I reverted my last commit 6508. I was wrong, sorry about that. It is 3am maybe need to rest of the FIFO for while. My Apologies.
The STATUS_REGISTER should return the actual status HI (Overflow) and LO (underflow) watermark because this register can be polled by the game.
Possible FIX to randoms hangs, this correction in the clause fifo.bFF_Breakpoint=false fix hangs in WII Music, I don’t have WII sport resort, etc. Please test games with fifo hangs (FPS:0 VPS:99) in yours PC again. :D