[zx] Fuse 1.9.0 20-15/05/2026

Fuse 1.9.0

Fuse 1.9.0  20-15/06/2026

New features:

• Add NTSC TV and replace the PAL TV filters (derived from snes_ntsc by Shay Green) (patch #374) (matja and Fredrick Meunier).

Emulation core improvements:

• Tape traps: set the pulse level correctly after loading a ROM block (fixes bugs #398, #401, #402 and #411) (Alberto Garcia).
• TZX handling: don't ignore the embedded pause at the end of a block (fixes bugs #377 and #480) (Alberto Garcia).
• Release pressed keys after snapshot restore (fixes bug #77) (thanks, jdaw1) (Fredrick Meunier).

UI improvements:

• GTK3: stop forcing X11 over Wayland (Alberto Garcia).
• SDL2: use layout-aware key mapping in keyboard handling (Fredrick Meunier).
• SDL2: correct the Options-level fullscreen toggle (thanks, Blerkotron) (Fredrick Meunier).
• SDL2: fix tape icon placement on Timex machines (Fredrick Meunier).
• Win32: improve graphics update performance by writing directly into window DIB (Fredrick Meunier).

Debugger improvements:

• Add modulo (%) and bit-shift (<<, >>) operators to the expression evaluator (Fredrick Meunier).
• Deprecated features removed:
• Remove support for libjsw (fixes bug #21) (thanks, Sergio Baldoví) (Fredrick Meunier).

Miscellaneous improvements:

• Rework SDL detection in configure.ac (Alberto Garcia).
• Update SourceForge HTTP URLs to HTTPS (Fredrick Meunier).
• desktop file: include EXEEXT in the Exec field (Alberto Garcia).
• desktop file: set the GTK category only in GTK builds (Alberto Garcia).
• Fix an error in the manpage (Alberto Garcia).
• Advance the ALSA buffer pointer after partial writes to improve sound output handling (Fredrick Meunier).

Testing improvements:

• Add unit tests for the expression evaluator (Fredrick Meunier).
• Expand disassembler test coverage for unprefixed, CB, ED, DD/FD and undocumented DDCB/FDCB opcodes (Fredrick Meunier).
• Add unit tests for keyboard_read and keyboard_simulate_keypress (Fredrick Meunier).
• Add unit test coverage for SDL2 scaler selection and joystick boundary cases (Fredrick Meunier).
• Add unit test coverage for rectangle reallocation and MEMPOOL_UNTRACKED handling (Fredrick Meunier).
• Various other minor bugfixes.

Fuse 1.8.0 2026-05-11/16 Fredrick Meunier

New features:

• Add SDL 2 compatibility (thanks, Gergely Szasz, Vitaly Greck, Marc Serdeliuc, Sergio Baldoví and Alberto Garcia) (Fredrick Meunier)
• UI improvements:
• Make 2x the default display scaler so Fuse is more usable on modern screens (Fredrick Meunier).
• GTK UI: Fix loading binary data from deleted files (thanks, Crisis)
• Expand queued redraw areas to avoid redraw seams in GTK3 (fixes bug #516) (Fredrick Meunier).

Emulation core improvements:

• Speed up display dirty-bit scanning with __builtin_ctz (Fredrick Meunier).

Debugger improvements:

• Remove $-prefixed hex digit syntax from the debugger to prevent clashes with variables (fixes bug #407) (thanks, Gergely Szasz and Sergio Baldoví).
• Fix missing bit number in DD/FD CB disassembly (fixes bug #515) (Cesar Hernandez).

Deprecated features removed:

• Remove GTK2 support from the build and codebase (Derek Fountain).

Miscellaneous improvements:

• Win32: don't abort startup if networking is blocked; instead, disable Spectranet with a warning (Fredrick Meunier).
• Use LIBSPECTRUM_SUPPORTS_WAV to gate WAV support (Fredrick Meunier).
• Correct libspectrum DLL version (thanks, Guesser) (Fredrick Meunier).
• Suppress or fix various compiler warnings, including common-symbol alignment warnings on macOS (Derek Fountain and Fredrick Meunier).
• Fix out-of-tree builds by using full paths in generated #includes (Alberto Garcia).
• Add an AppStream metainfo file (Alberto Garcia).
• Document the profiler menu options (fixes bug #303) (Fredrick Meunier).
• Store the configuration file in the XDG configuration directory, with fallback to ~/.fuserc for reading (patches #443) (Alberto Garcia).
• Document new location of the configuration file (Sergio Baldoví).
• Rename ui/gtk to ui/gtk3 (Derek Fountain).
• Use the macros provided by gtk/glib to disable deprecation warnings (Alberto Garcia).
• Add menu_data.ui to the GTK3 GResource file (Alberto Garcia).
• Remove UTILS_AUXILIARY_GTK as the GTK build no longer needs external auxiliary files (Alberto Garcia).
• Distribute ui/widget/fuse.font in the SDL2 build for Windows (Sergio Baldoví).
• Testing improvements:
• Add unit tests for display rendering and dirty-region handling (Philip Kendall and Fredrick Meunier).
• Expand unit test coverage for bitmap operations, mempool_strdup and utils_safe_strdup edge cases (Fredrick Meunier).
• Add GitHub Actions libspectrum workflows and Windows release packaging (Fredrick Meunier).
• Add ED-prefix disassembler coverage (Fredrick Meunier).
• Extend disassembler coverage for FD CB and negative offsets (Fredrick Meunier).
• Add BIT/RES/SET disassembler regression tests (Fredrick Meunier).
• Various other minor bugfixes.

Fuse 1.7.0

20-03-2026 Fuse 1.7.0 released

• Add Currah μSpeech emulation
• Improve emulation accuracy and performance, including faster emulated memory reads and more accurate AM29F010B flash ROM handling
• Improve EDSK disk image handling, fixing multiple loading and formatting issues
• Fix the uPD765 FDC SCAN bug, allowing formatting on CP/M Plus and Fuzix
• Improve TTX2000S teletext handling and Spectranet socket interrupt behaviour
• GTK UI: fix deleted-file binary loads, toolbar icon display, deprecated keymap API usage and a tape browser memory leak
• WidgetUI: rearrange AY registers and Z80 flags in the debugger
• Win32 UI: fix multiple monitor handling and unwanted title bar maximising
• Add support for loading .S snapshot files
• Various minor bugfixes and cleanups

Spectrum uczy i bawi, o czym warto pamiętać. Matematyka. Obroty i Symetria

2021-02-27 Fuse 1.6.0 released

New features:

• Add TTX2000S emulation (Guesser).
• Experimental PulseAudio sound driver (Grzegorz Jablonski and Sergio Baldoví).

Emulation core improvements:

• Fix activation of joystick and IF2 peripherals when loading a snapshot (thanks, ICEknight) (Sergio Baldoví).

UI improvements:

• New higher resolution keyboard picture on GTK and win32 UIs (thanks, Andrew Owen for the picture) (Sergio Baldoví and Philip Kendall).
• GTK UI: Add Fuse icon to the about dialog and the main window (Alberto Garcia).
• GTK UI: Load/save binary dialog remembers last values (Derek Fountain).
• GTK 3 UI: Improve moving and sizing Fuse's window under Wayland (Sergio Baldoví).
• GTK 3 UI: Fix kempston mouse values on Wayland (thanks, Philip Kendall) (Sergio Baldoví).
• GTK 3 UI: Fix bug when resizing from 2x to 3x on GTK UI (Sergio Baldoví)
• SDL UI: Fix crash when using dispmanx backend on the Raspberry Pi (Jools Wills).
• SDL UI: Allow forcing fullscreen mode when SDL doesn't report available screen modes (Sergio Baldoví).
• WidgetUI: New dialog to load/save binary data (Gergely Szasz).
• WidgetUI: Enable HOME and END keys in menus on widget UIs (Gergely Szasz).
• WidgetUI: Use monospaced characters on memory browser (Gergely Szasz).
• WidgetUI: Fix crash when trying to overwrite read-only files (Pedro Luis Rodríguez González).
• Win32: Fix bitwise operation in debugger (Sergio Baldoví).
• Xlib UI: Try to keep graphic filter when the user resize the window (Gergely Szasz).

Scaler improvements:

• Fix display corruption with HQ 3x scaler (thanks, Philip Kendall) (Sergio Baldoví).
• Fix antialiasing effect of AdvMAME3x scaler (Sergio Baldoví).
• Add 4x, TV 4x, Pal TV 4x and HQ 4x scalers on GTK, SDL, win32 and Xlib UIs (Sergio Baldoví and Gergely Szasz).
• Allow screenshots with TV 3x, PAL TV and Timex 1.5x scalers (Sergio Baldoví).

Miscellaneous improvements:

• Allow selection of audio driver at build time (thanks, kov_serg) (Alberto Garcia).
• Support of SDL 2 for joystick and audio drivers (Alberto Garcia).
• Fix GTK 3 build when the GTK version is < 3.20 (thanks, Thrice) (Alberto Garcia).
• Fix GTK build with Wayland, Quartz and Windows backends (thanks, Stuart Brady) (Sergio Baldoví).
• Various fixes to allow compilation with GCC 10 (Alberto Garcia and Sergio Baldoví).
• Suppress a couple of -Wunused-result warnings from gcc (Alberto Garcia).
• Improve error message when opening a directory from the command line (thanks, Philip Kendall) (Alberto Garcia and Sergio Baldoví).

2018-12-09 Fuse 1.5.7 released.

UI improvements:

• GTK+ 3: Make the offset entry wider in memory browser (Derek Fountain).
• GTK+: Remove duplicated surface creation code (Philip Kendall).
• GTK+: Remove use of deprecated gtk_device_(un)grab functions (Philip Kendall).
• GTK+/Win32: Add *.bin as an allowed filetype to file selectors and amend .fmf filetype (thanks, Allan Turvey) (Sergio Baldoví).
• Improve Fuse's window sizing under Wayland; still not right, but better than it was before (Sergio Baldoví).
• Improve Fuse's Kempston mouse handling under GTK+ 3.x (Philip Kendall).
• Stop Kempston mouse causing a crash under Wayland; still doesn't work properly though (Philip Kendall).

Miscellaneous improvements:

• "Save binary" command can now save 65536 bytes again (regression introduced in 1.5.6; thanks, thrice) (Philip Kendall).
• Remove gcc 8 string overflow warnings (Philip Kendall).

Fuse 1.5.6 2018-08-07

Emulation core improvements:

• Z80 flags register is now correct after SCF and CCF (Sergio Baldoví).

Miscellaneous improvements:

• Factor out common paths code between Linux and generic UNIX (Alberto Garcia and Fredrick Meunier).
• More improvements disabling phantom typist after finishing loading TAP or standard ROM TZX files (thanks, Alberto Garcia) (Fredrick Meunier).
• Saving and loading binary data no longer increments tstate count or triggers breakpoints (thanks, Sergio Baldoví) (Philip Kendall).
• « Variant » Alkatraz loaders (e.g. Gauntlet 3 and Shadow Dancer), « Variant » Search Loader programs (e.g. Lotus Esprit Turbo Challenge and Space Crusade) and Dinaload loaders (e.g. Astro Marine Corps) are now accelerated (Philip Kendall).
• Stop RZX playback/recording on machine reset/change (Sergio Baldoví).
• Various minor bugfixes.

Fuse 1.5.5 2018-07-01

Emulation core improvements:

• Improve sound accuracy on Unix 64 bits systems (thanks, Fredrick Meunier) (Sergio Baldoví).

Miscellaneous improvements:

• Allow the use of real joystick hats/dpads in the SDL joystick code (thanks, Sarah) (Fredrick Meunier).
• Rename compat_get_home_path() to compat_get_config_path() (Alberto Garcia).
• Various minor bugfixes.

The Duel: Test Drive II (a.k.a. Test Drive 2) (Accolade, Inc., 1989)

Fuse 1.5.4 2018-06-03

Miscellaneous improvements:

• Add *.FMF as an allowed filetype to file selectors (Sergio Baldoví).
• Save SCR from current display file (thanks, Einar Saukas) (Fredrick Meunier).
• Use 44.1KHz as default sound frequency (Fredrick Meunier).
• Various minor bugfixes.

Fuse 1.5.3 released. 2018/04/29

Emulation core improvements:

• Disable inactive peripherals after loading a snapshot (Sergio Baldoví).

Miscellaneous improvements:

• Distribute strcasecmp autoconf macro (Sergio Baldoví).
• Re-enable sound after phantom typist finishes loading TAP, standard ROM TZX or +3 DSK images (thanks, Alberto Garcia) (Fredrick Meunier).

Fuse 1.5.2 2018-03-27.

Emulation core improvements:

• Emulate ROM bug loading zero length blocks when using tape traps (ub880d).

Machine specific improvements:

• Fix the format of double-sided +3 disks (Sergio Baldoví).

Miscellaneous improvements:

• Spectrum reset is accelerated when phantom typist is enabled and a file is loaded from the menu (Fredrick Meunier).
• Add options UI for phantom typist (Fredrick Meunier).
• GTK+ 3 UI: Memory browser dialog allows to go to specific offset (Sergio Baldoví).

Fuse 1.5.1 (the Free Unix Spectrum Emulator) 2018/02/25

Debugger improvements:

• Prevent crash when we try to disassemble an instruction with many DD or FD prefixes (Philip Kendall; thanks, Miguel Angel Rodríguez Jódar).
• Fix crash when setting debugger variables (Gergely Szasz).

Profiler improvements:

• Prevent crash when we try to profile an instruction with many DD or FD prefixes (Philip Kendall; thanks, Sergio Baldoví).

Miscellaneous improvements:

• GTK+ UI: Improve behaviour of default button on dialogs (thanks, atom-atom) (ub880d and Sergio Baldoví).
• GTK+ and win32 UIs: Support hex numbers in load/save binary and pokefinder dialogs (thanks, Allan Turvey) (Sergio Baldoví).
• SDL UI: Allow to select the video mode used in full-screen (Gergely Szasz).