a05f6890.l: Written $00000fdf at a crash
a05f7480.w: Written $0400 during ROM bootstrap
a05f74e4.l: Written $001fffff before ROM->RAM copy

ff000030.l: Undocumented? some CCN register?



a05f688c.l
	bit 0	- G2 AICA fifo empty ?
	bit 5	- G2 fifo full ?

a05f6890.l	? (Written during ROM bootstrap, if fatal error?)


a05f74e4.l	? (Written during ROM bootstrap)
