Hi,
as you see it's some info from Wibas mb6582 building files.
At first you can print it for the better understanding for the matrix structure, I think.
http://wiki.midibox.org/lib/exe/fetch.php?media=mb-6582:mb-6582_cs_dout_wiring.pdf
http://wiki.midibox.org/lib/exe/fetch.php?media=mb-6582:mb-6582_cs_din_wiring.pdf
When I built my MB sid custom CS, it helps a lot.
Regards,
Janis