fdd-interface

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Alex-2-Graf / ZX-Spectrum-BDI-TR-DOS-interface

Open-source Beta Disk Interface (TR-DOS) for ZX Spectrum 48K/128K. Powered strictly by +5V using Fujitsu MB8877A FDC. No +12V required! Available in classic sandwich and compact single-board versions.

retrocomputing zx-spectrum schematics kicad tr-dos fdd-interface hardware-diy beta-disk-interface mb8877

Updated May 14, 2026
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Alex-2-Graf / ZX-Spectrum-plus2A-fdd-interface

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Native μPD765-based Floppy Disk Drive interface for ZX Spectrum +2A/+2B. Provides 100% hardware compatibility with the built-in +3DOS.

retrocomputing zx-spectrum schematics kicad gotek floppydisk zx-spectrum-plus2a floppy-disk-drive fdd-interface hardware-diy plus3dos upd765 intel-8272

Updated May 10, 2026
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