iomonad · October 31, 2024 09:37 · Aug 29, 2024 · Dec 1, 2022 · Jan 8, 2022 · Jan 8, 2022
diff --git a/YamahaFM.md b/YamahaFM.md
@@ -230,6 +230,7 @@ Brandish VT (PC-98), Dragon Slayer: TLoH II (PC-98, OPNA), Sorcerian (PC-88, OPN
 - 1987, used in synths TX81Z, DX11, YS100, YS200, PortaTone PSR-6300, PSR-80 and DSR-2000
 - 8 channels (4-op), 8 waveforms, two LFOs
 - combines the 8 algorithms of YM2151/OPM with 8 waveforms, allowing for sophisticated sounds. Interestingly, borrows the waveform concept from OPL series but uses custom list of waveforms.
+- Fixed frequency mode (lock frequency of one or more operators, similar to DX7) (8 Hz - 32640 Hz)
 
 ## YM2424 (OPZII, FM Operator Type-Z-II)
 - 1989, only known to be used in V50 (uses 2xYM2424 for 16 note polyphony)

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -438,7 +438,7 @@ Channel 3 has two special modes:
 2. [Madbrain - Oskari goes to Soundblasterland (AdlibTracker2)](https://soundcloud.com/madbr/oskari-goes-to)
 3. [Encore - The Abscence of Julia (AdlibTracker2)](http://www.adlibtracker.net/files/encore_-_the_absence_of_julia.mp3)
 4. [Benjamin Gerardin - High Tech Environment III (AdlibTracker2)](http://adlibtracker.net/files/benjamin_gerardin_-_high_tech_environment_iii.mp3)
-5. [naruto - MoonDriver for OPL3 DEMO](https://soundcloud.com/naruto2413/moondriver-for-opl3-demo-001-004)
+5. [naruto - MoonDriver for OPL3 DEMO](https://vgmrips.net/packs/pack/moondriver-demo-msx2#01-opl3-demo-001)
 6. [Painful Sigh - Miwaku no Chousho (1995)](https://vgmrips.net/packs/pack/miwaku-no-chousho-nec-pc-9801#01-painful-sigh) (PC-9801, YMF262)
 7. [Sky of the City - Doukyusei 2 (1995)](http://vgmrips.net/packs/pack/doukyusei-2-ibm-pc#03-sky-of-the-city) (DOS, YMF262)
 

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -272,7 +272,7 @@ The chip is possibly stereo. Channel 3 mode is absent.
 6. [Red-Hot Desert - R-Type Leo (1992)](http://vgmrips.net/packs/pack/r-type-leo-irem-m92#04-red-hot-desert-area-2) (Arcade, YM2151, GA20)
 7. [Photonic - Room Service](https://archive.org/details/Osc63VOPM/2photonic-RoomService.mp3#) (VOPM VST)
 8. [pedalsteeldrummer - Strawberries and Cream](https://archive.org/details/Osc63VOPM/8pedalsteeldrummer-StrawberriesAndCream.mp3#)  (VOPM VST)
-9. [Keishi Yonao - Eusion](https://www.youtube.com/watch?v=wK60QFPhHOA)  (iYM2151 Demo song, composer of Yu-No)
+9. [Keishi Yonao - Eusion](https://www.youtube.com/watch?v=wK60QFPhHOA)  (iYM2151 Demo song)
 
 -------
 # OPN

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -439,7 +439,7 @@ Channel 3 has two special modes:
 3. [Encore - The Abscence of Julia (AdlibTracker2)](http://www.adlibtracker.net/files/encore_-_the_absence_of_julia.mp3)
 4. [Benjamin Gerardin - High Tech Environment III (AdlibTracker2)](http://adlibtracker.net/files/benjamin_gerardin_-_high_tech_environment_iii.mp3)
 5. [naruto - MoonDriver for OPL3 DEMO](https://soundcloud.com/naruto2413/moondriver-for-opl3-demo-001-004)
-6. [Painful Sigh - Miwaku no Chousho (1995)](http://vgmrips.net/packs/pack/miwaku-no-chousho-pc-9801#01-painful-sigh) (PC-9801, YMF262)
+6. [Painful Sigh - Miwaku no Chousho (1995)](https://vgmrips.net/packs/pack/miwaku-no-chousho-nec-pc-9801#01-painful-sigh) (PC-9801, YMF262)
 7. [Sky of the City - Doukyusei 2 (1995)](http://vgmrips.net/packs/pack/doukyusei-2-ibm-pc#03-sky-of-the-city) (DOS, YMF262)
 
 ## YMF278 (OPL4)

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -438,7 +438,7 @@ Channel 3 has two special modes:
 2. [Madbrain - Oskari goes to Soundblasterland (AdlibTracker2)](https://soundcloud.com/madbr/oskari-goes-to)
 3. [Encore - The Abscence of Julia (AdlibTracker2)](http://www.adlibtracker.net/files/encore_-_the_absence_of_julia.mp3)
 4. [Benjamin Gerardin - High Tech Environment III (AdlibTracker2)](http://adlibtracker.net/files/benjamin_gerardin_-_high_tech_environment_iii.mp3)
-5. [naruto - MoonDriver for OPL3 DEMO](https://www.youtube.com/watch?v=a7I-QmrkAak)
+5. [naruto - MoonDriver for OPL3 DEMO](https://soundcloud.com/naruto2413/moondriver-for-opl3-demo-001-004)
 6. [Painful Sigh - Miwaku no Chousho (1995)](http://vgmrips.net/packs/pack/miwaku-no-chousho-pc-9801#01-painful-sigh) (PC-9801, YMF262)
 7. [Sky of the City - Doukyusei 2 (1995)](http://vgmrips.net/packs/pack/doukyusei-2-ibm-pc#03-sky-of-the-city) (DOS, YMF262)
 

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -430,13 +430,17 @@ Channel 3 has two special modes:
 - **Related to**: Yamaha YMF7xx series
 
 ### Notes
-[Documentation](http://www.fit.vutbr.cz/~arnost/opl/opl3.html). Has additional capabilities over OPL2, such as 4 more waveforms, double the channels, and ability to use 4-op instruments. Up to six 4-op instruments can be created, and each take up 2 channels. So that gives you 6 4-op + 6 2-op = 12 at its most extreme. Also, there's a separate mode where you can add drums (similar to OPL2). 6 4-op + 3 2-op + 5 1-op = 14 channels. Many musicians program their own drums in trackers using the full FM mode. TODO: Find out how the drum mode sounds like.
+[Documentation](http://www.fit.vutbr.cz/~arnost/opl/opl3.html). Has additional capabilities over OPL2, such as 4 more waveforms, double the channels, and ability to use 4-op instruments. Up to six 4-op instruments can be created, and each take up 2 channels. So that gives you 6 4-op + 6 2-op = 12 at its most extreme. Also, there's a separate mode where you can add drums (similar to OPL2). 6 4-op + 3 2-op + 5 1-op = 14 channels. Many musicians program their own drums in trackers using the full FM mode.
 
-### Example music (TODO: AdplugTracker2 stuff)
-1. [Painful Sigh - Miwaku no Chousho (1995)](http://vgmrips.net/packs/pack/miwaku-no-chousho-pc-9801#01-painful-sigh) (PC-9801, YMF262)
-2. [Sky of the City - Doukyusei 2 (1995)](http://vgmrips.net/packs/pack/doukyusei-2-ibm-pc#03-sky-of-the-city) (DOS, YMF262)
-3. [Madbrain - Oskari goes to Soundblasterland (AdlibTracker2)](https://soundcloud.com/madbr/oskari-goes-to)
+### Example music
+
+1. [Madbrain - Oskari the Heimfanker (AdlibTracker2)](https://www.youtube.com/watch?v=79cvdJVQ8QQ)
+2. [Madbrain - Oskari goes to Soundblasterland (AdlibTracker2)](https://soundcloud.com/madbr/oskari-goes-to)
+3. [Encore - The Abscence of Julia (AdlibTracker2)](http://www.adlibtracker.net/files/encore_-_the_absence_of_julia.mp3)
 4. [Benjamin Gerardin - High Tech Environment III (AdlibTracker2)](http://adlibtracker.net/files/benjamin_gerardin_-_high_tech_environment_iii.mp3)
+5. [naruto - MoonDriver for OPL3 DEMO](https://www.youtube.com/watch?v=a7I-QmrkAak)
+6. [Painful Sigh - Miwaku no Chousho (1995)](http://vgmrips.net/packs/pack/miwaku-no-chousho-pc-9801#01-painful-sigh) (PC-9801, YMF262)
+7. [Sky of the City - Doukyusei 2 (1995)](http://vgmrips.net/packs/pack/doukyusei-2-ibm-pc#03-sky-of-the-city) (DOS, YMF262)
 
 ## YMF278 (OPL4)
  - **Year of release**: 1994

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -448,6 +448,7 @@ Channel 3 has two special modes:
 
 ### Example music
 - [naruto - encounter the unknown environment (MoonDriver MSX2+ Demo)](https://www.youtube.com/watch?v=HwgHcycYo8o)
+- [Dutch Moonsound Veterans - Full Throttle edition](https://www.youtube.com/watch?v=zqD52xioky4)
 
 # Others
 

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -438,6 +438,17 @@ Channel 3 has two special modes:
 3. [Madbrain - Oskari goes to Soundblasterland (AdlibTracker2)](https://soundcloud.com/madbr/oskari-goes-to)
 4. [Benjamin Gerardin - High Tech Environment III (AdlibTracker2)](http://adlibtracker.net/files/benjamin_gerardin_-_high_tech_environment_iii.mp3)
 
+## YMF278 (OPL4)
+ - **Year of release**: 1994
+ - **FM**: Exactly the same as OPL3
+ - **PCM**: 24 channels of "wavetable synthesis", up to 512 samples, 4 MiB, 16-bit/44.1 kHz
+ - **Used in**: Sunrise MoonSound soundcard for MSX (1995), Yamaha Sound Edge soundcard for IBM PC (1995)
+
+[Datasheet](http://map.grauw.nl/resources/sound/yamaha_opl4.pdf). In short, this adds high quality sample playback to OPL3. It has hardware envelope support for the samples, an onboard CPU, a 2 MiB ROM full of stock samples, hardware LFO for vibrato/tremolo, stereo panning, among other hardware features. The sample capabilities may be somewhat comparable to YMF292 as used in Sega Saturn. It could also be imagined as the .XM format mixed with OPL3 in one sound chip.
+
+### Example music
+- [naruto - encounter the unknown environment (MoonDriver MSX2+ Demo)](https://www.youtube.com/watch?v=HwgHcycYo8o)
+
 # Others
 
 ## YMU757 / YMU757B (MA-1 / MA-1C)

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -464,6 +464,8 @@ MUL=15, TL=63, AR=15, DR=15, SL=15, RR=15, VIB=1, SUS=1, EGT=1, WAV=7, FB=7
 + LFO=3, KSR=1, AM=1, ALG=6, KSL=3, DVB=3, DAM=3
 ```
 
+Note: `DVB` and `DAM` now have 4 depths instead of the 2 from OPL3.
+
 ## YMU762 (MA-3)
 - **Year of release**: 2001
 - **FM**: 32 channels (2-op, 29 waveforms) or 16 channels (4-op, 29 waveforms + 3 external waveform)

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -478,7 +478,7 @@ MUL=15, TL=63, AR=15, DR=15, SL=15, RR=15, VIB=1, SUS=1, EGT=1, WAV=7, FB=7
 + LFO=3, KSR=1, AM=1, ALG=6, KSL=3, DVB=3, DAM=3
 + XOF=1, EAM=1, EVB=1, PANPOT=31, PE=1
 ```
-A bunch of new parameters with no clue what they do, but VIB is gone?
+New parameters do the following: `EAM` (Enable Amplitude Modulation/Tremolo), `EVB` (Enable Vibrato), `XOF` (Ignore key-off for Sustain)
 
 ## YMU765 (MA-5)
 - **Year of release**: 2003

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -501,4 +501,4 @@ Based on the MA-5's FM synthesis engine. Supposedly has 128 polyphony combined F
 - **FM**: 16 channels (4-op, 29 waveforms + 3 external waveform)
 - **Used in**: Home appliances (Chinese market)
 
-This appears to be a version of MA-3. It has no PCM or Analog Lite capabilities. Using 2-op instruments does not give extra channels, thus it's probably best to use 4-op instruments.
+[Datasheet](https://device.yamaha.com/ja/lsi/products/sound_generator/images/4MF825A40.pdf). This appears to be a version of MA-3. It has no PCM or Analog Lite capabilities. Using 2-op instruments does not give extra channels, thus it's probably best to use 4-op instruments.
diff --git a/YamahaFM.md b/YamahaFM.md
@@ -227,7 +227,7 @@ Brandish VT (PC-98), Dragon Slayer: TLoH II (PC-98, OPNA), Sorcerian (PC-88, OPN
 - Most differences are probably firmware-bound. For example DX21 has a "Pitch EG" which DX27/100/FB-01 do not. FB-01 has weird stuff like "AR Velocity Sensitivity". This is all probably specific to the firmware and not the chip. Velocity Sensitivity for example is fully controlled in firmware when processing MIDI.
 
 ## YM2414 (OPZ, FM Operator Type-Z)
-- 1987, used in synths TX81Z, DX11, YS100, YS200, PortaTone PSR-6300 and PSR-80
+- 1987, used in synths TX81Z, DX11, YS100, YS200, PortaTone PSR-6300, PSR-80 and DSR-2000
 - 8 channels (4-op), 8 waveforms, two LFOs
 - combines the 8 algorithms of YM2151/OPM with 8 waveforms, allowing for sophisticated sounds. Interestingly, borrows the waveform concept from OPL series but uses custom list of waveforms.
 
@@ -243,9 +243,11 @@ Brandish VT (PC-98), Dragon Slayer: TLoH II (PC-98, OPNA), Sorcerian (PC-88, OPN
 - hybrid FM/PCM, uses 32 channels (4-op, but configurable). Mostly PCM was used.
 
 ## YMF271 (OPX)
-- 1994?, used in Seibu SPI arcade board
-- **FM**: 9 channels? - 2 operators (4 algorithms), 3 operators (8 algorithms), 4 operators (16 algorithms)
-- **PCM**: 3 channels?
+- 1993, used in Seibu SPI and Mega System 32 arcade boards
+- hybrid FM/PCM, flexible 2/3/4 operators + PCM. Mostly only PCM was used.
+- operators can use a unique set of 7 waveforms plus a custom exernal waveform.
+- **FM**: quite unique and flexible. 48 operators (slots), split into 12 "groups". Each group can be configured with 4 "sync" modes (4op mode, 2op x2 mode, 3op + 1?, PCM) 2. 28 algorithms - 4 (2op), 8 (3op), 16 (4op). example: 12 channels with all 4-op, 24 channels with all 2-op. "up to 30 sounds".
+- **PCM**: depending on configuration, PCM can be used extensively; "up to 12 voices". 
 
 -------
 
@@ -464,7 +466,7 @@ MUL=15, TL=63, AR=15, DR=15, SL=15, RR=15, VIB=1, SUS=1, EGT=1, WAV=7, FB=7
 
 ## YMU762 (MA-3)
 - **Year of release**: 2001
-- **FM**: 32 channels (2-op, 29 waveforms) or 16 channels (4-op, 29 waveforms)
+- **FM**: 32 channels (2-op, 29 waveforms) or 16 channels (4-op, 29 waveforms + 3 external waveform)
 - **PCM/ADPCM**: 8 channels (8-bit PCM, 4-bit ADPCM, 48kHz)
 - **Used in**: Tons of mobile devices (cell phone, PDA)
 
@@ -480,7 +482,7 @@ A bunch of new parameters with no clue what they do, but VIB is gone?
 
 ## YMU765 (MA-5)
 - **Year of release**: 2003
-- **FM**: 32 channels (2-op, 29 waveforms) or 16 channels (4-op, 29 waveforms)
+- **FM**: 32 channels (2-op, 29 waveforms) or 16 channels (4-op, 29 waveforms + 3 external waveform)
 - **PCM/ADPCM**: 32 channels (8-bit PCM, 4-bit ADPCM, 48kHz)
 - **Used in**: Tons of mobile devices (cell phone, PDA)
 
@@ -496,7 +498,7 @@ Based on the MA-5's FM synthesis engine. Supposedly has 128 polyphony combined F
 
 ## YMF825 (SD-1)
 - **Year of release**: 2011
-- **FM**: 16 channels (4-op, 29 waveforms)
+- **FM**: 16 channels (4-op, 29 waveforms + 3 external waveform)
 - **Used in**: Home appliances (Chinese market)
 
 This appears to be a version of MA-3. It has no PCM or Analog Lite capabilities. Using 2-op instruments does not give extra channels, thus it's probably best to use 4-op instruments.
diff --git a/YamahaFM.md b/YamahaFM.md
@@ -443,7 +443,7 @@ Channel 3 has two special modes:
 - **FM**: 4 channels (2-op, 2 waveforms)
 - **Used in**: Tons of mobile devices (cell phone, PDA)
 
-[Datasheet](http://pdf.datasheetcatalog.com/datasheet_pdf/yamaha/YMU757.pdf) #1. [Datasheet](https://cdn.datasheetspdf.com/pdf-down/Y/M/U/YMU757B_YAMAHACORPORATION.pdf) #2. Seems quite limited. 2-op only, but has OPLL's half-sine waveform. Contains a built-in sequencer.
+[Datasheet](http://pdf.datasheetcatalog.com/datasheet_pdf/yamaha/YMU757.pdf) #1. [Datasheet](https://courses.cs.washington.edu/courses/cse466/06sp/labs/l5/Lab5_files/4mu757b30.pdf) #2. Seems quite limited. 2-op only, but has OPLL's half-sine waveform. Contains a built-in sequencer.
 
 ```
 MUL=7, TL=63, AR=15, DR=15, SL=15, RR=15, VIB=1, SUS=1, EGT=1, WAV=1, FB=7

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -443,7 +443,7 @@ Channel 3 has two special modes:
 - **FM**: 4 channels (2-op, 2 waveforms)
 - **Used in**: Tons of mobile devices (cell phone, PDA)
 
-[Datasheet](http://pdf.datasheetcatalog.com/datasheet_pdf/yamaha/YMU757.pdf). Seems quite limited. 2-op only, but has OPLL's half-sine waveform. Contains a built-in sequencer.
+[Datasheet](http://pdf.datasheetcatalog.com/datasheet_pdf/yamaha/YMU757.pdf) #1. [Datasheet](https://cdn.datasheetspdf.com/pdf-down/Y/M/U/YMU757B_YAMAHACORPORATION.pdf) #2. Seems quite limited. 2-op only, but has OPLL's half-sine waveform. Contains a built-in sequencer.
 
 ```
 MUL=7, TL=63, AR=15, DR=15, SL=15, RR=15, VIB=1, SUS=1, EGT=1, WAV=1, FB=7

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -438,7 +438,7 @@ Channel 3 has two special modes:
 
 # Others
 
-## YMU757 / YMU757B (MA-1)
+## YMU757 / YMU757B (MA-1 / MA-1C)
 - **Year of release**: 1999
 - **FM**: 4 channels (2-op, 2 waveforms)
 - **Used in**: Tons of mobile devices (cell phone, PDA)

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -438,7 +438,7 @@ Channel 3 has two special modes:
 
 # Others
 
-## YMU757 (MA-1)
+## YMU757 / YMU757B (MA-1)
 - **Year of release**: 1999
 - **FM**: 4 channels (2-op, 2 waveforms)
 - **Used in**: Tons of mobile devices (cell phone, PDA)
@@ -455,7 +455,7 @@ MUL=7, TL=63, AR=15, DR=15, SL=15, RR=15, VIB=1, SUS=1, EGT=1, WAV=1, FB=7
 - **ADPCM**: 1 channel (4-bit, 4 kHz/8 kHz)
 - **Used in**: Tons of mobile devices (cell phone, PDA)
 
-[Datasheet](#). Boasts much improved FM over MA-1. Appears to have full OPL3 feature set. Contains one very low quality ADPCM channel. Also contains a sequencer. For drum sounds, a single key note can be specified.
+[Datasheet](https://cdn.datasheetspdf.com/pdf-down/Y/M/U/YMU759_ETC.pdf). Boasts much improved FM over MA-1. Appears to have full OPL3 feature set. Contains one very low quality ADPCM channel. Also contains a sequencer. For drum sounds, a single key note can be specified.
 
 ```
 MUL=15, TL=63, AR=15, DR=15, SL=15, RR=15, VIB=1, SUS=1, EGT=1, WAV=7, FB=7
@@ -469,7 +469,7 @@ MUL=15, TL=63, AR=15, DR=15, SL=15, RR=15, VIB=1, SUS=1, EGT=1, WAV=7, FB=7
 - **Used in**: Tons of mobile devices (cell phone, PDA)
 
 
-[Datasheet](#). Improved over MA-2. Much improved sample playback. More channels. More operator waveforms. Two extra 4-op algorithms. plus some tweaks to old ones.
+[Datasheet](https://cdn.datasheetspdf.com/pdf-down/Y/M/U/YMU762_Yamaha.pdf). Improved over MA-2. Much improved sample playback. More channels. More operator waveforms. Two extra 4-op algorithms. plus some tweaks to old ones.
 
 ```
 MUL=15, TL=63, AR=15, DR=15, SL=15, RR=15, VIB=1, SUS=1, EGT=1, WAV=7, FB=7
@@ -484,7 +484,7 @@ A bunch of new parameters with no clue what they do, but VIB is gone?
 - **PCM/ADPCM**: 32 channels (8-bit PCM, 4-bit ADPCM, 48kHz)
 - **Used in**: Tons of mobile devices (cell phone, PDA)
 
-This uses the same FM synthesis engine of MA-3, but adds a filter called Analog Lite (AL) and a speech synthesis (HV/Humanoid Voice) in Japanese or Korean. Also it bumps up the PCM channel count to 32.
+[Datasheet](https://cdn.datasheetspdf.com/pdf-down/Y/M/U/YMU765_Yamaha.pdf). This uses the same FM synthesis engine of MA-3, but adds a filter called Analog Lite (AL) and a speech synthesis (HV/Humanoid Voice) in Japanese or Korean. Also it bumps up the PCM channel count to 32.
 
 ## YMU786 / YMU790 / YMU791 (MA-7/ MA-7D / MA-7I)
 - **Year of release**: 2005

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -375,6 +375,7 @@ Channel 3 has two special modes:
 ### Example music
 1. [Theme of Terracresta - Terra Cresta (1985)](http://vgmrips.net/packs/pack/terra-cresta#terra-cresta-02-theme-of-terracresta) (Arcade, YM3526)
 2. [Wonder Flight - Wonder Planet (1987)](http://vgmrips.net/packs/pack/wonder-planet-karnov#02-wonder-flight) (Arcade, YM3526)
+3. [Vibrants FM - Edlib OPL2 converted tunes](https://www.youtube.com/watch?v=Rh7wKVmw3vs) (C64/SFX Sound Expander, YM3526)
 
 ## YM3812 (OPL2, FM Operator Type-L-2)
 - **Year of release**: 1985

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -221,7 +221,7 @@ Brandish VT (PC-98), Dragon Slayer: TLoH II (PC-98, OPNA), Sorcerian (PC-88, OPN
 - Requires two chips, one for operators and one for envelopes
 
 ## YM2164 (OPP, FM Operator Type P)
-- 1985, Used in DX21, DX27, DX100, FB-01, SFG-05 + Korg DS-8, 707
+- 1985, Used in DX21, DX27, DX100, FB-01, SFG-05, Korg DS-8, Korg 707, IBM Music Feature Card
 - 8 voices (4-op)
 - The supposedly improved successor to OPM. It is VERY similar. Same pinout and is backwards compatible. In fact, any differences may not affect sound.
 - Most differences are probably firmware-bound. For example DX21 has a "Pitch EG" which DX27/100/FB-01 do not. FB-01 has weird stuff like "AR Velocity Sensitivity". This is all probably specific to the firmware and not the chip. Velocity Sensitivity for example is fully controlled in firmware when processing MIDI.

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -198,11 +198,15 @@ Brandish VT (PC-98), Dragon Slayer: TLoH II (PC-98, OPNA), Sorcerian (PC-88, OPN
 
 -->
 
-
-
-## DX7 predecessors: GS1 (1981), CE20 (1982)
-- O.G. Ensemble FM synths with preprogrammed sound banks
-- CE20 uses YM20110 (aka OP) chip, and is 2-op
+## Yamaha GS1 / GS2 (1981)
+- GS1: 8 operators per voice: 4 carriers with one modulator each (crossmodulation between 2 modulators), 88-key velocity and poly-pressure sensitive weighted keyboard
+- GS2: 4 operators per voice: 2 carriers with one modulator each (crossmodulation between 2 modulators), 73-key velocity sensitive weighted keyboard
+- Non-programmable, uses magnetic "voice cards" to load new sounds. Has vibrato, tremolo, ensemble and equalizer controls.
+- 2x OPC (YM34501) "Operator-Carrier", 2x OPM (YM34502) "Operator-Modulator", 4x EC (YM322) "Envelope Controller", 4x PG (YM344) "Phase Generator"
+
+## Yamaha CE20 / CE25 (1982)
+- Uses two 2-op layers per voice (Same as GS2?)
+- 2x OP1/OP2 (YM2011) "Operator", 1x PA (YM2010) "Phase Accumulator"
 
 ## DX7: YM2128(0) (OPS, FM Operator Type-S) and YM2129(0) (EGS)
 - mid 1983, the _original FM synthesizer_, direct predecessor to YM2151/YM2612 etc.

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -232,6 +232,8 @@ Brandish VT (PC-98), Dragon Slayer: TLoH II (PC-98, OPNA), Sorcerian (PC-88, OPN
 - 8 channels (4-op), 8 waveforms, two LFOs
 - Identical to OPZ but has fixed frequencies down to 0 Hz.
 
+-------
+
 ## YMF292 (SCSP)
 - 1994, used in Sega Saturn, Sega Model 2/3
 - hybrid FM/PCM, uses 32 channels (4-op, but configurable). Mostly PCM was used.

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -209,12 +209,12 @@ Brandish VT (PC-98), Dragon Slayer: TLoH II (PC-98, OPNA), Sorcerian (PC-88, OPN
 - 16 voices (6-op) (32 in DX1/DX5)
 - Used in DX7, DX9 (firmware reduces it to 4-op, 8 algo), TX7, DX1/DX5 (Dual)
 - DX9 defines algorithms 1-8 as 1,14,8,7,5,22,31,32 (with removed OP 1 and 2). These algorithms are shared in OPN/OPM/OPZ series.
-- Requires two chips
+- Requires two chips, one for operators and one for envelopes
 
 ## YM2604 (OPS2) and YM3609 (EGM)
 - 1986, Used in DX7 mark II, TX802
 - 16 voices (6-op)
-- Requires two chips
+- Requires two chips, one for operators and one for envelopes
 
 ## YM2164 (OPP, FM Operator Type P)
 - 1985, Used in DX21, DX27, DX100, FB-01, SFG-05 + Korg DS-8, 707

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -202,7 +202,7 @@ Brandish VT (PC-98), Dragon Slayer: TLoH II (PC-98, OPNA), Sorcerian (PC-88, OPN
 
 ## DX7 predecessors: GS1 (1981), CE20 (1982)
 - O.G. Ensemble FM synths with preprogrammed sound banks
-- YM20110 (aka OP) (used in CE2) was 2-op
+- CE20 uses YM20110 (aka OP) chip, and is 2-op
 
 ## DX7: YM2128(0) (OPS, FM Operator Type-S) and YM2129(0) (EGS)
 - mid 1983, the _original FM synthesizer_, direct predecessor to YM2151/YM2612 etc.

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -223,7 +223,7 @@ Brandish VT (PC-98), Dragon Slayer: TLoH II (PC-98, OPNA), Sorcerian (PC-88, OPN
 - Most differences are probably firmware-bound. For example DX21 has a "Pitch EG" which DX27/100/FB-01 do not. FB-01 has weird stuff like "AR Velocity Sensitivity". This is all probably specific to the firmware and not the chip. Velocity Sensitivity for example is fully controlled in firmware when processing MIDI.
 
 ## YM2414 (OPZ, FM Operator Type-Z)
-- 1987, used in synths TX81Z, DX11, YS100, YS200
+- 1987, used in synths TX81Z, DX11, YS100, YS200, PortaTone PSR-6300 and PSR-80
 - 8 channels (4-op), 8 waveforms, two LFOs
 - combines the 8 algorithms of YM2151/OPM with 8 waveforms, allowing for sophisticated sounds. Interestingly, borrows the waveform concept from OPL series but uses custom list of waveforms.
 

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -223,10 +223,15 @@ Brandish VT (PC-98), Dragon Slayer: TLoH II (PC-98, OPNA), Sorcerian (PC-88, OPN
 - Most differences are probably firmware-bound. For example DX21 has a "Pitch EG" which DX27/100/FB-01 do not. FB-01 has weird stuff like "AR Velocity Sensitivity". This is all probably specific to the firmware and not the chip. Velocity Sensitivity for example is fully controlled in firmware when processing MIDI.
 
 ## YM2414 (OPZ, FM Operator Type-Z)
-- 1987, used in synths TX81Z, DX11, V50, YS100, YS200
+- 1987, used in synths TX81Z, DX11, YS100, YS200
 - 8 channels (4-op), 8 waveforms, two LFOs
 - combines the 8 algorithms of YM2151/OPM with 8 waveforms, allowing for sophisticated sounds. Interestingly, borrows the waveform concept from OPL series but uses custom list of waveforms.
 
+## YM2424 (OPZII, FM Operator Type-Z-II)
+- 1989, only known to be used in V50 (uses 2xYM2424 for 16 note polyphony)
+- 8 channels (4-op), 8 waveforms, two LFOs
+- Identical to OPZ but has fixed frequencies down to 0 Hz.
+
 ## YMF292 (SCSP)
 - 1994, used in Sega Saturn, Sega Model 2/3
 - hybrid FM/PCM, uses 32 channels (4-op, but configurable). Mostly PCM was used.

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -378,9 +378,9 @@ Channel 3 has two special modes:
 1. [Staff Roll - Street Smart (1989)](http://vgmrips.net/packs/pack/street-smart-snk-68000#13-staff-roll) (Arcade, YM3812)
 2.  [Title - Harald Hårdtand i 'Kampen om de rene tænder' (1992)](http://vgmrips.net/packs/pack/harald-hardtand-i-kampen-om-de-rene-taender-ibm-pc-at#01-title-music) (DOS, YM3812)
 3.  [Title - Fury of the Furries (1993)](http://vgmrips.net/packs/pack/fury-of-the-furries#02-title-screen) (DOS, YM3812)
-4. [Field 1 - Knights of Xentar (1994)](http://vgmrips.net/packs/pack/knights-of-xentar-ibm-pc-at#14-field-1) (DOS, YM3812)
-5. [Battle - Princess Maker 2 (1996)](http://vgmrips.net/packs/pack/princess-maker-2-pc#17-battle) (DOS, YM3812)
-6. [Title Tune - Lollypop (1994)](http://chordian.net/files/music/adlib/lollypop/Lollypop_Title_Tune.mp3) (DOS, YM3812, Edlib)
+4. [Title Tune - Lollypop (1994)](http://chordian.net/files/music/adlib/lollypop/Lollypop_Title_Tune.mp3) (DOS, YM3812, Edlib)
+5. [Field 1 - Knights of Xentar (1994)](http://vgmrips.net/packs/pack/knights-of-xentar-ibm-pc-at#14-field-1) (DOS, YM3812)
+6. [Battle - Princess Maker 2 (1996)](http://vgmrips.net/packs/pack/princess-maker-2-pc#17-battle) (DOS, YM3812)
 7. [Vibrants - Fis3 (Edlib)](https://www.youtube.com/watch?v=AUP12tOJHmw)
 8. [DRAX - Street Wise (Edlib)](http://chordian.net/files/music/adlib/drax/Street_Wise.mp3)
 9. [DRAX - Flash (Edlib)](http://chordian.net/files/music/adlib/drax/Flash_2.mp3)

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -368,7 +368,7 @@ Channel 3 has two special modes:
 ## YM3812 (OPL2, FM Operator Type-L-2)
 - **Year of release**: 1985
 - **FM**: 9 channels (2-op, 4 waveforms)
-- **Used in**: Arcade, DOS sound cards (Adlib, Sound Blaster etc.)
+- **Used in**: Arcade, DOS sound cards (Adlib, Sound Blaster etc.), Yamaha keyboards
 - **Related to**: N/A
 
 ### Notes
@@ -418,7 +418,7 @@ Channel 3 has two special modes:
 ### Notes
 [Documentation](http://www.fit.vutbr.cz/~arnost/opl/opl3.html). Has additional capabilities over OPL2, such as 4 more waveforms, double the channels, and ability to use 4-op instruments. Up to six 4-op instruments can be created, and each take up 2 channels. So that gives you 6 4-op + 6 2-op = 12 at its most extreme. Also, there's a separate mode where you can add drums (similar to OPL2). 6 4-op + 3 2-op + 5 1-op = 14 channels. Many musicians program their own drums in trackers using the full FM mode. TODO: Find out how the drum mode sounds like.
 
-### Example music (TODO: get an a2m player/AdPlug? for AdlibTracker and find good shit)
+### Example music (TODO: AdplugTracker2 stuff)
 1. [Painful Sigh - Miwaku no Chousho (1995)](http://vgmrips.net/packs/pack/miwaku-no-chousho-pc-9801#01-painful-sigh) (PC-9801, YMF262)
 2. [Sky of the City - Doukyusei 2 (1995)](http://vgmrips.net/packs/pack/doukyusei-2-ibm-pc#03-sky-of-the-city) (DOS, YMF262)
 3. [Madbrain - Oskari goes to Soundblasterland (AdlibTracker2)](https://soundcloud.com/madbr/oskari-goes-to)

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -396,18 +396,17 @@ Channel 3 has two special modes:
 ## YM2413 (OPLL, FM Operator Type-L-L)
 - **Year of release**: 1986
 - **FM**: 9 channels or 6 channels/5 drums (2-op, 2 waveforms)
-- **Used in**: Arcade, DOS sound cards (Adlib, Sound Blaster etc.)
+- **Used in**: Arcade, Yamaha PSS-140/PSS-270
 - **Related to**: JP Master System, MSX/MSX2, VRC7 (6 channel variant used in _one_ NES game: Lagrange Point) (1986-1988)
 
 ### Notes
 <s>Datasheet</s>. Only one channel can be fully programmed. Other must be chose from 15 hard-coded instruments. There are chip variants with different instrument sets, such as **YMF281** and **YM2423**. In general, these are inferior, stripped-down versions of OPL2. TODO: Is there anything programmable? Vibrato and volume? stuff like that.
 
 ### Example music
-1. [Opening Theme - GD: Greatest Driver (1988)](http://vgmrips.net/packs/pack/gd-greatest-driver-msx2-opll#01-opening-theme) (MSX2, YM2413)
-2. [Ending - Fire Hawk (1989)](http://vgmrips.net/packs/pack/fire-hawk-thexder-the-second-contact-msx2-opll#24-ending) (MSX2, YM2413 + AY-3-8910)
-3. [Out of Rap - F-1 Spirit 3D Special (1990)](http://vgmrips.net/packs/pack/f-1-spirit-3d-special-msx2-msx-music#05-out-of-rap) (MSX2+, MSX-Music/YM2413)
-4. [Theme of Isis - Lagrange Point (1991)](http://vgmrips.net/packs/pack/lagrange-point-family-computer#01-theme-of-isis) (Famicom, VRC7/NES APU)
-
+1. [Out of Rap - F-1 Spirit 3D Special (1990)](http://vgmrips.net/packs/pack/f-1-spirit-3d-special-msx2-msx-music#05-out-of-rap) (MSX2+, MSX-Music/YM2413)
+2. [Opening Theme - GD: Greatest Driver (1988)](http://vgmrips.net/packs/pack/gd-greatest-driver-msx2-opll#01-opening-theme) (MSX2, YM2413)
+3. [Theme of Isis - Lagrange Point (1991)](http://vgmrips.net/packs/pack/lagrange-point-family-computer#01-theme-of-isis) (Famicom, VRC7/NES APU)
+4. [Ending - Fire Hawk (1989)](http://vgmrips.net/packs/pack/fire-hawk-thexder-the-second-contact-msx2-opll#24-ending) (MSX2, YM2413 + AY-3-8910)
 
 
 ## YMF262 (OPL3, FM Operator Type-L-3)
@@ -422,7 +421,8 @@ Channel 3 has two special modes:
 ### Example music (TODO: get an a2m player/AdPlug? for AdlibTracker and find good shit)
 1. [Painful Sigh - Miwaku no Chousho (1995)](http://vgmrips.net/packs/pack/miwaku-no-chousho-pc-9801#01-painful-sigh) (PC-9801, YMF262)
 2. [Sky of the City - Doukyusei 2 (1995)](http://vgmrips.net/packs/pack/doukyusei-2-ibm-pc#03-sky-of-the-city) (DOS, YMF262)
-3. [Madbrain - Oskari goes to Soundblasterland](https://soundcloud.com/madbr/oskari-goes-to)
+3. [Madbrain - Oskari goes to Soundblasterland (AdlibTracker2)](https://soundcloud.com/madbr/oskari-goes-to)
+4. [Benjamin Gerardin - High Tech Environment III (AdlibTracker2)](http://adlibtracker.net/files/benjamin_gerardin_-_high_tech_environment_iii.mp3)
 
 # Others
 

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -144,6 +144,8 @@ KSL=[11000000] (KS) (Key Scale Level)
 <!-- https://www.vogons.org/viewtopic.php?f=5&t=19264&sid=ce4e97fc6c0481566a3ef0e915af81ab -->
 
 <!--
+sega genesis
+----------
 shinobi iii
 revenge of shinobi
 castlevania bloodlines
@@ -186,13 +188,18 @@ Rhyme Star (PC-98), Brandish 3 (PC-98), Rouge: Manatsu no Kuchibeni (PC-88), Esc
 Only You (PC-98), Harlem Blade (PC-98), Otome Senki (PC-98, OPNA), Popful Mail (PC-98), Revival Xanadu (PC-98), Starfire (PC-98), Rance 4.1: OKwS!!/Rance 4.2: AG (PC-98, OPNA), Misty Blue (PC-88, OPNA), Tsunyan Jaayao, Star Cruiser (PC-88), 
 
 Brandish VT (PC-98), Dragon Slayer: TLoH II (PC-98, OPNA), Sorcerian (PC-88, OPNA), Legend of Heroes IV (PC-98, OPNA), Eiyuu Densetsu III: SM/Legend of Heroes III: WW, Metajo: Furitsu Metatoporoji Daigaku Fuzoku Joshi-kou (PC-98)?, Metajo (PC-98), Touhou Kaikidan: Mystic Square?, Yuugiri: Ningyoushi no Isan (PC-98), Steam-Heart's (PC-98, OPNA)
--->
+
+
 ## Table of contents
 
 * DX7 pre
 
 
 
+-->
+
+
+
 ## DX7 predecessors: GS1 (1981), CE20 (1982)
 - O.G. Ensemble FM synths with preprogrammed sound banks
 - YM20110 (aka OP) (used in CE2) was 2-op
@@ -247,11 +254,12 @@ The chip is possibly stereo. Channel 3 mode is absent.
 1. [BGM - Enduro Racer (1985)](http://vgmrips.net/packs/pack/enduro-racer#enduro-racer-02-bgm) (Arcade, YM2151, SegaPCM)
 2. [Passing Breeze - Out Run (1986)](http://vgmrips.net/packs/pack/out-run-arcade#02-passing-breeze) (Arcade, YM2151, SegaPCM)
 3. [The Heat Waves - Super Monaco GP (1989)](http://vgmrips.net/packs/pack/super-monaco-gp#super-monaco-gp-07-the-heat-waves) (Arcade, YM2151, SegaPCM)
-4. [Time Attack - GP Rider (1990)](http://vgmrips.net/packs/pack/gp-rider-sega-x#04-time-attack-automatic) (Arcade, YM2151, SegaPCM)
-5. [Red-Hot Desert - R-Type Leo (1992)](http://vgmrips.net/packs/pack/r-type-leo-irem-m92#04-red-hot-desert-area-2) (Arcade, YM2151, GA20)
-6. [Photonic - Room Service](https://archive.org/details/Osc63VOPM/2photonic-RoomService.mp3#) (VOPM VST)
-7. [pedalsteeldrummer - Strawberries and Cream](https://archive.org/details/Osc63VOPM/8pedalsteeldrummer-StrawberriesAndCream.mp3#)  (VOPM VST)
-8. [Keishi Yonao - Eusion](https://www.youtube.com/watch?v=wK60QFPhHOA)  (iYM2151 Demo song, composer of Yu-No)
+4. [Ending - "Last Drive" - Knight Arms: The Hyblid Framer](https://vgmrips.net/packs/pack/knight-arms-the-hyblid-framer-sharp-x68000#16-ending-last-drive) (X68000, YM2151, OKIM6258)
+5. [Time Attack - GP Rider (1990)](http://vgmrips.net/packs/pack/gp-rider-sega-x#04-time-attack-automatic) (Arcade, YM2151, SegaPCM)
+6. [Red-Hot Desert - R-Type Leo (1992)](http://vgmrips.net/packs/pack/r-type-leo-irem-m92#04-red-hot-desert-area-2) (Arcade, YM2151, GA20)
+7. [Photonic - Room Service](https://archive.org/details/Osc63VOPM/2photonic-RoomService.mp3#) (VOPM VST)
+8. [pedalsteeldrummer - Strawberries and Cream](https://archive.org/details/Osc63VOPM/8pedalsteeldrummer-StrawberriesAndCream.mp3#)  (VOPM VST)
+9. [Keishi Yonao - Eusion](https://www.youtube.com/watch?v=wK60QFPhHOA)  (iYM2151 Demo song, composer of Yu-No)
 
 -------
 # OPN

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -397,7 +397,9 @@ Channel 3 has two special modes:
 ### Example music
 1. [Opening Theme - GD: Greatest Driver (1988)](http://vgmrips.net/packs/pack/gd-greatest-driver-msx2-opll#01-opening-theme) (MSX2, YM2413)
 2. [Ending - Fire Hawk (1989)](http://vgmrips.net/packs/pack/fire-hawk-thexder-the-second-contact-msx2-opll#24-ending) (MSX2, YM2413 + AY-3-8910)
-3. [Theme of Isis - Lagrange Point (1991)](http://vgmrips.net/packs/pack/lagrange-point-family-computer#01-theme-of-isis) (Famicom, VRC7/NES APU)
+3. [Out of Rap - F-1 Spirit 3D Special (1990)](http://vgmrips.net/packs/pack/f-1-spirit-3d-special-msx2-msx-music#05-out-of-rap) (MSX2+, MSX-Music/YM2413)
+4. [Theme of Isis - Lagrange Point (1991)](http://vgmrips.net/packs/pack/lagrange-point-family-computer#01-theme-of-isis) (Famicom, VRC7/NES APU)
+
 
 
 ## YMF262 (OPL3, FM Operator Type-L-3)

diff --git a/YamahaFM.md b/YamahaFM.md
@@ -373,17 +373,17 @@ Channel 3 has two special modes:
 4. [Field 1 - Knights of Xentar (1994)](http://vgmrips.net/packs/pack/knights-of-xentar-ibm-pc-at#14-field-1) (DOS, YM3812)
 5. [Battle - Princess Maker 2 (1996)](http://vgmrips.net/packs/pack/princess-maker-2-pc#17-battle) (DOS, YM3812)
 6. [Title Tune - Lollypop (1994)](http://chordian.net/files/music/adlib/lollypop/Lollypop_Title_Tune.mp3) (DOS, YM3812, Edlib)
-7. [Vibrants - Fis3 (Edlib)](https://www.youtube.com/watch?v=AUP12tOJHmw) (Edlib)
-8. [DRAX - Street Wise (Edlib)](http://chordian.net/files/music/adlib/drax/Street_Wise.mp3) (Edlib)
-9. [DRAX - Flash (Edlib)](http://chordian.net/files/music/adlib/drax/Flash_2.mp3) (Edlib)
-10. [DRAX - Human Nature 1 (Edlib)](http://chordian.net/files/music/adlib/drax/Human_Nature_1.mp3) (Edlib)
-11. [DRAX - Beyond Minds (Edlib)](http://chordian.net/files/music/adlib/drax/work/Beyond_Minds.mp3) (Edlib)
-12. [METAL - Soul Shock (Edlib)](http://chordian.net/files/music/adlib/metal/Soul_Shock.mp3)  (Edlib)
-13. [METAL - Plastic Session (Edlib)](http://chordian.net/files/music/adlib/metal/Plastic_Session.mp3) (Edlib)
-14. [METAL - Introism (Edlib)](http://chordian.net/files/music/adlib/metal/Introism.mp3) (Edlib)
-15. [METAL - Inside the Organ (Edlib)](http://chordian.net/files/music/adlib/metal/Inside_The_Organ.mp3) (Edlib)
-16. [METAL&DRAX - Breaking Wind (Edlib)](http://chordian.net/files/music/adlib/metal/Breaking_Wind.mp3) (Edlib)
-17. [JO - Drums Are Hard To Do (Edlib)](http://chordian.net/files/music/adlib/jo/Drums_Are_Hard_To_Do.mp3) (Edlib)
+7. [Vibrants - Fis3 (Edlib)](https://www.youtube.com/watch?v=AUP12tOJHmw)
+8. [DRAX - Street Wise (Edlib)](http://chordian.net/files/music/adlib/drax/Street_Wise.mp3)
+9. [DRAX - Flash (Edlib)](http://chordian.net/files/music/adlib/drax/Flash_2.mp3)
+10. [DRAX - Human Nature 1 (Edlib)](http://chordian.net/files/music/adlib/drax/Human_Nature_1.mp3)
+11. [DRAX - Beyond Minds (Edlib)](http://chordian.net/files/music/adlib/drax/work/Beyond_Minds.mp3)
+12. [METAL - Soul Shock (Edlib)](http://chordian.net/files/music/adlib/metal/Soul_Shock.mp3)
+13. [METAL - Plastic Session (Edlib)](http://chordian.net/files/music/adlib/metal/Plastic_Session.mp3)
+14. [METAL - Introism (Edlib)](http://chordian.net/files/music/adlib/metal/Introism.mp3)
+15. [METAL - Inside the Organ (Edlib)](http://chordian.net/files/music/adlib/metal/Inside_The_Organ.mp3)
+16. [METAL&DRAX - Breaking Wind (Edlib)](http://chordian.net/files/music/adlib/metal/Breaking_Wind.mp3)
+17. [JO - Drums Are Hard To Do (Edlib)](http://chordian.net/files/music/adlib/jo/Drums_Are_Hard_To_Do.mp3)
 
 ## YM2413 (OPLL, FM Operator Type-L-L)
 - **Year of release**: 1986