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This page provides a simple browsing interface for finding entities described by a property and a named value. Other available search interfaces include the page property search, and the ask query builder.
List of results
- Tilemap Offset X LSB Register + (Sets the pixel offset (eight low bits) used for drawing Tilemap graphics on the screen.)
- Tilemap Offset X MSB Register + (Sets the pixel offset (two high bits) used for drawing Tilemap graphics on the screen.)
- Layer 2 X Offset Register + (Sets the pixel offset used for drawing Layer 2 graphics on the screen.)
- Layer 2 X Offset MSB Register + (Sets the pixel offset used for drawing Layer 2 graphics on the screen.)
- Tilemap Offset Y Register + (Sets the pixel offset used for drawing Tilemap graphics on the screen.)
- Video Timing Register + (Sets video output timing variant.)
- DAC A+D (mono) mirror Register + (SpecDrum port 0xDF / DAC A+D mirror, read current I2S LSB)
- Enhanced ULA Ink Color Mask + (Specifies mask to extract ink colour from attribute cell value in ULANext mode.)
- Board ID + (Spectrum next issue ID)
- Sprite port-mirror Attribute 4 (with INC) Register + (The same as [[:Sprite port-mirror Attribute 4 Register|Sprite port-mirror Attribute 4 Register]] ($39) (write fifth byte of sprite-attributes), plus increments [[:Sprite port-mirror Index Register|Sprite port-mirror Index Register]] ($34))
- Generate Maskable Interrupt + (Trigger interrupt)
- Debug LED Control Register + (Turns debug LEDs on and off on TBBlue implementations that have them.)
- UART Frame + (UART Frame)
- DMA interrupt enable 2 + (UART Interrupts that can override DMA)
- Interrupt Enable 2 + (UART interrupt enable control)
- Sprite Attribute Upload + (Uploads sprite positions, visibility, colour type and effect flags.)
- Enhanced ULA Palette Extension + (Use to set 9-bit (2-byte) colours of the Enhanced ULA palette, or to read second byte of colour.)
- Palette Value Register + (Use to set/read 8-bit colours of the ULANext palette.)
- Copper Data + (Used to upload code to the [[Copper]].)
- Copper Data 16-bit Write Register + (Used to upload code to the [[Copper]].)
- Sprite Pattern Upload + (Used to upload the pattern of the selected sprite.)
- Anti-brick Register + (Used within the [[Anti-brick system]].)
- Expansion Bus Decoding b0-7 Register + (When expansion bus is enabled: Internal ports decoding mask)
- Expansion Bus Decoding b8-15 Register + (When expansion bus is enabled: Internal ports decoding mask)
- Expansion Bus Decoding b16-23 Register + (When expansion bus is enabled: Internal ports decoding mask)
- Expansion Bus Decoding b24-31 Register + (When expansion bus is enabled: Internal ports decoding mask)
- Sound Chip Register Write + (Writes to the selected register of the selected sound chip.)
- Kempston Mouse X + (X coordinate of Kempston Mouse, 0-255.)
- Kempston Mouse Y + (Y coordinate of Kempston Mouse, 0-192.)
- Interrupt Enable 1 + (ctc interrupt enable control)
- I/O Traps + (experimental)
- I/O Trap Write + (experimental)
- I/O Trap Cause + (experimental)
- Interrupt Status 1 + (has ctc interrupt occurred?)
- Interrupt Status 0 + (has interrupt occurred?)
- Reserved + (n/a)