Yamaha tx81z Service Manual page 15

TXS1Z
TX81Z
SYSTEM
EXCLUSIVE DATA
FORMAT
Reading
this
section will
not
necessarily
help
you
use
the
TX81Z,
This data
is
provided to
comply
with the
MIDI
Specification,
and
will
be
helpful to
those
who
write
computer programs
to process
TXB
12
data.
The
TX81Z
has
three
types
of
System
Exclusive message;
Parameter
Change
messages, Bulk Data messages and
Dump
Request
messages,
These
messages
change
the value
of
a
parameter
in
TX81Z
memory.
There
are
PARAMETER
8 subgroups of
Parameter Changes;
VCED, AGED,
PCED, Remote
Switch,
CHANGE
Micro Tuning, Program Change,
Effect data
and System
data,
MESSAGES
VCED, AGED, PCED
and
Remote Switch parameter change messages have the
following format.
1111
0000
0100001
OOGInnnn
Oggggghh
Oppppppp
Oddddddd
11110111
FGh
Exclusive
43h
l.D,
number
(Yamaha)
Inh Basic receive
channel
ggggg = Group number,
hh
-
Subgroup
number
ppppppp
= Parameter
number
ddddddd
=
Data
F7h End Of
Exclusive
*VCED
(Voice parameters compatible with
DX2
1/27/1 00)
ggggg
= 00100
(4),
hh - 10
(2)
*
AGED
(Additional voice
parameters
for
TX81
Z)
'
ggggg
-00100
(4),
hh*
11
(3)
*PCED
(Performance
parameters)
ggggg
= 00100
(4),
hh -
11
£3)
* Remote Switch (The
same
effect as pressing
a
switch on
the
TX81Z
front
panel,
ie,
"remote control",)
ggggg
-
001 00
(0),
hh
=»
00
(0),
ddddddd
= 0
(off),
7F
(on)
System
Parameter
Change
(basic receive
channel settings,
etc.)
and Effect
Parameter Change
(data for delay,
pan
and
chord) messages have the following
format.
1111 0000
01000011
0001
nnnn
Oggggghh
Okkkkkkk
Oddddddd
11110111
FQh Exclusive
43h
l.D,
number
(Yamaha)
Inh Basic receive
channel
ggggg
-
00100
(4),hh
=
00
(0)
kkkkkkk
= Parameter number
(123
= System
Parameter,
124 =
Effect Parameter)
ddddddd
=
data
F7h End
of Exclusive
%.
15