GBS-8220 Why not work Ami vga modes

[Ral-Clan]

Maybe because the GBS-8220 is meant to convert 15-16 KHz modes to 30-35 KHz modes?   When the Amiga is in VGA-only driver mode it's sending a 30KHz signal out of its RGB port.  The 8220 probably doesn't "understand" how to deal with a signal at that frequency.

[Ral-Clan]

Is there a version of the GBS-8220 that accepts NTSC colour composite input and outputs to a VGA monitor?

Does it introduce any latency when playing video games?

[Ral-Clan]

You don't have to worry about NTSC/PAL color issues when you use RGB.
So, it works.

I was actually thinking of using the device with a ColecoVision modified to have composite out, so I was wondering about that.