Dave Smith Instruments MOPHO X4 - Manual (Page 64)

58
Program Edit Buffer Data Dump
Status Description
1111 0000 System Exclusive (SysEx)
0000 0001 DSI ID
0010 1001 Mopho x4 ID
0000 0011 Edit Buffer Data
0vvv vvvv 256 bytes expanded to 293 MIDI bytes in “packed MS bit” format (see
page 58.)
1111 0111 End of Exclusive (EOX)
Global Parameters Data Dump
Status Description
1111 0000 System Exclusive (SysEx)
0000 0001 DSI ID
0010 1001 Mopho x4 ID
0000 1111 Main Parameter Data
0vvv vvvv 50 nibbles (LS then MS) for 25 Global parameters. Global Parameters
are listed starting on page 47.
1111 0111 End of Exclusive (EOX)
Note: The Global Parameters Data Dump is not recognized when received; it is
only transmitted when requested. NRPN messages are used to change Globals.
Packed Data Format
Data is packed in 8 byte “packets”, with the MS bit stripped from 7 parameter
bytes, and packed into an eighth byte, which is sent at the start of the 8 byte
packet.
Example:
Input Data Packed MIDI data
1 A7 A6 A5 A4 A3 A2 A1 A0 1 00 G7 F7 E7 D7 C7 B7 A7
2 B7 B6 B5 B4 B3 B2 B1 B0 2 00 A6 A5 A4 A3 A2 A1 A0
3 C7 C6 C5 C4 C3 C2 C1 C0 3 00 B6 B5 B4 B3 B2 B1 B0
4 D7 D6 D5 D4 D3 D2 D1 D0 4 00 C6 C5 C4 C3 C2 C1 C0
5 E7 E6 E5 E4 E3 E2 E1 E0 5 00 D6 D5 D4 D3 D2 D1 D0
6 F7 F6 F5 F4 F3 F2 F1 F0 6 00 E6 E5 E4 E3 E2 E1 E0
7 G7 G6 G5 G4 G3 G2 G1 G0 7 00 F6 F5 F4 F3 F2 F1 F0
8 00 G6 G5 G4 G3 G2 G1 G0
This explains why it takes 293 MIDI bytes to transmit 256 Program data bytes.