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Fractal Audio Systems MFC-101 Manual
14.4 Custom MIDI Message Primer
Creating custom MIDI messages for presets or IA Switches in the MFC-101 opens a world of possibilities "outside
the box." While any MIDI data can be stored and sent, the most common types will likely be additional program
changes, control changes, and system exclusive messages. The following primer will help you get started with
custom MIDI messages. You can also learn more at http://www.midi.org/techspecs/midimessages.php.
NOTE: Normally, hex values would be preceded by "0x" to indicate their not being standard numbers. Since this 0x
is not required by the MFC-101 custom MIDI fields, it is not shown in the examples below.
14.4.1 Program Change
Program change messages consist of two bytes. The first byte is 0xCn, where n is the MIDI channel number minus 1
in hexadecimal. MIDI channel to hexadecimal mapping is shown in the table below.
Channel
Hex
1
C0
2
C1
3
C2
4
C3
The second byte is the program number up to a maximum of 128, starting at 0, which makes the maximum value
127 (7F). Decimal to hexadecimal mapping is shown in the table below.
DATA BYTES: DECIMAL TO HEXIDECIMAL CONVERSION
Dec Hex
Dec Hex
0 00
16 10
1 01
17 11
2 02
18 12
3 03
19 13
4 04
20 14
5 05
21 15
6 06
22 16
7 07
23 17
8 08
24 18
9 09
25 19
10 0A
26 1A
11 0B
27 1B
12 0C
28 1C
13 0D
29 1D
14 0E
30 1E
15 0F
31 1F
So, for example, a program change message for Channel 1, Program 0 would be C0 00.
A program change message for Channel 8/Program 32 would be C7 20.
A program change message for Channel 16/Program 127 would be C7 7F.
NOTE: Remember to subtract 1 if you are using Display Offset +1 on your connected device(s).
To access programs above #128, you must first send a bank select control change message (CC#0).
Doc v2.15
Channel
Hex
5
C4
6
C5
7
C6
8
C7
Dec Hex
Dec Hex
32 20
48 30
33 21
49 31
34 22
50 32
35 23
51 33
36 24
52 34
37 25
53 35
38 26
54 36
39 27
55 37
40 28
56 38
41 29
57 39
42 2A
58 3A
43 2B
59 3B
44 2C
60 3C
45 2D
61 3D
46 2E
62 3E
47 2F
63 3F
Channel
Hex
9
C8
10
C9
11
CA
12
CB
Dec Hex
Dec Hex
64 40
80 50
65 41
81 51
66 42
82 52
67 43
83 53
68 44
84 54
69 45
85 55
70 46
86 56
71 47
87 57
72 48
88 58
73 49
89 59
74 4A
90 5A
75 4B
91 5B
76 4C
92 5C
77 4D
93 5D
78 4E
94 5E
79 4F
95 5F
APPENDIX
Channel
Hex
13
CC
14
CD
15
CE
16
CF
Dec Hex
Dec Hex
96 60
112 70
97 61
113 71
98 62
114 72
99 63
115 73
100 64
116 74
101 65
117 75
102 66
118 76
103 67
119 77
104 68
120 78
105 69
121 79
106 6A
122 7A
107 6B
123 7B
108 6C
124 7C
109 6D
125 7D
110 6E
126 7E
111 6F
127 7F
75
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