Dump; Format Of External Sound Eprom - Spectral Audio SYNTRACK Owner's Manual

The controller output numbers of the controllers are specified in the MIDI Implementation Chart
below.

1.7.1 Dump

The Dump is used to transfer the contents of the user memory to another Syntrack or a computer
(back-up copy, etc.).
Each individual byte of the user memory is transferred as an individual Sysex message. Prior to
transferring the value of the memory location the number of the memory location concerned is
transferred, as a result of which it is also possible to receive only a part of the memory (e.g.
program 30 only). The transmission process always involves the complete contents of the
memory, however. The memory capacity is 512 bytes, which means that a complete dump
contains 512 Sysex messages. A description of the individual memory locations would go beyond
the scope of this manual. On request, we would be pleased to provide you with this information,
however.
Be careful with changing Dump data. Because of writing received sysexdata directly to the
memory, it is possible to set up the midi channel to 25, for example. The Syntrack will then use
the lower nibble (25 mod 16 = 9) as receiving channel. For reseting back to factory settings, the
Syntrack has to receive original sysex data. You may use our factory sysex data from our
homepage (http://www.spectralaudio.ch).
To transmit a dump: Set the Syntrack to Set-up mode and then press the Wave Select button.
The transfer operation takes approx. 12 sec.
To receive a dump: The Syntrack must be in Standard mode. Transmit the Sysex character
strings to MIDI In. Important: An interval of at least 15 milliseconds is essential between the
individual character strings.
Dump Sysex character string (hex):
F0 (Sysex)
00 (ID of Spectral Audio)
20
6A
01 (Model)
0x (x= bit 7-9 of the memory location number)
xx (xx= bit 0-6 of the memory location number)
0x (x= bit 7 of the value of the memory location)
xx (xx= bit 0-6 of the value of the memory location)
F7 (End Sys Ex)

1.8 Format of external Sound EPROM

If you do like to make your own Wavetable Sound ERPOM, this is the format: 8 Bit resolution, 256
Byte long. This wave is once repeated each period starting at the lowest address.. Please note
that due to this it is not possible to create frequencies below the frequency specified for the note.
Adr.
0 .. 255 Sound 00
256 .. 511 Sound 01
..
25344 .. 25599
Recommended ERPOM type: 27C256.
Syntrack
Sound 99
Synthesizer
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