Semantic search
Number | Readable | Writable | Description | |
---|---|---|---|---|
Tilemap Transparency Index Register | $4C | true | true | Index into Tilemap palette (of "transparent" colour). |
Transparency colour fallback Register | $4A | true | true | 8-bit colour to be used when all layers contain transparent pixel. |
ULA Control Register | $68 | true | true | Disable ULA, controls ULA mixing/blending, enable ULA+ |
ULA X Offset Register | $26 | true | true | Pixel X offset (0..255) to use when drawing ULA Layer. |
ULA Y Offset Register | $27 | true | true | Pixel Y offset (0..191) to use when drawing ULA Layer. |
User Storage 0 Register | $7F | true | true | 8-bit storage for user |
Vertical Video Line Offset Register | $64 | true | true | Offset numbering of raster lines in copper/interrupt/active register |
Video Line Interrupt Control Register | $22 | true | true | Controls the timing of raster interrupts and the ULA frame interrupt. |
Video Line Interrupt Value Register | $23 | true | true | Holds the eight LSBs of the line on which a raster interrupt should occur. |
Video Timing Register | $11 | true | true | Sets video output timing variant. |