[Coco] CM-8 Monitor Specs

[Torsten Dittel]

> Hm, I'd really like to see a CoCo 1/2 with RGB output. How hard is this
> to do?

I have some RGB CoCos 1B,2,2B and even RGB MC-10s. All are French PAL
machines. The circuit is replacing the RF modulator and it doesn't look
too complicated. Some pictures of the RGB CoCo 2b board:

http://www-users.rwth-aachen.de/Torsten.Dittel/CoCo/pcb_compl1.jpg
http://www-users.rwth-aachen.de/Torsten.Dittel/CoCo/pcb_compl2.jpg

and for some details:

http://www-users.rwth-aachen.de/Torsten.Dittel/CoCo/pcb_detail1.jpg

(shows the 12V generation part which are used to select the SCART RGB
mode)

http://www-users.rwth-aachen.de/Torsten.Dittel/CoCo/pcb_detail2.jpg

(shows the RGB color mixing part)

The rest of the board looks like any Coco 2b board.

For those interested, here are the MC-10s:

http://www-users.rwth-aachen.de/Torsten.Dittel/MC-10/PICT0001.JPG
http://www-users.rwth-aachen.de/Torsten.Dittel/MC-10/PICT0002.JPG
http://www-users.rwth-aachen.de/Torsten.Dittel/MC-10/PICT0003.JPG
http://www-users.rwth-aachen.de/Torsten.Dittel/MC-10/PICT0004.JPG

Picture 1 shows both versions side by side: RGB version - left, "Normal"
PAL version - right
Picture 2 shows the RGB version
Picture 3 shows the "Normal" PAL version
Picture 4 shows the RGB color mixing circuit

Looks like Tandy made a completely new board layout for the RGB
version...