Roland Corporation A-37 User's Manual

A-37 MIDI Implementation

1 – RECEIVE DATA

All recognized MIDI messages from MIDI-IN are retransmitted on MIDI-OUT-A, with no effect on internal
A-37 performance, except for the A-37 Patch SYS-EX messages that are used to modify the A-37 parameter
area.
Refer to “System exclusive message” description.

2 – TRANSMIT DATA

Channel voice Message

g Note off

Status Second Third

9nH kkH 00H

n=MIDI channel number: 0H – FH (ch.1 – ch.16)
kk=Note number: 00H –7FH (0 – 127)
00H = Velocity (0)

g Note on

Status Second Third

9nH kkH vvH

n=MIDI channel number: 0H – FH (ch.1 – ch.16)
kk=Note number: 00H –7FH (0 – 127)
vv=Velocity 01H – 7FH (1 – 127)

g Control Change

Status Second Third

BnH ccH vvH

n=MIDI channel number: 0H – FH (ch.1 – ch.16)
cc=Control change number: 00H –7FH (0 – 127)
vv= Control change value 00H – 7FH (0 – 127)

g Program Change

Status Second

CnH ppH

n=MIDI channel number: 0H – FH (ch.1 – ch.16)
pp=program change number: 00H –7FH ( prog. 1 – prog.128)

g Channel After Touch

Status Second

DnH vvH

n=MIDI channel number: 0H – FH (ch.1 – ch.16)
vv=value: 00H –7FH (0 – 127)

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g Pitch Bend Change

Status Second Third

EnH llH mmH

n=MIDI channel number: 0H – FH (ch.1 – ch.16)
ll, mm=value: 00H, 00H – 7FH, 7FH ( -8192 ~ +8191)

g System Realtime Message

i Active Sensing

Status
FEH

* This will be transmitted constantly at intervals of approximately 250ms

i Timing Clock

Status
F8H

i Start

Status
FAH

i Stop

Status
FCH

System Exclusive Message

g Data Transfer

A-37 transmit “Data set 1 (DT1)” message when Data Dump Function is activated

g Data set 1 (DT1) (12H)

Status Data byte Status

F0H 41H, 10H, 00H, 02H, 12H, aaH, bbH, ccH, ddH, ....eeH, sum, F7H

Byte Description
F0H Exclusive status
41H Manufacturer’s ID (Roland)
10H Device ID (dev => 10H)
00H Model ID (MSB) (Model A-37)
02H Model ID (LSB)
12H Command ID (DT1)

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