I keep losing this information in the Next manual, so here it is for quick lookup.

| Layer | Name | Resolution | Cell size | Cells | Colours | Colours/cell | | ----- | -------------- | ---------- | --------- | -------- | ------- | ------------ | | L0 | ULA | 256 x 192 | 8 x 8 | 32 x 24 | 8 | 2 | | L1,0 | LoRes | 128 x 96 | - | - | 256 | - | | L1,1 | Standard Res | 256 x 192 | 8 x 8 | 32 x 24 | 256 | 2 | | L1,2 | Timex HiRes | 512 x 192 | - | - | 2 | - | | L1,3 | Timex HiColour | 256 x 192 | 8 x 1 | 32 x 192 | 256 | 2 | | L2 | | 256 x 192 | - | - | 256 | - | | L3,0 | Text mode | 320 x 256 | 8 x 8 | 40 x 32 | 256 | 2 | | L3,1 | Text mode | 640 x 256 | 8 x 8 | 80 x 32 | 256 | 2 | | L3,2 | Graphics mode | 320 x 256 | 8 x 8 | 40 x 32 | 256 | 16 | | L3,3 | Graphics mode | 640 x 256 | 8 x 8 | 80 x 32 | 256 | 16 |

In addition to these layers, there are also the sprites which don’t work off a grid.

Layer 0[](#layer-0)

  • Layer 0 – Standard Spectrum (ULA) mode, 256w x 192h pixels, 8 colours total (2 in tensities), 32 x 24 cells, each capable of displaying 2 colours

Layer 1[](#layer-1)

  • Layer 1,0 – LoRes (Enhanced ULA) mode, 128w x 96h pixels, 256 colours total, 1 colour per pixel

  • Layer 1,1 – Standard Res (Enhanced ULA) mode, 256w x 192h pixels, 256 colours total, 32 x 24 cells, each capable of displaying 2 colours

  • Layer 1,2 – Timex HiRes (Enhanced ULA) mode, 512w x 192h pixels, 256 colours total, only 2 colours on screen

  • Layer 1,3 – Timex HiColour (Enhanced ULA) mode, 256w x 192h pixels, 256 colours total, 32 x 192 cells, each capable of displaying 2 colours

Layer 2[](#layer-2)

  • Layer 2 – 256w x 192h pixels, 256 colours total, one colour per pixel

Layer 3[](#layer-3)

  • Layer 3,0 – Text mode, 320w x 256h pixels, 256 colours total, 40 x 32 cells each capable of displaying 2 colours

  • Layer 3,1 – Text mode, 640w x 256h pixels, 256 colours total, 80 x 32 cells, each capable of displaying 2 colours

  • Layer 3,2 – Graphics mode, 320w x 256h pixels, 256 colours total, 40 x 32 cells each capable of displaying 16 colours

  • Layer 3,3 – Graphics mode, 640w x 256h pixels, 256 colours total, 80 x 32 cells, each capable of displaying 16 colours

This is all on page 116 of the first edition manual.

Learned at 13-May 2021 @ 09:21 about spectrum. [Edit this post](https://github.com/remy/remysharp.com/blob/main/public/til/spectrum/next-layer-resolutions.md)