Ok, so I had this desire to get back into MIDI after 35+ years starting with Roland Juno-60 to Juno-106 migration.
These were pre General Midi and I helped write an editor librarian for a mainframe computer connected by serial to midi
box I had designed and built.
Later in the 1980's I met a Kurzweil employee who help me get a piano module upgraded to the top of the line
KX-1000 Pro just before the Waltham warehouse was closed after sale of the company.
I found another editor librarian for DOS (Kurle) and a Librarian for Windows (Kurlwin) which was able to get it cryptically
working with Rosegarden on Ubuntu 10 years ago and more in 2017.
This year 2018 I got email from Roland and bought first General MIDI device , the Go:Keys 61.
It also has GM2 so I joined Midi Association here.
I flashed the January 2018 FIRMWARE Ver1.21 to use it with Scratch programming language but the Tech support could not provide the
MIDI Implementation documents for the Go:Keys like that I had used on the Roland JUNO-106 years earlier.
open Source to the Scratch Extensions could help determine some parts of the Midi implementation.
After asking the Kurle developer what it took to develop on system exclusive message dumps I decided to ask here for help.
Anyone here know where to turn next ?