Search by property

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

• Clip Window Layer 2 Register  + (Sets and reads clip-window for Layer 2.)
• Clip Window Sprites Register  + (Sets and reads clip-window for Sprites)
• Clip Window Tilemap Register  + (Sets and reads clip-window for Tilemap.)
• Clip Window ULA/LoRes Register  + (Sets and reads clip-window for ULA/LoRes layer.)
• I2C clock  + (Sets and reads the I2C SCL line.)
• I2C data  + (Sets and reads the I2C SDA line)
• Peripheral 1 Register  + (Sets joystick mode, video frequency and [[Scandoubler]].)
• Peripheral 4 Register  + (Sets scanlines, AY mono output, Sprite-id lockstep, reset DivMMC mapram and disable HDMI audio.)
• Global Transparency Register  + (Sets the "transparent" colour for Layer 2, ULA and LoRes pixel data.)
• Layer 2 Y Offset Register  + (Sets the Y offset used when drawing Layer 2 graphics on the screen.)
• Layer 2 RAM Shadow Page Register  + (Sets the [[Memory map|bank]] number where the Layer 2 shadow screen begins.)
• Layer 2 RAM Page Register  + (Sets the [[Memory map|bank]] number where Layer 2 video memory begins.)
• 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)