Midi Data Format - Yamaha M7CL Owner's Manual

This section explains the format of the data that the M7CL is able to understand, send, and
receive.
1 CHANNEL MESSAGE
1.1 NOTE OFF
Reception
These messages are echoed to MIDI OUT if [OTHER ECHO] is ON.
They are received if [Rx CH] matches, and used to control effects.
STATUS 1000nnnn 8n
Note off message
DATA 0nnnnnnn nn
Note number
0vvvvvvv vv
Velocity(ignored)
1.2 NOTE ON
Reception
These messages are echoed to MIDI OUT if [OTHER ECHO] is ON.
They are received if [Rx CH] matches, and used to control effects.
STATUS 1001nnnn 9n
Note on message
DATA 0nnnnnnn nn
Note number
0vvvvvvv vv
Velocity (1-127:on, 0:off)
1.3 CONTROL CHANGE
Two types of control change can be transmitted and received; [NRPN] (Non-
Registered Parameter Numbers) and freely-assigned [TABLE] (1CH x 110)
messages. Select either [TABLE] or [NRPN].
Reception
These messages are echoed to MIDI OUT if [Control Change ECHO] is ON.
If [TABLE] is selected, these messages are received when [Control Change Rx] is
ON and [Rx CH] matches, and will control parameters according to the settings
of the [Control assign table]. For the parameters that can be assigned, refer to
"Parameters that can be assigned to control changes" on page 245.
If [NRPN] is selected, these messages are received when [Control Change Rx] is
ON and the [Rx CH] matches; the four messages NRPN control number (62h,
63h) and DATA ENTRY control number (06h, 26h) are used to control the
specified parameter.
Transmission
If [TABLE] is selected, and if [Control Change Tx] is ON when you operate a
parameter that is assigned in the [Control assign table], these messages will be
transmitted on the [Tx CH] channel. For the parameters that can be assigned,
refer to "Parameters that can be assigned to control changes" on page 245.
If [NRPN] is selected, and if [Control Change Tx] is ON when you operate a
specified parameter, the four messages NRPN control number (62h, 63h) and
DATA ENTRY control number (06h, 26h) are transmitted on the [Tx CH]
channel. For the parameters that can be assigned, refer to "Parameters that can
be assigned to control changes" on page 245.
Control Change messages are not used for transmission to M7CL Editor because
there is no guarantee that the contents of the assignment tables will match.
(Parameter Change messages are always used.)
Control Change numbers 0 and 32 are for selecting banks.
STATUS 1011nnnn Bn
Control change
DATA 00 Control number (00)
0vvvvvvv vv Control Value (0-127)
STATUS 1011nnnn Bn Control change
DATA 20 Control number (32)
0vvvvvvv vv Control Value (0-127)
If [TABLE] is selected
STATUS 1011nnnn Bn Control change
DATA 0nnnnnnn nn Control number (1-5, 7-31, 33-37, 38-95,
102-119) *
0vvvvvvv vv Control Value (0-127)
* Numbers 0, 32, and 96–101 cannot be used.
* Control number 6, 38 can be used.

MIDI Data Format

Equation for converting a Control Value to parameter data
paramSteps = paramMax - paramMin + 1;
add
(8n)
mod
curValue
(1) If the assigned parameter has fewer than 128 steps
paramWidth = 128; rxValue = Control value;
(2) If the assigned parameter has 128 or more but less than
16,384 steps
paramWidth = 16384;
(2-1) When High and Low data is received
rxValue = Control value(High) * 128 + Control value(Low);
(9n)
(2-2) When only Low data is received
rxValue = (curValue & 16256) + Control value(Low);
(2-3) When only High data is received
rxValue = Control value(High) * 128 + (curValue & 127);
(3) If the assigned parameter has 16,384 or more but less than
2,097,152 steps
paramWidth = 2097152;
(Bn)
(3-1) When High, Middle, and Low data is received
rxValue = Control value(High) * 16384 + Control value(Middle) * 128 + Control
value(Low);
(3-2) When only Low data is received
rxValue = (curValue & 2097024) + Control value(Low);
(3-3) When only Middle data is received
rxValue = (curValue & 2080895) + Control value(Middle) * 128;
(3-4) When only High data is received
rxValue = (curValue & 16383) + Control value(High) * 16384;
(3-5) When only Middle and Low data is received
rxValue = (curValue & 2080768) + Control value(Middle) * 128 + Control
value(Low);
(3-6) When only High and Low data is received
rxValue = (curValue & 16256) + Control value(High) * 16384 + Control value(Low);
(3-7) When only High and Middle data is received
rxValue = (curValue & 127) + Control value(High) * 16384 + Control value(Middle)
* 128;
if ( rxValue > paramWidth)
rxValue = paramWidth;
param = ( rxValue - mod / 2) / add;
If [NRPN] is selected
STATUS
DATA
STATUS
DATA
STATUS
DATA
STATUS
DATA
* The STATUS byte of the second and subsequent messages need not
= paramWidth / paramSteps;
= paramWidth - add * paramSteps;
= paramSteps * add + mod / 2;
1011nnnn Bn
Control change
01100010 62
NRPN LSB
0vvvvvvv vv
Parameter number LSB
1011nnnn Bn
Control change *
01100011 63
NRPN MSB
0vvvvvvv vv Parameter number MSB
1011nnnn Bn Control change *
00000110 06 Data entry MSB
0vvvvvvv vv Parameter data MSB
1011nnnn Bn Control change *
00100110 26 Data entry LSB
0vvvvvvv vv Parameter data LSB
be added during transmission. Reception must occur correctly
whether or not the status byte is omitted.
MIDI Data Format
255
M7CL Owner's Manual