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PCM 90 MIDI Implementation Details
Lexicon
0x14 Knob Message
Host to PCM 90 only. (In SysEx Automation mode, the PCM 90 sends parameter values, not knob
messages.) Knobs operate within the current context of the user interface. For example, in REG mode,
the Adjust Knob is a soft knob. In Edit mode, it adjusts the onscreen parameter. This message is only useful
for a remote controller.
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 08 PCM 90 ID
4 0iii iiii Device ID
5 0x14 Knob Code
6 0n Knob ID: 0=Select Knob; 1=Adjust Knob
7 0n Least-significant
nibble of 2’s
complement knob
delta (16 bits) For example: 0xffff=-1 (counterclockwise); 0x0001=+1 (clock-
wise)
8 0n Next nibble
9 0n Next nibble
10 0n Most-significant nibble
11 0xF7 End of SysEx
0x15 Program Change Dump
Bidirectional. This is the method used in SysEx Automation to send Program Change messages. It may
be used in other cases, although the number of bytes is larger than a standard MIDI Program Change
message. The current MIDI Program Change mode selection (mapped, chained, off, etc) is ignored.
Byte # Byte Value Description Notes
1 F0 SysEx ID
2 06 Lexicon ID
3 08 PCM 90 ID
4 0iii iiii Device ID
5 0x15 Prog Change Code
6 0iii iiii Bank
7 0iii iiii Program 0- 49
8 0xF7 End of SysEx
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