Finally I got it, a working CD with some games, it's not yet perfect but many games run correctly.
So main features are :
- high speed (Cz80 use)
- 2 players support
- 32ko to 1Mo ROM support
- hardware tiles, sprites, map management
Things to add :
- syncho
- sound
I'm waiting for Rockin'-B skills with dual CPU and assembly(port of raze/faze ?) for these improvements
link removed as it has commercial games in it, your friendly neighbourhood Hawq