Before we get to the chips,
here are a few things I'd be happy if you could help me with:
Maybe you have the card or have downloaded a card image of Roland FANXRUP1 or FANXUP1
that was once floating around the web? If you have the card but don't
know how to create an exact backup of it, I'll help you with it - it's
easy. I've also kludged up an aternative upgrader v1→v2 package a very
long time ago, however it, while fully works, after starting up still
gets caught in some little trick that needs to be found out and fixed.
To fix it and make proper upgrader for everyone, I need someone that is
handy with SH3/7706 (HD6417706) disasembles and reverse engineering.
I've extracted and decompressed everything necessary and see the guilty
spot that needs to be patched, however I (at least currently) don't do
SH3.
Also, I'm looking for Yamaha PSR-2700 demo diskette contents that likely have been archived somewhere.
Maybe someone has a Yamaha PCS-30 (or PC-50, PCS-500, PC-1000) service manual and/or schematics
for it? Since I've made way over two hundred Playcards available to you
(and also tested absolutely all my binaries as well!), working out the
hardware and firmware of this thing is important, since this one,
instead of a custom playcard sequence playback chip, uses a stock Z80!
I'm looking for an Alesis WEDGE rom dump, Alesis XT:C rom dump and also Alesis XT-Reverb rom dump, Here's a MidiVerb dump for you in exchange. In fact, you can find tons of my dumped roms on this great webpage.
How come noone seems to have dumped Roland DDR-30 waverom?
I'm tempted to buy Bought one just to make dumps
(for all of you, btw!), but I already have a hundred more other synths
to desolder and dump in queue, so probably won't go for it. If you have
one - dump all the roms and let me know! It just should will be put on this great website. (already bought it and dumped program and all wave roms)
Any of the ART MultiVerb, ProVerb or similar reverbs/effect rom dumps are also of interest for me, for example I'm looking for ART Proverb 200 - here's an ART Multiverb LT dump for you in exchange.
Judging by the immense popularity of PSS-51 in eastern europe, asia and
amongst russians, it is quite hard to believe that no one have dumped
its roms. Maybe you have dumps of Yamaha PSS-51
program, abc and/or waveroms? Or maybe you know one for local pickup
somewhere within Baltic states? Well, just bought and dumped it, and extracted samples, demos and styles. Also I've previously made dumps of rather
similar PSS-795 and PSS-595.
It seems there that earliest version (A00) of the Yamaha FB01
firmware rom is somewhat rare, and I esimate, based on the units that I
have, that at most 10%-20% of the units in the wild do have it. All
usual ones have the most-likely-final C00, that I have desoldered,
dumped and shared in the long-ago ancient times. However, for the sake
of history and disassembly fun, having A00 dumped is a must as well,
though I don't realy have too much of spare time to desolder and dump
it, especially since maybe someone has already dumped this version
(given the popularity and abundance of these modules). So if you have
it, let me know. At some point I might desolder it and dump it, if it
turns out to be realy rare, but I'd better spend that time desoldering
and dumping something else.
Also, for the curious, initial hardware version (with A00 rom) only
differs with (besides missing ground wire from the pcb inside) that it
does not have a metal sub-chasis under the pcb, so you can tell that
from the outside by looking from the bottom: early ones have two holes,
but no screws in them, and instead has white plastic pegs in other
holes right besides front panel. Serial numbers for the A00 version
seem to be below 02000, while 07000 and up definitely has version C00.
No idea about if there was a B00 version in betwen 02000 and 07000.
(I will likely make a separate article on FB-01 at some point)
In regards to multieffect pedals - maybe you have a rom dump of Roland/BOSS GT-10B? There in this great webpage you can find my GT-3,5,6,8 dumps.
And maybe someone has already desoldered and dumped PSR-6000 waveroms?
Those are three pieces of DIP42 chips, each 2Mbyte (besides two more chips with styles and
then two DIP40 with program and demo songs). I am somewhat tempted to
grab one from the local trash market to do this, yet not sure if I
realy have to. And I don't have a clue when I could actually get to
desoldering it, even if I' ll grab one now. Still GEW9 stuff seems
rather interesting and not that common to come by in the keyboards.
Thanks, I now got the floppy files from Casio WK-1800 Accessory Disk (demo disk that came with it).
I will eventually make a page about this idea and what has been done
(if anything), but for now this text blob is just to keep the following
from the old post for those who are interested: You might like the main
reason I'm lookig for it - it is clearly a fun attack vector
to non-destructively dump its maskrom (in Hitachi H8) since it actually
allows to execute arbitrary code! While dumping can be done even by
blinking a led chdk-style, in this case there's already initialized and
working uart for that. Furthermore, if all is well, waveroms (8Mbyte total)
can also be dumped this way, since H8 can quickly access them, and
procedure to do this for studying will be in the maskrom. On the other
hand, I'll very likely at some point just desolder and dump waveroms
anyways - but it could be more epic to dump it via diskette and midi.
In regards to spare parts and hardware things that I'm missing, maybe you have this:
* Display from early 2000s - Kyocera KCG057QV1DB-G00 found in old Fantom-X keyboards (Roland part code: 03560889 "DISPLAY UNIT LCD KCG057QV1DB-G00").
If you do, please email me!
Yamaha Chips
This is an attempt to create the most extensive Yamaha
synth chip list ever. Includes hard/impossibe to find
pinouts, too.
Information, that I add here, is mostly checked/confirmed/found out by myself, unless sometimes otherwise noted.
 |
|
Currently under construction. I am going to fill up the cells, add pinouts, missing entries and lists gradually, whenever I will find some spare time for doing it.
Распайка, распиновка, データシート
By the way, I do not sell these chips. This table is for a rather comprehensive reference of what can be found in most of yamaha synthesizers - so it's easier to find some documentation on similar innards for an instrument, that has otherwise no documentation avalable.
This reference table also allows to quite precisely assess the character and quality of the sound for a particular keyboard, by knowing the sound of other similar ones. Common DSP/FM source produces rather similar sound on any sythesizer based around the same chip, or at least have similar certain aspects, particular character or oddities of the sound.
Intuitively, initial meanings of certain tone generator dsp designations might have been a litle different than the ones given in the documentation:
SWL - Standard Wave Low-cost or Lite (and there's even lowcost-ier thing than these ones, called SWLL)
SWX - Standard Wave XG-ish (medium-grade stuff with at least 32 voice poly, filters and effects)
SWP - Standard Wave Professional (almost all can sound truly great, though there is also a low-cost cut down L-versions that does not)
YM series
| IC name |
Yamaha's alias |
Yamahas official short description |
My notes |
Used in (synths) |
| YM001 |
Their first chip is just a clone of LM3211 |
YC-45D |
||
| YM248 00 |
SSK |
Keyscanner, converting into CV and TRIG |
CS-30 |
|
| YM254 (pinout) |
Reference frequency divider, typical thing in electronic organs. Generates reference (high) frequencies for every semitone from one high frequency oscillator. | D-30, YC-45D | ||
| YM311 |
KC |
"Key Coder" |
||
| YM312 |
CP |
"Channel Processor" |
||
| YM316 |
ACC |
"Accumulator" |
||
| YM318 |
MPX |
"Multiplexer" |
||
| YM320 |
IG |
"Initial touch Generator" |
||
| YM321 |
EG |
"Envelope Generator" |
||
| YM322 |
EC |
"Envelope Controller" |
||
| YM327 |
ADD |
"Adder" |
||
| YM334 |
AG |
"Aftertouch Generator" |
||
| YM344 |
PG |
"Phase Generator" |
||
| YM347 |
VRG |
"Voice Register" |
||
| YM348 00 |
BBD |
Electone B-55N | ||
| YM351 00 (pinout) |
"Low Noise 512 Stage BBD" |
Classic BBD delay line for chorus. |
MR-500, FS-50, FS-70, FS-300, FS-500 |
|
| YM351 00B |
FS-50, FS-70 |
|||
| YM601 00 |
KAS |
"Key Assigner" |
Electone B-55N, C-55N, C-200 |
|
| YM603 00 |
ROM II |
"Auto Rhythm, Auto Bass Chord" |
Weird special rom with drum trigger outputs. |
C-200 |
| YM604 | "Digital Tone Generator I" |
Electone A-55N, B-55N | ||
| YM605 00 |
DTGII |
"Tone Generator II" |
Electone C-55N, C-200 |
|
| YM606 00 | DTG III |
"Tone Generator III" |
C-200 |
|
| YM607 00 |
DTG IV | "Tone Generator IV" | Electone B-55N, C-55N, C-200 |
|
| YM608 00 (pinout) |
SEC |
"Symphonic Chorus Clock Generator" "String Ensemble Clock Generator" |
C-55N, FS-50, FS-70, FS-300, FS-500 |
|
| YM614 00 |
DTG III | "Tone Generator III" | Same name as the YM606 00. |
Electone C-55N |
| YM621 00 |
KAC |
"Key Assigner C" |
Electone D-700, D-800 | |
| YM624 00 |
SCA |
Electone D-800 | ||
| YM626 | DVG |
"Delay Vibrato Generator" |
Electone A-55N, B-55N, C-55N, D-700, D-800 | |
| YM627 |
PSC |
Electone D-700, D-800 | ||
| YM630 |
RGC I |
Electone D-700, D-800 | ||
| YM631 |
RGC II |
Electone D-700, D-800 | ||
| YM632 |
RGC III |
Electone D-700, D-800 | ||
| YM633 00 |
SEC-II |
"Symphonic Ensemble Controller" "Symphonic Ensemble Clock Generator 2" |
BBD/CCD delay line chip control generator |
Electone B-55N, MR-500 |
| YM634 | ROM V | "Rhythm Generator" | Electone A-55N, B-55N | |
| YM635 00 |
ROM VI |
"Rhythm Generator" |
Some logic with rom that directly triggers drums accordingly to a selected pattern. |
Electone C-55N |
| YM636 |
CPA |
"Key Assigner Channel Prossesor" (sic) |
CP-35 |
|
| YM705 |
GSC |
Electone D-700, D-800 | ||
| YM706 |
GAP |
"Arpeggio and Pedal Generator" |
Electone D-700, D-800 | |
| YM707 |
GVE |
Electone D-800 | ||
| YM708 |
VCS |
Electone D-700, D-800 | ||
| YM709 |
VCC |
Electone D-700, D-800 | ||
| YM710 |
VCP |
"Pedal Voice Control" |
Electone D-700, D-800 | |
| YM711 |
VCM |
Electone D-800 | ||
| YM722 |
CPB |
"Wave Source" |
CP-35 |
|
| YM801 |
WG I |
"Wave Generator I" |
One of those beautifuly scary vintage ceramic chips with 82 pins. | Electone D-700 |
| YM802 |
WG II |
"Wave Generator II" | One of those beautifuly scary vintage ceramic chips with 82 pins. |
Electone D-800 |
| YM806 (pinout) |
OPA |
"Operator" also "OPE-OPRC" |
Functions as OPE or OPRC (ensemble or rhythm) based on control data. |
FS-50, FS-70, FS-300, FS-500, FX-10, FX-20 |
| YM1001 | KAR |
"Key Assigner & Rhythm" | PS-20, ?PS-30 | |
| YM10010 |
KAR |
"Key Assigner & Rhythm" |
DIP40 |
CN-70 |
| YM1002 |
PSC II |
"Parallel - Serial Converter" | DIP16 (likely the same as below) |
CP-11, PS-20, PS-30 |
| YM10020 |
PSC |
"Parallel Serial Converter" |
DIP16 weird thing with negative logic and 1-bit serial streams. 1970-ties style emitter-coupled logic (ECL) |
CN-70 |
| YM1008 |
GH1 |
"Generator, Handy Sound-1" |
HS-200 |
|
| YM1011 |
KAR |
"Key Assigner & Rhythm" | DIP40 |
CP-11, ?PS-30 |
| YM10150 | DTG | "Key Coder Tone Generator" | CS-01 | |
| YM10180 | GH2 | "Generator, Handy Sound-2" | HS-500 | |
| YM1019 (pinout) | GE4 |
"Digital Tone Generator - 4" |
Wave generator / synthesizer |
MP-1, PC-50, PC-100, PS-400 |
| YM1020 |
IE |
"Intelligence Electone" |
PlayCard processor |
PC-50, PC-100 |
| YM1032 |
KAP |
Keyboard control processor, on these eary models called "Key Assigner" |
PC-50, PC-100 |
|
| YM1034 (pinout) | KAP2 | Keyboard control processor, on these eary models called "Key Assigner" | MP-1, PS-400 | |
| YM1035 (pinout) |
SECIII |
"Symphonic Ensemble Clock Generator-III" also "Tremolo Clock Generator III" |
FS-50, FS-70, FS-300, FS-500, FX-10, FX-20 | |
| YM1038 | MIE? |
PC-50 | ||
| YM1101 |
DOM |
"Digital Tone Generator" | DIP40 |
CP-11, PS-20, PS-30 |
| YM11010 |
DOM |
"Digital Tone Generator" |
CN-70 |
|
| YM1102 |
DIP24 |
PS-20, PS-30 | ||
| YM1104 (pinout) (CerDIP beauty) |
GE2 |
"GE II (Generator 2)" | Somewhat self sufficient simple preset 8-voice keyboard chip with a few automatic accompaniment variations in beautiful ceramic DIP48, that needs external switchable timbre filters for tones (similarly to transistor organs, for example). Also typical to transistor organs is the way how vibrato applied - just by detuning the master clock (which gives it the extremely cheesy cheap vibe since it applies to all voices, including accompaniment). | PS-2, PS-3, PS-10 |
| YM1105 (pinout) |
GE1 |
Generator 1 |
Simplified version of GE2 missing auto-accompaniment logic. |
PS-1 |
| YM1823 YM1823B Sharp MS1823B (OPLL YM2413 datasheet) (use in Philips PMC-100) |
Rather
simple 2-op FM soundchip
with preset tones (built-in instrument rom) in DIP18, apparently very
similar to OPLL/OPLL-X (YM2413/23) or even exactly the same besides some register
and/or rom differences. Pinout matches OPLL exactly, as well as having six
voices (not counting rhythm)
according to philips service manual. Also the part name YM1823 is in
that service manual, along with another MS1823 designation - YM might
be errorneous since there seem to be no other YM18xx, but I included it
here anyways. (for now) |
Philips PMC-100 |
||
| YM2003 |
OP2 |
"Operator" |
8-voice 2-operator synth chip for digital pianos of the time (~1984) |
FP-15, YP-40 |
| YM2005 |
KAS |
"Key Assigner" |
FP-15, YP-40 |
|
| YM2021 (iT202100) YM20210 |
KAP3 |
"Key Coder & Assigner for PS" |
Keyboard control processor, on these eary models called "Key Assigner" | PS-25, PS-35, PS-55, CN-1000 |
| YM2022 (iT202200) |
GE5 |
"Generator" |
Interesting
9-voice PCM wavetable synthesizer. Uses external (up to) 4kbyte ROM
with tiny sample loops and instrument parameters: each tone record is
64 bytes long and contains 32 wave points (8-bit signed) that get
unfolded (reverse&invert) into 64; the rest of the record are
parameters. Requires external DAC through custom serial bus. |
PS-25, PS-35, PS-55, CN-1000 |
| YM2023 (iT202300) |
RYP2 |
"Rhythm for PS" |
Supports
up to 64kbyte WaveROM with samples in exactly the same log8bit format
as RYP4. Uses huge external parallel exponent-mantissa DAC (iG09560). |
PS-25, PS-35, PS-55, CN-1000 |
| YM2025 (pinout) |
SC |
"System Controller" |
FS-50, FS-70, FS-300, FS-500, FX-10, FX-20 |
|
| YM2114 (pinout) |
SCI |
"System Control Interface" |
FS-50, FS-70, FS-300, FS-500, FX-10, FX-20 | |
| YM2115 (pinout) |
PG |
"Phase Generator" |
FS-50, FS-70, FS-300, FS-500, FX-10, FX-20 | |
| YM2117 (pinout) |
OPB |
"Operator-B" |
FS-50, FS-70, FS-300, FS-500, FX-10, FX-20 | |
| YM2118 (pinout) |
OPC |
"Operator-C" |
Used in loop with OPCW |
FS-50, FS-70, FS-300, FS-500, FX-10, FX-20 |
| YM2119 (pinout) |
DGF |
"Degital Filter" |
Interesting chip, that can be loaded with arbitrary IIR coefficients |
FS-50, FS-70, FS-300, FS-500, FX-10, FX-20 |
| YM2120 (pinout) |
DACL |
"DAC Logic" |
FS-50, FS-70, FS-300, FS-500, FX-10, FX-20 | |
| YM21210 (pinout) |
DRV |
Serial to parallel converter for panel LEDs |
FS-50, FS-70, FS-300, FS-500, FX-10, FX-20 | |
| YM2122 E |
REV |
"Reverb" |
A
20bit reverb DSP in DIP-40, running at 9.6MHz. Internally does 37 delay
stages, each fed by input added with its own attenuated output, and
this input sum is also the output of each delay stage. Sounds
surprisingly good, despide its age (~1982). |
FX-10, FX-20, R-1000 (1U reverb unit, not the receiver with the same name) |
| YM2123 | REVI |
"Reverb Interface" | FX-10, FX-20 | |
| YM2124 (pinout) |
OPCW |
"Operator-CW" |
FS-50, FS-70, FS-300, FS-500, FX-10, FX-20 | |
| YM2127 (pinout) |
TE |
"Touch Envelope" |
FS-50, FS-70, FS-300, FS-500, FX-10, FX-20 | |
| YM2128, YM21280 (photo) |
OPS |
"OPS Operator" | DX-7, TX-7 |
|
| YM2129, YM21290 (photo) |
EGS |
envelope generator | DX-7, TX-7 |
|
| YM2142 | GE8 |
Simple polyphonic 4-voice+rhythm pre-FM age sound chip with 6 analog outputs. |
PCS-30, PSS-150, PSS-160 |
|
| YM2148 |
MKS |
"MIDI interface and Key Scanner" |
CX-5MII |
|
| YM2149 (datasheet) | SSG |
"Software-Controlled Sound Generator" |
Classic chip, clone of AY8912, used in ZX Spectrum, Atari-ST, MSX e.t.c. |
CX-5M, CX-5MII, CX-5MU |
| YM2151 (datasheet) | OPM |
"FM Operator Type-M" |
8ch
4op FM, used in many arcade machines (Atari, Sega, Konami etc), also as
built-in FM synth in some MSX machines and expansions for it |
CX-5MII, CX-5MU, SFG-01, early SFG-05 |
| YM2154 (IT215400) |
RYP4 |
"Rhythm Generator" |
Very
interesting rompler chip, that uses oddball custom serial roms
(YM2190), 2x 6voices. Samples in roms are in exactly the same log8bit
format as was in RYP2. Each half can use only it's own dedicated ROMs,
so the polyphony usualy is 6voices for percussion and 6voices for base. Requires external DAC - YM3010 or YM3012. Jari Kangas did an amazing job reverse engineering and documenting this chip here: GitHub PSR-70 reverse Local mirror: RYP4 Programming PDF |
CVP-3, DSR-2000, HS-8, PS-6100, ?PSR-50?, PSR-60, PSR-70, PSR-80, PSR-90, PSR-6300, RX-11, RX-15, RX-17, RX-21, RX-21L |
| YM21552 (IT215520) |
GHS-5 |
Entire kid keyboard in a single DIP16 chip. |
TYU-20 |
|
| YM21568 | Small serial ROM in DIP-8, used in music data cartridges for TYU-30, containing ten songs each.
This little serial ROM uses a custom interface consisting of sync,
continuous clock and data in/out, very similar to their chip-to-chip
serial interfaces for DSPs of the time. It's just 4kbytes in total, and
that's also the addressing limit of both its serial protocol and
cartridge header data. Songs are uncompressed and 350 bytes on average,
peaking out at over 481 bytes for the largest one ("La Paloma"). And
there's even 302 and 373 bytes left free that could have fitted one
more song on each cart. While song size is very similar to PlayCards,
data is completely different and in no ways compatible without some
reprocessing and conversion. However, since song data looks very
familiar to me and of the PSS-104/103/etc flavor, conversion support is
very likely to happen some day. Thanks to the great work done by Ian Wang of demodb.org we now have proper dumps of both cartridges! |
TYU-30 ROM PACK A |
||
| YM21569 | Cartridge custom serial ROM with ten songs. See YM21568 above. |
TYU-30 ROM PACK B |
||
| YM2159 |
LPD |
"LED Driver" |
Led array driver for panel indication or keyboard song melody lighting. |
CVP-3, CVP-20, CVP-50, DSR-1000, MR-500, PSR-90 |
| YM2160 |
OPCW2 |
"Rhythm Operator" |
PCM drums synthesizer with internal rom, containing 16 samples for 25 sounds. Polyphony 8 voices. |
Electone MC-200, MC-400, MC-600, MR-500 |
| YM2162 (IT216200) |
CRI |
Some specific serial interface for Electone Song Book cartridges |
CVP-8, MR-500 |
|
| YM2163 |
Info only from Cyberyogi, have not seen it myself. 4-channel soundsource. |
Testron CL-60910 |
||
| YM2164 |
OPP |
"OPP Operator" |
Used
in IBM MFC sound card as well. Has a very nice round and smooth sound,
and uses external stereo DAC for it's output (YM3012) |
CVP-3, CX-5M, DX-21, DX-27, DX-100, FB-01, MR-500, PS-6100; later SFG-05, also Korg DS-8 and Korg 707 |
| YM2165 (Y2165) |
Small
serial ROM in DIP-8, used in music data cartridges for TYU-30. Chip
with this designation is seen inside actual cartridge on a photo by Tim Milkfloats. Curiously, service documentation states that cartridges should contain YM21568 or YM21569.
I haven't seen it myself, yet. Interface may be similar to the YM2190:
bitclock, sync, addr to rom (a0..aN), data from rom (d0..d7). If I will
someday get my hands on a TYU-30 with cartridge(s), I will read them
out and post data and format there. This might allow to make an
improvised MIDI interface cartridge, with access to all song
multitimbrality features, custom or converted songs etc. |
TYU-30 | ||
| YM2188-x |
Serial drum roms most likely, but haven't yet checked those in life. |
RX-21, RX-21L |
||
| YM2190-1 (YM21901) |
ROM |
32kbyte
drum and percussion waveform ROM, that utilises an unusual custom
serial bus intended for RYP4 (YM2154). Contains only ride cymbal. |
RX-11, ?RX-15? |
|
| YM2190-2 (YM21902) |
ROM | 32kbyte drum and percussion waveform ROM, that utilises an unusual custom serial bus intended for RYP4 (YM2154). Contains only crash cymbal. | RX-11, ?RX-15? | |
| YM2190-3 (YM21903) |
ROM | 32kbyte drum and percussion waveform ROM, that utilises an unusual custom serial bus intended for RYP4 (YM2154). Contains hihat, cowbell and claps. | RX-11, ?RX-15? | |
| YM2190-5 (YM21905) |
ROM | 32kbyte
drum and percussion waveform ROM, that utilises an unusual custom
serial bus intended for RYP4 (YM2154). Contains a variety of bass and snare
drums, rimshot and tom. |
RX-11 | |
| YM2190-6 (YM21906) |
ROM | 32kbyte drum and percussion waveform ROM, that utilises an unusual custom serial bus intended for RYP4 (YM2154). Contains alternative hihat, cowbell and claps. | RX-11 | |
| YM2190-7 (YM21907) |
ROM | 32kbyte drum and percussion waveform ROM, that utilises an unusual custom serial bus intended for RYP4 (YM2154). Contains one bass, two snares, rimshot, shaker and three toms. | RX-11, ?RX-15? | |
| YM2190-8 (YM21908) |
ROM |
Drum and percussion waveform ROM, that utilises an unusual custom serial bus intended for RYP4 (YM2154). 32kilobytes of samples in log-8bit. | ?PSR-50?, PSR-60, PSR-70 |
|
| YM2190-9 (YM21909) |
ROM |
Drum and percussion waveform ROM, that utilises an unusual custom serial bus intended for RYP4 (YM2154). 32kilobytes of samples in log-8bit. | ?PSR-50?, PSR-60, PSR-70 | |
| YM21910 YM2191 (iT219100) |
KAP3 |
"Key Coder & Assigner for PS" | Same as YM2021; mentioned as a compatible replacement option. |
CN-1000 |
| YM2192 (iT219200) |
GE5 |
"Generator" |
Same as YM2022; mentioned as a compatible replacement option. | CN-1000 |
| YM2193 (iT219300) |
RYP2 |
"Rhythm for PS" |
Same as YM2023; mentioned as a compatible replacement option | CN-1000 |
| YM2198 |
KAS |
"Key assigner" |
Possibly
due to a mistake, GHS-6 chip in one service manual (TYU-40) is also
designated as YM2198, but it actually (and even on pcb silk screen) is
YM2214. |
YP-40 |
| YM2203 (datasheet) | OPN |
"FM Operator Type-N" |
3ch FM + 3ch SSG + 1ch Noise |
Arcade machines |
| YM2214 (iT221400) |
GHS-6 |
Interesting
early kid keyboard on-a-chip that supports serial cartridges (with song
data) that use a bus typical for electones and their early dsp systems
(sync, clock and data). And yes, seemingly inferior TYU-40 with fake cartridges not only use the same chip, but also has an external cartridge ROM that has to be dumped! TYU-30 both cartridges are now dumped, so for great justice TYU-40 needs to be done as well. |
TYU-30, TYU-40 |
|
| YM22600 |
"Pedal LSI" |
D-30 |
||
| YM22700 | "8 Rhythm" "Eight Rhythm LSI" |
A-60 |
||
| YM22800 |
"Fourteen Rhythm LSI" |
D-30 |
||
| YM22900 | "ABC Pattern Generator LSI" |
A-60 | ||
| YM23000 | "ABC Main" |
A-60 | ||
| YM2406 (XA804001) |
DFL |
"Digital Filter" |
EL-40, EL-60, HE-5, HS-5, HS-8 |
|
| YM2409 (XB022001) |
GEW1 |
"Generator of Wave 1" |
Supports
up to 4Mbyte of WaveROM and seems to support multiple chip configuration and
mixing through digital serial audio inputs/outputs. Uses external
YM3021 DACs. |
AVS-10, CVP-8, ?TX-16W?, RX-7, Electone HE-5, HS-8 |
| YM2410 (XA903001) |
GE10 |
Minimalistic
single chip toy synth. Just plain squares, non-FM/PCM. Surprisingly
compact (with respect to it's functions) DIP24 package. |
PSS-30, PSS-120, PSS-130 |
|
| YM2411 |
Cartridge ROM with serial
interface, compatible with TYU-30, and twice the capacity of its
cartridges - containing 18 songs in 8kbytes, bank-selected via pins on
the rom chip itself. And yes, seemingly inferior TYU-40 with fake cartridges does use the same soundchip and external cartridge ROM, that is just soldered right on the main pcb! Since TYU-30 both cartridges are now dumped, TYU-40 needs to be done as well. This will allow to expand the song collection for TYU-30 with six new songs from TYU-40 and also add missing ones from YTU-30 cartridges. Also, since data is very similar to PSS-104/103, I'll possibly make some conversion tool someday. |
TYU-40 |
||
| YM2412 |
ADF |
"Adaptive Digital Filter" |
|
CVP-8, ?TX-16W? |
| YM2413 (datasheet) | OPLL |
"FM Operator Type-LL" |
Used in MSX (expansion) and Sega Mark 3 |
PSR-6, PSS-140, PSS-170, PSS-270 |
| YM2414(B) (XB768001) |
OPZ |
"OPZ Operator" | Excellent
Sega Megadrive-ish tone generator. Requires external DAC - YM3012.
Electone HS-8 has five of these inside (besides GEW1), as well as
mysteriously CVS-10 has two of these as well - likely those are used
for percussive
attacks for each voice, since the body of module's organ voice is made
up from 9 components (sine and something else) which is obviously too
much for 4-op fm. I will definitely look into this at some point. |
CVP-8, CVS-10, DSR-1000, DSR-2000, DX-11, EW-20, HE-5, HS-5, HS-8, PSR-80, PSR-90, PSR-6300, TQ-5, TX81Z, YS-100, YS-200 |
| YM2416(B) XD082001 (pinout) |
GE11 |
Sampling
keyboard enirely self-contained controller with internal ROM and
includes sampling ADC and DAC, requires external DRAM
for user sample storage. Sampling is plain 8bit PCM. Unfortunately
program rom is internal and there may be no ways to control or
explore it besides key matrix. VSS-100 uses a better solution - MSX
AUDIO chip. VSS-200 is a bizzare contraption, that to somehow expand
the single chip toy keyboard (well essentially the VSS-30) has
additional master cpu (unfortunately mask rom HD6301)
that uses a separate gate array to control the toy keyboard through its
keyboard controls... Also since fine tuning cannot be done with GE11,
there is a kludge with cpu using a 4bit resistor DAC to adjust GE11
clock vco. That VSS-200 is one weird piece of misengineering! |
VSS-30, VSS-200 |
|
| YM2420 (XD211001) |
OPLL-2 |
"FM Operator Type-LL2" | PSS-140, SHS-10 |
|
| YM2423 | OPLL-X |
"FM Operator Type-LL-X" |
Mentioned to be with the same pinout as YM2413, but haven't seen these myself. |
FM Melody Maker (for Atari ST), Philips PMC100 |
| YM2424 |
OPZ2 |
"OPZ2 FM Tone Generator" | V-50 |
|
| YM2603 | ESG2 |
generates envelopes, lfos and controls for OPS2 |
PF70, PF80 |
|
| YM2604 |
OPS2 |
"FM Operator Type-S" | PF70, PF80, TX-802 |
|
| YM2608 |
OPNA |
FM+SSG+ADPCM chip |
||
| YM2610 (pinout) (translated datasheet) | OPNB |
FM (4x4op) + SSG (3voice) + Noise + 7x ADPCM in one massive ShrinkDIP64 package. |
NEO GEO |
|
| YM2612 (a_lot_of_info) | OPN2 |
Used in Sega MegaDrive/Genesis and some arcade machines, and is my absolute favourite. There exists a perfect clone of this chip called SE-95, which can be found in Sega Megadrive 1 clones. |
Sega Megadrive and Genesis |
|
| YM3010 |
DAC |
"2-Channel parallel input floating D/A converter" |
RX-11 |
|
| YM3012 (IT301200) (datasheet) |
DAC-MS, SUX DAC |
"Floating D/A Converter" |
CVP-3, CVP-8, CX-5MII, CX-5MU, DSR-1000, DSR-2000, FB-01, HS-8, MR-500, Korg 707, PSR-31, PSR-80, PSR-90, PSS-570, TX-81Z | |
| YM3014 |
DAC |
Only for RYP-6 |
PSR-31, PSS-560, PSS-570 | |
| YM3016 |
DAC |
|||
| YM3017 (XA800001) |
DAL2 ver.1 |
"DAC Logic" |
EW-20 (with s/n 01101 to 04100), HE-5, HS-5, HS-8, TQ-5, V-50, YS-100, YS-200 | |
| YM3020 (XA860001) |
DAC-FS |
"Serial & Binary input Floating D/A Converter" |
yet another 2ch crappy mantissa&exponent dac |
AD-808, DEQ-7 |
| YM3021 (XB073001) |
PSD |
"Pitch Sync DAC" |
Used with ADF chips. |
CVP-8, RX-7 |
| YM3028 (XE789A00) (pinout) |
DAL2 |
"Digial Analog Converter Logic" | AVS-10, CVS-10, EL-40, EL-60 | |
| YM3028A |
DAL2 ver.2 |
"DAC Logic" |
EW-20 with s/n over 04100 |
|
| YM3029 |
AFD0 |
"Floating point converter" |
RM-50, SY-55, SY-99 |
|
| YM3030 (XG075A00) |
DAC |
Mono DAC |
KB-100, PSR-7, PSR-8, PSR-47 |
|
| YM3032 |
DAL3 |
"Digital Analog Converter Logic" |
PSR-6700, SY-22, SY-35 |
|
| YM3301 (pinout) | RYP6 |
"Rhythm Generator 6" | Contains full rompler logic, drum waveform mask ROM and some output formating logic for external serial dac. |
PSR-31, PSR-32, PSS-560, PSS-570 |
| YM3302 |
RYP6 RYP6-2 |
"Rhythm Generator 6" |
Same pinout as YM3301, except for pin14 being renamed from A0 to RS (register select). |
DD-10, DSR-1000 |
| YM3404(B) (datasheet) | CDDF |
"Oversampling Digital Filter" | Boring, as FIR coefficients are stored in internal mask ROM. Likely used only in some CD players. |
|
| YM3413 (XE449A00) |
LDSP |
"L-Digital Signal Processor" also "Sound Field Creation DSP" |
Reprogrammable
16-bit DSP effects processor for hall, room and delay. Uses external
32kbyte (rarely 64kbytes - for example in FX-900) SRAM, and can address
up to 128kbytes. Sounds surprisingly good for its looks (DIP-40).
Programs are only 32cycles long, and generaly all rooms and halls use 9
delays with most using two taps. Supports 4 channels for input and
output, though usually only one channel is used for send and stereo
pair used for return. |
AVS-10,
CVP-50, CVS-10, DSP-E1000, EL-40, EL-60, EME-1, EW-20, FX-500, FX-900,
PSR-220,
PSR-230, PSR-500, PSR-510, PSR-5700, PSR-6000, PSR-6700, R100, SY-22,
SY-35, SY-55, SY-77, TG-33, TG-100, TQ-5, V-50, YS-100, YS-200, CLARION
DSP-959 |
| YM3414 |
ACDDF |
"Oversampling Digital Filter" |
Boring, as FIR coefficients are stored in internal mask ROM. Likely used only in some CD players. | |
| YM3415 (XE450A00) |
LEF |
"Effector" "L-Effecter" (sic) |
Digital reverb. Uses external 32kbyte DRAM. |
FX-500, HE-5, HS-5, PSR-5700, PSR-6700, SY-77 |
| YM3415B (XE450B00) |
LEF |
"Effecter" (sic) |
AVS-10, CVS-10, FX-900, PSR-6000 | |
| YM3419(B) (XF026A00) |
RYP7 |
Drum
rompler that uses external 8bit parallel rom. It
supports both 8bit linear and 12bit packed waveform data formats.
Supports
stereo panning, and up to 63 waveforms in 512kbytes or less. Has an internal stereo
DAC and 4 channel slow ADC. A rarely used feature of this chip is a
/GateEnable
output on pin50. It is not documented, yet operational. This pin is
used to suppress noise (by controlling FETs) but only in first "pilot" run
of PSR-36. |
DD-6, PSS-480, PSS-680, PSS-780, PSR-36, PSR-47, PSR-48 |
|
| YM3420AD and YM3420BF (YM3420BF pinout) |
OPU |
"CPU and FM Tone Generator" |
FM
tone generator along with some 8-bit CPU, RAM, ROM, MIDI interface UART
and a DAC. Program in PSS-480 uses
external gate array to switch ROM pages, as it can only address 64k.
PSS-480 has 288kbytes ROM for program+demo+styles, while in PSR-16 and 36
there's only 16k and 32k bytes for everything respectively. DSR-500 has 32kbytes of ROM and
2kbyte of external RAM. DSR-500, PSS-480 and PSR-16 use mono FM
output and only drums from RYP7 (on PSS-480) can be panned. OPU chip
has 256bytes of internal
RAM and 16kbytes of internal ROM. Tiny RAM size pretty much explains the capacity of sequencer in PSR-16. Versions AD and BF slightly differ in their pinouts. YM3420 AD version is in PSR-16, and seems to have slightly higher audio quality. |
PSS-480, PSS-680, PSS-780, PSR-16, PSR-36, DSR-500 |
| YM3422 (XE862001) |
ES1 |
"Format Converter" |
DAC Format conversion chips |
DSP-E1000, FX-900, SY-99, CLARION DSP-959 |
| YM3422B (XE862B00) |
ES1 |
"Format Converter" | DAC Format conversion chip | MU-80, P-100, P-150, PSR-7000 |
| YM3423 (XF031A00) YM3423A and somehow also YM7104 (XF779A00) |
GEW3 |
"Generator of Wave" "AWM Sound Source & Digital Filter" |
Supports
up to 4Mbyte waverom, but doesn't seem to support waveform sample
loading. Seems to be the last GEW to support 4-bit compressed wave data
besides the yamaha typical 8bit signed. |
CLP-550, CLP-650, CVP-20 |
| YM3424 (XF027A00) |
KPU KPU1 |
"Key Processing Unit" "Key Assigner & CPU" |
CLP-650, CVP-20, CVP-50 | |
| YM3427 (XF778A00?) (XF357A00) |
GE12 |
Square/snippet-wave synth with analogish drums. Unusually, it uses SPI-like serial port for control. Has an internal mono DAC. |
PSS-80, PSS-100 |
|
| YM3433, YM3433B (datasheet) | ALCDF |
"Oversampling Digital Filter" |
Unfortunately, FIR coefficients are in internal maskROM |
CLARION DSP-959 |
| YM3434 (XG610A00) (datasheet) |
AFUDF D.FIL |
"Oversampling Digital Filter" "Over sampling Digital Filter" |
Unfortunately, FIR coefficients are in internal maskROM | FX-900 |
| YM3436 |
DIR2 |
"Digital format interface receiver" |
AW16G, DS2416 (PCI DSP Factory card), SREV1, CLARION DSP-959, SB-168 | |
| YM3436DK (XG948E00) |
DIR2 |
"Digital format interface receiver" | AIEB2, SPX-2000 |
|
| YM3437 | DIT2 |
"Digital format interface transmitter" | AW16G, SREV1, UD-STOMP |
|
| YM3437C-F (XM530A00) |
DIT2 |
"Digital Format Interface Transmitter" | AIEB2 |
|
| YM3438 |
OPN2C |
6 channel, 4 operator FM. Used in some Sega arcade machines, as well as FM-Towns II |
||
| YM3439 |
FM chip used in Atari Falcon 030 |
|||
| YM3440 (XH238A00) (pinout) |
LEF2 |
"L-Effector" |
EL-40, EL-60 | |
| TMC3489NL (I assume it fits here) XE755A0(0) |
SFC |
"Signal Format Converter" |
AVS-10, CVP-50, PSR-6700, SY-22, SY-35 |
|
| TMC3493PH (I assume it fits here) XF987A0(0) |
GEW5 |
"AWM & FM Tone Generator" |
Very
interesting chip that supports unlimited cascading through special
cascading in/out bus and external sync. Two chips can share a single
waverom set using time domain multiplex. Four and even five of these
chips can comfortably sit together and produca a very nice sound (TG-33
and PSR-6700 being the case). Supports up to 2Mbyte of wave
data. FM capabilities appear to be designed similar to OPU chip.
Supports sample loading, if static RAM is conneted instead of ROM.
Sample format is yamaha's future dominant - signed 8bit linear. |
CVP-50, KB-100, PSR-7, PSR-8, PSR-27, PSR-37, PSR-47, PSR-48, PSR-3500, PSR-6700, SY-22, SY-35, TG-33 |
| YM35100 |
"Low Noise 512 Stage BBD" |
FX-10, FX-20 |
||
| YM3514 |
IEF |
Since otherwise PCS-30 contains
generic Z80 and a normal sound chip, this one (that so far didn' t pop
up anywhere else) might be some of their controller chips repurposed as a playcard reader peripheral, led and key scanner for Z80... I will look at it in some near future. |
PCS-30 |
|
| YM3526 (datasheet) | OPL |
"FM Operator Type-L" |
Used in arcade machines and C-64 FM exapnsion cart. |
|
| YM3533 | OPQ |
"OPQ operator" | Seems to be the same as YM3806. Very interesting 8channel FM chip, that seems to have an unusual sound
character for some patches and some unique sounds. It has some unique tricks up it's sleeve. Jari Kangas did an amazing job reverse engineering and documenting this chip here: GitHub PSR-70 reverse Local mirror: OPQ Programming PDF |
PSR-60, PSR-70 |
| YM3602 |
OPRW |
"OPRW Operator" |
Despite it's name, it's a PCM rompler chip for rhythm part. |
V-50 |
| YM3603 (XA805001) (pinout) |
KBS, KBS1 |
"Keyboard Scanner" |
EL-40, EL-60, HE-5, HS-5, HS-8, MKX-5 |
|
| YM3604B | CVS-10 | |||
| YM3608 (XA895A00) |
DEQ |
"Digital Equalizer" |
DEQ-7, REV-5 |
|
| YM3609 |
EGM |
TX-802 |
||
| YM3623(B) |
DIR |
"Digital Audio Interface Receiver" |
DIP28 chip with internal vco |
AKAI S3000XL, Luxman LV-113 |
| YM3801 | MSX AUDIO |
It
is quite a cool chip with FM synth and sampling using external DRAM.
Only VSS-100 has it, while VSS-30 and VSS-200 use strangely specific
single chip toy keyboard solution GE11. |
VSS-100 |
|
| YM3802 |
MCS |
"MIDI Communication & Service Controller" |
It's
a slow UART, but with built-in FIFO and MIDI clock tick output (pulses
SYNC pin on every received $F8). Has also metronome tick output, which
is just a divided midi clock pulse. An unusual use for these chips has
also been reported by a reader Maxim Vlasov: Yamaha MSX-series
computers YIS-805/128R2 use them for local networking! |
MSX YIS-805/128R2, RX-5 |
| YM3804 (IT380400) |
DSP |
"Digital Signal Processor" |
DSP in 64-pin shrinkDIP, uses DRAM, supports up to 192kbytes. |
CVS-10, DEQ-7, FX-900, GEP-50, HS-8, REX-50, REV-5, REV-7, SPX-90 |
| YM3806 |
OPQ |
"OPQ operator" |
Seems to be the same as YM3533, see above. Jari Kangas did an amazing job reverse engineering and documenting this chip here: GitHub PSR-70 reverse Local mirror: OPQ Programming PDF |
CLP-100, PSR-70 |
| YM3807 (XA902001) |
MOD |
"Modulation Data Generator" |
Provides modulation lfo source to YM3804. |
FX-900, GEP-50, HS-8, REX-50, REV-5, REV-7, SPX-90, SPX-900 |
| YM3808 (XA798001) |
MIX |
"Digital Mixer" |
CVP-50 | |
| YM3809 (XA796001) |
RFL |
"Re Sample Filter" |
Electone HE-5, HS-5, HS-8 |
|
| YM3812 (datasheet) | OPL2 |
"FM Operator Type-L2" |
Adlib classique |
PSR-11, PSR-12, PSR-21, PSR-22, PSR-31, PSR-32, PSS-460, PSS-470, PSS-560, PSS-570 |
| YM3813 | MPH |
"Micom Peripheral Hardware" |
MKX-5 |
|
| YM3818 | DSPM |
"Digital Signal Processor" |
C20, YDG-2030, YDP-2006 |
|
| YM3901 (XC282001) |
ADA |
AD/DA converter support chip, has some extra functions such as random number generator for noise generation. |
DEQ-7, GEP-50, R100, REX-50, REV-5 |
|
| YM3907 |
ADG |
Wave
Address counter array. Very typical design for 80-ties romplers when
synthesizer DSPs were devided into several chips. This is the first
stage, that determines pitch and just counts addresses. 64-pin package. |
RX-5 |
|
| YM3908 |
WDP |
Wave data processor, that does interpolation and scaling. For it's 14 (probably planned for 28?) voices it uses 14 independant DACs (YM3014). 64-pin package. | RX-5 |
|
| YM3931 |
PCM rompler in 64 pin shrinkDIP, used in some arcade machines |
|||
| YM3934 | PMM2 |
"Peak Meter Module" |
C20 |
|
| YM5107 | SRB | "Shift Register Bank" | Special memory for dsp write control store (2x 16bit x128). | REV-1 |
| YM5203 (pinout) |
SCD |
"System Control Decoder" |
FS-50, FS-70, FX-10, FX-20 | |
| YM5210 |
DPAP |
"Double Precision Arithmetic Processor" |
Interesting powerful (for the time) dsp mac unit (16x16bit multiply into 36bit accumulator). |
REV-1 |
| YM5211 | PMM |
Peak Meter Module |
Peak meter for16bit digital audio, outputs 2ch 8bit log (for dB). |
REV-1 |
| TMC57800N |
MIX5 |
"Mixer" |
Digital mixer to mix several GEW-5. |
PSR-6700 |
| YM6007 (XF164A00) |
DSP2 |
"Digital Signal Processor 2" |
Remarkable for having up to 28-bit sample precision delay memory. |
SPX-900, SY-99 |
| YM6029 (XH746A00) |
DPB |
"Digital Patch-Bay" |
FX-900 |
|
| YM6045(C) |
Sega Mega Drive / Genesis early chipset, also known as 315-5364 |
|||
| YM6046 |
Sega Mega Drive / Genesis early chipset, also known as 315-5309 | |||
| YM6071B (XH747A00) |
PMM3 |
"Peak Meter Module" |
FX-900 |
|
| YM60800 |
"String Ensemble Clock Generator" |
FX-10, FX-20 |
||
| YM6104 (XE788A00) |
DEQ2 |
"Digital Equalizer 2" |
Programmable digital EQ chip with programmable coefficients (internal RAM 128 words). |
C20, FX-500, FX-900, MU-80, SPX-900, YDG-2030, YDP-2006, CLARION DSP-959, |
| YM6633 (XH543A00) |
KSN |
Velocity 88-key keyscanner |
P-100, P-150 |
|
| YM7101 |
VDP |
VDP in Sega Genesis / Mega Drive, also known as 315-5313 |
||
| YM7102 (XG996A00) |
PAN |
SY-77, SY-99, W-5, W-7 |
||
| YM7103 | EGM2 |
SY-77, SY-99 | ||
| YM7104 (XF779A00) (somehow also YM3423) |
GEW3 |
"Generator of Wave" |
Possibly the same as YM3423 but in a different chip package, or something. |
CVP-50 |
| YM7107 | OPS3 |
SY-77, SY-99 | ||
| YM7108 (XF355A00) |
GE13 |
Entire squarewave+drums+accomp minimalistic synth in one tiny DIP18 package. Seemingly it can't get much simpler than that, however there's also GHS-5 chip (in TYU-20) with much less functions and in even smaller DIP-16 package. | PSS-20 |
|
| YM7116 (XG286A00) (pinout) (finally a PSS280 shematic) My research info on OPK and OPK2 |
OPK |
"OPK" |
8 channel stereo FM synth, with integrated PCM drums and DAC. DIP18. Although these keyboards are not rare and are frequently found circuitbent, there was totaly no information about these chips anywhere what so ever. Even regarding existence of OPK. Hooray - now there is! I also have captured all the data being written to the chip and reverse engineered a lot of it. PCM samples are with heavy dynamic compression and envelope gets added on the fly. | PSS-280, PSS-290 |
| YM7119 (pinout) | M3 |
"AWM Tone Generator with Digital Filter" |
Giant 128pin chip, seems rather experimental, as it has a lot of "test pad" pins (at least 12) or no connect ones (at least 13). Seems to be completely reprogrammable (no internal ROM with fixed microcode) |
RM-50, RY-30, SY-55, SY-77, SY-99 |
| YM7121C |
SPC V |
"Signal Processor & Controller & RAM for CD Player" |
CD pickup servo control, efm demod, fec, jitter attenuator. Not a synth chip. |
|
| YM7126 |
||||
| YM7128(B) (datasheet) | SP2 |
"Surround Processor" |
Can also do simple reverbs, has a miniature ram on die, operates in yamaha-style weird samplerate: 23.6kHz |
|
| YM7129 (pinout) My research info on OPK and OPK2 |
OPK2 |
"OPK2 Operator" |
8
channel stereo FM synth, with integrated PCM drums and DAC. DIP18.
Although these keyboards are not rare and are frequently found
circuitbent, there was totaly no information about these chips anywhere
at all. Even regarding existence of OPK. Hooray - now there is! I
also have captured all the data being written to the chip and reverse
engineered a lot of it. PCM samples are with heavy dynamic compression
and envelope gets added on the fly. |
PSS-26, PSS-101, PSS-102, , PSS-103, PSS-104, PSS-280, PSS-290, PSS-380, PSS-390. |
| YM7131 (XH236A00) (pinout) |
OPLZ |
"FM Tone Generator" |
Did
you knew such an OPLZ even existed? I haven't scoped/captued it, but it
seems to be of the rare kind that outputs linear (instead of
exponent&magnitude) digital audio. |
EL-40, EL-60 |
| YM7132 (XH235A00) (pinout) |
OPWZ |
"AWM Tone Generator" |
EL-40, EL-60 | |
| YM7133 (pinout) |
LRV |
An
interesting 12-bit reverb DSP in DIP28 with integrated mono ADC and
stereo DAC. Samplerate is rather high for what it is - 41.667kHz. Uses
external DRAM (single 4bit x 64k chip) that it accesses in triplets to
get 12bit/instruction. Algo uses just 31 instructions (+1 seems to be
blank for dram refresh where no write or read occurs) per sample. WCS
unfortunately is all in internal maskrom, so you have only a fixed algo
with no parameters. Depending on how low it can go (and dram will
refresh), perhaps it can be underclocked for grittier sound and longer
reverb tails. |
PSR-18, PSR-19, YPR-30 |
|
| YM7137 (pinout) (typical usage schematic) YM3137 (XH242A00) YM3137-3D (XI257A00) YM3137-4E (XI262A00) YM3137-5F (XJ292A00) YM7137-6G (XK208A00) |
OPJ |
"OPJ Operator" |
CPU
+ FM + PCM drums. While considered by many to be a stubborn unbendable
all-in-one chip, I managed to find an access to it's soundsource, which
I was digging back in the day to use in a first-of-a-kind OPJ sound
module.
It is rather similar to OPK, but OPJ's builtin CPU firmware lacks any
realtime assistance stuff that allows OPK synths have more live, fun
and dazzling sounds. There are at least five maskrom versions: first, 3D, 4E, 5F and 6G. There probably should have been something like 1B and 2C as well, but haven't stumbled upon those yet. 4E is only used in the keyboards with 61 key and "digital signal processing" feature. The only thing added is "reverb" and "echo" button controlled toggling of two output pins for LRV reverb chip. There are also some key scan pin differences between 3D and 4E. Version 5F is found only in PSR-100. I am planning someday to kludge up a page, devoted to OPJ hacking. Not sure when, though. |
PSR-2, PSR-3, PSR-18, PSR-19, PSR-100, PSS-9, PSS-16, PSS-50, PSS-190, and other (if any) FM keyboards with "Ad-lib" button. |
| YM7138 | GEW6 |
"AWM Tone Generator & D/A converter" |
Rompler,
capable
of addressing up to 4Mbyte of 12-bit packed or 8-bit linear wave data,
single sample size limited to 64kpoints. Decompressing (unpacking)
12-bit/sample data feature looks nice, but it has otherwise very
limited
processing capabilities and has limited single DAC with 4 channel
(selectable only on/off) analog mux system built-in that cannot pan
sounds gradually. Its 4 ch muxed DAC
is primarily
used as hard wired four fixed pan positions or can also be used as dry
and fx sends
(same as in OPU). LFO (at least for pitch) and even envelopes seem to
be handled in software (usually via matsushita/panasonic cpu) and pitch
& level gets
updated at about 80Hz or something. There's no dsp parameter smoothing
engine for smooth updating, so envelopes do audibly buzz. Volume
multiplier is also very improvised - something like 12x5bit. I wouldn't
call it a real DSP. It uses 16 clocks for every voice to be calculated
- so it rather definitely does multiplication using sequential shifts
and additions. However, it also has an FM tone generator capabilities, as well as sample loading (if wavesram present on board) feature which doesn't seem to be ever used (besides at synth development). |
DD-11, PSS-590, PSS-595, PSS-790, PSS-795, QY-10 |
YMF, YMM, YMW series
| IC name |
Yamaha's alias |
Yamahas official short description | My notes |
Used in |
| YMF262 |
OPL3 |
Legend in default PC sound of early 90-ties. |
||
| YMF278B |
OPL4 |
"FM+Wave Table Synthesizer LSI" |
There is something very GEW6-ish in it. It's different, but there are notable programming, format and stucture similarities. |
|
| YMF281B YMF281B-D |
OPLL-P |
|||
| YMF704B-S YMF704C-S |
OPL4-ML |
"FM+Wave Table Synthesizer LSI" |
Single
chip solution of a very simple general midi compatile synth. Used on
tiny "Creative WaveBlaster - compatible" boards for PC sound cards.
Contains 1Mbyte of wave data and an OPL-3 compatible chip. |
|
| YMF709 XT997A00 |
OPOS |
"OPOS" |
Odd 8-voice FM synth chip in DIP24, uses YM3012 dac. |
HD-100 |
| YMF711 |
OPL3-SA2 |
"OPL3 Single Chip Audio System 2" |
Boring ultra-integrated sinle-chip solution for ultra-cheap PC soundcards. |
|
| YMF715 |
OPL3-SA3 |
"OPL3 Single Chip Audio System 3" | Boring ultra-integrated sinle-chip solution for ultra-cheap PC soundcards. | |
| YMF724 | DS-1 |
Boring ultra-integrated sinle-chip solution for ultra-cheap PC soundcards with PCI slot. |
||
| YMF730 | AC-2 |
Integrated ADC, DAC, mixer and S/P-DIF interface for PC sound cards. |
||
| YMP706-F (XT329A00) |
FS1, FS1-AB |
"AWM Tone Generator & Digital Filter" |
Used for FM and "formant" synthesis. |
DX-200, FS1R, PLG150-DX |
| YMW258-F (XJ427A00) (pinout) |
GEW8 | "AWM & FM tone generator" |
PCM+FM 28 voice dsp, that renders waves quite nicely. It seems it was designed as a high end sound source of the time, and requires 18bit external DAC. For sound modules with reverb, there is special port (pin26..31) to connect optional LDSP (YM3413). Wave memory can be up to 4Mbytes. Sample loading is supported, but it then requires large amounts of static memory (along usual waverom). Supports both 8bit and 12bit wave formats. |
MU-5,
PSS-51, PSR-82, PSR-200, PSR-210, PSR-215, PSR-300, PSR-310, PSR-400,
PSR-410, PSR-500, PSR-510, PSR-600, QR-10, QY-20, TG-100 |
| YMW258B-F |
GEW8S |
"AWM tone generator" |
Seemed to be just 3.3V version of GEW-8, but it's still powered from 5V, so there's some other differences yet to spot out. |
PSR-320, PSR-420, RY-9, ?PSR-600, ?PSR-210, ?PSR-215, ? - means I am not sure about those ones regarding 5V or 3.3V |
| YMW259-F |
GEW9 |
"AWM Tone Generator & Digital Filter" |
38? (for P pianos it is 32)
voice polyphony oldschool beastie. Uses external, standard DACs (in
case of PSR-5700 - analog devices AD1862) as well as need external
effects processors (like LEF and LDSP). Given it is used with
11.727MHz, presumably it uses 7 clocks per voice (7x38) for
44.1kHz, but it needs to be checked in hw. |
P-100, P-150, PSR-5700, PSR-6000 |
| YMW266-F (XK817A00) |
M3B |
Rare,
and therefore interesting, but still just an AWM rompler - so equally
boring. It was designed as a high end thingy, with ability to address
up to 32Mbyte of 16bit wide waverom. |
W-5, W-7 |
|
| YMW270-F (XK328A00) (pinout) |
GEW7 |
"AWM Tone Generator and DAC" |
8-bit
CPU and RAM (~256 bytes total), combined with a
14-voice hardware multichannel rompler. Rompilng part seems
to be a cut down version of GEW6. There is no built-in UART for MIDI,
unfortunately. Samples
are in linear signed 8-bit format, however packed 12-bit format is also supported. Shared ROM space for program, styles,
demos,
lookup tables and samples. ROM address space is only 512kbytes, and
what's worse - a single sample cannot be longer than 16kbytes. However it supports reverse
playback that , as
far as I've seen, never appeared to be used on actual keyboards with
these chips. Only used in keyboards with the "Music Mode Selector" knob. Grab the pinout file, as it was nowhere else to be found. I have done some lot of successful disassemblies of the firmware, and also run those with modified code and did all sorts of bizzare fun. I am planning to kludge up a page, devoted to GEW7/7S internals and firmware design. Be back in a while.. |
PSS-11, PSS-21, PSS-31, PSR-75, PSR-110, PSR-150 |
| YMW275-F (XN346A00) |
SWP20 |
"AWM tone generator coped with MEG; Standard Wave Processor" |
Monstrous
(back then) chip with 32 voice polyphony and filters. Can be paired to
double it. Supports sampling. Requires a bunch of accompying chips. |
PSR-7000 |
| YMW275B-F | SWP20B | Seems pin-compatible and interchangable with the non-B version. |
MU-80 |
|
| YMW276-F (XM732A00) |
GEW7I |
"AWM Tone Generator and DAC" |
Odd
and rare variation of
ortherwise very popular low quality GEW-7. Although has the same
pinout, and still 5V, but is stated as not interchangable with GEW7 and has some bugfixes regarding
DAC outputs. |
DD-9, DD-20, also later revisions of PSR-110 |
| YMM279-F (XN347A00) |
SWD |
"Standard Wave Decoder" |
One of the accompanees for SWP20.
Seems to do log-8 format sample decompression, however there could be
more to that, since SWP20 passes 2-bit format number to this one, so
there might be more - for example, it could be converting linear 8bit,
log 8 and something else all into 16bit. Will likely probe around it one day and capture what it does exactly. |
MU-80, PSR-7000 |
| YMW282-F (XP206A00) (pinout) |
GEW7S |
"AWM tone generator with integrated DAC" |
8-bit
CPU and RAM (~256 bytes total), combined with a
12-voice hardware multichannel rompler. Rompilng part seems
to be a cut down version of GEW6. There is no built-in UART for MIDI,
unfortunately. Samples
are in linear signed 8-bit format, however packed 12-bit format is also supported. Shared ROM space for program, styles,
demos,
lookup tables and samples. ROM address space is only 512kbytes, and
what's worse - a single sample cannot be longer than 16kbytes. However it supports reverse
playback that, as
far as I've seen, never ever appeared to be used on actual keyboards with
these chips. A reader (Thank you, John!) reported that PSR-190 also uses this chip, although the keyboard looks like a downgrade of PSR-220 (that has much better sounding GEW10), and recently I confirmed this myself as well - in both PSR-190 and it's mono variant - PSR-78. This "S" version of GEW7 seems to only differ in lower system voltage (+3.3V instead of +5V) and altered pin48 bonding. I have done some amount of successful tinkering with the firmware, and also run those with modified features and did all sorts of bizzare fun. I am planning to kludge up a page, devoted to GEW7/7S internals and firmware design. Got this baby rather deeply reversed, down to sample and voice descriptors and program structure. Be back in a while.. |
PSS-6 (surprisingly), PSS-12, PSR-73, PSR-74, PSR-76, PSR-77, PSR-78, PSR-125, PSR-130, PSR-180, PSR-185, PSR-190 |
| YMW703 (XR648A00) |
GEW10 |
"AWM Tone Generator" |
Has
a general purpose CPU integrated, requires external DAC. Renders waves
very well, and has nice sound (significanty better than GEW7 and GEW12). Sample
formats supported are 8bit signed linear format and a then-new packed
12bit (incompatible with their classic 12bit) format. |
PSR-220, PSR-230 |
| YMW716 (XT332A00) |
GEW11 |
Some
realy weird, stripped down GEW (CPU+12voice_rompler+DAC) even with integrated
ROM (I suppose 64 or 128kbyte) and all this in hilarious DIP-28. I am
still searching for any info on them, as Yamaha does not seem to have any
service info for these keyboards. Please let me know, if you have
stumbled upon this chip in any other keyboard. |
PSS-7, PSS-14, PSS-15 |
|
| YMW717-F (XS994A00) |
GEW10-2 |
"Tone Generator" |
While it seems just to be a
minor change version from the YMW703 running from the same weird
29.411MHz clock, this one does 31 voice polyphony instead of 28 in the
PSR-220&230. |
PSR-330 |
| YMW728-F (XU355A00) YMW728B-F (XV762A00) (pinout and generic synth schematic) |
GEW12 GEW12B |
"AWM Tone Generator" |
Conceptual,
technical and spritual successor to the horrid GEW7S. However it is
much better, with 4Mbyte (2Mword) address space (instead of 512k in
GEW7) but
still in 16kbyte pages for control cpu (that still has 64k address
space), samples can br 64kbytes long instead of only 16kbytes, and it
now features a built in MIDI UART and an integrated keyboard scanner with velocity sensing. Still sound is abominable (and
~27kHz samplerate is not to blame), partly due to intentionally
lowpassed and crippled samples (even when not saving space:
like for the crash cymbal, brass and certain strings - just
severely brickwall-lowpassed but still taking as
much space as a full bandwidth sample). Includes CPU and RAM. Shared 16bit ROMspace for program, auto-bass-chord patterns, song data, lookup tables and samples. Interestingly while actually it does 32 voices, those are used for pseudo-stereo sounds and dual patches, so that most synths are 16 voice. No dsp effects. Sample formats supported are 8bit signed and packed 10bit. I have done disassemblies of the firmware and what not, and also run those with modified features and did all sorts of bizzare fun. Such a lofi chip was a ridiculous surprise to find in a 76-key digital piano YPR-50, along with just a 1Mbyte rom for everything. |
DD-35,
EZ-150, EZ-20, EZ-J23,
PSR-79, PSR-140, PSR-160, PSR-170, PSR-172, PSR-175, PSR-195, PSR-202,
PSR-240, PSR-248, PSR-260, PSR-B20, PSR-GR200, PSR-J20, YPR-50; (as well as almost all other with
round "DJ"
button, except PSR-350 and maybe something else) |
| YMW767-V YMW767-VT YMW767-VTZ ?YMM757-VTZ |
SWL01 SWL01T SWL01B |
"CPU & XG Lite Generator" |
CPU with minimalistic hardware SWP-xx type synth. No insert/aux effect, only reverb&chorus; 32-voices. Not much fun at all. Just a bare minimum GM with additional sounds. |
CP-33,
DD-65, DGX-203, DGX-205, DGX-305, DGX-505, DGX-520, DGX-620, EZ-J24,
EZ-200, EZ-250, EMX series, H-01, HD-200, KB-180, KBP-300, KBP-500,
MM-6, MM-8, NP-30, P-70, P-85, P-95, P-140, P-140S, PSR-273, PSR-275,
PSR-293, PSR-295, PSR-E203, PSR-E323, PSR-K1, PSR-R300, PSR-S500,
PSR-VN300, SKB-180, YPT-200 |
(YA876A00) |
SWL01U |
"CPU" |
DD-45 (YDD-40), NP-V60, NP-V80, P-35, P-105, PSR-E432 |
|
| YMW830-V (YE577A00) YMW830-VZ |
SWLL |
Very
minimal, Casio-ish chip,
that boots from external high speed serial (quad-)spi rom, and is in an
80 pin package. Has an internal PLL that multiplies external 16.9344MHz
clk to 67.7376MHz. There's also a JTAG port. There's a MIDI port as
well (pin 54-out, 55-in cmos3v3 level). Remie PCB has an unpopulated spot for usb controller. |
PSR-F50, PSS-A50, PSS-E30, PSS-F30 Remie, likely also PSR-F51 |
|
| YMW832-CZ | SWP70 |
This
one is capable of incredibly fantastic sound. Uses NAND memory for
waves, which is considerably concerning in regards to longevity of
synth's life... though to fix it you may just need to do pcb rework of
the chips and reflashing them. However, someone has to make working
dumps for that to be a doable option. |
MODX-6, MODX-7, MODX-8. |
YA series
| IC name |
Yamaha's alias |
Yamahas official short description | My notes |
Used in |
| YA3256 | See below - IG12032 | MK-100 |
YSD/YSF/YSP/YSS series
| IC name |
Yamaha's alias |
Yamahas official short description | My notes |
Used in |
| YSD917 |
DIR5 |
"Digital Format Interface Receiver" |
||
| YSF207 (XI976A00) (pinout) |
DCF1 |
"Digital Controlled Filter" |
EL-40, EL-60 |
|
| YSF210 (XK280A00) |
"8 time Over Sampling Digital Filter" |
YDG-2030, YDP-2006 | ||
| YSP99 LZ95D59 (XM047A00) |
Gate array |
FX-770, REV-100, REV-500, YDG-2030, YDP-2006 | ||
| YSS203 (Xi022A00) |
HL DSP |
DSP-E1000 |
||
| YSS205-F |
SW-60XG |
|||
| YSS208 (XI816A00) |
DSPN |
"Digital Signal Processor" |
EMP-100, FX-550, FX-770, P-100, P-150, REV-100 |
|
| YSS217(B)(-F) |
DSP-V |
"Digital Signal Processor" |
DSP for "virtual acoustic" syntesis |
PLG-100VL, VL1m |
| YSS225 |
EP |
DSP for effects, I think I saw these used on some pc isa or pci boards. |
||
| YSS228-F (XQ962A00) | DSP3 | Effects DSP, also used in the PLG harmonizer board. | M3000, PLG-100VH, ProR3 | |
| YSS228D-F (XQ962C00) |
DSP3 | REV-500 | ||
| YSS228E-F | Used for effects and mixing |
DS2416, SW-1000XG |
||
| YSS233-F (XP268A00) |
MDSP |
Used for effects and mixing | PLG150-AN, PLG150-DX |
|
| YSS236 (-F) (pinout and schematic) | VOP3 | Vocal harmonizer. Can also be used for other effects and filtering. | CVP-107, CVP-109, CVP-208, CVP-210, CVP-700, CVP-900, FS1R, PLG150-AN, PSR-740, PSR-2000, PSR-2100, PSR-9000 | |
| YSS903 | KP2V |
"Karaoke Processor 2 for Video disc player" | ||
| YSS910(-S) (XV988A00) | DSP6 | 01X, AW-16G, AG-STOMP, UD-STOMP, REV-1, SPX-2000 | ||
| YSS915 | KP2V2 |
"Karaoke Processor 2 for Video disc player" |
Single
chip immensly crappy karaoke echo and some very limited rudimentary
pitch shifting. Besides digital audio bus i/o, also has a built-in mono ADC and a stereo DAC. |
Omnitronic DVP-36 |
| YSS916 | CNV3 | FIR convolver | REV-1 | |
| YSS919 (XZ693A00) | DSP7 | "Digital Signal Processor" | Massive DSP in PQ-208 package. | 01X, AW-16G, SB-168 |
| YSS919B (XZ693B00) |
DSP7 | "Digital Signal Processor" |
SP2060 |
|
| YSS928 | AC3D3 | DPU-50 | ||
| YSS952 (pinout and block diagram) |
DSP2 |
"Digital Sound Producer-2" |
Contains FM synthesizer and two tiny DSPs. |
NS-WSW160 |
Custom Yamaha chips from miscellaneous chip fabs
| IC name |
Yamaha's alias |
Yamahas official short description | My notes |
Used in |
(XB810001) |
SI-1 |
Serial
interface for ROM/RAM cartridge slots. Some odball stuff from the
electone times. As it seems, yamaha was then completely crasy about
serial interfacing, even within a single board. |
HS-8 |
|
| JG541023 |
DDE1 |
"DAC Dynamic Range Enhancer" |
probably the same vendor as iG |
MU-90R, MU-100R |
| HD92098 (XM309A00) |
MEG |
"Multiple Effect Generator" |
One of the accompanies for SWP20 in PSR-7000 and MU-80 for insert and system effects. Used also in the overcomplicated W-5/W-7. |
MU-80, PSR-7000, W-5, W-7 |
| HG73C201FD (XT890A00) | SWX00 | "Tone Generator" | Crappy sound of the
DJX is related to the fact, that most, if not all, of the wave rom
comes from terrible GEW-12 based keyboards - the ones with a black
"DJ!" button. Or maybe it's oher way around... who cares. All the
garish and lackluster samples like raunchy "One more time!",
"Yeeaahh.." and "Comeon-a!" are found on GEW12 keybards (that you can
easily find for 25$), so there is nothing special or "rare" about DJX. Supports 8bit linear, compessed LDPCM and 10bit or 12bit as well - probably something else as well. Chip is 3.3V, but rom data inputs are fully 5v-tolerant (likely other inpus as well) and chip is used with 5V roms. And sampling in both DJX and DJX-2 are done by the control processor (simple cpu, not DSP!), using analog inputs designed for potentiometer slow readout. Scary lo-fi cheapness. | PSR-225, PSR-270, ?PSR-272, PSR-D1 (DJX) |
| HG73C205FD (XU947B00) |
SWX000 |
"Tone Generator" | RM1x, CVP-103, CVP-201 | |
| HG73C205AFD (XU947C00) |
SWX00B |
"Tone Generator & CPU" |
Has
a great, expressive sound, and can sound rather delicate. Can operate as
both a system controller and a real DSP. Usually used in pairs, with
one doing system control and additional DSP functions (more inserts or
effects sections), while the other does all wave and main effect
funtionality. When used alone, it is a good XG synthesizer. Surprisingly it's found also in a PSR-350 with the ridiculous "DJ!" button, and everything suggesting that keyboard has the lofi GEW12 instead. In AN-200 and DX-200 it is used as a controller, AWM sounds and effects processing. FM is done on a separate PLG-DX module, and for AN - a separate PLG150-AN board. It is also both controller and DSP in a EZ-TP trumpet and EZ-EG guitar. Developed in 1998. |
AN-200, CLP-950, CVP-105, CVP-107, CVP-109, CVP-202, CVP-203, CVP-204, CVP-205, CVP-206, CVP-208,
CVP-210, DB-51XG, DD-55, DJXII, DJXIIB, DGX-300, DGX-500, DX-200, EZ-30, EZ-J53, EZ-EG, EZ-TP, MIE-2XG,
P-60, P-90, P-120, PF-1000, PSR-280, PSR-350, PSR-450, PSR-540, PSR-550,
PSR-640, PSR-1000, PSR-1100, PSR-A1000, PSR-GX76, QY-100, S-03,
S-08, YPP-100, YPP-200 |
| LC9111A-310 (XG077A00) |
LDO2 |
Gate
array with glue logic, LED scanning, general purpose outputs, memory
page (16kbyte) flipping management for HD6303 CPU, as well as chip
select decoding. |
PSR-47 |
|
| LC9111A-321SS28 (XG276A00) |
SS28 |
"SS28" |
Glue logic gate array, that also provides memory space extension (16kbyte pages) for large ROM connection. |
PSS-380, PSS-390 |
| LC92018B-476 (XI045A00) |
RI54 |
"RI54 Gate Array" |
Gate array for sharing wave bus between many GEW-5. |
PSR-6700 |
| LC92018B-500 (XI616A00) |
LD03 |
PSR-4000 |
||
| M50734SP (XB826001) |
"Master CPU" |
A rather specific microcontroller that has various inputs and outpus only for electone stuff like knee lever and such. |
HS-8 |
|
| M60011-0110P (XB828001) |
ADEC |
"Address Decoder" |
Address decoder gate array used to generate chipselects for various peripherals around cpu. |
HS-8 |
(XB829001) |
GFA |
"GEW Format Adaptor" |
For GEW1. |
HS-5, HS-8 |
| R8A02032BG (X8810A00) |
SWX02 |
Wave processor, that contains fast (128MHz internal, 64MHz bus, PLL'ed from 16MHz quartz) SH-2A CPU (32bit), equipped with JTAG. |
DTX-Multi 12, DGX-630, DGX-640, MDP-30, MOX-6, MOX-8, PSR-S550, R01 (Modus digital piano), SB-168 |
|
| R8A02042BG (YC479A00) |
SWX08 |
Curiously,
the
DSP part for some reason is not allways used, and instead functions
only as a system
controller along with
SWP51L for the wave and effects job. So in regards to its sound, only
MX-series and DGX-650 should be taken into account, since these are the
only ones with effects
DRAM or WaveROM pins used. |
DGX-650, MX-49, MX-61, MX-88, PSR-S750, PSR-S950 | |
| TC14L010 (XM407A00) |
"Gate Array" |
Toshiba
gate array, customized for multiport async serial stuff for midi and
host, misc i/o, as well as address space decoding logic. |
MU-80 |
|
| TC14L010AF-1742 (XQ460C00) |
SHI |
"Gate Array" | Contains a lot of glue logic such as address map decoding. |
PSR-4000 |
| TC17G005AN-0023 (XB809001) |
MI1, MI-1 I/O |
"M-Electone Interface" |
Electone/clavinova stuff circa 1987. Toshiba gate array, customized for some serial I/O related to ram packs. |
CVP-8, DSR-1000, EL-40, EL-60, Electone HE-5, HS-5 and HS-8 |
| TC17G008AP-0011 (XB829001) |
GFA |
"GEW Format Adaptor" |
For GEW1 wave outputs |
Electone HE-5 |
| TC17G008AN-0013 (XB811001) | RBUF | "Rhythm Buffer" | Gate
array that "emulates" two of strange serial roms (YM2190x) using data
from classic parallel 8-bit ROM, up to 256kbytes. ShrinkDIP-42. | PSR-80, PSR-90, PSR-6300, HS-8 |
| TC170C120SF-003 (XQ036A00) |
SWP00 |
"(AWM Tone Generator) Standard Wave Processor" |
Custom gate array ASIC manufactured by toshiba. Iconic XG sound of 1995. Yes, CS1X has nothing more than a simply generic early XG module. |
CS-1X, DB-50XG, MU-50, P50-m, PSR-520, PSR-620, PSR-4000, QS-300, QY-700, SW-60XG |
| TC203C060AF-001 (XS724A00) |
SWP00M |
"(AWM Tone Generator) Standard Wave Processor" |
3.3V version of SWP00, possibly with some other changes, but not necessarily. Custom gate array ASIC manufactured by toshiba. Lofi-ish DSP that has some appealing aspects to its muddy sound. |
QY-70, PSR-530, PSR-630 |
| TC203C760HF-001 (XR738A00) |
SWP30 |
"AWM Tone Generator coped with MEG, Standard Wave Processor" |
Very nice flagship-beyound-XG sound of around 1997-1999. | MU-90, MU-90R, MU-100, MU-100R, PSR-730 |
| TC203C760HF-002 (XS725A00) |
SWP30B |
"AWM Tone Generator coped with MEG, Standard Wave Processor" |
Some MU-100(R) have these ones instead of SWP30, so they are likely interchangeable/pin compatible. Developed in 1996. Very nice flagship-beyound-XG sound of around 1997-1999. |
A-5000, A-6000, CS-2X, CS-6R, CS-6X, CVP-207, CLP-208, CLP-209, CVP-210, CVP-700, CVP-900, EX-5, EX-5R, EX-7, Motif 6/7/8, MU-128, PSR-740, PSR-2000, PSR-2100, PSR-9000, RS-7000, S-30, S-80, S-90, SW-1000XG |
| T6TJ3XBG-0001 (X8940A00) |
SWP51L |
"Tone Generator" |
A cut-down version of SWP51/B.
Using full monstrous SWP51 in usual PSR kind of keyboards was obviously an
overkill, so later ones use these smaller cut-down "Lite" ones. MOX already was designed as MOXF, yet just had the second SWP51L not soldered/mounted on board, and a different/simplified firmware. |
CVP-501, CVP-609, MOX-6, MOX-8, MOXF-6, MOXF-8, PSR-S710, PSR-S910, PSR-S750, PSR-S950, R01 (Modus digital piano), Tyros-4 |
| T6TZ2XBG-0001 (X7376A00) |
SWP51 |
"Tone Generator" |
CVP-401, Motif-XS, Motif-XF |
|
| T6TZ2XBG-0002 (X7376B00) |
SWP51B |
"Tone Generator" | Quite
a remarkable chip. For a yamaha, It's powerful and massive in all
regards, rather comparable to Roland's amazing WX chip. |
F-11 (Modus), H-11, Motif-XS Rack, PSR-S700, PSR-S900, Tyros-3 |
| T8F02TB-0102 (X0060A00) |
SWP50 |
"Tone Generator" | Astounding DSP that can sound way different from all the legacy without much effort. It is powerful and rather comparable to Roland's amazing XV or even WX chip. | CLP-150, CP-300, DDK-7, MO-6, MO-8, Motif Rack, Motif-ES, P-250, PF-500, PSR-1500, PSR-3000, S-90ES, Tyros, Tyros-2 |
iG custom ASICs
| IC name |
Yamaha's alias |
Yamahas official short description | My notes |
Used in |
| iG02600 (pinout) |
VCA |
"Voltage Controlled Amplifier" |
iG02600 - "Gain rank M" iG02601 - "Gain rank L" iG02602 - "Gain rank K" |
FS-50, FS-70, FS-300, FS-500, Electone A-55N, C-55N |
| iG02610, iG02611 |
VCF |
Analog VCF. |
Electone A-55N, B-55N, C-55N |
|
| iG03290 |
"BBD Clock Driver" |
C-55N, FS-50, FS-70, FS-300, FS-500 | ||
| iG03971 |
"Reverb" |
FS-50, FS-70, FS-300, FS-500 | ||
| iG06110 |
IEF |
Magnetic head amplifier for Playcard reader and additional filter for some implementations of playcard system as a filter for harmony obbligato voice filtering. |
PC-100 |
|
| iG06450 (pinout) |
DRM1 |
FS-50, FS-70, FS-300, FS-500 | ||
| iG06500 (pinout) |
DAC |
"Degital to Anlog Converter" |
FS-50, FS-70, FS-300, FS-500, FX-10, FX-20 | |
| iG065300 | GEF |
"Low Pass Filter" |
PC-100 |
|
| iG07110 |
DRM2 |
FS-50, FS-70, FS-300, FS-500 | ||
| iG071400 (internal schematic with pinout) | MMA |
PC-100 |
||
| iG07950 |
"Clock Buffer" |
FS-50, FS-70, FS-300, FS-500 | ||
| iG09510 iG095100 |
GE6 |
"Generator" |
Some
interesting PCM wavetable synthesizer just for monophonic "solo"
section, although it actually is 3-voice. Supports 8kbyte WaveROM.
Requires external DAC. |
PS-55, CN-1000 |
| iG09520 iG095200 |
IE2 |
"Intelligence Electone" |
Intelligence is allways watching you. And your playcards too. Seems to be more advanced version of YM1020. |
CN-1000 |
| iG09560 iG095600 (schematic with pinout) |
DAC |
"Digital Analog Converter" |
Parallel
input, "floating point" data: 10 bit mantissa and 3bit exponent. Two
stock chips combined in one package: MN6007 and MN6008 |
CN-1000, PS-25, PS-35, PS-55 |
| iG10770, iG10771 (shrinkDIP-64) | GE7 | "Tone Generator 7" | Interesting pre-FM soundsource, with sweet noisedrums and nice polyphony. iG10770 is found in PS-200 and has a color dot on the package (yellow, blue or green) that ranks the supply voltage: ldo output voltage has to be set accordingly to the dot color, so chips with different color marks are not interchangable right away. iG10771 is found everywhere else, and likely just has that supply voltage rank issue fixed. Massive 64-pin shrinkDIP. A bunch of pins are used for parallel DAC stuff, which is done on two resistor ladders (decoded 3-bits for exponent and 10-bit mantissa). Sadly it all gets mixed to one output (no separate ones for rhythm or something), so unless digital data gets captured and converted on our own board (and there is no frame/group sync, btw), everything is just a single channel. Contains comparator for battery-low checking, programmable metronome led driving, tempo pot ADC and timer for tempo IRQ generator, internal key frequency lookup table, and a single-loop wavetable ROM of sorts. Envelope and waveform is also set by just a preset variation (in chip registers) instead of true ADSR. By the way, PSR-40 is running on Z80 cpu typical system with no other custom chips than this one, so let's get on disassembling its firmware, as there is a lot to improve there. I've already disassembled it a bit, and figured out and commented some stuff, so a separate article for it is probably coming someday. | MK-100, PS-200, PSS-260, PSS-450, PSR-40 |
| iG10090 iG100900 | "BBD Modulator" | Interesting BBD
delay line chorus clock generator. Despite simple looks, contain two
sine lookup ROMs and two DACs, besides a VCO, dac output switches and
clock dividers. I'll probably kludge up some tiny detailed article about it, but here's in short: ROMs are two pieces of 16x 4bit, containing a quarter period of sinewave, so that contents effectively fold out into 64 steps of 5bit wave. Clock inpuot gets divided by 19 and it is then used for first sinewave rom lookup counter, then divided by 16 and for the second. Using the switches, output wave can then be an externally mixed sine - slow ("chorus"), fast (rotary speaker "tremolo") or both. VCO provides clock for BBD, typically: 38kHz @1.6Vctl, 58kHz @2.5Vctl, 125kHz @3.4Vctl. | CN-1000, MK-100, PS-35, PS-55, PSR-60 | |
| iG06110 |
IEF |
Quite possibly "Intelligence Electone Frontend" |
Chip for playcard system, that interfaces the magnetic head to the YM1020 |
PC-100 |
| iG06440 | ||||
| iG0606 | Power amplifier, LA4142 clone | |||
| iG00153 | VCO III | CS-30 | ||
| iG00156 | VCF | CS-30 | ||
| iG12032 also YA3256 |
MaskROM with program for i8085 cpu. Contains pattern, lin-log and preset instrument data as well. No waveforms. |
MK-100 |
||
| iG15504 |
||||
| iG15601 |
||||
| iG156010 |
MIX-3 |
"Mixer 3" |
Digital mixer |
Electone HE-5 |
Thanks also to the guys who contributed or sent in some info I missed: Christoph Kukulies, Claus, Toralf Lenz, And Now It Is Dark and many more!
Thanks again and sorry if I haven't yet replied to some of you, I just have so many emails, it takes months to dig through!