MIDI MMC Messages & Writing Drivers

[mixer]

Hi Joe and welcome! No direct answer but maybe some useful links…the discussion on this issue mentions both the 3-byte limit for MIDI messages and the fact that Rack ignored System Exclusive MIDI messages (this was June 2019):

https://github.com/VCVRack/Rack/issues/1323

Also possibly related:

MIDI sync with VCV Rack as master - a demo

This is a “little” writeup on using MIDI sync/MIDI clock with VCV Rack and external gear. MIDI sync with VCV Rack and other gear is a frequent topic that’s brought up, and as I just purchased an Arturia Keystep I’ve had a chance to get some practical experience, with good results, that I thought I’d share for the benefit of you all. As Omri Cohen and many other people have observed, MIDI sync with Rack as slave and external gear as master is… not great. My observation is that it’s completely u…

https://github.com/VCVRack/Rack/issues/1654

I also have an Arturia Drumbrute in my setup that I’d like to use as main clock, so I’m interested - and available should you need testers at some point.