just to add a couple of other known problems:

* Go Go Ackman 2 gets stuck at title screen
* Super Mario All Starts has weird scrolling glitches (not only on the top line)

since I still cannot follow 100% the way MESS emulates SNES, in the weekend I was planning to move a few more bits into the snes_ppu struct (reducing direct accesses of video/snes.c routines to snes_ram)

it should not affect speed and I could spot more easily if any register is still doing something different compared to what Anomie's docs & Byuu's source document as correct