[sdiy] MIDI merging info requested - update

[Byron G. Jacquot]

> So, what commands can implement running status?
> I know Key up, Key down, and Pitch wheel can.
> 
> What about ...Control change, Program change (doesn't make sense),
> Polyphonic Aftertouch, and Channel Aftertouch.  I'm need to decide if
> I have to implement the same code for these commands?

I would write it so that any status byte can be running.  I know some 
of them may not make much sense, but they could still possibly be 
sent running.  For example, with nothing else playing, turning a 
patch select dial could send a series of program change 
messages...after the first one, they could use running status.

I think the common practise is to check the MSB of each received 
byte, and if it's set, then you've got a realtime or status byte.  
Then you shouldn't miss any possible running status beneath that.

Byron Jacquot