[wdmaudiodev] usbaudio.sys & midi sysex problems

  • From: Nick Dowell <nick@xxxxxxxxxxxxx>
  • To: wdmaudiodev@xxxxxxxxxxxxx
  • Date: Mon, 26 Sep 2005 16:07:23 +0100

Has anyone had any experience, good or bad, with sending large sysex messages using usbaudio.sys - based devices?

We have been developing some new class-compliant midi devices, which work fine with the Mac OS X driver, as well as the linux driver, but under Windows XP sending more than a small amount of sysex data results in the data getting corrupted. This normally appears as extra bytes being inserted into the stream, or bytes being swapped around.

Are there any known problems related to this?

Is it possible to have robust sysex output using this driver?

Regards,
Nick
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