BugID: #04506

there are some weird behaviour in nemesis

1) Level 1 boss have a strange behaviour. It hits the top of the screen
after a while it's core become grey and you can kill it with a single shot

2) in level 2 there are misaligned sprites/background (turrets) when you move up and down

Here are some save states. Beware these are "about to die" saves :)

I think there a major timing problem in here
I've seen some videos of level 1 boss without such behaviour

the problem is quite old. I have tested a old MAME version (maybe 138u1)
with problem

Of course I can be wrong but it needs confirmation

Thank you