for that protocol is
    not used by the CoCo at all.

    The very newest Commodore Amiga monitors do have RGB analog inputs,
    and ARE suitable for use with a CoCo.

    —marty