HardwareHackadayabout 1 hour ago
ZX81 Expansion Card Combines All Classic Add-Ons
1 min read
A new expansion card for the Sinclair ZX81, called OpenSpand, integrates multiple classic add-ons into a single board. It uses an RP2350 microcontroller to emulate and replace the original hardware, providing user-configurable RAM up to 64K, SD card storage, high-res graphics, emulated sound, a joystick port, serial ports, and composite video output.
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