Boss Dr. Rhythm DR-770, Owner'S Manual

Page: 108 / 124

108
MIDI Implementation
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System Common Messages
Recognized only when the DR-770 is in stop and "SYNC" of the MIDI mode is set at MIDI.
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Song Position Pointer
Status Second Third
F2H llH mmH
mm,ll = Value: 00H,00H - 7FH,7FH (0 - 16383)
* Only in Song Play mode, the DR-770 receives Song Position Pointer, and locates the
position in the song.
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Song Select
Status Second
F3H ssH
ss = Song number: 00H - 63H (0 - 99)
* When received in Song mode, it changes the songs.
* Indicates correspondence between Song number and Song as follows.
Song number Song
0 1
1 2
: :
99 100
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System Realtime Message
Recognized only when “SYNC” of the MIDI mode is set at MIDI.
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Timing Clock
Status
F8H
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Start
Status
FAH
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Continue
Status
FBH
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Stop
Status
FCH
2. TRANSMITTED DATA
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Channel Voice Message
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Note Off
Status Second Third
9n kkH 00H
n = MIDI Channel No.: 0H - FH (ch.1 - ch.16)
kk = Note No.: 1BH - 51H (27 - 81)
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Note On
Status Second Third
9nH kkH vvH
n = MIDI Channel No.: 0H - FH (ch.1 - ch.16)
kk = Note No.: 1BH - 51H (27 - 81)
vv = Velocity: 01H - 7FH (1 - 127)
* Note number assigned to each instrument at current Drum kit is used.
* The data is transmitted by MIDI channel using the value set by MIDIch in MIDI mode.
* Gate time (the interval from “Note On” to “Note Off”) is about 50msec. It may be
shortened when same instrument is sounded repeatedly in short interval.
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Control Change
❍
Volume
Transmitted when RxVOL is set to 'ON' in MIDI mode.
Status Second Third
BnH 07H vvH
n = MIDI Channel No.: 0H - FH (ch.1 - ch.16)
vv = Volume: 00H - 7FH (0 - 127)
* If a value of RxVOL in the MIDI mode is changed, the DR-770 transmit this message by
the MIDI channel set by MIDIch in MIDI mode.
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Program Change
Transmitted when PRG is set to “ON” in the MIDI mode.
Status Second
CnH ppH
n = MIDI Channel No.: 0H - FH (ch.1 - ch.16)
pp = Program Number: 00H - 7FH (prog.1 - prog.128)
* The Program change will be transmitted on the MIDI channel set by “MIDIch” in the
MIDI mode if the Drum kit is changed.
* Indicates correspondence between Drum kit and Program number as follows.
Drum kit Program number
1 prog.1
2 prog.2
: :
128 prog.128
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System Exclusive Messages
Status Data Bytes Status
F0H iiH,ddH,...,eeH F7H
F0H: Status of System Exclusive Message
ii = ID number: 41 = Roland
7E = Universal Non-Realtime Message
7F = Universal Realtime Message
dd,...,ee = Data: 00H - 7FH (0 - 127)
F7H: EOX (End Of Exclusive)