using a turbo grafx joystick on a pc engine

[c0ldb33r]

I'd suggest tracking down one of the old TG16 to Duo adapter cords that TTI distributed, should work

I've been checking around for them and can't fine any.

I don't see why you couldn't swap/solder the wires of the Japanese Multi-Tap with the US version?

That's the plan. I ordered a duo tap from eBay. If it doesn't work, my worst case scenario is that I've purchase a duo tap, which I'd like to have anyway.

I'll post results once I get it.