System Exclusive Message; System Real Time Messages - Yamaha QY-20 Supplementary Manual

(3-3) REGISTERED PARAMETER NUMBER
(3-3-1) PITCH BEND SENSITIVITY
RPN MSB 00H
RPN LSB 00H
DATA ENTRY MSB mmH mmH = 00H - 18H (0 - 24 semitones)
DATA ENTRY LSB --- don't care
* Set to 2 semitones at power-on.
(3-3-2) MASTER FINE TUNE
RPN MSB 00H
RPN LSB 01H
DATA ENTRY MSB mmH
DATA ENTRY LSB llH
(mmH, llH)= (00H, 00H)
(-8192*100/8192) -
(3-3-3) MASTER COARSE TUNE
RPN MSB 00H
RPN LSB 02H
DATA ENTRY MSB mmH
DATA ENTRY LSB --- don't care
mmH = 28H - 40H - 58H (-24 - 0 - +24 semitones)
(3-3-4) RPN RESET
RPN MSB 7FH
RPN LSB 7FH
DATA ENTRY MSB --- don't care
DATA ENTRY LSB --- don't care
The RPN number is set to unspecified status. The internal data is not affected.

(3-4) SYSTEM REAL TIME MESSAGES

(3-2-1) ACTIVE SENSING
STATUS 11111110 (FEH)
Transmitted once approximately every 175 milliseconds.
Sensing is initiated the first time this code is received. If no status or data core is received
for more than about 350 milliseconds, the MIDI receive buffer is cleared and all current notes
and the sustain switch are forced off. Also, all control values are reset.
5
- (40H, 00H) - (7FH, 7FH)
0 - (+8192*100/8192)

(3-5) SYSTEM EXCLUSIVE MESSAGE

(3-5-1) GENERAL MIDI MODE ON
Sets the Utility mode PGC MODE parameter to GM.
The following controllers are reset to the values shown.
PITCH BEND CHANGE 0 (Center)
MODULATION 0 (Off)
EXPRESSION 127 (Maximum)
SUSTAIN SWITCH 0 (Off)
RPN Unspecified status — internal data not affected.
VOLUME 100
(3-5-2) GENERAL MIDI MODE OFF
Sets the Utility mode PGC MODE parameter to NORMAL.
The following controllers are reset to the values shown.
PITCH BEND CHANGE 0 (Center)
MODULATION 0 (Off)
EXPRESSION 127 (Maximum)
SUSTAIN SWITCH 0 (Off)
RPN Unspecified status — internal data not affected.
VOLUME 100
(4) KEYBOARD SWITCH, SEQUENCER, AND TONE GENERATOR
CONFIGURATION.
MIDI IN
> > > > <
t t
REC
SEQUENCER
PLAY
t t
< < >
t
t
Receive Channel
TONE GENERATOR
KEYBOARD SWITCH
Selected Track
t
t
MIDI OUT
< > > > >
t s
t
6