Newsgroups: comp.sys.ibm.pc
Path: utzoo!utgpu!tj
From: tj@gpu.utcs.utoronto.ca (Terry Jones)
Subject: Re: IBM CGA composite output
Message-ID: <1991May3.164628.10141@gpu.utcs.utoronto.ca>
Organization: UTCS Public Access
References: <1991Apr24.232935.7148@cbnewsj.att.com> <1710010@hpcc01.HP.COM> <1991May2.191320.9661@cec1.wustl.edu>
Distribution: na
Date: Fri, 3 May 1991 16:46:28 GMT

As has been pointed out, the CGA composite is colour, but it should also
be added that You may not see colour unless the motherboard clock is exactly
correct. The 3.579 colourburst signal is tied to the clock signal fet to
the board somehow (don't ask me, this is just my experience). I had to adjust
the tiny trim cap on the MOTHERBOARD to get colours.