[PLUG] hardware help--cga/composite adapter

[Chris McNett]

I've got an old monochrome monitor with a DB-9 plug.  Do you want it?

On Sun, 22 Apr 2001, John Cirillo wrote:

> This is a bit off the wall, but I am trying to recreate a little passive
> adapter I used to have. It had a DB-9 plug on one end that fit in a CGA
> output port on the computer, and the other end had an RCA jack that could be
> connected to a regular TV/monitor input jack.  It produced a monochrome image
> but was usable.  I am playing with Lunix on my old Commodore-128 but realized
> it is putting out signal on the 80-column (CGA) jack and not the 40-column
> composite jack. I do have a CGA monitor but it fell in a recent move and
> there are about 50 cracks on the PC board (luckily the CRT is intact!) but it
> is a slow process repairing the board. I know that adapter is around here
> somewhere, but I can't find it.  I'm guessing there were resistors from the
> R,G,B, h-sync, and v-sync pins all tied together somehow, but no idea what
> value of resistors to use.  Any ideas?
> 
> Thanks.
> 
> John
> ----------------------------------
> John Cirillo
> E-Mail: cirillo@purdue.edu
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