TTL RGB ==> PC

[Gordon JC Pearce]

On Thu, 2007-11-15 at 23:02 -0600, Jim Leonard wrote:
> Alexis wrote:
> > 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).

We made a bodge cable for RGBI to analogue RGB.  It's just some
resistors, really.

Gordon