dJOS wrote on 2022-08-26, 23:21:

Yes RGBs is analogue, however CGA is RGBi and that is TTL, not analogue. Your monitor just has both sets of decoder circuitry.

Certainly does but doesn’t help to make the 15khz analog signal compatible with vga

NightSprinter wrote on 2022-08-23, 20:15:

So, is there a reason why the background on a Tandy 1000 with this would be green? The device works, but I get a green background instead of black.image.jpg

The output on my T1000 is crisp an clear, why does yours look so ugly?
https://youtu.be/hvvvgLkbkzI