Victor HC-A602S impose feature works in Yamaha CX-5F, at least for Thunder Storm VHD game. So more computers for VHD game play.
But not sure what is wrong with the superimpose, as the game graphics are not showing correctly (same problem as in Victor HC-7 case). So maybe have to attenuate or amplify VHD player video out signal. Or add capacitors to rgb21 input. The balance knob in HC-A602S does not affect anything to superimposed picture.
The menu text shuold be like these:
I now tested with monitor out from HC-7, and the superimpose levels are correct then.
The monitor out pinout in our wiki is wrong still as pinout should be mirrored. Even our wiki points to japanese page to make the cable, and in that page there is correct pinout, so why in our wiki it is incorrectly mirrored?
https://kei-sakaki.jp/2017/04/06/make-monitor-cable-for-yama...
Anyway not sure what is wrong with my rgb21 to scart cable, have to double check.
And the superimpose knob (P/S) did not have any effect to picture, so for what purpose it is?
Superimpose module has stereo audio output, this is pinout from the adapter side female connector view:
