CTIA/GTIA reference

CTIA/GTIA (Graphic Television Interface Adapter) reference

CTIA/GTIA register set:
		7	6	5	4	3	2	1	0
$D000 (R)	M0PF	unused ¹				Missile 0 to playfield collision
$D000 (W)	HPOSP0	Horizontal position of player 0
$D001 (R)	M1PF	unused ¹				Missile 1 to playfield collision
$D001 (W)	HPOSP1	Horizontal position of player 1
$D002 (R)	M2PF	unused ¹				Missile 2 to playfield collision
$D002 (W)	HPOSP2	Horizontal position of player 2
$D003 (R)	M3PF	unused ¹				Missile 3 to playfield collision
$D003 (W)	HPOSP3	Horizontal position of player 3
$D004 (R)	P0PF	unused ¹				Player 0 to playfield collision
$D004 (W)	HPOSM0	Horizontal position of missile 0
$D005 (R)	P1PF	unused ¹				Player 1 to playfield collision
$D005 (W)	HPOSM1	Horizontal position of missile 1
$D006 (R)	P2PF	unused ¹				Player 2 to playfield collision
$D006 (W)	HPOSM2	Horizontal position of missile 2
$D007 (R)	P3PF	unused ¹				Player 3 to playfield collision
$D007 (W)	HPOSM3	Horizontal position of missile 3
$D008 (R)	M0PL	unused ¹				Missile 0 to player collision
$D008 (W)	SIZEP0	unused						Player 0 size
$D009 (R)	M1PL	unused ¹				Missile 1 to player collision
$D009 (W)	SIZEP1	unused						Player 1 size
$D00A (R)	M2PL	unused ¹				Missile 2 to player collision
$D00A (W)	SIZEP2	unused						Player 2 size
$D00B (R)	M3PL	unused ¹				Missile 3 to player collision
$D00B (W)	SIZEP3	unused						Player 3 size
$D00C (R)	P0PL	unused ¹				Player 0 to player collision
$D00C (W)	SIZEM	Missile 3 size		Missile 2 size		Missile 1 size		Missile 0 size
$D00D (R)	P1PL	unused ¹				Player 1 to player collision
$D00D (W)	GRAFP0	Player 0 graphic data
$D00E (R)	P2PL	unused ¹				Player 2 to player collision
$D00E (W)	GRAFP1	Player 1 graphic data
$D00F (R)	P3PL	unused ¹				Player 3 to player collision
$D00F (W)	GRAFP2	Player 2 graphic data
$D010 (R)	TRIG0	unused ¹							/Trigger
$D010 (W)	GRAFP3	Player 3 graphic data
$D011 (R)	TRIG1	unused ¹							/Trigger
$D011 (W)	GRAFM	Missiles graphic data
$D012 (R)	TRIG2	unused ¹							/Trigger
$D012 (W)	COLPM0	Chroma				Luma			unused
$D013 (R)	TRIG3	unused ¹							/Trigger
$D013 (W)	COLPM1	Chroma				Luma			unused
$D014 (R)	PAL	unused ¹				$F (NTSC) / $1 (PAL)
$D014 (W)	COLPM2	Chroma				Luma			unused
$D015 (W)	COLPM3	Chroma				Luma			unused
$D016 (W)	COLPF0	Chroma				Luma			unused
$D017 (W)	COLPF1	Chroma				Luma			unused
$D018 (W)	COLPF2	Chroma				Luma			unused
$D019 (W)	COLPF3	Chroma				Luma			unused
$D01A (W)	COLBK	Chroma				Luma			unused
$D01B (W)	PRIOR	GTIA mode ²		Overlap	5th Pl.	Priority
$D01C (W)	VDELAY	P3	P2	P1	P0	M3	M2	M1	M0
$D01D (W)	GRACTL	unused					Latch Tr.	enable P	enable M
$D01E (W)	HITCLR	unused
$D01F (R)	CONSOL	unused ¹					/Option	/Select	/Start
$D01F (W)	CONSOL	unused				Reset?	unknown