This Spectrum was "Assembled in Portugal". The first time I see that. Let's give it a new life.
The Harlequin is a Sinclair ZX Spectrum 128K clone. It's available as DIY kit, and it's fun to make one.
When I started to refurbish old computers in 2021, I couldn't imagine that it was so much fun. 😁 The other day I bought another ZX Spectrum.
The Amiga Flash ROM adapter by @AmigaWorld is a good alternative to EPROMs. This is how to flash and use them.
Can modern development methods be applied to old AmigaOS projects? This is how I ported and open-sourced an old Amiga project.
8-bit processors like the Z80 could only add and subtract numbers. So how were numbers multiplied?