Board feature control

	Number	Readable	Writable
Active Video Line LSB Register	$1F	true	false
Active Video Line MSB Register	$1E	true	false
Alternate ROM	$8C	true	true
Anti-brick Register	$10	true	true
Board ID	$0F	true	false
CPU Speed Register	$07	true	true
Clip Window Control Register	$1C	true	true
Clip Window Layer 2 Register	$18	true	true
Clip Window Sprites Register	$19	true	true
Clip Window Tilemap Register	$1B	true	true
Clip Window ULA/LoRes Register	$1A	true	true
Config Mapping Register	$04	false	true
Copper Control High Byte	$62	true	true
Copper Control Low Byte	$61	true	true
Copper Data	$60	false	true
Copper Data 16-bit Write Register	$63	false	true
Core Version Register	$01	true	false
Core Version Register (sub minor)	$0E	true	false
DAC A+D (mono) mirror Register	$2D	true	true
DAC B (left) mirror Register	$2C	true	true
DAC C (right) mirror Register	$2E	true	true
DMA interrupt enable 0	$CC	true	true
DMA interrupt enable 1	$CD	true	true
DMA interrupt enable 2	$CE	true	true
Debug LED Control Register	$FF	false	true
Default Tilemap Attribute Register	$6C	true	true
Display Control 1 Register	$69	true	true
DivMMC Trap Enable 1 Register	$B2	true	true
DivMMC Trap Enable 2 Register	$B4	true	true
Divmmc Entry Points 0	$B8	true	true
Divmmc Entry Points 1	$BB	true	true
Divmmc Entry Points Timing 0	$BA	true	true
Divmmc Entry Points Valid 0	$B9	true	true
ESP WiFi GPIO Output Register	$A8	true	true
ESP WiFi GPIO Register	$A9	true	true
Enhanced ULA Control Register	$43	true	true
Enhanced ULA Ink Color Mask	$42	true	true
Enhanced ULA Palette Extension	$44	true	true
Expansion Bus Control Register	$81	true	true
Expansion Bus Decoding b0-7 Register	$86	true	true
Expansion Bus Decoding b16-23 Register	$88	true	true
Expansion Bus Decoding b24-31 Register	$89	true	true
Expansion Bus Decoding b8-15 Register	$87	true	true
Expansion Bus Enable Register	$80	true	true
Expansion Bus I/O Propagate Register	$8A	true	true
Extended Keys 0 Register	$B0	true	false
Extended Keys 1 Register	$B1	true	false
Extended MD Pad Buttons	$B2	true	false
Generate Maskable Interrupt	$20	true	true
Global Transparency Register	$14	true	true
... further results