Dumb MIDI question

[Liverdrain]

Ahhh...my mistake. A thousand pardons.

On Tue, 20 Apr 1999 WeAreAs1 at aol.com wrote:

> 
> In a message dated 4/20/99 10:14:36 AM, wils0450 at tc.umn.edu wrote:
> 
> <<A lot of machines (particularly the Yamahas) these days allow you to
> assign the sysex ID number. Just something to keep in mind.>>
> 
> Actually, that user-specified byte is the "Unit ID" number, not the 
> "Manufacturer ID" number.  I'm sure these guys were referring to the 
> Manufacturer ID byte, not the Unit ID byte.  The Unit ID works kind of like a 
> "MIDI Channel ID" for sysex messages.  It allows you connect several 
> different modules of the same type and manufacturer to a common MIDI bus (for 
> example, several Roland JV-1080's, or several Yamaha MU-100r modules, etc.) 
> and have them be able to selectively respond (or not respond) to sysex 
> messages with a certain Unit ID.  
> 
> The old Roland MKS-80 Super Jupiter had an optional programmer unit, the 
> MPG-80, which allowed you to edit your patches with knobs and sliders.  The 
> MPG-80 transmitted all of your moves to the MKS-80 via sysex.  You could hook 
> up as many as sixteen MKS-80 modules to one MPG-80, and by setting each one 
> to a different Unit ID, you could easily route the programmer data to the one 
> you wanted, simply by changing the transmitted Unit ID at the programmer (it 
> had a 16-position rotary switch for this).  Some of the other Roland hardware 
> programmer units worked this way, as well.
> 
> Except for the small handful of user-programmable hardware MIDI controller 
> units (such as the EXCELLENT Peavey PC-1600 and the Kenton Control Freak) 
> there are no commercial products that allow you to assign a new Manufacturer 
> ID number or Model ID number within sysex messages.  (FYI, the Model ID is 
> the byte that specifies which model the unit is, for example, a Yamaha DX7 
> vs. a Yamaha MU-100r)  Heck, even the PC-1600 doesn't let you change *its 
> own* Manufacturer ID, within its own bulk sysex dumps - I mean, some things 
> are still sacred!
> 
> Michael Bacich
> 

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no spiritual surrender...
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Michael Whitefoot