Lexicon PCM90 and sysex


    May 18 2008 | 4:17 pm
    I am trying ot build an Editor for my PCM90.
    The Lexicon's documentation about sysex is very deep but I can't find the right way to send a dump request to the PCM.
    I managed to use the remote mode by spying the sysex sent though.
    If anyone did this before please let me know how you achieve this.
    Thanks a lot.

    • May 18 2008 | 8:03 pm
      > I am trying ot build an Editor for my PCM90.
      > The Lexicon's documentation about sysex is very deep but I can't find the right way to send a dump request to the PCM.
      The documentation mentions:
      MIDI Implementation Details, including System Exclusive documentation, are available to assist experienced programmers in developing software for use with the PCM 90. These can be obtained directly from Lexicon. Request: PCM 90 MIDI Implementation Details.
      Do you have these implementation details? Typically dump request are done through some handshaking communication. Eg, you send a string to the device with such a request, device will say ready?, you say yes!, device says here it comes, ... more?, you say yes. And so on. But this is anyhow not mentioned in the regular documentation.
      -
      johan
    • May 18 2008 | 8:22 pm
      Quote: jvkr wrote on Sun, 18 May 2008 22:03
      >
      > Do you have these implementation details? Typically dump request are done through some handshaking communication. Eg, you send a string to the device with such a request, device will say ready?, you say yes!, device says here it comes, ... more?, you say yes. And so on. But this is anyhow not mentioned in the regular documentation.
      >
      > -
      > johan
      ----------------------------------------------------
      hello Johan
      yes I have the full documentation, I found the request scheme chapter, but each time I try to build the "request" message I got "sysex error" on the PCM display, if I send back a sysex message sent by PCM via MAX it works.
      I could just use this technic but I need to get a complete dump of the loaded effect to display its state in my editor first.
      I will do more empirical tries , maybe I will find the right string to send.
      thanks again
      Olivier