Now you should look up in the MIDI-Implementation Chart if this is supported by the device: there’s a file called “sid_cc_implementation_chart.txt” inside the sid directory that contains the entry:
[tt] 123 | 7Bh | Assign Wavetable Parameter #3 to Controller | 0: off | 0[/tt]
so ALL NOTES OFF is not supported with the SID application.
it could be interessting how tk handle this in his SEQ app… if i press stop all channels are turned off (seems without much effort) .. the MBSID device too.
you can try to send note OFF messages for all note, maybe with a loop that increment the note number until all are Off…I think it’s what is done in the seq, but only for notes who are enabled…
And yes, I meant that file. But mbseqv3 isn’t released yet, so you got to try. A midi-implementation chart is normally done with all the rest of the docs once a version has a first stable release.