Property: ShortDesc
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This is a property of type Text.
- Description
- Short text description. (en)
C
Identifies core (FPGA image) version. +
M
Identifies timing and machine type. +
N
Identifies type of last reset. Can be written to force reset. +
C
In config mode, allows RAM to be mapped to ROM area. +
T
Index into Tilemap palette (of "transparent" colour). +
S
Index into sprite palette (of "transparent" colour). +
K
Kempston interface second joystick variant and controls joystick I/O. +
L
Layer 2 resolution, palette offset +
D
Layer2, ULA shadow, Timex $FF port +
L
LoRes Radastan mode +
K
Low eight LSBs of PS/2 Keymap data. +
E
Monitoring internal I/O or adding external keyboard +
P
Mouse buttons and DPI config +
S
Nextreg port-mirror to write directly into "byte 5" of [[:Sprite Attribute Upload|Sprite Attribute Upload]] ($xx57 / 87). +
Nextreg port-mirror to write directly into "byte 2" of [[:Sprite Attribute Upload|Sprite Attribute Upload]] ($xx57 / 87). +
Nextreg port-mirror to write directly into "byte 1" of [[:Sprite Attribute Upload|Sprite Attribute Upload]] ($xx57 / 87). +
Nextreg port-mirror to write directly into "byte 3" of [[:Sprite Attribute Upload|Sprite Attribute Upload]] ($xx57 / 87). +
Nextreg port-mirror to write directly into "byte 4" of [[:Sprite Attribute Upload|Sprite Attribute Upload]] ($xx57 / 87). +
V
Offset numbering of raster lines in copper/interrupt/active register +
S
Output to SpecDrum DAC. +
K
PS/2 Keymap address LSB. +
PS/2 Keymap address MSB, read (pending) first byte of palette colour +
P
Pi I2S controls +
L
Pixel X offset (0..255) to use when drawing LoRes Layer. +
U
Pixel X offset (0..255) to use when drawing ULA Layer. +
L
Pixel Y offset (0..191) to use when drawing LoRes Layer. +
U
Pixel Y offset (0..191) to use when drawing ULA Layer. +
N
Provides additional bank select bits for extended memory. +
E
Read Next keyboard compound keys separately +
Read Next keyboard compound keys separately +
T
Reads and/or writes the selected TBBlue control register. +
K
Reads buttons on Kempston Mouse. +
U
K
Reads movement of joysticks using Kempston interface. +
S
Same as [[:Sprite port-mirror Attribute 0 Register|Sprite port-mirror Attribute 0 Register]] ($35) (write first byte of sprite-attributes), plus increments [[:Sprite port-mirror Index Register|Sprite port-mirror Index Register]] ($34) +
Same as [[:Sprite port-mirror Attribute 3 Register|Sprite port-mirror Attribute 3 Register]] ($38) (write fourth byte of sprite-attributes), plus increments [[:Sprite port-mirror Index Register|Sprite port-mirror Index Register]] ($34) +
Same as [[:Sprite port-mirror Attribute 1 Register|Sprite port-mirror Attribute 1 Register]] ($36) (write second byte of sprite-attributes), plus increments [[:Sprite port-mirror Index Register|Sprite port-mirror Index Register]] ($34) +
Same as [[:Sprite port-mirror Attribute 2 Register|Sprite port-mirror Attribute 2 Register]] ($37) (write third byte of sprite-attributes), plus increments [[:Sprite port-mirror Index Register|Sprite port-mirror Index Register]] ($34) +
M
Selects active RAM, ROM, and displayed screen. +
T
Selects active port for TBBlue/Next feature configuration. +
S
Selects sprite index 0..127 to be affected by writes to other Sprite ports (and mirrors). +
M
Selects the 8k-bank stored in 8k-slot 0 (see [[Memory map]]). +
Selects the 8k-bank stored in 8k-slot 1 (see [[Memory map]]). +
Selects the 8k-bank stored in 8k-slot 2 (see [[Memory map]]). +
Selects the 8k-bank stored in 8k-slot 3 (see [[Memory map]]). +
Selects the 8k-bank stored in 8k-slot 4 (see [[Memory map]]). +
Selects the 8k-bank stored in 8k-slot 5 (see [[Memory map]]). +
Selects the 8k-bank stored in 8k-slot 6 (see [[Memory map]]). +
Selects the 8k-bank stored in 8k-slot 7 (see [[Memory map]]). +
U