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Lexicon
PCM 90 MIDI Implementation Details
Appendix D: MIDI Inquiry Message
The MIDI specification defines a global message that allows a host device to determine what sorts of
devices are connected. This message is interpreted by the PCM 90 as follows:
Inquiry message from host to PCM 90:
Byte # Byte Value Description Notes
1 0xf0 SysEx ID
2 0x7e Universal
non-realtime
header
3 0iii iiii Channel Treated as the SysEx device ID assigned to the PCM 90
4 0x06 General information
5 0x01 Device inquiry
6 0xF7 EOX
Response from PCM 90:
Byte # Byte Value Description Notes
1 0xf0 SysEx IDr
2 0x7e Universal non-realtime
header
3 0iii iiii Channel. SysEx device
ID assigned to the PCM 90.
4 0x06 General information
5 0x02 Device ID message
6 0x06 Lexicon SysEx ID
7 0x00 Family code LSB
8 0x00 Family code MSB
9 0x08 Family member code LSB This is the PCM 90 SysEx product code (byte 3 of a standard
SysEx message)
10 0x00 Family member code MSB
11 0iii iiii Major software revision # See System Configuration Response.
12 0iii iiii Minor software revision #
13 0iii iiii Release code For normal released code, this byte is 0. Any other value
indicates test code that is not under general release
14 0x00 Unused revision data.
15 0xf7 EOX