Re: Issue receiving sysex dump from DX7

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On 18/11/2019 16:02, andy2no via Groups.Io wrote:
> I've seen MIDI-OX mess up handling of sysex dumps - from my Behringer 
> DeepMind 6.  Bome's SendSX worked perfectly.

That's why I tried various programs.

> I seem to have read somewhere that Windows MIDI drivers expand 
> "running status" - so that software receives entire self contained 
> MIDI messages instead of a status message followed by a stream of 
> values for it.  If it was receiving a sysex dump but didn't see the 
> header, for example, it could then mangle the data considerably, 
> thinking some of it was running status messages, and adding the extra 
> status bytes.

Possible... Let's see if I can get any hardware to directly read and 
display the data on the MIDI cables as raw serial input before a 
solution is found.


> I've had success using JSynthLib with my TX7, so I'd try that, to see 
> if it can receive a dump from your DX7:

I'll try that when I come home. But I also do have a TX7 and there is no 
communication problem with that one at all, in any of the programs I 
tried. Okay, I haven't sent sysex via MIDI-Ox to it though. But the TX7 
can send and receive banks without any issue.

> Maybe just connect the DX7 direct to the PC via your no name USB-MIDI 
> cable?  I'm not familiar with the MOTU but it sounds complicated 
> enough to be part of the problem.

Yes, but as I already mentioned in my first post "It's the same if I 
plug the interfaces directly into the DX7 (the MOTU helps sometimes, my 
no-name cable for example has issues talking to a CS1x directly, but all 
is fine if the MOTU relays the data)."

So, yes, of course, always trying to remove as many variables from the 
equation as possible.

Cheers, Florian


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