Fully documents the keypad produced by Sinclair Research for the ZX Spectrum 128 but never released in the UK. Also describes how to build a compatible keypad.
Sinclair ZX Spectrum 128 Keypad
ZX Resource Centre - Sinclair ZX Interface 2 and Spectrum 128
2024-08-12
Documents the Sinclair ZX Interface 2 and ROM cartridges (including building custom cartridges). Also documents how to build a SCART lead and keypad for the Sinclair ZX Spectrum 128, and how to extend 128 BASIC.