Re: Monitor

[dempson@actrix.gen.nz (David Empson)]

Steve Townsend <steve.townsend@rook.wa.com> wrote:

>     
>     
>      I have a Commodore Color Monitor, Model 1092A.
> It has a toggle switch in front to switch from CVBS to RGB
> mode.  It works great on a IIe, but only has 40 columns when I
> use the simple RCA monitor port in back.
>      I suspect that if I put it on a IIc, a IIe with the RGB
> card, or a IIgs, I could have a much better monitor.  In order
> to do this however, I would need to build a cable and use one
> of the other two cable ports on the back.  Both of the RGB
> ports are round.  Port (1) has 8 pins, and port (2) has 5
> pins.
>      Can anyone tell me the function of the pins in each of
> these ports?  I have the pinouts for the IIe, IIc, and IIgs
> RGB cables, so I am okay on that end.  I just need to know how
> to connect them to one of the ports on the monitor.

The IIc doesn't have RGB output - its video expansion port is designed
to connect to a LCD display or to an external converter box which
generates the appropriate type of video signal.  There are RGB adaptors
available, for both analog and digital RGB.

The IIgs has analog RGB video support.  The IIe can have digital RGB
support added by using an appropriate card in the auxiliary slot.  (The
Apple III has digital RGB output.)

Does the Commodore monitor expect to work with digital or analog RGB?

-- 
David Empson
dempson@actrix.gen.nz
Snail mail: P.O. Box 27-103, Wellington, New Zealand