16 Nov
2007
16 Nov
'07
11:50 p.m.
Gordon JC Pearce wrote:
On Thu, 2007-11-15 at 23:02 -0600, Jim Leonard wrote:
What was the pinout/schematics of such a cable? How did you handle the
intensity bit?
--
Jim Leonard (trixter at oldskool.org) http://www.oldskool.org/
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Alexis wrote:
We made a bodge cable for RGBI to analogue RGB. It's just some
resistors, really. There's a line of chip from Analog Devices,
AD273/AD274/AD275 and others,
which will convert from RGB to NTSC/PAL. It gives composite and split video
outputs. They're in the US$5 range. Perhaps this could be used with my
previous circuit that converts TTL to analogue?
Possibly, but I'm still not
sure that it would handle the intensity bit
of CGA (RGBI).