Ken,
Apologies for the error in my previous note regarding the
x in F0 42 3x 1......... of your sysex essage.
As Juca said, 0 is effectively channel 1, so it would go from 30,
up to 37 which would be channel 8, dependant on which channel you wanted
to change.
I found part of an M1 manual, and the Midi information looks better
than I have seen in a lot of manuals, and I beleive the T3 is based on an M1, so
the midi implementation is probably similar. Unfortunately the copy I found is not
complete, so....
So, some more information.........
The 4th byte of information is either 26, which is a Data load complete message,
or 19 which is the Keyboard family code for the M1/T1/T2/T3 keyboads.
The 5th Byte 4E is the mode change request.
then I'm guessing, but........
I think the 6th and 7th bytes do the change, and it looks to me as though it has to
select the bank, then toggle it to change, thus needing two messages.
Hope this helps,
Colin