One of them is a fix for a really odd bug with the proprietary z80 core :
Pause button would not work.
For some reasons, executing the irq line functions will not work if
put in a function so what i did was a bunch of macros instead.
This now works and reduces the complexity of the code kinda.
(Also inlining)
There's also a fix for the ALSA code. On the bittboy,
it woud sometimes underrun. When it does so, it becomes mute.
Fixed this by handling underruns and removing non blocking.
(Useless anyway here)
