nyuller/docs/c64/vic/vic_registers.md

VIC-II Register Map ($D000–$D3FF)

Source: https://www.c64-wiki.com/wiki/Page_208-211

Page 208-211 covers the memory locations 53248-54271 ($D000-D3FF). This area is wholly reserved for the VIC-II Registers. The 47 registers are mirrored every 64 bytes in this area.

Register Table

Hex	Dec	Type	Bit7	Bit6	Bit5	Bit4	Bit3	Bit2	Bit1	Bit0	Contents
$D000	53248	Register						M0X			X Coordinate Sprite 0
$D001	53249	Register						M0Y			Y Coordinate Sprite 0
$D002	53250	Register						M1X			X Coordinate Sprite 1
$D003	53251	Register						M1Y			Y Coordinate Sprite 1
$D004	53252	Register						M2X			X Coordinate Sprite 2
$D005	53253	Register						M2Y			Y Coordinate Sprite 2
$D006	53254	Register						M3X			X Coordinate Sprite 3
$D007	53255	Register						M3Y			Y Coordinate Sprite 3
$D008	53256	Register						M4X			X Coordinate Sprite 4
$D009	53257	Register						M4Y			Y Coordinate Sprite 4
$D00A	53258	Register						M5X			X Coordinate Sprite 5
$D00B	53259	Register						M5Y			Y Coordinate Sprite 5
$D00C	53260	Register						M6X			X Coordinate Sprite 6
$D00D	53261	Register						M6Y			Y Coordinate Sprite 6
$D00E	53262	Register						M7X			X Coordinate Sprite 7
$D00F	53263	Register						M7Y			Y Coordinate Sprite 7
$D010	53264	Register	M7X8	M6X8	M5X8	M4X8	M3X8	M2X8	M1X8	M0X8	MSBs of X coordinates
$D011	53265	Register	RST8	ECM	BMM	DEN	RSEL	YSCROLL			Control register 1
$D012	53266	Register		RASTER							Raster counter
$D013	53267	Register		LPX							Light pen X
$D014	53268	Register		LPY							Light pen Y
$D015	53269	Register	M7E	M6E	M5E	M4E	M3E	M2E	M1E	M0E	Sprite enabled
$D016	53270	Register	-	-	RES	MCM	CSEL	XSCROLL			Control register 2
$D017	53271	Register	M7YE	M6YE	M5YE	M4YE	M3YE	M2YE	M1YE	M0YE	Sprite Y expansion
$D018	53272	Register	VM13	VM12	VM11	VM10	CB13	CB12	CB11	-	Memory pointers
$D019	53273	Register	IRQ	-	-	-	ILP	IMMC	IMBC	IRST	Interrupt register
$D01A	53274	Register	IRQ	-	-	-	ELP	EMMC	EMBC	ERST	Interrupt enabled
$D01B	53275	Register	M7DP	M6DP	M5DP	M4DP	M3DP	M2DP	M1DP	M0DP	Sprite data priority
$D01C	53276	Register	M7MC	M6MC	M5MC	M4MC	M3MC	M2MC	M1MC	M0MC	Sprite multicolour
$D01D	53277	Register	M7XE	M6XE	M5XE	M4XE	M3XE	M2XE	M1XE	M0XE	Sprite X expansion
$D01E	53278	Register	M7M	M6M	M5M	M4M	M3M	M2M	M1M	M0M	Sprite-sprite collision
$D01F	53279	Register	M7D	M6D	M5D	M4D	M3D	M2D	M1D	M0D	Sprite-data collision
$D020	53280	Register	-	-	-	-	EC				Border colour
$D021	53281	Register	-	-	-	-	B0C				Background colour 0
$D022	53282	Register	-	-	-	-	B1C				Background colour 1
$D023	53283	Register	-	-	-	-	B2C				Background colour 2
$D024	53284	Register	-	-	-	-	B3C				Background colour 3
$D025	53285	Register	-	-	-	-	MM0				Sprite multicolour 0
$D026	53286	Register	-	-	-	-	MM1				Sprite multicolour 1
$D027	53287	Register	-	-	-	-	M0C				Sprite 0 colour
$D028	53288	Register	-	-	-	-	M1C				Sprite 1 colour
$D029	53289	Register	-	-	-	-	M2C				Sprite 2 colour
$D02A	53290	Register	-	-	-	-	M3C				Sprite 3 colour
$D02B	53291	Register	-	-	-	-	M4C				Sprite 4 colour
$D02C	53292	Register	-	-	-	-	M5C				Sprite 5 colour
$D02D	53293	Register	-	-	-	-	M6C				Sprite 6 colour
$D02E	53294	Register	-	-	-	-	M7C				Sprite 7 colour
$D02F-$D03F	53295-53311	Unused	($FF on read, ignored on write)
$D040-$D3FF	53312-54271	Same as $D000-$D03F (mirror every 64 bytes)

Notes

• The bits marked with '-' are not connected and give "1" on reading.
• The registers $D01E and $D01F cannot be written and are automatically cleared on reading.
• The RES bit (bit 5) of register $D016 has no function on the VIC 6567/6569. On the 6566, this bit is used to stop the VIC.
• Bit 7 in register $D011 (RST8) is bit 8 of register $D012. Together they are called "RASTER". A write access to these bits sets the comparison line for the raster interrupt.