Semantic search
Number | Readable | Writable | Description | |
---|---|---|---|---|
Sprites Transparency Index Register | $4B | Yes | Yes | Index into sprite palette (of "transparent" colour). |
Tilemap Transparency Index Register | $4C | Yes | Yes | Index into Tilemap palette (of "transparent" colour). |
Memory management slot 0 bank | $50 | Yes | Yes | Selects the 8k-bank stored in 8k-slot 0 (see Memory map). |
Memory management slot 1 bank | $51 | Yes | Yes | Selects the 8k-bank stored in 8k-slot 1 (see Memory map). |
Memory management slot 2 bank | $52 | Yes | Yes | Selects the 8k-bank stored in 8k-slot 2 (see Memory map). |
Memory management slot 3 bank | $53 | Yes | Yes | Selects the 8k-bank stored in 8k-slot 3 (see Memory map). |
Memory management slot 4 bank | $54 | Yes | Yes | Selects the 8k-bank stored in 8k-slot 4 (see Memory map). |
Memory management slot 5 bank | $55 | Yes | Yes | Selects the 8k-bank stored in 8k-slot 5 (see Memory map). |
Memory management slot 6 bank | $56 | Yes | Yes | Selects the 8k-bank stored in 8k-slot 6 (see Memory map). |
Memory management slot 7 bank | $57 | Yes | Yes | Selects the 8k-bank stored in 8k-slot 7 (see Memory map). |
Copper Data | $60 | No | Yes | Used to upload code to the Copper. |
Copper Control Low Byte | $61 | Yes | Yes | Holds low byte of Copper control bits. |
Copper Control High Byte | $62 | Yes | Yes | Holds high byte of Copper control flags. |
Copper Data 16-bit Write Register | $63 | No | Yes | Used to upload code to the Copper. |
Vertical Video Line Offset Register | $64 | Yes | Yes | Offset numbering of raster lines in copper/interrupt/active register |
ULA Control Register | $68 | Yes | Yes | Disable ULA, controls ULA mixing/blending, enable ULA+ |
Display Control 1 Register | $69 | Yes | Yes | Layer2, ULA shadow, Timex $FF port |
LoRes Control Register | $6A | Yes | Yes | LoRes Radastan mode |
Tilemap Control Register | $6B | Yes | Yes | Controls Tilemap mode. |
Default Tilemap Attribute Register | $6C | Yes | Yes | Default tile attribute for 8-bit only maps. |