What's New:
And what took me so long ? Finding something to use for the sh2 emulation in 64 bits, and it was not easy !
Finally I took the sh2 emulation from an old mame version (153), and modified it to be compatible with what gens did, so that it's compatible with the psikyosh driver. The result is slightly slower than the asm version, but not by a lot, so it will do for now. I lost a lot of time with yabause which I looked at before that.
Except that the windows status bugs seem fixed for good for those who missed the latest update of this painful story in the forum, there was a binary specific for that.