Name            ADD   R/W   CHIP  FUNCTION
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BLTDDAT	&*	000	ER	A	Blitter destination early read (dummy address)
DMACONR	*	002	R	AP	DMA control (and blitter status) read
VPOSR	*	004	R	A	Read vert. most significant bit (and frame flop)
VHPOSR	*	006	R	A	Read vert. and horiz. position of beam
DSKDATR	&*	008	ER	P	Disk data early read (dummy address)
JOY0DAT	*	00A	R	D	Controller 0 data (vert., horiz.)
JOY1DAT	*	00C	R	D	Controller 1 data (vert., horiz.)
CLXDAT	*	00E	R	D	Collision data register (read and clear)
ADKCONR	*	010	R	P	Audio, disk control register read
POT0DAT	*	012	R	P	Pot counter pair 0 data (vert., horiz.)
POT1DAT	*	014	R	P	Pot counter pair 1 data (vert., horiz.)
POTGOR	*	016	R	P	Pot port data read (formerly POTINP)
SERDATR	*	018	R	P	Serial data port and status read
DSKBYTR	*	01A	R	P	Disk data byte and status read
INTENAR	*	01C	R	P	Interrupt enable bits read
INTREQR	*	01E	R	P	Interrupt request bits read
DSKPTH	+*	020	W	A	Disk pointer (high 3 bits)
DSKPTL	+*	022	W	A	Disk pointer (low 15 bits)
DSKLEN	*	024	W	P	Disk length
DSKDAT	&*	026	W	P	Disk DMA data write
REFPTR	&*	028	W	A	Refresh pointer
VPOSW	*	02A	W	A	Write vert. most sinificant bit (and frame flop)
VHPOSW	*	02C	W	A	Write vert. and horiz. position of beam
COPCON	*	02A	W	A	Coprocessor control register (CDAND)
SERDAT	*	030	W	P	Serial port data and stop bits write
SERPER	*	032	W	P	Serial port period and control
POTGO	*	034	W	P	Pot port data write and start
JOYTEST	*	036	W	D	Write to all four counters at once
STREQU	&*	038	S	D	Strobe for horiz. sync with VB en EQU
STRVBL	&*	03A	S	D	Strobe for horiz. sync with VB (vert. blank)
STRHOR	&*	03C	S	DP	Strobe for horiz. sync
STRLONG	&*	03E	S	D	Strobe for identification of long horiz. line
BLTCON0	@	040	W	A	Blitter control register 0
BLTCON1	@	042	W	A	Blitter control register 1
BLTAFWM	@	044	W	A	Blitter first word mask for source A
BLTALWM	@	046	W	A	Blitter last word mask for source A
BLTCPTH	+@	048	W	A	Blitter pointer to source C (high 3 bits)
BLTCPTL	+@	04A	W	A	Blitter pointer to source C (low 15 bits)
BLTBPTH	+@	04C	W	A	Blitter pointer to source B (high 3 bits)
BLTBPTL	+@	04E	W	A	Blitter pointer to source B (low 15 bits)
BLTAPTH	+@	050	W	A	Blitter pointer to source A (high 3 bits)
BLTAPTL	+@	052	W	A	Blitter pointer to source A (low 15 bits)
BLTDPTH	+@	054	W	A	Blitter pointer to destination D (high 3 bits)
BLTDPTL	+@	056	W	A	Blitter pointer to destination D (low 15 bits)
BLTSIZE	@	058	W	A	Blitter start and size (window width, height)
	@	05A
	@	05C
	@	05E
BLTCMOD	@	060	W	A	Blitter modulo for source C
BLTBMOD	@	062	W	A	Blitter modulo for source B
BLTAMOD	@	064	W	A	Blitter modulo for source A
BLTDMOD	@	066	W	A	Blitter modulo for destination D
	@	068
	@	06A
	@	06C
	@	06E