[Coco] CoCo 3 RGB to CGA conversion
exwn8jef at gmail.com
Sat Mar 14 19:17:59 EDT 2009
Fellow CoCo users,
Last night my faithful CM-10 monitor let out some smoke (if you know
what I mean, LOL). The only other monitor I had laying around was my IBM
5153 CGA Color Monitor. I plugged it into my homebrew CoCo tower and I
have video but the colors are off. I compared the pin assignments on the
IBM monitor to the CoCo 3 RGB outputs and all pins are the same except
pins 6 and 7.
On my CoCo tower I wired up a DB9 connector to plug my CM-10 into.
IBM 5153 CoCo 3 RGB connector
pin 6 = Intensity pin 6 = Polarity
pin 7 = Reserved pin 7 = Sound
So I need to remove wire to pin 7. What should I do about pin 6?
H-freq is 15.75 khz, and V-freq is 60 hz on the 5153 monitor.
N8WQ - Canal Winchester, Ohio
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