here’s an update. i guess if you guys are curious about any details maybe Mr Guru can provide some info.
http://www.emuline.org/topic/2974-emu-namco-system-246256-emulation-on-play-wip/
im not sure if this is outdated, but it looks like MagicGate is another hurdle.
here's some stuff to look at:
https://github.com/PCSX2/pcsx2/pull/4274
https://twitter.com/balika011/status/1369624516457078789
https://github.com/PCSX2/pcsx2/issues/3613
they say they'd need legal advice, so idk...
It took a while for me to get around to testing the device and posting here, but I'm pleased with the purchase. Thanks @djsheep
The device works as expected. I tested it on Super Dragon Ball Z for Namco System 256 using two controllers. Button remapping worked great.
Here's a test video...
i messaged Toyoshima to ask about the latency and this is was his response:
“so there are 2 kinds of the sources of the latency. one is on JVS bus, and the other is one for the IO board to actual controller switches. on iona, the former one is about 3ms, and the other depends on USB devices...