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6
MIDI Implementation
❍
Data set 1 (DT1)
This is the message that actually performs data transmission, and is used when you wish to
transmit the data.
Status
Data byte Status
F0H 41H, dev, 00H, 00H, 39H, 12H, aaH, bbH, F7H
ccH, ddH, eeH, ... ffH, sum
Byte Explanation
F0H Exclusive status
41H ID number (Roland)
dev Device ID (dev: 10H, 7FH)
00H Model ID #1 (V-Piano Grand (GP-7))
00H Model ID #2 (V-Piano Grand (GP-7))
39H Model ID #3 (V-Piano Grand (GP-7))
12H Command ID (DT1)
aaH Address MSB: upper byte of the starting address of the data to be sent
bbH Address: upper middle byte of the starting address of the data to be
sent
ccH Address:lower middle byte of the starting address of the data to be
sent
ddH Address LSB: lower byte of the starting address of the data to be sent.
eeH Data: the actual data to be sent. Multiple bytes of data are transmitted
in order starting from the address.
: :
ffH Data
sum Checksum
F7H EOX (End Of Exclusive)
* The amount of data that can be transmitted at one time depends on the type of data, and
data will be transmitted from the specified starting address and size. Refer to the address
and size given in
“Parameter Address Map”
(p. 7).
* Data larger than 256 bytes will be divided into packets of 256 bytes or less, and each
packet will be sent at an interval of about 20 ms.
* Regarding the checksum, please refer to p. 12.
2. Data Transmission
■
Channel Voice Messages
●
Note off
Status
2nd byte 3rd byte
8nH kkH vvH
n = MIDI channel number: 0H - FH (ch.1 - 16)
kk = note number: 00H - 7FH (0 - 127)
vv = note of velocity: 00H - 7FH (0 - 127)
●
Note on
Status 2nd byte 3rd byte
9nH kkH vvH
n = MIDI channel number: 0H - FH (ch.1 - 16)
kk = note number: 00H - 7FH (0 - 127)
vv = note on velocity: 01H - 7FH (1 - 127)
●
Control Change
❍
Bank Select (Controller number 0, 32)
Status
2nd byte 3rd byte
BnH 00H mmH
BnH 20H llH
n = MIDI channel number: 0H - FH (ch.1 - 16)
mm, ll = Bank number: 00 00H - 7F 7FH (bank.1 - bank.16384)
❍
Expression (Controller number 11)
Status 2nd byte 3rd byte
BnH 0BH vvH
n = MIDI channel number: 0H - FH (ch.1 - 16)
vv = Expression: 00H - 7FH (0 - 127)
❍
Hold 1 (Controller number 64)
Status
2nd byte 3rd byte
BnH 40H vvH
n = MIDI channel number: 0H - FH (ch.1 - 16)
vv = Control value: 00H - 7FH (0 - 127)
* These messages are transmitted when Damper pedal is operated.
❍
Sostenuto (Controller number 66)
Status
2nd byte 3rd byte
BnH 42H vvH
n = MIDI channel number: 0H - FH (ch.1 - 16)
vv = Control value: 00H - 7FH (0 - 127)
❍
Soft (Controller number 67)
Status 2nd byte 3rd byte
BnH 43H vvH
n = MIDI channel number: 0H - FH (ch.1 - 16)
vv = Control value: 00H - 7FH (0 - 127)
●
Program Change
Status
2nd byte
CnH ppH
n = MIDI channel number: 0H - FH (ch.1 - 16)
pp = Program number: 00H - 7FH (prog.1 - prog.128)
■
System Realtime Messages
●
Timing Clock
Status
F8H
●
Start
Status
FAH
●
Stop
Status
FCH
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