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CFR-25JB-52-10KYAGEO
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TL866II Plus ProgrammerXgecu
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ZX Spectrum ROM replacement
ROM replacement for Sinclair ZX Spectrum
Use a 27C256, program it with the zx spectrum 48k rom and solder it to the board.
You can write a second image into the eprom from address $4000 so you can select it by closing the J1 connector
R1, R2: 10K Ohm resistor 1/4w
D1, D2: 1N4148 or equivalent diode
U1: 27C256
GitHub:
https://github.com/zeus074/ZX-Spectrum-ROM-adapter
*Program U1 before soldering it, don't use socket for the eprom.
Video:
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ZX Spectrum ROM replacement
Project images are for reference only. Actual production is based on the manufacturing files on the project page.
Please review the designer's notes (e.g., PCB thickness) and select the appropriate options.
PCBWay is not responsible
for issues caused by unsuitable parameter selections.
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