Yamaha CBX-D5 Operating Manual page 73

*1 <ab>
DT status (MS 3 bits)
0-2: Reserved
3: DT status of encapsulated MIDI command
4: DT status of device specific messages
5 - 7: Reserved
*2 data bytes
The format and length vary depending on the DT status byte.
The first byte of the DT message is the channel number (It is usually from 0 to 3).
Several DT commands may be contained in one DT message.
The EOX (F7) command is used at the end of the DT message.
From a standpoint of error correction, we recommend inserting breaks in DT messages at 100 ms intervals.
DT command format (Table 1)
1: Encapsulated MIDI command (for details, see Table 2)
Status
Substatus
Databyte[0]
Databyte[1...]
2: Device specific messages
2.1 parameter dump
Status
Substatus
Databyte[0]
Databyte[1 - 2]
Databyte[3 - 4]
Databyte[5...]
CAUTION: When recording to a hard disk, one unit is used for multi-channel recording/
playback. For this reason, parameters are separated into Common and
Channel parameters. The parameter addresses used are as follows:
Channel parameter base address = h'0
Common parameter base address = h'2000
Sub status (LS 4 bits)
Sub status equals to MIDI status code
Substatus=0 parameter dump
Substatus=1 parameter request
(See Table 1 for DT command formats.)
3
MIDI status byte
channel
MIDI data bytes
4
0
channel
parameter address
byte count
data
Add-29 29 29