incorporate unofficial nester stuff
get jumptable cpu core to compile
clean up src code
work on timing
  cobra triangle has a garbage line on title screen
  smb3 jitters
smoother fullscreen/windowed transition
resync to vsync
make sure shortcuts don't mess up fullscreen
make sure only valid video cards are listed - DirectDrawEnumerateEx
problem with controls (Mad Max)
zapper support
fullscreen garbage in DX5,6,7 (3?)
DDCAPS2_FLIPNOVSYNC, DDFLIP_NOVSYNC
optimize double size
make sure all vid writes are aligned
check for mem leaks
check dialog tab order
netplay
DDSCL_NOWINDOWCHANGES weirdness
< 60hz
windowed DirectDraw
