CGA-to-VGA converter testing on various computers

g67wjjk · 30-12-2020, 11:57 AM

(30-12-2020, 11:07 AM)ChickenMan Wrote: What a fantastic outcome, well done, glad to hear the one unit can be used on so many other vintage computers other than Microbees, C128 and Amigas.

I'm pretty happy with it, doing exactly what I bought it for.

g67wjjk · 30-12-2020, 05:13 PM

For completeness, here it is running on the Amstrad CPC 6128 Plus with RGB output via 8-pin DIN.

g67wjjk · 30-12-2020, 07:25 PM

Working nicely on the Amstrad CPC464 with 6-pin DIN to CGA cable - same as for BBC Model B - requires the H_SYNC invert to be active.

CheshireNoir · 31-12-2020, 11:35 AM

I'm amused at the vast number of "CGA to VGA" adapter solutions suddenly coming out of the woodwork.
There's the Gonbes based one in this thread. There's the Raspberry Pi Zero one (See https://youtu.be/UBbkzDF0aWU?t=422 for a good overview. Available here: https://github.com/hoglet67/RGBtoHDMI/ . Mr Lurch explicitly mentions a version for the 'Bee) and I just made this one for my C128D: https://sites.google.com/site/h2obsessio...a/ultimate
(I have it plugged into my 15KHz monitor so I don't need to do any additional steps to the VGA signal to bring it up to a better refresh rate)

g67wjjk · 31-12-2020, 04:05 PM

Yeah, I saw H2O's one ... and you're right, there do seem to be a bunch recently ... everyone rediscovering the joys of CGA?

I just discovered you can get an RGB mod for the Atari 2600 locally (I've already modified my dad's original to output composite video) ...

My next step is to gut the monitor of my Amstrad PC1640 so I can get the 14-pin DIN power cable for a new power supply. Seems a shame as it's a perfectly working CGA/EGA monitor, but it's too big for me to keep lying around and it's too costly to send to someone else.