[Coco] Dual monitors on a Coco 3?

[Nick Marentes]

On 14/03/2017 3:37 AM, Rod Barnhart wrote:
> Not entirely true. You could do dual monitors on the original 5150, if you
> had both an MDA card and a CGA card, so one would be monochrome and the
> other color.


The original IBM CGA card had RGB and Composite video which worked 
simultaneously.

The CoCo3 had 3 video outputs (RGB, Composite and RF) but they were all 
from the 1 output source (the GIME).

The only way to get more than 1 is to plug in a second video controller 
such as the 80 column cartridges (mainly for CoCo1 & 2) or use OS-9 to 
output to multiple external terminals via serial.

Nick