Instead of the mushy, unreliable rubber membranes of yesteryear, utilize low-profile tactile SMD buttons or mechanical Choc switches arranged on your custom printed circuit board (PCB) to give your portable device a premium feel. Part 4: Step-by-Step Hardware Design Guide
Here is a step-by-step design guide for a minimal Z80 system: Instead of the mushy, unreliable rubber membranes of
Recreating the ZX Spectrum experience hinges on reproducing both function and timing. Using an FPGA to implement a modern ULA lets you preserve the machine’s behavioral quirks (what made the Spectrum special) while adding modern conveniences for portability. Start with a focused FPGA video/DRAM prototype, iterate with a simple ROM and Z80 core, and build outward—balancing authenticity and usability to produce a compact, lovable retro microcomputer. Start with a focused FPGA video/DRAM prototype, iterate
The ZX Spectrum's design offers valuable lessons for those interested in creating their own microcomputers. Here are a few takeaways: Instead of the mushy