Commodore.ca: The PET, VIC, 128, 64 & More Forum

Today I read numerous posts about potential solutions to convert the C-128 RGBI output to VGA. It seems that what is needed is two pieces of hardware. One that takes the RGBI signal and converts it to EGA. Then, another piece of hardware with accompanying wires (no idea how these are used) is required to convert that EGA to VGA. This configuration seems to satisfy some and not others.

I also tried to find a RGBI to HDMI solution. No luck.

I'd really like to get an 80 column display on my LCD TV if possible. I found a cable that might work by converting the RGBI output to a S-Video connector, and two RCA connectors for audio (I think!). I emailed the seller to see if that is how the cable works. It's unclear in their product description, and the photo of the product shows coiled cables that I am unable to follow from one end to the other.

Does anyone else have something they have seen, or are using, that you would recommend?

Thank you!

Joe

Here is what I recommend, the BIT-C128 Video DAC

http://www.bit-c128.com/

Truly,

Thank you!

I did find this after my post: https://www.tindie.com/products/cyberne ... converter/

And I received this reply to my question about needing a 9-pin male/male straight through to connect it to the C128: "It definitely does work with the c128 and there is a specific RGBi profile for them. It uses the same straight thru DB9 cable as CGA, which is basically a serial cable."

It ships from Australia. The developer is taking time to recover from surgery, and is hopeful to be back at it on March 18, 2023.

Joe

There would be a third option: if your display has RGB capable SCART input, then an RGBI to RGB converter can be used directly,
without need of a scan/line frequency doubler. SCART directly is compatible with the ~15kHz line frequency that the C128 produces.

commodore.ca discussion

HDMI converters will add some conversion delay. Ultra low latency converter is recommended for gaming.

JoeGUSA wrote: ↑Thu Mar 16, 2023 2:39 pm I did find this after my post: https://www.tindie.com/products/cyberne ... converter/

And I received this reply to my question about needing a 9-pin male/male straight through to connect it to the C128: "It definitely does work with the c128 and there is a specific RGBi profile for them. It uses the same straight thru DB9 cable as CGA, which is basically a serial cable."

Does it take into account the C128's brown color? The CGA color palette is different.

Truly,

I'm not sure. I'll have to order one and find out, when I get my 128 back from repair.

Joe