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Yamaha SysEx Headers


 

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Thanks for this info, but still it didn’t explain the meaning of LM.

Few additions to your info:
- header is not indicating the instrument. It is header of SysEx memory dump. So some relative instruments can use the same numbers.

- header is not for one instrument, but for data type. One and the same instrument can have different numbers for Voices, Performances, Multi, Drumset etc. etc. Opposite - different instruments can use the same numbers.

- four numbers are not the last 4 characters of header, it’s followed by two other letters designated type

- not always there are 4 numbers, I have found also 8A21, 8A26, 8A27

- not always there are numbers - sometimes they are replaced by letters (like DX7 II D/FD Fractional Scaling or Microtune)

- there can be added one number at the end if instrument has more data blocks of the same type (like TX81z System or Microtune)?

- not always there is LM__ - I have found instruments which have SK__ or PK__

Yamaha has been using this system around between 1986 - 1998, not on all machines. There were also other systems used in their instruments, sometimes even mixed in one instrument.

If you are interested in, here are some header numbers from my gear, and few others:

TX802 - 8952
TX81z - 8986 (error in the manual?), 8976
V50 - 8976, 8073, 8023
VL1 - 0117, 8101
WT11 - 8976, 8023, 8053
TG500 - 0065, 0066, 0040
SY85 - 0065, 0040
TG77 - 8101, 8104
SY77 - 8101
SY99 - 0040, 8101
TG33 - 0012, PK__2203
SY22/35 - PK__2203?
TG55 - 8103
EOS B500 - 0010
DX11 - 8976, 8023
W5/7 - 0147
TQ5, YS100, YS200 - 8023, 8976, 8036
P500 - SK__2356
RM50 - 0087, 0017
DX7 II D/FD - 8973
MEP4 - 8969__
MFC10 - 0271
DMP9-8 - 8A27
DMP9-16 - 8A26
FX900 - 8724
REV5 - 8345
DMP7 - 8344
DMP11 - 8387
MSS1 - 8978
SPX900 - 8636
SPX990 - 8A21
SPX1000 - 8378

You can do your own research from Owner’s and Service Manuals...

Daniel Forro


On Aug 25, 2017, at 19:37, jojolp90@... [YamahaDX] <YamahaDX@...> wrote:

Mystory solved about the LM strings. From a French book on the MIDI:

"Sauf exception, les quatre derniers octets de cet en-tête identifient en ASCII le numéro du produit (8387 pour la DMP11, 8976 pour le TX81Z, etc.), tandis que les quatre premiers, toujours en ASCII, correspondent aux lettres "LM" (pour LM Division, Nippon Gakki Ltd, participant au développement logiciel des instruments) suivies de deux espaces."

Translated in english:

"Otherwise noted, the 4 last bytes of the header [of a sysex dump] matches in ASCII the product number (ie. 8387 for a DMP11, 8976 for a TX81Z, etc...), while the first 4 bytes, still in ASCII, are made from the letters "LM" (for LM Division, Nippon Gakki Ltd, one of the protagonists involved into the instrument's software R&D [firmware]) following by two spaces."

So 8950 will be the product number of the TF1, I'm currently looking for a list of all the instruments ID if it exists.

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