None. The CGA monitors worked only with
RGB video. The old monochromes used the same plug, but used
video on pin 7, which is unused in the color monitor.
The 2 monitors used distinct video cards. Monochrome would be
developed
on the video card.
"steven67@" <steven67@REMOVE_THISmindspring.com> wrote in message
news:3FB6CEFB.88674056@REMOVE_THISmindspring.com.. .
> Joseph Fenn wrote:
>
> > Which pin on the db9 plug coming out of the old Tandy CGA monitors
> > actually supplies the mono video signal? I understand it will
display
> > a mono/chrome very nicely on my Commodore128 computer. Its cord
> > is internally wired, so its not removable, but ends in a DB9 mail
> > plug.
> > Joe (aka kilroy)
>
>
> .
>
>
> Information about Tandy monitors, including pinouts, can be here:
>
http://www.radioshack.com/ProdSuppor...s&D=2511&T=htm
>
>
>
> TinyURL version of the above link: http://tinyurl.com/v64c
>
>
>
>