another release to address a couple bugs present in previous versions, including two or three critical issues (crashes).

fixes

• fix severe crash when using OPL4
• fix possible crash when importing an XM file
• fix crash when importing a config file
• fix ESFM output being inverted
• fix Y channel selector in X/Y osc (thanks Eknous)
• set default SDL audio driver on Windows Vista to winmm in order to get audio working again
• fix duty effect not working without note on VRC6
• fix VIC-20 on/off macro or note off not being taken into account when playing from position

changes/additions

• improve chip mixing for certain presets (SCC, PC-88 and PC-98) - thanks Iyatemu!
• YM2612 chip is now YM2612 by default (it was YM3438 before)
• Windows 2000 support
• add winners from the Blank Contest to Demo Songs
• add speed drift compensation options to VGM export
  • this is added in order to compensate for a slight, yet noticeable difference in playback speed when using DeadFish's Genesis VGM player

note for Windows XP/Legacy Systems users

the Windows XP version of Furnace is working once again. I've had an issue with the compiler, which has been temporarily sorted out by downgrading the C runtime package.

as a bonus, Furnace now supports Windows 2000!!! you'll need DirectX 9 installed though.

note for Windows Vista users

this release should work properly on Vista now. it wasn't launching due to dependency on a 7-exclusive function (and after fixing there wouldn't be sound out of the box due to an incomplete WASAPI implementation).

a user has reported that sound still does not work as it should. if it does not, try changing the audio backend to PortAudio in Settings > Audio.

this release contains a large number of bug and regression fixes.

fixes

• fix audio issues in SDL backend!
  • switching output devices or plugging in/disconnecting your headphones would trigger erroneous playback or even lead to a crash
• recover state of "Follow pattern" after using the Find function (annoyance fix)
• fix low quality not working on chips that use acquireDirect (e.g. PC Engine, NES, TIA...)
• channel oscilloscope fixes
  • Y8950 ADPCM (it wasn't functional before)
  • VRC6 (sawtooth was awfully broken)
  • Y carry-over, which would result in broken samples on the left side of an osc
  • NES chewed off triangle
  • volume display
  • OPL muting was broken
  • OPL3 would break on right-panned channels when using ymfm core
  • PC Engine noise looked horrible
• fix arp macro corruption when scaling or offseting if any of the steps were fixed
• fix a bug in zlib which could be used to start nuclear warfare
• new metronome icon (the bell wasn't good)
• VGM export fixes
  • OPL3 mode initialization was being done after channel setup. now fixed.
  • YM2608 mode initialization was also being done after channel setup... fixed as well.
  • YM2608 ADPCM was not working on hardware VGM players since Furnace set the memory type to ROM instead of RAM. now fixed with the addition of an option to tell Furnace whether to use ROM or RAM.
  • NES DPCM would not work on MDPlayer. this is due to a strategy which Furnace uses to save space during bank switches. this strategy is not supported by MDPlayer, so now we're using the old-fashioned "write entire bank" method.
• update VERA emulation core (noise was broken)
• OPL3 fixes
  • fix muting under certain circumstances
  • fix 4-op mode ignoring instrument changes on the paired channel
• fix ESFM ins creation malfunction when "New instruments are blank" is enabled
• OPN family ExtCh fixes
  • fix arp macro not stacking with arpeggio effect
  • fix fixed block not working
  • fix the fix not fixing fixes
• FM hard reset fixes
  • OPNA with combo core
  • OPNB
  • OPZ
• fix delayed T6W28 muting
• fix broken SID2 muting (thanks freq-mod and LTVA)
• fix note release in Namco 163 acting as a note off
• fix system file picker hangs due to the use of PFD instead of NFD in the 32-bit Windows build
• corregir el nombre de algunas percusiones en la traducción al Español
• fix wavetable length being off by 1 in text export
• YM2608: fix crash when using ymfm and CSM
• fix 12-bit raw sample import
• T6W28: fix DC offset when panning
• fix no-locale Furnace not building
• fix WinMain use of strcpy()
• fix "modern with more labels" FM layout getting reset on startup
• fix ADSR/LFO macro editor bottom/top fields becoming unusable when the ins editor window is too small

ADDITIONS!!!!1!!!!!1

• new effect to set FM algorithm, implemented for OPN family, OPM and OPZ (61xx)
• new effects to set FM FMS/AMS (62xx and 63xx)

other changes

• new demo songs
• new instrument
• documentation updates

note for Windows XP users

a user has reported that the XP version of Furnace refuses to start under Windows XP due to a missing library. if this happens to you, please let me know.

note for Flatpak users

Flatpak (a thing that brings the Android/iOS app experience to Linux desktop) has been giving us pain.
its sandboxing enforcement has resulted in multiple problems, such as Furnace devouring your song when attempting to save, file extensions not getting applied, recent files list breaking completely, and more.

since I don't feel like working around these problems, I have decided to strip off the system file picker from the Flatpak version of Furnace.
this does not affect other versions, including the releases in this page. the system file picker is still available.
just not in the Flatpak.

why don't you just call it 0.6.9 and be done with it?

you will never the funny.

thanks/greetings

• Abstract
• Architect
• Caffeinator
• Eknous
• Electric Keet
• freq-mod
• Furmilion
• halberd
• Kyuchumimo
• Lunathir
• Natt Akuma
• Raijin
• all issue reporters, contributors and users!

this version fixes some problems that were introduced in 0.6.8.
hopefully this is actually the final version in the 0.6 series - 0.7 is long overdue!

change log

• remove all April 1 bullcrap
  • these "jokes" were programmed to occur only in 2025, but I am removing them to be sure since it annoyed some users
  • I would like to apologize for not offering an option to disable these jokes (adding one would reveal the fact that there were jokes)
• actually fix compilation with CMake 4.0
• fix NDS DC drift when DC offset correction is disabled
• speed up .tfe loader
• fix pitch issues in YM2612 when using non-linear pitch
• fix 12-bit sample glitches in OPL4

it's been a while since 0.6.7...
this is (hopefully) the final release in the 0.6 series. 0.7 development will begin very soon.

change log

• add Watara Supervision system

  • a rather obscure console from Taiwan with two pulse channels, a noise and primitive sample channel

• add SID3 fantasy chip

  • inspired by SID, this chip has 6 channels of analog-synth-like goodness, a boatload of macros and even one wave channel

• add OPL4 system

  • OPL3 with 24 sample channels taken from the to-be-implemented MultiPCM

• fix 5E01 not producing sound at all

• SNES anti-click

  • note that this does not eliminate clicks in samples with incompatible loop regions! it only applies to note playback.

• POKEY SAP type R export (playable by Altirra and lzss-sap on hardware)

• FamiTracker import improvements

  • create instrument copies to represent what FamiTracker does (in particular, on VRC6 channels when using 2A03 instruments)
  • fix Hxy effect for S5B (AY)
  • fix virtual tempo going outside range
  • fix VRC7 patch switch effect (Dn-FamiTracker) not being imported correctly

• find/replace improvements

  • make the note selector a bit more comfortable
  • search in selection now works on selected channels only (previously it would search on all channels... issue #2393)
  • fix a possible crash (issue #2328)
  • cut/delay policy is now lax
  • set macro release mode to Active (issue #2376)

• C64 4-bit PCM/digi (using volume control)

• performance optimizations for certain chips

  • up to 10 times less CPU usage during playback and faster audio exports
  • optimized chips include: PC Speaker, GA20, Amiga, PC Engine, SCC, NES, MMC5, VRC6, TIA, Virtual Boy, AY (not so much), Nintendo DS, T6W28, SN, SM8521, Bubble System WSG and K007232

• new WonderSwan emulation core courtesy of asiekierka (#2401)

• Virtual Boy changes

  • one notorious Virtual Boy quirk is that you cannot write to wave/modulation table memory unless all channels are disabled
  • Furnace wasn't taking this quirk into account, which means that exported VGMs wouldn't play on hardware
  • this release makes exported VGMs work on hardware by disabling all channels on wave change
  • however, this means there will be a "click" on every wave change, which can get very annoying
  • it is recommended you use static mode, or change waves sparingly...
  • there's a setting to go back to the old behavior, but keep in mind this will break VGM export and is not hardware-accurate!

• TFM import improvements

  • implement looping

• XM import improvements

  • new envelope conversion algorithm

• add ability to set multiple key binds for actions

• FM 30xx (hard reset envelope) now working on VGM export

• OPZ improvements (per-op frequency control including arp/pitch macros)

• support for MSX2 .dmf (no, I am not going to support its weird AY manners. sorry!)

• add ability to create a sample from a wavetable

• per-op fixed octave/block setting in OPN, OPL and ESFM (useful for SSG-EG)

• CSM on all OPN chips

• Combat Vehicle improvements

  • small stages, modifiers, special powerups and planes

• fix a possible crash on macOS when the font texture is too large

• fix two possible hangs in MIDI code when audio output isn't working

• fix crash when selecting all after expanding/collapsing/change-effect-counting channel

• OPN: fix possible crash when using FM effects on non-FM channels (issue #2286)

• fix some file loading exploits

  • negative sample length (issue #2316)
  • samples too long in .dmf
  • invalid pitches in .dmf

• command palette improvements

  • show shortcuts (for actions)
  • color the search characters
  • use non-greedy search to find optimal fuzzy match order

• fix the "Rendering..." window being too small at times

• add cursor undo/redo actions

• add the ability to set a channel visibility mask for user presets

  • use chanMask in the Advanced parameter. for example: chanMask=0,2 will hide the first and third channel.

• fix certain things not marking song as modified

• fix preset patches not having DC, DM and KSL set correctly in the editor

• fix WaveTools in wavetable editor not updating wave in chips

• fix volume portamento inhibiting volume column after it has reached target

• add setting to auto-zoom macro editor depending on macro length(s)

• horizontal wavetable list

• fix an EDxx bug (issue #2014)

• add ctrlWheelModifier option for Alt

• slightly improve the welcome screen

• SID2: fix chan osc overflow

• remove party mode

• fix order nibble when moving cursor with keys (issue #2170)

• fix QSound ADPCM in VGM export

• OPL3: fix 4-op mode toggle corrupting volume (#2171)

• fix YMF289 in ymfm

• Y8950: fix ADPCM pitch (issue #2028)

• add a warning when importing a MOD/S3M/XM/IT file for the first time

• implement auto-fill file name when saving in system file picker (Windows and macOS only)

• fix DT2 effect in OPM and OPZ

• fix possible issue in config files when a line is too long (issue #2025)

• freaking workaround for Flatpak quirks (issue #2096)

• fix built-in file picker X scroll (issue #2190)

• don't show duty macro in beeper-type instrument if ZX Spectrum is not present

• add a little visual description for chip channels in the chip selector

• fix "play/repeat from beginning" not doing so from beginning at times (issue #2182)

• Lynx VGM export sample support

• Lynx Load LFSR macro fix

• allow the user to change octave when the built-in file picker is open (issue #1895)

• VIC-20: add option to disable filters

• fix PZI import (it did not import most of the samples before)

• fix moveSelected going out of bounds

• fix several problems with AtomicSSG

• work around some possible text overflow situations by implementing a scroll text (issue #1961)

• fix incorrect commands on VGM export (issue #2226)

• C64: fix global param again... (issue #2181)

• fix file remaining open when loading .dmc or .brr

• MSM6258: fix panning in VGM export (#2249)

• fix sample loop crossfade overflow (thanks Eknous)

• handle more errors in DirectX 9 backend

• fix orders not scrolling when pattern changes due to cursor movement

• fix sample drawing rounding in sample editor

• fix backup size calculation

• text wrap for sub-song notes

• OPL: kind of fix drum muting (issue #1945)

• fix song timer drift (issue #2189)

• add a command line parameter for exporting text files

• add a command line parameter for exporting ROM where supported

• PCE: fix DAC data being offset in VGM export

• correct cursor position on song stop (issue #2274)

• drag-and-drop in assets to reorder them

• fix user systems not loading when language is not set to English

• SegaPCM: fix sample offset effect moving loop (issue #2306)

• YMZ280B: fix sample offset effect moving loop (issue #2213)

• fix possible bug notes in .mod import

• fix paste overflow not changing order

• fix panning in command stream export

• add ability to copy by dragging selection

• add ability to skip intro immediately with keyboard... somebody made one heck of a complaint despite a skip feature already existing

• add a button in sample editor to preview selection

• don't sort note keys in settings until Apply or OK are clicked (issue #2345)

• add "set effect" option to randomize

  • this sets the effect to a fixed value

• Amiga validation export improvements (now it uses VBlank interrupts and supports fast RAM)

• load fallback fonts in pattern font (issue #2312)

  • this may use too much video memory so I have added an option to disable...

• WaveSynth: add change detection (don't update wave if it is intact... issue #2298)

• PCE: fix sample volume and linger in VGM export (issues #2319 and #2322)

• ES5506: increase precision in Amiga pitch mode (fixes cal-cal.xm and issue #2120)

• fix compilation when using CMake 4.0

• scroll pattern view horizontally when moving the mouse cursor out of bounds during selection

• optimize pattern view a bit

• optimize order window as well

• disable 32-bit float audio export in per-chip mode (issue #2389)

• add an audio load chart

• fix samples sometimes not triggering in Amiga

• note input improvements during playback

• add a "sweep" option to sample editor apply filter (you no longer have to type two frequencies when you just want to use one)

• SM8521: fix chip output rate

• add DC offset correction settings for per-channel osc view

• ES5506: fix memory overflow

• X1-010: fix envelope slides in low-latency mode

• fix macro list jumping around in single macro editor layout

• improve the progress bar in per-channel audio export (issue #2431)

• OPNA/B: fix ADPCM-A/RSS muting with LLE core

• OPZ: add FMS2/AMS2 macros

• fix range chevron in arp/pitch macro being too large if horizontal zoom was set to a high enough value

• DS: fix non-8/16/IMA sample formats

• NES: fix envelope mode not being set when playing song (which would cause everything to be silent in specific circumstances)

• new demo songs

• translation updates

• several documentation updates

note for Windows users

there are two 64-bit versions: the normal one, and a "console" version.
the console version has the subsystem set to console so you can use Furnace for parsing files and/or playing in console mode (with the -console parameter). be noted that a command prompt will pop up when launching it through Explorer!
if you don't need to do that, just get the regular version.

this fixes a couple bugs, including a critical macOS crash on startup.

this is the first pre-release of the upcoming 0.6.8. give this one a try and report any issues you come across.

features coming in 0.6.8 include:

• SID3, OPL4 and Watara Supervision systems
• C64 4-bit PCM/digi (using volume control)
• OPZ improvements (per-op frequency control including arp/pitch macros)
• CSM on all OPN chips
• SNES anti-click
• 5E01 no sound fix
• POKEY SAP type R export (playable by Altirra and lzss-sap on hardware)
• performance optimizations for certain chips
  • up to 10 times less CPU usage during playback and faster audio exports
  • optimized chips include: PC Speaker, GA20, Amiga, PC Engine, SCC, NES, MMC5, VRC6, TIA, Virtual Boy, AY (not so much), Nintendo DS, T6W28, SN, SM8521, Bubble System WSG and K007232
• new WonderSwan emulation core courtesy of asiekierka (#2401)
• FM 30xx (hard reset envelope) now working on VGM export
• per-op fixed octave/block setting in OPN, OPL and ESFM (useful for SSG-EG)
• VGM export QSound ADPCM fix
• Virtual Boy VGM export fixes (now it works on real hardware)
• support for MSX2 .dmf (no, I am not going to support its weird AY manners. sorry!)
• FTM, TFM and XM import fixes
• note input improvements during playback
• ability to export ROM from command line (only on certain systems!)
• drag-and-drop in assets to reorder them
• translation updates
• many bug fixes

a more complete change log will be available in the 0.6.8 release notes.

I will release 0.6.8 in a couple days if no issues pop up.

note for Windows users

there are two 64-bit versions: the normal one, and a "console" version.
the console version has the subsystem set to console so you can use Furnace for parsing files and/or playing in console mode (with the -console parameter). be noted that a command prompt will pop up when launching it through Explorer!
if you don't need to do that, just get the regular version.

sorry, no AppImage version...

a build failure prevents me from making the AppImage release. for now, use the .tar.

thanks

• freq-mod: testing, assistance and overall help
• Electric Keet: documentation
• AshKirby: cheering
• cam900: OPL4
• akumanatt: OPN/OPL/ESFM fixed block
• asiekierka: WonderSwan core and SAP-R export
• yohannd1, alederer, daliacoss, LTVA and Eknous: miscellaneous contributions such as asset list drag-and-drop, OPN CSM, SID3 and others

this release fixes a major bug introduced in 0.6.6. NES DPCM sample loop wasn't working properly.

it also fixes 60xy in FM chips not working if x is between 1 to 4 (set op mask for one op).

to-do: write fancy summary explaining how this has import, a couple other features and bug fixes

change log

• S3M import - no longer beta!

  • many crashes and bugs fixed

• XM and IT import!

• instrument editor undo!

• add "absorb instrument" action

  • it changes the current instrument to the one at pattern cursor

• begin work on the ROM export framework

  • TIunA and ZSM export have been ported to it
  • this was done since TIunA export is a lengthy process due to multiple optimization passes
  • now you can see it in action, complete with progress bars

• sample bank import. the following formats are supported:

  • PMD YM2608 ADPCM-B sample bank (.ppc)
  • PDR 4-bit AY-3-8910 sample bank (.pps)
  • FMP YM2608 ADPCM-B sample bank (.pvi)
  • MDX OKI ADPCM sample bank (.pdx)
  • FMP 8-bit PCM sample bank (.pzi)
  • PMD 8-bit PCM sample bank (.p86)
  • PMD OKI ADPCM sample bank (.p)
  • thanks to freq-mod and LTVA

• AY improvements

  • add raw period and envelope period macros
  • timer effects (PWM!)
  • fix generation of garbage commands during VGM export

• FDS: add automatic modulation speed effect

  • I don't like how it works though

• add a couple new effects

  • panning slides: 83x0 slides left and 830x slides right
  • panbrello (wave panning left-right): 84xy where x is speed and y is depth
  • delayed mute: DCxx
  • volume portamento: D3xx and D4xx (fast)

• add DAC interrupt simulation to YM2612

  • allows you to recreate a sample playback quirk present in games like Sonic 2 and 3

• add progress bar during audio export

• add options to save all assets

• fix crash when switching OPL drums mode using 18xx

• fix crash when playing samples in banked MSM6295

• fix possible hang when loading instrument with invalid macro or op macro data

• Dave: fix hang when DAC rate is too high

• lots of documentation updates

  • including a quick start guide!

• better Windows icon

  • now it shows up on Windows XP

• the Linux release does not use system libintl anymore

  • it is too picky in regards to what is localized and what is not
  • too many issues led me to make this decision and switch to the built-in implementation

• fix another rounding error in ADSR/LFO macros when bottom is higher than top

• OPL: fix YMF262-LLE skipping some register writes

• new macro colors for certain types of macro

• do not play the intro when using software renderer

• ES5506: fix a bug in pitch slides

• C64 improvements

  • add filter toggle macro

• fix rendering not going well when using DirectX 9 backend on certain cards that do not support non-square textures

• fix fonts sometimes not loading

• remove waveform from OPM ins editor

• hide two Defle compatibility options when disabled

  • both are ridiculous... one is in Game Boy and the other in C64

• fix ## hiding channel, instrument and sample names

• fix files/directories named ## becoming invisible in built-in file picker

• improve status bar volume mapping

• add an option to scale macro editor zoom with macro length

• two more options for SL position in FM editor

• fix non-ASCII characters in user systems erasing them

• add "show in pattern/per-chan osc" options for per-channel export

• add a parameter which disables start-up error message box (-quiet)

  • does not have effect on Linux as errors do not show message boxes

• Game Boy: enable VIN mixing

  • useful for sound expansions
  • explanation: the Game Boy has a pin in the cartridge port which allows a cartridge to provide expansion audio, similar to the VRC6, VRC7 or FDS in Famicom.
  • however, whether to mix in the cartridge expansion audio can be controlled by a register.
  • in previous versions, Furnace set this register to off. this prevented expansion audio from working.
  • now it is set to on. this means that if you develop a player with expansion audio support, it will work.

• add new VERA revision

• fix Y8950 ADPCM memory addressing

  • max sample size is 256K

• NES DPCM loop position

• SN: fix arp macros in easy period mapping

• include song comments in VGM export

• WonderSwan: fix missing panning macros

• fix QSound ADPCM in VGM export

• add operator mask effect (60xx) for FM chips which support it (OPN and OPM)

• SNES: add sample interpolation option

• translation updates

erratum

effect 601x-604x to set operator mask of each operator is not implemented. sorry!
use 600x for now.

thanks

to be done... I will be back

a new era has begun.

YouTube video

changes

• software tuned TIA driver: TIunA!
  • similar to TIATune
  • uses rapid pitch changing to achieve more precise tuning
  • includes export option
• fix locale installation path on Linux (no more patch)
• S3M import (beta)
  • there are a couple gotchas
  • import for XM and IT modules is coming soon
• add new revision of VERA chip with slightly different volume table
• SNES improvements
  • add option to the sample editor not to use BRR filter, which removes glitches when using sample offset/position effects
• ES5506 changes
  • mostly for S3M import and upcoming XM/IT import
  • Amiga volume and pitch options
• added more vibrato shapes
  • see the manual for more information (effect E3xx)
• translation updates

note for macOS users

hopefully this doesn't crash anymore.

thanks

• Abstract
• Natt Akuma

important update for those using macOS and those without video cards.

changes

• default to OpenGL on macOS

  • the Metal backend has rendered Furnace unusable for many users, therefore I have decided to set the OpenGL backend as default.
  • if you still cannot launch Furnace, try a configuration reset by removing the config files in ~/Library/Application Support/Furnace.

• fix crash when using software renderer

  • previously, Furnace would crash during the intro...

• Furnace Localization!

  • that's right - Furnace translated to many languages!
  • currently supporting (in order of completion) Spanish, Swedish, Polish, Russian, Portuguese (Brazil), Slovak and Indonesian.
  • work in progress languages include Korean, Thai, Dutch, and Armenian. these are hidden but accessible if either your computer is set to one of these languages, or you edit the config manually.
  • if you want to translate Furnace to your language, feel free to! check out the po directory in the repository for more.

• more Furnace for Legacy Systems

  • new DirectX 9 render backend
    • designed to work with older cards and drivers that don't support OpenGL 1.1 (or support it poorly)
  • disable SSE on 32-bit Windows builds
    • so you can run this on Pentium

• improve audio export options

  • now you can disable channels during per-channel export
  • also change the sample rate and more

• backup management

  • see how much disk space is being used by backups
  • purge old backups
  • change backup settings such as interval and number of copies
  • go to Settings > Backup to see it

• improve cursor focus when clicking on the pattern

  • now it doesn't jump around anymore

• fix crash when trying to add or clone a chip after the 32 chip limit has been reached

• DS: fix inability to go back to sample mode in PSG channels

• add automatic noise freq (AutoPWM) effect for AY8930

• add action to move selected content in pattern editor

• OPLL: add effect to change patch (10xx)

• add settings to configure render backend

• add settings to import/export config and do a factory reset

• add setting to automatically fill in the name field of the file picker when saving

  • only works on the built-in file picker. sorry!

• add Japanese and Korean versions of IBM Plex Sans

• expose all audio formats supported by libsndfile

• fix rounding error in ADSR and LFO macros when bottom is higher than top

• fix left and right outputs being swapped when using YM2608-LLE

• fix old sample offset compatibility flag not being there at all

• fall back to software rendering when GL pixel format is incompatible

• more aggressive power saving

• fix a conflict in the colors of SID2 and C64 instruments

• fix sudden window scroll if you have the instrument/wave/sample lists untabbed

• fix on/off mute in VIC-20

• fix fade-in happening when enabling startup fade-in

• fix Wayland icon

  • thanks ColinKinloch

• remove basic output channels selector

  • now you can use your 16-output audio interface with Furnace