Yamaha DX21 Service Manual page 9

DX21
(2) Key On
Status
1OOOnnnn n=channel no.
Note no.
Okkkkkkk k=36(C1) ~ 96(C6)
Velocity 01000000
Control Change
Status
1011nnnn n=channel no.
Control no.
Occccccc
Control code
Ovvvvvvv
a) Transmitted whether MIDI CH INFO is ON or OFF
Control no. Control code.
C=64: Sustain sw. V=0:OFF( 127:ON
b) Transmitted when MIDI CH INFO is ON
Control No.
C=1: modulation wheel
C=2: breath control
C=6: data entry slider
C=7: foot volume
C=65: portamento sw.
Control code
V=0~127
V=0~127
V=0~127
V=0~127
V=0:OFF, 127:ON
(4) Program Change
Status llOOnnnn n=channel no.
Program no. Oppppppp p=0~31
This data is transmitted when a voice selector is pressed during the play mode,
when MIDI CH INFO is ON and MIDI SYS INFO is OFF. Also transmitted when
a performance selector is pressed in the performance mode.
(5) Pitch Bend
Status IllOnnnn
Code(LSB) Ouuuuuuu
Code (MSB) Ovvvvvvv
The transmitted data is as follows:
MSB
00000000
01000000
01111111
LSB
00000000
00000000
01111110
n=channel no.
Lowest value
Center value
Highest value
2-2. SYSTEM INFORMATION
2-2-1. System Real-time Message
Active sensing
Status 11111110
Transmitted once approximately every 200 milliseconds
2-2-2. System Exclusive Message
Trasnmitted only when MIDI SYS INFO is ON
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