Interrupt based.
Everybody gets equal time to run unless one thread ( ie: a game ) requests it all.
Shifts through the table in round-robin ( no process takes precedent ).
Threads can end their turn early by sending a signal to another thread.
Threads have states, these are:
	0 - Null		- no thread in this part of the table.
	1 - Zombie		- terminated but remains loaded in the process table.
	2 - Stopped		- process has ended and is ready to be removed.
	3 - Running		- Is currently processing. Could have received signal or just be straight out running.
	4 - Interruptable	- Waiting for signal
	5 - Uninterruptable	- Waiting for the hardware status to change
Each thread has it's own stack and registers including the shadow registers.
Signals are a 8-bit value