System Exclusive Data Format
0ddddddd
ddddddd = data
11110111
F7h
End of Exclusive
Micro Tune parameter change messages have the following format.
11110000
F0h
Exclusive
d1000011
43h
I.D. number (Yamaha)
0001nnnn
1nh
Basic receive channel
0ggggghh
ggggg = 00100 (4), hh = 00
0ppppppp
ppppppp = 1111101 (125) OCT
1111110 (126) FULL
0kkkkkkk
kkkkkkk = key number
0hhhhhhh
hhhhhhh = note C #-1 to C7 (13-108)
0 I I I I I I I
I I I I I I I = data fine tuning 0 to +31, –31 to –1 (0-32,33-63)
11110111
F7h End Of Exclusive
Program Change Table parameter change messages have the following format.
The data is 0-184d, indicating the TX81Z memory to be selected in response to
the incoming program change number. 0-31 (I1-I32), 32-63 (A1-A32), 64-95
(B1-B32), 96-127 (C1-C32), 128-160 (D1-D32), 161-184 (PF1-PF24)
11110000
F0h
Exclusive
01000011
43h
I.D. number (Yamaha)
0001nnnn
1nh
Basic receive channel
0ggggghh
ggggg = 00100 (4), hh = 00
0ppppppp
ppppppp = 1111111 (127)
0kkkkkkk
k k k k k k k = program change number
0hhhhhhh
hhhhhhh = data (high)
0 l l l l l l l
l l l l l l I = data (low)
11110111
F7h End Of Exclusive
BULK DATA
MESSAGES
The TX81Z receives and transmits 10 types of bulk data message. Each has the
format F0 (System Exclusive), 43 (Yamaha ID number), 0n (bulk data on
channel n), data size (high), data size (low), data, checksum (twos complement
of the lower 7 bits of the sum of all databytes), F7 (EOX). Some bulk data
messages have a 10-character ASCII header. These characters are considered to
be part of the data.
*Voice (SCED)
Additional voice parameters for the TX81Z. f = 126 (7Eh) “LM
..
8986-
AE”, data size = 23 + 10 = 33 (0021h)
F0. 43. 0n. 7E. 00. 21. “LM
..
8976AE”. (ACED data). checksum. F7
*1 Voice (VCED)
Voice parameters for the TX81Z. f = 4, data size = 93 (005dh), total size
= 93 + 8 = 101 (5Dh)
F0. 43. 0n. 03.00.5D. (VCED data). checksum. F7
Note
These two bulk data messages are transmitted when a voice is selected while
in PLAY SINGLE mode, or when you “lnit Voice” or “Recall Edit”.
If ACED is received alone, the VCED edit buffer will be unaffected,
If VCED is received alone, the ACED edit buffer will be initialized.
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