Roland TR-808 - 4.2. Common System Messages

TR
TR TR
TR-
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-808 MIDI Interface
808 MIDI Interface808 MIDI Interface
808 MIDI Interface Model 8
Model 8Model 8
Model 8-
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-448 ver. 2.0
448 ver. 2.0448 ver. 2.0
448 ver. 2.0
9
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Table 3 – Numbers of tone generators
Number Tone generator
dec hex Name Symbol
0 00 None – Note On command is ignored -
1 01 BASS DRUM BD
2 02 SNARE DRUM SD
3 03 LOW TOM / LOW CONGA LT / LC
4 04 MID TOM / MID CONGA MT / MC
5 05 HIGH TOM / HIGH CONGA HT / HC
6 06 RIM SHOT / CLAVES RS / CL
7 07 HAND CLAP / MARACAS CP / MA
8 08 COW BELL CB
9 09 CYMBAL CY
10 0A OPEN HI-HAT OH
11 0B CLOSED HI-HAT CH
Example 1 : MIDI channel changed to 2 and indication of received MIDI commands enabled
Start SysEx = F0h
Mfr ID = 00h 20h 21h
Device ID = 7Fh
Model ID = 61h
Command = 20h
Address = 4Fh → system parameters
Data 1 = 01h → MIDI channel No. 1
Data 2 = 01h → indication turned on
Data 3 = 00h → not used byte
Checksum = 2Eh → 61h + 20h + 4Fh + 01h + 01h + 00h + 2Eh = 00h
End SysEx = F7h
Example 2 : Tone generator COW BELL assigned to MIDI note No. 13, dynamics turned off, middle
output level of generator selected
Start SysEx = F0h
Mfr ID = 00h 20h 21h
Device ID = 7Fh
Model ID = 61h
Command = 20h
Address = 01h → definition of MIDI note No.13
Data 1 = 08h → tone generator COW BELL assigned
Data 2 = 40h → dynamics off, middle level selected (Level Slope Min)
Data 3 = 40h → dynamics off, middle level selected (Level Slope Max)
Checksum = 76h → 61h + 20h + 01h + 08h + 40h + 40h + 76h = 00h
End SysEx = F7h