Making Big Sprites
Sprites don't need to be 16x16 pixels, they can be larger.
ZX Spectrum Next Hardware Sprites Overview
An overview of the Spectrum Next's hardware sprites
ZX Spectrum Next Memory Bank Switching
How bank switching and memory paging is used when displaying Layer 2 graphics on the Spectrum Next
Devlog 02 - Layer 2 Graphics
An overview of the Spectrum Next's Layer 2 bitmap display