Casio MZ-X300 - Casio General System Exclusive; Format; Declared Variable Length of Category ID, Sub Category ID and Parameter ID

15 Casio General System Exclusive
15.1 Format
Message Format: F0H 44H 7EH 7FH iiH ccH ... ssH ... ppH ... ddH ... F7H
ii: Device ID (0x00...0x7F)
cc ...: Category ID
ss ...: Sub Category ID
pp ...: Parameter ID
dd ...: Data
15.2 Declared Variable Length of Category ID, Sub Category ID and Pa-
rameter ID
Category ID(cc...),Sub Category ID(ss...) and Parameter ID(pp...) is declared variable length.
However, because of System Exclusive, sixth bit instead of seventh bit is a flag representing continue
to the next byte.
For example,
In case of
F0 44 7E 7F ii 00 01 41 02 dd ... F7
represents
Category ID = 0x00, Sub Category ID =0x01, Parameter ID = (0x40 * 1) + 0x02 = 0x42
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