[comp.os.cpm] Osborne 1 ext video

tindle@ms.uky.edu (Ken Tindle) (03/10/90)

I have inherited an Osborne 1- however...

I do not have anything to put on the "ext video" card edge, which very
much makes it worthless.

What I would like would be an adapter that actually sent out composite
video, I've already got a suitable 12" monitor.  But beggars cannot be
chosers, so if I can just fire up the internal 5 incher, so be it...

It's cute that Osborne does not provide a pinout, or at least they could
have designed the silly thing so the internal was active w/o a plug!  Not
very nice.

I realize one cannot send schematics by ascii mail- I'll pay for this info
by regular mail if someone has a schematic and is in a giving mood.  I
assume the internal monitor can be activated with some simple jumpers,
tho God only knows which pins to jumper!

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INTERNET:tindle@ms.uky.edu | "Could you please continue the petty bickering?
BITNET: tindle@ukma.bitnet |  I find it most intriguing."   ---    Data, 
Ken Tindle - Lexington, KY |  Star Trek, The Next Generation, "Haven"
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wade@hpfcbig.SDE.HP.COM (Wade Satterfield) (03/16/90)

To make the internal monitor of your Ozzy work you only need to jumper all
of the pins on the top side of the edge connector to each of the pins on the
bottom side.  I think this means hook 1 to 2, 3 to 4, 5 to 6. ...  I
have all of the Ozzy schematics but not here.  Only two of the pins are
needed to drive a normal monitor.  You could get plugins for RCA connectors
from many places.

I would try to contact someone at FOG (first Osborne Group) for vendors
that still sell such things.  I think FOG is listed in the computer shopper