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How do I interpret this? From the Roland SC-55, SC-88Pro, and SC-8850 manuals, some form of this chart is present.
n is the "block" number, which translates to
0 = CH 10
1 = CH 1
...
9 = CH 9
A = CH 11
...
F = CH 16
It shows
00 at n!=0
01 at n=0
Does this mean that channel 10 (n=0) CAN NOT be assigned as a non-percussion part? I am testing a file with the SYSEX command to set CH 10 to non-percussion, but my software is still playing it as percussion.
Posted : 22/03/2026 7:21 pm
Topic starter
Figured it out. CH 10 CAN be non-percussion. My code for writing the SYSEX data for CH 10 was off by 1, so it was setting CH 9 to non-percussion instead of CH 10. Once I fixed it, CH 10 is now playing an instrument rather than a drum part.
Posted : 22/03/2026 7:41 pm
To clarify further: In those Roland System Exclusive address tables, the right-most column shows the default values -- see the header above the columns at the beginning of the table. So in your picture, it is saying the blocks other than 0 (n!=0, the channels other than 10) default to being a non-rhythm part (value 00 for OFF), and block 0 (n=0, channel 10) defaults to a map 1 rhythm part (value 01 for MAP1).
Posted : 23/03/2026 10:33 am
Jason reacted