ITotalJustice

Will add more to this issue when I have chance to work to on this emulator again. There's a vdp test rom that tests a bunch of things. I pass...

Most games use it for rng so I lazily implemented it. Some games which are broken such as xenon 2 repeatedly do LD_AR which loads R into A.

crashes after this screen 

add region detection support (port 0x3F)

1

so games will write to port `$3F` and then read back the value. if the same value is read back, then it is not japanese system

Long list of supported games here

Sonic 2 - Freeze if pausing when finishing a level

1

for example, pausing here will cause the feeze. 

not finished yet, runs slower in some games (tetris, shantae) but faster in pokemon red. currently the events aren't sorted, which is the cause of the slowdown (though i didn't...