You don't have MemSize set my friend ;-). I think VoodooMem can be 8MB as you and i have, and MemSize can be 15. I read it somewhere (graphics card memory -1MB).
If VoodooInt=Yes you can't play WHDLoad games. What does Warp3D=Yes -variable do?
I also read that MMU-Warp3D -libraries could interfere even if you set the NOMMU-variable. :-?