Re: Rgb to vga

From: Chris Osborn <fozztexx_at_fozztexx.com>
Date: Sun, 15 Mar 2015 14:38:59 -0700
Message-Id: <C42B3156-D980-436F-BBBE-9B095C62E9B7@fozztexx.com>
On Mar 15, 2015, at 2:26 PM, Steve Gray <sjgray@rogers.com> wrote:

> That uses a commonly available GBS8200/8220 board which is available on ebay starting about $24USD. you would also have to build a small RGBI to RGB converter using a few diodes and resistors like this:
> http://www.frank-buss.de/c128/vdc/index.html

I've also got a similar circuit which uses the GBS-8200, but handles the special case to create brown that CGA does. I've also connected the circuit direct to my Sony KV-1311CR which does both CGA and analog 15khz RGB, and I can switch back and forth to compare the colors between real TTL CGA and my converter board and the colors are nearly identical.

https://github.com/FozzTexx/SeaGeelog

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