Boss Audio Systems BR-900CD owner manual 217

MIDI Implementation

■System Exclusive Message

Status	Data Bytes	Status
F0H	iiH,ddH,..., eeH	F7H
Byte	Description
F0H	Status of Exclusive Message
iiH	ID Number
	7EH Universal Non Realtime Message
	7FH Universal Realtime Message
ddH	Data: 00H - 7FH (0-127)
:	:
eeH	Data
F7H	EOX (End of Exclusive Message)

*The BR-900CD can transmit and receive Universal System Exclusive messages.

●Universal System Exclusive Message

❍MIDI Machine Control Commands

Status	Data Bytes	Status
F0H	7FH, Dev, 06H, aaH,..., bbH	F7H
Byte	Description
F0H	Status of Exclusive Message
7FH	Universal System Exclusive Message Realtime Header
Dev	Device ID (7FH)
06H	MMC Command Message
aaH	Command
:	:
bbH	Command
F7H	EOX (End of Exclusive Message)

2. MIDI Machine Control

■MIDI Machine Control Command Reference

●STOP (MCS)

Status	Data Bytes	Status
F0H	7FH, Dev, 06H, 01H	F7H
Byte	Description
F0H	Status of Exclusive Message
7FH	Universal System Exclusive Message Realtime Header
Dev	Device ID (7FH)
06H	MMC Command Message
01H	STOP (MCS)
F7H	EOX (End of Exclusive Message)

*If the transport switch [STOP] was pressed, the BR-900CD transmits this message.

●DEFERRED PLAY (MCS)

Status	Data Bytes	Status
F0H	7FH, Dev, 06H, 03H	F7H
Byte	Description
F0H	Status of Exclusive Message
7FH	Universal System Exclusive Message Realtime Header
Dev	Device ID (7FH)
06H	MMC Command Message
03H	DEFERRED PLAY (MCS)
F7H	EOX (End of Exclusive Message)

*If the transport switch [PLAY] was pressed, the BR-900CD transmits this message.

*see ‘2. MIDI Machine Control’ section

●MIDI Time Code Commands

❍Full Message

Basic operation of quarter frame messages will be handled.

Status	Data Bytes		Status
F0H	7FH,Dev,01H, 01H, hrH, mnH, scH, frH		F7H
Byte	Description
F0H	Status of Exclusive Message
7FH	Universal System Exclusive Message Realtime Header
Dev	Device ID (7FH)
01H	sub-ID #1 (MIDI Time Code)
01H	sub-ID #2 (MIDI Full Message)
hrH	Hours and Type 0 yy zzzzz
	yy type
	00	= 24 Frames/sec
	01	= 25 Frames/sec
	10	= 30 Frames/sec (Drop Format)
	11	= 30 Frames/sec (Non Drop Format)
	zzzzz hours (00–23)
mnH	Minutes (00–59)
mnH	Seconds (00–59)
frH	Frames (00–29)
F7H	EOX (End of Exclusive Message)

*When you change the song position, the device ID will be transmitted as 7FH.

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About Device ID

Exclusive messages are not assigned to any particular MIDI channel. Instead, they have their own special control parameter called device ID. The Roland exclusive messages use device IDs to specify various devices.

BR-900CD transmits 7FH as the device ID.

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●RECORD STROBE

Status	Data Bytes	Status
F0H	7FH, Dev, 06H, 06H	F7H
Byte	Description
F0H	Status of Exclusive Message
7FH	Universal System Exclusive Message Realtime Header
Dev	Device ID (7FH)
06H	MMC Command Message
06H	RECORD STROBE
F7H	EOX (End of Exclusive Message)

*Transmitted when recording to the audio tracks begins.

●RECORD EXIT

Status	Data Bytes	Status
F0H	7FH, Dev, 06H, 07H	F7H
Byte	Description
F0H	Status of Exclusive Message
7FH	Universal System Exclusive Message Realtime Header
Dev	Device ID (7FH)
06H	MMC Command Message
07H	RECORD EXIT
F7H	EOX (End of Exclusive Message)

*Transmitted when recording to the audio tracks ends.

●MMC RESET

Status	Data Bytes	Status
F0H	7FH, Dev, 06H, 0DH	F7H
Byte	Description
F0H	Status of Exclusive Message
7FH	Universal System Exclusive Message Realtime Header
Dev	Device ID (7FH)
06H	MMC Command Message
0DH	MMC RESET
F7H	EOX (End of Exclusive Message)

Section

*When powered on the BR-900CD transmits this message.

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