FBZX – ZX Spectrum emulator

FBZX is a Sinclair ZX Spectrum emulator, designed to work at full screen using the FrameBuffer. It also works under X, both in full screen mode and in a window.

It’s based on the excellent Z80 emulator created by Marat Fayzullin, but with some minor modifications.

FBZX can emulate an Interface I with one microdrive attached, but only when working as Spectrum 48K, 128K or +2, never as +2A/+3 since it is incompatible.

Features include:

  • Accurately emulates the original ZX Spectrum (both issue 2 and issue 3), the classic 128K, the Amstrad Plus 2 and the Amstrad Plus 2A. This includes screen, keyboard and sound (both speaker and AY-3-8912 chip).
  • Screen emulation is extremely accurate, so it can emulate border effects and even attribute effects.
  • Supports Z80 and .SNA snapshots, both loading and saving.
  • Supports TAP (both read and write) and TZX (both read and write) tape files, supporting normal speed loading and fast speed loading.
  • Emulates joysticks: Kempston, Cursor and Sinclair 1 and 2 with the cursor keys (fire is emulated with the right ALT key, ALT-GR key, Windows Menu key or Windows System right key), or with a real joystick.
  • Emulates the Interface I and Microdrive.
  • Full screen mode.
  • Support for rotated, 480×640 screens.
  • Support for PulseAudio sound daemon.

Website: gitlab.com/rastersoft/fbzx
Support: FAQ
Developer: Sergio Costas Rodriguez
License: GNU GPL v3


FBZX is written in C and C++. Learn C with our recommended free books and free tutorials. Learn C++ with our recommended free books and free tutorials.

Return to Home Computer Emulators Home Page | Return to ZX Spectrum Home Page

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