DigiTech Midi Implementation Manual page 122

PROGRAM_NUMBER = MIDI_TO_PROGRAM[received midi program number]
Translation table of GSP21 program number to transmitted midi program number
(PROGRAM_TO_MIDI)
This 128 byte table is used to translate GSP21 program numbers to
transmitted midi program numbers. Programs 129 through 192 on the GSP21 PRO
do not send a midi program change. The GSP21 program number is used as an
index into the PROGRAM_TO_MIDI table. The byte at that index is the program
number to transmit. Bytes in this table have the value of 0-127.
Xmitted midi program number = PROGRAM_TO_MIDI[PROGRAM_NUMBER]
LCD contrast value
0 (00h) LCD Contrast 1
16 (10h) LCD Contrast 2
32 (20h) LCD Contrast 3
48 (30h) LCD Contrast 4
64 (40h) LCD Contrast 5
80 (50h) LCD Contrast 6
96 (60h) LCD Contrast 7
112 (70h) LCD Contrast 8
128 (80h) LCD Contrast 9
144 (90h) LCD Contrast 10
10 Foot controller set definitions
Each set definition is 10 bytes long. (10 * 10 = 100 bytes). Bytes 1-5 of
the set definition are used in 5 patch mode, bytes 1-10 are used in 10 patch
mode. Bytes 1-9 are patches 1-9, Byte 10 is patch 0.
Values of set definition bytes: