FBZX

Versión actual: 4.8.0

FBZX es un emulador de Sinclair Spectrum, diseñado para funcionar a pantalla completa en una consola con FrameBuffer, o bajo X-Windows. Sus principales características son:

• Emula de forma precisa el Spectrum original (tanto issue 2 como issue 3), el 128K original, el Amstrad Plus 2, el Amstrad Plus 2A y el 128K español. Esto incluye pantalla, teclado y sonido (tanto el speaker como el chip AY-3-8912).
• La emulacion de pantalla es extremadamente precisa, por lo que puede emular efectos de borde e incluso efectos de atributos.
• Permite cargar y grabar snapshots en formato Z80.
• Permite cargar y grabar ficheros de cinta en formato TAP y TZX, soportando carga a velocidad normal y rápida.
• Emula los joysticks de tipo kempston, cursor y sinclair.
• Emula el ratón Kempston Mouse.
• Emula el Interface I y un microdrive.
• Emula la ULAPlus
• Basado en un nuevo, y totalmente libre, emulador de Z80 (Z80Free).
• Se distribuye bajo licencia GPLv3.

FBZX usa las bibliotecas SDL2, libpulse0, y libasound2, por lo que necesitarás instalarlas para poder usar el emulador (a menos que se recompile, en cuyo caso se puede escoger cuales se utilizarán).

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Historia de versiones

• version 4.8.0 (2021/05/30)
• Fixed ULAPlus mode
• version 4.7.0 (2021/04/15)
• Fixed inverted left-right keys in Sinclair joystick emulation
• version 4.6.0 (2021/03/30)
• Fixed keyboard lag when a key is kept pressed (due to autorrepeat)
• version 4.5.0 (2021/03/21)
• Allows to show the FPS in a game
• Fixed making Z80 Snapshots
• version 4.4.0 (2021/02/12)
• RETI doesn't enable interrupts. Fixed.
• Removed OSS support
• Use 16-bit for sound
• Limit the volume output to avoid interferences in PulseAudio
• Add MIC emulation
• Added sound filtering to enhance sound quality
• version 4.3.1 (2021/01/30)
• REALLY set ALSA as default audio output
• version 4.3.0 (2021/01/29)
• Fixed 48K Z80 snaps
• Set ALSA as default audio output
• version 4.2.0 (2021/01/17)
• Fixed RETI
• version 4.1.0 (2021/01/11)
• Fixed BRIGHT colors
• version 4.0.0 (2018/08/11)
• Now fullscreen works fine with Wayland (ported to SDL2)
• version 3.9.1 (2018/05/01)
• Removed unused printfs
• version 3.9.0 (2018/05/01)
• Added letter and number key handling for file selector (thanks to Adrian Castravete)
• version 3.8.0 (2017/03/06)
• Updated the Z80 emulator and the screen emulation, which now is so precise that can run flawlessly the SHOCK demo both in 48K and +3 mode
• Removed the code that removed the DC in the audio output, because the sound was really ugly
• version 3.7.0 (2017/03/04)
• Now the interrupt line is kept low exactly 32tstates
• Now the EI as prefix works fine
• version 3.6.0 (2017/02/14)
• Fixed timing bug
• version 3.5.0 (2017/02/13)
• Even better adjusted the memory contention
• version 3.4.0 (2017/02/13)
• Slightly better adjusted the memory contention
• version 3.3.0 (2017/02/13)
• Fixed the Fast Load
• Now the tape is paused automatically when it reachs the end
• version 3.2.0 (2017/02/12)
• Better memory contention
• Fixed pause block in TZX files
• version 3.1.0 (2016/12/16)
• Added Kempston Mouse emulation
• Added block 30 support for TZX files
• version 3.0.0 (2015/04/01)
• Now allows to run in TURBO mode when the tape is playing, and return to NORMAL mode when the tape is paused
• Sorts the files and folders alphabetically
• Allows to use fast-load with some parts of TZX files
• Allows to save data both in TAP and TZX files
• Allows to do FAST-SAVE in +3 mode
• Allows to create TZX files
• New fonts for menus
• Fixed an stupid bug in the FAST LD_BYTES code that avoided it to work as expected
• Supports new TZX blocks, like "pause if 48K mode"
• Refactorized in C++
• version 2.11.0 (2015/03/31)
• Allows to play and pause the tape even with the FAST LOAD mode enabled
• Adds some noise in the tape bit to ensure that the user knows when a program is waiting to load from tape
• version 2.10.0 ()
• Fixed CPIR, CPDR, INI, INIR, IND, INDR, OUTI, OTIR, OUTD and OTDR instructions
• Fixed RETI and RETN instructions to better mimic the original behaviour
• Big rewrote of the AY-3-8912 code, greatly improving the emulation
• version 2.9.0 ()
• Fixed CPIR and CPDR, so now Ant Attack works fine (thanks to Fabio Olimpieri)
• Now CPIR and CPDR sets the N bit
• Access to the ULAPLUS registers now produces memory contention, as it should be (thanks to Fabio Olimpieri)
• Now initializates some registers when loading a .sna snapshot (thanks to Fabio Olimpieri)
• version 2.8.0 ()
• Fixed OUTI, OTIR, OUTD and OTDR: now decrements B before doing OUT (thanks to Fabio Olimpieri)
• Now the snapshot management functions doesn't use so many stack memory (thanks to Fabio Olimpieri)
• Fixed a bug in screen painting with big endian machines (thanks to Fabio Olimpieri)
• Fixed key order for Sinclair Joystick #2 (thanks to Fabio Olimpieri)
• Fixed the Z80 emulator tests for big endian machines (thanks to Fabio Olimpieri)
• Removed anoying sound when reseting the emulator
• version 2.7.0 ()
• Fixed a bug that prevented FBZX to store the current mode
• Now supports 320x240 mode
• version 2.6.0 ()
• ULAPlus support
• Fixed a little bug in the ROM loading
• Allows to go to TAP/Snapshots/etc menus from HELP menu
• version 2.5.0 (2011/04/07)
• Allows to set POKEs
• Emulates B&W sets
• Allows to load and save SCR snapshots
• version 2.4.3 ()
• Fixed a bug with the double-scan flag
• version 2.4.2 ()
• Fixed a bug with alsa sound
• version 2.4.1 ()
• Now will work fine under all 64bit systems
• version 2.4.0 ()
• Fixed a bug in SNA loader (thanks to Jose Luis)
• Added a DC filter in PulseAudio sound, to avoid losing the sound when
• Added a help message at startup
• version 2.3.0 ()
• Added support for PulseAudio
• Allows to selectively compile the audio backend (useful for Gentoo users)
• version 2.2.0 ()
• Several bugfixes in the Z80 emulator, giving a much more accurate
• version 2.1b ()
• Directory ROMS in TAR.BZ2 package renamed to SPECTRUM-ROMS to allow FBZX
• version 2.1 ()
• Changed the ROM format for compatibility with files in
• Added new icon (thanks to Paulo Silva)
• version 2.0 ()
• 100% Free code (under GPL3) due to a rewriten Z80 emulator
• Emulates the Spanish 128K (thanks to J. Baltasar)
• Can use ALSA or OSS to sound output
• Stores the volume settings
• Fixed a bug in the sound with some soundcards
• Can be run from the local directory, without installing in /usr
• version 1.10 ()
• Allows to switch between full screen and window mode
• Added Turbo mode, to load TZX files faster (both thanks to a patch
• Shows FBZX as window name
• version 1.9 ()
• Stores the current mode before exiting, so if you was playing in 128K
• Allows to show the screen with or without scanline emulation
• Shows the OSD in the bottom of the screen
• Clicking on the X button in the window bar closes the emulator
• version 1.8 ()
• Fixed a bug when loading .Z80 snapshots
• Added support for .SNA snapshots
• Added support for Joysticks
• Now creates an entry in the GNOME/KDE menus
• Can load snapshots or tapes from the command line
• Allows to asociate to it the file extensions .SNA, .Z80, .TAP and TZX so
• version 1.7 ()
• Fixed a bug in the creation of 128K snapshots
• Fixed the memory access ports in 128K mode
• version 1.6 ()
• Fixed an stupid bug that can crash FBZX
• Added support for rotated, 480x640 screens (like PDAs)
• Direct support for 8, 16, 24 and 32 bpp (more performance)
• Added contended memory emulation
• Added support for ',' and '.' keys
• Added FullScreen mode in XWindows
• Added a picture with the keyboard layout
• Added support for computers without function keys
• Asks for confirmation before exiting
• Fixed the version number
• version 1.5 ()
• Direct compilation under BIG ENDIAN arquitectures (eg. PowerPC).
• version 1.4 ()
• Added the ability to create .TAP files and save to them.
• Added Interface I and Microdrive emulation (read and write).
• Added emulation of DELETE key.
• Added emulation of SNOW effect.
• Fixed a little bug in the fast-TAP loader.
• Fixed a speed problem when used without sound.
• version 1.3 ()
• Added support for more TZX tape files (thanks to Daley Thompson :)
• version 1.2 ()
• Added support for TZX tape files.
• Fixed a bug in the file selector.
• Added right emulation of register R.
• Added a digital low-pass filter to enhace the 48K sound.
• version 1.1 ()
• Changed the sound system. Now it uses OSS instead the SDL API. This fixes a
• Now can be used without sound card (run it with '-nosound' parameter).
• version 1.0.1 ()
• Very little fixes to remove some innocent warnings during compilation. Thanks
• version 1.0 ()
• First public release.