FF8000	EPROM
FFA000	RAM
FFC000	SDR
FFC040	PDR
FFC042	PSR
FFC044	ESR
FFC048	DER
FFE000	IOPG

1	NXM
2	Par Err
4	Len Err
8	No Inst
10	No Data
20	Priv
40	Wrt Prt
80	Pg Flt

1	Seg On
2	BINIT En
4	LTC En
8	PI En
10	Frc Par
20	Frc DMA
40	BPOK On
80	BHALT On

7FFF	Base
7FF	Length
800	Down
1000	No Data
2000	No Inst
4000	Super
8000	Wrt Enb

1	BR4
2	BR5		
3	BEVNT
4	BR6
5	BR7
6	BHALT
7	BPOK