0.6pre1 - introduce the final changes

- implement E1xy/E2xy Defle bug when using same note twice - add SNK Touchdown Fever preset - update README.md and to-do list - update credits thank you for your patience! see you in 0.6pre1.5 coming soon...
2025-01-03 06:01:29 +00:00 · 2022-06-29 04:57:05 -05:00 · 2022-06-29 04:57:05 -05:00 · a8a38dce2b
commit a8a38dce2b
parent 6a35258e9b
14 changed files with 222 additions and 91 deletions
--- a/README.md
+++ b/README.md
@ -1,8 +1,8 @@
 # Furnace Tracker

-![screenshot](papers/screenshot1.png)
+![screenshot](papers/screenshot2.png)

-this is a multi-system chiptune tracker.
+the biggest multi-system chiptune tracker ever made!

 [downloads](#downloads) | [discussion/help](#quick-references) | [developer info](#developer-info) | [unofficial packages](#unofficial-packages) | [FAQ](#frequently-asked-questions)

@ -15,34 +15,91 @@ check out the [Releases](https://github.com/tildearrow/furnace/releases) page. a

 ## features

- supports the following systems:
-  - Sega Genesis
-  - Sega Master System
+- over 50 sound chips - and counting:
+  - Yamaha FM chips:
+    - YM2151 (OPM)
+    - YM2203 (OPN)
+    - YM2413 (OPLL)
+    - YM2414 (OPZ) used in Yamaha TX81Z
+    - YM2608 (OPNA) used in PC-98
+    - YM2610 (OPNB) used in Neo Geo
+    - YM2610B (OPNB2)
+    - YM2612 (OPN2) used in Sega Genesis and FM Towns
+    - YM3526 (OPL) used in C64 Sound Expander
+    - YM3812 (OPL2)
+    - YMF262 (OPL3) with full 4-op support!
+    - Y8950 (OPL with ADPCM)
+  - square wave chips:
+    - AY-3-8910/YM2149(F) used in several computers and game consoles
+    - Commodore VIC used in the VIC-20
+    - Microchip AY8930
+    - TI SN76489 used in Sega Master System and BBC Micro
+    - PC Speaker
+    - Philips SAA1099 used in SAM Coupé
+  - sample chips:
+    - Amiga
+    - SegaPCM - all 16 channels
+    - Capcom QSound
+    - Yamaha YMZ280B (PCMD8)
+    - Ricoh RF5C68 used in Sega CD and FM Towns
+    - OKI MSM6258 and MSM6295
+  - wavetable chips:
+    - HuC6280 used in PC Engine
+    - Konami Bubble System WSG
+    - Konami SCC/SCC+
+    - Namco arcade chips (WSG/C15/C30)
+    - WonderSwan
+    - Seta/Allumer X1-010
+  - NES (Ricoh 2A03/2A07), with additional expansion sound support:
+    - Konami VRC6
+    - Konami VRC7
+    - MMC5
+    - Famicom Disk System
+    - Sunsoft 5B
+    - Namco 163
+    - Family Noraebang (OPLL)
+  - SID (6581/8580) used in Commodore 64
+  - Mikey used in Atari Lynx
+  - ZX Spectrum beeper (SFX-like engine)
+  - TIA used in Atari 2600
  - Game Boy
-  - PC Engine
-  - NES
-  - Commodore 64
-  - Yamaha YM2151 (plus PCM)
-  - Neo Geo
-  - AY-3-8910 (ZX Spectrum, Atari ST, etc.)
-  - Microchip AY8930
-  - Philips SAA1099
-  - Amiga
-  - TIA (Atari 2600/7800)
- multiple sound chips in a single song!
- DefleMask compatibility - loads .dmf modules, .dmp instruments and .dmw wavetables
- clean-room design (guesswork and ABX tests only, no decompilation involved)
- bug/quirk implementation for increased playback accuracy
- VGM and audio file export
- accurate emulation cores whether possible (Nuked, MAME, SameBoy, Mednafen PCE, puNES, reSID, Stella, SAASound and ymfm)
- additional features on top:
+  - modern/fantasy:
+    - Commander X16 VERA
+    - tildearrow Sound Unit
+- mix and match sound chips!
+  - over 200 ready to use presets from computers, game consoles and arcade boards...
+  - ...or create your own - up to 32 of them or a total of 128 channels!
+- DefleMask compatibility
+  - loads .dmf modules from all versions (beta 1 to 1.1.3)
+  - saves .dmf modules - both modern and legacy
+    - Furnace doubles as a module downgrader
+  - loads .dmp instruments and .dmw wavetables as well
+  - clean-room design (guesswork and ABX tests only, no decompilation involved)
+  - bug/quirk implementation for increased playback accuracy through compatibility flags
+- VGM export
+- modular layout that you may adapt to your needs
+- audio file export - entire song, per system or per channel
+- quality emulation cores (Nuked, MAME, SameBoy, Mednafen PCE, NSFplay, puNES, reSID, Stella, SAASound, vgsound_emu and ymfm)
+- wavetable synthesizer
+  - available on wavetable chips
+  - create complex sounds with ease - provide up to two wavetables, select and effect and let go!
+- MIDI input support
+- [Fractal Sound](https://gitlab.com/Natsumi/Fractal-Sound) support!
+  - the game-ready Sega Genesis/Mega Drive sound driver!
+  - compose your songs in Furnace using the Fractal Sound presets and then use them in your games with Fractal!
+- additional features:
  - FM macros!
  - negative octaves
  - arbitrary pitch samples
  - sample loop points
-  - SSG envelopes in Neo Geo
+  - SSG envelopes and ADPCM-B in Neo Geo
  - full duty/cutoff range in C64
-  - ability to change tempo mid-song with `Cxxx` effect (`xxx` between `000` and `3ff`)
+  - ability to change tempo mid-song
+  - multiple sub-songs in a module
+  - per-channel oscilloscope with waveform centering
+  - built-in sample editor
+  - chip mixing settings
+  - built-in visualizer in pattern view
 - open-source under GPLv2 or later.

 ***
@ -59,7 +116,7 @@ some people have provided packages for Unix/Unix-like distributions. here's a li
 - **Arch Linux**: [furnace-git is in the AUR.](https://aur.archlinux.org/packages/furnace-git) thank you Essem!
 - **FreeBSD**: [a package in ports](https://www.freshports.org/audio/furnace/) is available courtesy of ehaupt.
 - **Nix**: [package](https://search.nixos.org/packages?channel=unstable&show=furnace&from=0&size=50&sort=relevance&type=packages&query=furnace) thanks to OPNA2608.
- - **OpenSUSE**: [a package](https://software.opensuse.org/package/furnace) is available, courtesy of fpesari.
+ - **openSUSE**: [a package](https://software.opensuse.org/package/furnace) is available, courtesy of fpesari.

 ***
 # developer info
@ -73,11 +130,17 @@ if you can't download these artifacts (because GitHub requires you to be logged
 ## dependencies

 - CMake
- SDL2
- zlib
- JACK (optional)
+- JACK (optional, macOS/Linux only)

-SDL2 and zlib are included as submodules.
+if building under Windows or macOS, no additional dependencies are required.
+otherwise, you may also need the following:
+
+- libpulse
+- libx11
+- libasound
+- libGL
+
+some Linux distributions (e.g. Ubuntu or openSUSE) will require you to install the `-dev` versions of these.

 ## getting the source

@ -127,14 +190,20 @@ Available options:
 | Name | Default | Description |
 | :--: | :-----: | ----------- |
 | `BUILD_GUI` | `ON` | Build the tracker (disable to build only a headless player) |
+| `USE_RTMIDI` | `ON` | Build with MIDI support using RtMidi |
+| `USE_SDL2` | `ON` | Build with SDL2 (required to build with GUI) |
+| `USE_SNDFILE` | `ON` | Build with libsndfile (required in order to work with audio files) |
+| `USE_BACKWARD` | `ON` | Use backward-cpp to print a backtrace on crash/abort |
 | `WITH_JACK` | `ON` if system-installed JACK detected, otherwise `OFF` | Whether to build with JACK support. Auto-detects if JACK is available |
+| `SYSTEM_FFTW` | `OFF` | Use a system-installed version of FFTW instead of the vendored one |
 | `SYSTEM_FMT` | `OFF` | Use a system-installed version of fmt instead of the vendored one |
 | `SYSTEM_LIBSNDFILE` | `OFF` | Use a system-installed version of libsndfile instead of the vendored one |
+| `SYSTEM_RTMIDI` | `OFF` | Use a system-installed version of RtMidi instead of the vendored one |
 | `SYSTEM_ZLIB` | `OFF` | Use a system-installed version of zlib instead of the vendored one |
 | `SYSTEM_SDL2` | `OFF` | Use a system-installed version of SDL2 instead of the vendored one |
 | `WARNINGS_ARE_ERRORS` | `OFF` (but consider enabling this & reporting any errors that arise from it!) | Whether warnings in furnace's C++ code should be treated as errors |

-## usage
+## console usage

 ```
 ./furnace
@ -156,36 +225,21 @@ this will play a compatible file and enable the commands view.

 **note that these commands only actually work in Linux environments. on other command lines, such as Windows' Command Prompt, or MacOS Terminal, it may not work correctly.**

-***
-# notes
-
-> how do I use Neo Geo SSG envelopes?
-
-the following effects are provided:
-
- `22xy`: set envelope mode.
-  - `x` sets the envelope shape, which may be one of the following:
-    - `0: \___` decay
-    - `4: /___` attack once
-    - `8: \\\\` saw
-    - `9: \___` decay
-    - `A: \/\/` inverse obelisco
-    - `B: \¯¯¯` decay once
-    - `C: ////` inverse saw
-    - `D: /¯¯¯` attack
-    - `E: /\/\` obelisco
-    - `F: /___` attack once
-  - if `y` is 1 then the envelope will affect this channel.
- `23xx`: set envelope period low byte.
- `24xx`: set envelope period high byte.
- `25xx`: slide envelope period up.
- `26xx`: slide envelope period down.
-
-a lower envelope period will make the envelope run faster.
-
 ***
 # frequently asked questions

+> woah! 50 sound chips?! I can't believe it!
+
+yup, it's real.
+
+> where's the manual?
+
+see [papers/](papers/README.md). it's kind of incomplete, but at least the systems (sound chips) section is there.
+
+> it doesn't open under macOS!
+
+this is due to Apple's application signing policy. a workaround is to right click on the Furnace app icon and select Open.
+
 > how do I use C64 absolute filter/duty?

 on Instrument Editor in the C64 tab there are two options to toggle these.
@ -195,25 +249,27 @@ also provided are two effects:
 - `4xxx`: set fine cutoff. `xxx` range is 000-7ff.
 additionally, you can change the cutoff and/or duty as a macro inside an instrument by clicking the `absolute cutoff macro` and/or `absolute duty macro` checkbox at the bottom of the instrument. (for the filter, you also need to click the checkbox that says `volume macro is cutoff macro`.)

-> Q: how do I use PCM on a PCM-capable system?
+> how do I use PCM on a PCM-capable system?

-A: Two possibilities: the recommended way is via creating the "Amiga/Sample" type instrument and assigning sample to it, or via old, Deflemask-compatible method, using `17xx` effect
+two possibilities:
+- the recommended way is by creating the "Sample" type instrument and assigning a sample to it.
+- otherwise you may employ the DefleMask-compatible method, using `17xx` effect.

-> Q: my song sounds very odd at a certain point
+> my .dmf song sounds very odd at a certain point

-A: file a bug report. use the Issues page. it's probably another playback inaccuracy.
+file a bug report. use the Issues page. it's probably another playback inaccuracy.

-> Q: my song sounds correct, but it doesn't in DefleMask
+> my .dmf song sounds correct, but it doesn't in DefleMask

-A: file a bug report **here**. it still is a playback inaccuracy.
+file a bug report **here**. it still is a playback inaccuracy.

-> Q: my C64 song sounds terrible after saving as .dmf!
+> my song sounds terrible after saving as .dmf!

-A: that's a limitation of the DefleMask format. save in Furnace song format instead (.fur).
+the DefleMask format has several limitations. save in Furnace song format instead (.fur).

-> Q: how do I solo channels?
+> how do I solo channels?

-A: right click on the channel name.
+right click on the channel name.

 ***
 # footnotes
--- a/TODO.md
+++ b/TODO.md
@ -1,8 +1,4 @@
-# to-do for 0.6pre1
-
- implement Defle slide bug when using E1xy/E2xy and repeating origin note (requires format change)
-
-# to-do for 0.6pre2 (as this requires new data structures)
+# to-do for 0.6pre1.5-0.6pre2

 - rewrite the system name detection function anyway
  - this involves the addition of a new "system" field in the song (which solves the problem)
--- a/papers/format.md
+++ b/papers/format.md
@ -304,7 +304,7 @@ size | description
  1  | new ins affects envelope (Game Boy) (>=72) or reserved
  1  | ExtCh channel state is shared (>=78) or reserved
  1  | ignore DAC mode change outside of intended channel (>=83) or reserved
-  1  | E1xx and E2xx also take priority over Slide00 (>=83) or reserved
+  1  | E1xy and E2xy also take priority over Slide00 (>=83) or reserved
  1  | new Sega PCM (with macros and proper vol/pan) (>=84) or reserved
  1  | weird f-num/block-based chip pitch slides (>=85) or reserved
  1  | SN duty macro always resets phase (>=86) or reserved
@ -315,7 +315,8 @@ size | description
  1  | new volume scaling strategy (>=99) or reserved
  1  | volume macro still applies after end (>=99) or reserved
  1  | broken outVol (>=99) or reserved
-  9  | reserved
+  1  | E1xy and E2xy stop on same note (>=100) or reserved
+  8  | reserved
 --- | **virtual tempo data**
  2  | virtual tempo numerator of first song (>=96) or reserved
  2  | virtual tempo denominator of first song (>=96) or reserved
--- a/papers/screenshot2.png
+++ b/papers/screenshot2.png
--- a/res/Info.plist
+++ b/res/Info.plist
@ -15,17 +15,17 @@
 	<key>CFBundleInfoDictionaryVersion</key>
 	<string>6.0</string>
 	<key>CFBundleLongVersionString</key>
-	<string>0.6pre0</string>
+	<string>0.6pre1</string>
 	<key>CFBundleName</key>
 	<string>Furnace</string>
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>0.6pre0</string>
+	<string>0.6pre1</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>0.6pre0</string>
+	<string>0.6pre1</string>
 	<key>NSHumanReadableCopyright</key>
 	<string></string>
 	<key>NSHighResolutionCapable</key>
--- a/res/furnace.appdata.xml
+++ b/res/furnace.appdata.xml
@ -10,10 +10,13 @@
  
  <description>
    <p>
-      this is a work-in-progress chiptune tracker which interacts with DefleMask module files (.dmf).
+      the biggest chiptune tracker ever made!
    </p>
    <p>
-      it supports creating songs for Sega Genesis, Master System, Game Boy, PC Engine, NES, C64, YM2151/PCM and Neo Geo. featuring a clean-room design (zero reverse-engineered code and zero decompilation; using official DMF specs, guesswork and ABX tests only), bug/quirk implementation for increased playback accuracy, and accurate emulation cores whether possible (Nuked, MAME, SameBoy, Mednafen PCE, puNES, reSID and ymfm).
+      it allows you to create songs using a music tracker interface for several computer/game console/arcade sound chips.
+    </p>
+    <p>
+      it also offers DefleMask compatibility, allowing you to import your songs and even export them back for interoperability.
    </p>
  </description>
  
--- a/src/engine/engine.h
+++ b/src/engine/engine.h
@ -45,8 +45,8 @@
 #define BUSY_BEGIN_SOFT softLocked=true; isBusy.lock();
 #define BUSY_END isBusy.unlock(); softLocked=false;

-#define DIV_VERSION "dev99"
-#define DIV_ENGINE_VERSION 99
+#define DIV_VERSION "0.6pre1"
+#define DIV_ENGINE_VERSION 100

 // for imports
 #define DIV_VERSION_MOD 0xff01
@ -88,7 +88,7 @@ struct DivChannelState {
  int tremoloDepth, tremoloRate, tremoloPos;
  unsigned char arp, arpStage, arpTicks, panL, panR;
  bool doNote, legato, portaStop, keyOn, keyOff, nowYouCanStop, stopOnOff;
-  bool arpYield, delayLocked, inPorta, scheduledSlideReset, shorthandPorta, noteOnInhibit, resetArp;
+  bool arpYield, delayLocked, inPorta, scheduledSlideReset, shorthandPorta, wasShorthandPorta, noteOnInhibit, resetArp;

  int midiNote, curMidiNote, midiPitch;
  size_t midiAge;
@ -136,6 +136,7 @@ struct DivChannelState {
    inPorta(false),
    scheduledSlideReset(false),
    shorthandPorta(false),
+    wasShorthandPorta(false),
    noteOnInhibit(false),
    resetArp(false),
    midiNote(-1),
--- a/src/engine/fileOps.cpp
+++ b/src/engine/fileOps.cpp
@ -171,6 +171,7 @@ bool DivEngine::loadDMF(unsigned char* file, size_t len) {
    ds.newVolumeScaling=false;
    ds.volMacroLinger=false;
    ds.brokenOutVol=true; // ???
+    ds.e1e2StopOnSameNote=true;

    // 1.1 compat flags
    if (ds.version>24) {
@ -1043,6 +1044,9 @@ bool DivEngine::loadFur(unsigned char* file, size_t len) {
      ds.volMacroLinger=false;
      ds.brokenOutVol=true;
    }
+    if (ds.version<100) {
+      ds.e1e2StopOnSameNote=false;
+    }
    ds.isDMF=false;

    reader.readS(); // reserved
@ -1439,7 +1443,12 @@ bool DivEngine::loadFur(unsigned char* file, size_t len) {
        reader.readC();
        reader.readC();
      }
-      for (int i=0; i<9; i++) {
+      if (ds.version>=100) {
+        ds.e1e2StopOnSameNote=reader.readC();
+      } else {
+        reader.readC();
+      }
+      for (int i=0; i<8; i++) {
        reader.readC();
      }
    }
@ -2912,7 +2921,8 @@ SafeWriter* DivEngine::saveFur(bool notPrimary) {
  w->writeC(song.newVolumeScaling);
  w->writeC(song.volMacroLinger);
  w->writeC(song.brokenOutVol);
-  for (int i=0; i<9; i++) {
+  w->writeC(song.e1e2StopOnSameNote);
+  for (int i=0; i<8; i++) {
    w->writeC(0);
  }

--- a/src/engine/playback.cpp
+++ b/src/engine/playback.cpp
@ -456,6 +456,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
          chan[i].nowYouCanStop=false;
          chan[i].stopOnOff=false;
          chan[i].scheduledSlideReset=false;
+          chan[i].wasShorthandPorta=false;
          chan[i].inPorta=false;
          if (!song.arpNonPorta) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,true,0));
        }
@ -475,6 +476,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
          chan[i].nowYouCanStop=false;
          chan[i].stopOnOff=false;
          chan[i].scheduledSlideReset=false;
+          chan[i].wasShorthandPorta=false;
          chan[i].inPorta=false;
          if (!song.arpNonPorta) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,true,0));
        }
@ -494,6 +496,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
            chan[i].portaNote=chan[i].note;
            chan[i].portaSpeed=effectVal;
            chan[i].inPorta=true;
+            chan[i].wasShorthandPorta=false;
          }
          chan[i].portaStop=true;
          if (chan[i].keyOn) chan[i].doNote=false;
@ -573,6 +576,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
        if ((effectVal&15)!=0) {
          chan[i].inPorta=true;
          chan[i].shorthandPorta=true;
+          chan[i].wasShorthandPorta=true;
          if (!song.brokenShortcutSlides) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,true,0));
          if (song.e1e2AlsoTakePriority) lastSlide=0x1337; // ...
        } else {
@ -590,6 +594,7 @@ void DivEngine::processRow(int i, bool afterDelay) {
        if ((effectVal&15)!=0) {
          chan[i].inPorta=true;
          chan[i].shorthandPorta=true;
+          chan[i].wasShorthandPorta=true;
          if (!song.brokenShortcutSlides) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,true,0));
          if (song.e1e2AlsoTakePriority) lastSlide=0x1337; // ...
        } else {
@ -715,7 +720,14 @@ void DivEngine::processRow(int i, bool afterDelay) {
      dispatchCmd(DivCommand(DIV_CMD_LEGATO,i,chan[i].note));
    } else {
      if (chan[i].inPorta && chan[i].keyOn && !chan[i].shorthandPorta) {
-        chan[i].portaNote=chan[i].note;
+        if (song.e1e2StopOnSameNote && chan[i].wasShorthandPorta) {
+          chan[i].portaSpeed=-1;
+          if (!song.brokenShortcutSlides) dispatchCmd(DivCommand(DIV_CMD_PRE_PORTA,i,false,0));
+          chan[i].wasShorthandPorta=false;
+          chan[i].inPorta=false;
+        } else {
+          chan[i].portaNote=chan[i].note;
+        }
      } else if (!chan[i].noteOnInhibit) {
        dispatchCmd(DivCommand(DIV_CMD_NOTE_ON,i,chan[i].note,chan[i].volume>>8));
        keyHit[i]=true;
--- a/src/engine/song.h
+++ b/src/engine/song.h
@ -494,6 +494,7 @@ struct DivSong {
  bool newVolumeScaling;
  bool volMacroLinger;
  bool brokenOutVol;
+  bool e1e2StopOnSameNote;

  std::vector<DivInstrument*> ins;
  std::vector<DivWavetable*> wave;
@ -591,7 +592,8 @@ struct DivSong {
    noOPN2Vol(false),
    newVolumeScaling(true),
    volMacroLinger(true),
-    brokenOutVol(false) {
+    brokenOutVol(false),
+    e1e2StopOnSameNote(false) {
    for (int i=0; i<32; i++) {
      system[i]=DIV_SYSTEM_NULL;
      systemVol[i]=64;
--- a/src/gui/about.cpp
+++ b/src/gui/about.cpp
@ -108,9 +108,10 @@ const char* aboutLine[]={
  "Portable File Dialogs by Sam Hocevar",
  "Native File Dialog by Frogtoss Games",
  "RtMidi by Gary P. Scavone",
+  "FFTW by Matteo Frigo and Steven G. Johnson",
  "backward-cpp by Google",
  "adpcm by superctr",
-  "Nuked-OPL3/OPLL/OPM/OPN2 by Nuke.YKT",
+  "Nuked-OPL3/OPLL/OPM/OPN2/PSG by Nuke.YKT",
  "ymfm by Aaron Giles",
  "MAME SN76496 by Nicola Salmoria",
  "MAME AY-3-8910 by Couriersud",
@ -131,7 +132,7 @@ const char* aboutLine[]={
  "VICE VIC-20 sound core by Rami Rasanen and viznut",
  "VERA sound core by Frank van den Hoef",
  "K005289 emulator by cam900",
-  "Namco 163 emulator by cam900",
+  "Namco C163 emulator by cam900",
  "Seta X1-010 emulator by cam900",
  "Konami VRC6 emulator by cam900",
  "Konami SCC emulator by cam900",
--- a/src/gui/compatFlags.cpp
+++ b/src/gui/compatFlags.cpp
@ -115,6 +115,10 @@ void FurnaceGUI::drawCompatFlags() {
    if (ImGui::IsItemHovered()) {
      ImGui::SetTooltip("does this make any sense by now?");
    }
+    ImGui::Checkbox("E1xy/E2xy stop when repeating the same note",&e->song.e1e2StopOnSameNote);
+    if (ImGui::IsItemHovered()) {
+      ImGui::SetTooltip("ugh, if only this wasn't a thing...");
+    }
    ImGui::Checkbox("SN76489 duty macro always resets phase",&e->song.snDutyReset);
    if (ImGui::IsItemHovered()) {
      ImGui::SetTooltip("when enabled, duty macro will always reset phase, even if its value hasn't changed.");
--- a/src/gui/presets.cpp
+++ b/src/gui/presets.cpp
@ -1808,6 +1808,34 @@ void FurnaceGUI::initSystemPresets() {
      0
    }
  ));
+  cat.systems.push_back(FurnaceGUISysDef(
+    "SNK Touchdown Fever", {
+      DIV_SYSTEM_OPL, 64, 0, 2,
+      DIV_SYSTEM_Y8950, 64, 0, 2,
+      0
+    }
+  ));
+  cat.systems.push_back(FurnaceGUISysDef(
+    "SNK Touchdown Fever (drums mode on OPL)", {
+      DIV_SYSTEM_OPL_DRUMS, 64, 0, 2,
+      DIV_SYSTEM_Y8950, 64, 0, 2,
+      0
+    }
+  ));
+  cat.systems.push_back(FurnaceGUISysDef(
+    "SNK Touchdown Fever (drums mode on Y8950)", {
+      DIV_SYSTEM_OPL, 64, 0, 2,
+      DIV_SYSTEM_Y8950_DRUMS, 64, 0, 2,
+      0
+    }
+  ));
+  cat.systems.push_back(FurnaceGUISysDef(
+    "SNK Touchdown Fever (drums mode on OPL and Y8950)", {
+      DIV_SYSTEM_OPL_DRUMS, 64, 0, 2,
+      DIV_SYSTEM_Y8950_DRUMS, 64, 0, 2,
+      0
+    }
+  ));
  cat.systems.push_back(FurnaceGUISysDef(
    "Alpha denshi Alpha-68K", {
      DIV_SYSTEM_OPN, 64, 0, 3, // 3MHz
--- a/src/main.cpp
+++ b/src/main.cpp
@ -140,20 +140,37 @@ TAParamResult pVersion(String) {
  printf("- libsndfile by Erik de Castro Lopo and rest of libsndfile team (LGPLv2.1)\n");
  printf("- SDL2 by Sam Lantinga (zlib license)\n");
  printf("- zlib by Jean-loup Gailly and Mark Adler (zlib license)\n");
+  printf("- RtMidi by Gary P. Scavone (RtMidi license)\n");
+  printf("- backward-cpp by Google (MIT)\n");
  printf("- Dear ImGui by Omar Cornut (MIT)\n");
+  printf("- Portable File Dialogs by Sam Hocevar (WTFPL)\n");
+  printf("- Native File Dialog (modified version) by Frogtoss Games (zlib license)\n");
+  printf("- FFTW by Matteo Frigo and Steven G. Johnson (GPLv2)\n");
  printf("- Nuked-OPM by Nuke.YKT (LGPLv2.1)\n");
  printf("- Nuked-OPN2 by Nuke.YKT (LGPLv2.1)\n");
+  printf("- Nuked-OPL3 by Nuke.YKT (LGPLv2.1)\n");
+  printf("- Nuked-OPLL by Nuke.YKT (GPLv2)\n");
+  printf("- Nuked-PSG (modified version) by Nuke.YKT (GPLv2)\n");
  printf("- ymfm by Aaron Giles (BSD 3-clause)\n");
+  printf("- adpcm by superctr (public domain)\n");
  printf("- MAME SN76496 emulation core by Nicola Salmoria (BSD 3-clause)\n");
  printf("- MAME AY-3-8910 emulation core by Couriersud (BSD 3-clause)\n");
  printf("- MAME SAA1099 emulation core by Juergen Buchmueller and Manuel Abadia (BSD 3-clause)\n");
-  printf("- SAASound (BSD 3-clause)\n");
+  printf("- MAME Namco WSG by Nicola Salmoria and Aaron Giles (BSD 3-clause)\n");
+  printf("- MAME RF5C68 core by Olivier Galibert and Aaron Giles (BSD 3-clause)\n");
+  printf("- MAME MSM6258 core by Barry Rodewald (BSD 3-clause)\n");
+  printf("- MAME YMZ280B core by Aaron Giles (BSD 3-clause)\n");
+  printf("- QSound core by superctr (BSD 3-clause)\n");
+  printf("- VICE VIC-20 by Rami Rasanen and viznut (GPLv2)\n");
+  printf("- VERA core by Frank van den Hoef (BSD 2-clause)\n");
+  printf("- SAASound by Dave Hooper and Simon Owen (BSD 3-clause)\n");
  printf("- SameBoy by Lior Halphon (MIT)\n");
-  printf("- Mednafen PCE by Mednafen Team (GPLv2)\n");
+  printf("- Mednafen PCE and WonderSwan by Mednafen Team (GPLv2)\n");
  printf("- puNES by FHorse (GPLv2)\n");
+  printf("- NSFPlay by Brad Smith and Brezza (unknown open-source license)\n");
  printf("- reSID by Dag Lem (GPLv2)\n");
  printf("- Stella by Stella Team (GPLv2)\n");
-  printf("- vgsound_emu by cam900 (BSD 3-clause)\n");
+  printf("- vgsound_emu (first version) by cam900 (BSD 3-clause)\n");
  return TA_PARAM_QUIT;
 }