Why do you need a Custom SH2 when you can run games from a standard SH2!!!!!
Proof of concept here: http://youtu.be/TkziJzE-baQ
Thanks to Mitsu-w who made all the soldering, testing shild I was working on the BIOS. He is the best supporter ever.
I have 95% ready the new multi-game BIOS that will run all 6 games from 1 single CD (yes all 6 inside one unique CD).
I will adapt this BIOS so it will run also from standard SH2.
This opens the door to many features:
The most important one, no tables are needed anymore and the games will be working 100% as in the original.
The second, we can easily edit or modify the SH2 code directly.
The third one, for the purists, we can include a routine to decrypt 'on the go' the games using original CDs.