crumb you are right! I have a spare CV64 ! I totally forgot about the zorro part of the G-Rex4000D :-D
I will sacrifice the 512i sound card then :lol: :lol: :lol:
edit: better solution!
I grabbed a 2nd PicassoIV so I replace the Arxon scandoubler
on 3.9 it will only work as a scandoubler with voodoo3
on MOS it will be dead, as only voodoo3 is needed
and on OS4 it will work as a sd/ff+pIV :-D
I think it will work great, and I get to keep the 512i :-D