[comp.sys.ibm.pc] Color composite from a CGA

randy@ranhome.UUCP (Randy Horton) (11/24/86)

A few months ago, I posted a query about how to use a color monitor with
the composite output of a CGA card.  Not surprisingly, I received a number of
responses informing me that the composite output of a CGA (or clone) IS a
color signal.  I have finally discovered that yes, it is a color output, but
only in 40col mode.  As soon as I switch to 80col, the display will only
appear in B&W.  The resistor network that someone kindly suggested does not
work, and I cannot afford the > $500 for the RGB to composite converter that
someone else suggested.

My question now is, is there a way to make the CGA put out a color signal from
the composite output jack while in 80col mode?  
I must admit that I am rather dubious that this can be accomplished, but I
am loathe to get rid of a perfectly good, not too old, CBM composite
monitor.  This monitor is especially convenient since it has two switch
selectable inputs.  While I am waiting for a long compile, I just switch
the input to the C64 and play Zaxxon while I wait :-)                     

As always, any help would be appreciated.
-- 

(Randy Horton)      allegra|                        
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