Sequential PROPHET-600 - 10-6 PITCH WHEEL; 10-7 PROGRAM DUMP

example,
when the wheel
is raised from its off
(down) position, the first code sent will
be
B0H-01H-01H:
BOH BH
=
Control Change status
0H=
Channel
1
01H MOD
wheel control address. Range: 00-01H (selects PITCH or MOD)
OIH Control value. Range: 00-20H
(0-31)
The
control value 01H,
of
course, is the first
increment of MOD wheel increase
above
00. In
the slave, this amount is added to the
current values of the slave's MOD
wheel
and INITIAL
MOD AMOUNT pots to establish the total
depth
of
modulation.
10-6
PITCH WHEEL
Like
the MOD wheel, master PITCH wheel control
over the slave is
also
disabled on
power up, but controlled by the
RECORD/PROGRAM SELECT U operation. Because it
affects pitch, this control needs S-bits of resolution, therefore
two data bytes
following
the status byte. The
pitch wheel value
is
formatted as a l^-bit signed two's-
complement number. For example, when the master PITCH wheel is
moved
up one
increment from center, the code
will
be E0H-02H-00H:
EOH EH=Pitch Change status
OH^Channel
1
02H
Increment
of LS
byte:
p6
p5
p4 p3 p2
pi pO
(LS
7 bits)
00H No change in M5byte:0pl3 pl2 pi 1 pIO
p9 p8
p7 (MS
7
bits)
Bit p0=0 and bits p9-pl3 are sign
bits
when transmitted by
a
-600.
In the receiver, the
I
1
* bits
are
shifted
as
follows:
pi 3 pi 3 pl2 pi I pIO
p9
pS
p7
p6
p5
p<»
p3 p2
pi pO
That
is, pi 3 is assumed to be the sign bit and hence is moved into the MS bit. The LS
byte is shifted to put the bits in the correct order. For reference, bit
p6
equals 1
semitone in the -600.
Also note that this pitch
value
does not go through
the
auto-tune
and as such should not range beyond
+/-
a 5th, for optimum tuning.
10-7
PROGRAM DUMP
The master
-600
can dump programs to the slave, reprogramming the same location by
another coded switch function. For example, if program 33 is selected on the master,
hold RECORD and hit PROGRAM SELECT 2. The slave's program 33 will be replaced
with the master's program.
This
will
happen regardless of the state of
either
instrument (Preset, Manual, Edit,
etc.).
Also note that the actual stored program value
is sent,
even
if it has been edited. This means that edited programs must be recorded
before they
can
be
sent.
10-ft CM600A 12/82