Where did you find that info Gameblabla? It's really hard to find anything about it on the Internet because it was almost completely forgotten.
I found all the info here :http://forums.bannister.org/ubbthreads.php?ubb=showflat&Number=99891&page=1
Follow the thread for an interesting journey inside the Vidéoway.
He even tries to run the dumped ROM in MAME !
According to the decap, the Vidéoway has :
- A MC68A09EP processor (6809 based, 1.5 Mhz)
- 256Kb of Video Ram (a lot for 1989 !)
- 8Kb of Static RAM (Like the PC-Engine)
- A QSI chip labelled "LSI LOGIC CANADA" (Probably for handling video and sound)
It might be possible to play some games by replacing the ROM chip but other than that,
it's a dead old brick.