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ZX Spectrum Harlequin Paged ROM
This project adds multiple ROMs to the ZX Spectrum Harlequin. The Spectrum ROM is 16k bytes in size, it's replaced in the Harlequin board design by a 27C128 EPROM. This board uses a 27C020 EPROM as a 16 x 16k paged ROM. The active ROM image is selected by a HEX encoded rotary switch and the currently active ROM is shown on a HEX LED display (TIL311 display is optional).
I've now uploaded an example ROM image. The image is a binary dump and contains 16 Spectrum ROM images including IF2 games, unreleased IF2 games, BASIC (of course) and Spectrum test code.
ZX Spectrum Harlequin Paged ROM
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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Raspberry Pi 5 7 Inch Touch Screen IPS 1024x600 HD LCD HDMI-compatible Display for RPI 4B 3B+ OPI 5 AIDA64 PC Secondary Screen（Without Speaker）
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