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Roland TD-7 - Page 162

Roland TD-7
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Roland
Exclusive
Messages
Roland's
Mil}!
implementation
uses
the
following
data
furntatt
for
all
exclusive
messages
(type
it’):
i
Byte
‘
Deserietion
i
'
":*;:if;_._
_:_:__
_
;:_:::_:
_____
__
_ _
'
in
'
7"
*
';i’1I_T1
______i'
77'
7?
I
FOH
Exclusive
status
ll
41H
3
Manufacturer
3D
(Roland)
‘
DEM‘
Device
ID
‘
'
MDL
Model
|D
I
‘
CMD
‘
Command
ID
T
[BODY]
Main
data
l
An
exclusive
message
must
be
flanked
by
a
pair
of
status
codes.
starting
with
a
Manufacturer-ID
immediately
after
F0!--l
(Mil)!
versinnl.{)).
Manufacturer-ID
:
41H
The
Manufacturer-lD
identifies
the
manufacturer
of
a
MlDl
instrument
that
triggers
an
exclusive
message.
Value
dill
represents
Roland's
Manufacturer~lD.
-
Device-ID
:
DEV
The
[}evice»ID
contains
a
unique
value
that
identifies
the
individual
device
in
the
multiple
implementation
of
MIDI
instruments.
lt
is
usually
set
to
OOH
-
OFH.
a
value
smaller
by
one
than
that
of
a
basic
channel.
out
value
U0!-I
-
IF!-i
only
be
used
for
a
device
with
multiple
basic
channels.
::Model-ID
;
MDL
The
Model-ll)
contains
a
value
that
uniquely
identifies
one
model
from
another.
Different
models.
however,
may
share
an
identical
Model-ll‘)
if
they
handle
similar
data.
The
lvlodel~llJ
format
may
contain
OOH
in
one
or
more
places
to
provide
an
extended
data
field.
The
following
are
examples
of
valid
Model-ills.
each
representing
a
unique
model:
Dill
02H
03H
IJDH.
(Jill
ODH.
02!-I
OOH. OOH.
Dill
.-=
Command-ID
=
CMD
The
Command-ll)
indicates
the
function
of
an
exclusive
message.
The
Cotnmand-ID
format
may
contain
0011
in
one
or
more
places
to
provide
an
extended
data
field.
The
following
are
examples
of
valid
Command-
lI)s.
each
representing
a
unique
function:
0
I
H
02H
03H
D_a_t_a
Format
fofrfigxcglugsiive
Messages‘
=
One
way
transfer
procedure
(See
Section
3
for
details.)
This
procedure
is
suited
for
the
transfer
of
a
small
amount
of"data.
it
sends
out
an
exclusive
ntcssuee
cornpictely
independent
of
21
receiving
device
status.
Connection
Diagram
Device
(A)
Device
(B)
I
~
MID!
DUI
MlDl
FN
MlDl
IN
"é*""'
MID! OUT
Connection
at
point
2
is
essential
for
"l'-it.-out-st
data"
p|'tx:t:dures.
(See
Section
3.)
F7H
End
of
exclusive
1
:Handshake--transfer
procedure
is
e
‘
~
---
e
-~
1
=
~*
(This
device
does
not
cover
this
procedure;
MIDI
status:
FOH
FTH
This
procedure
initiates
a
prodeterrnined
transfer
sequence
(handshal-tinlt)
across
the
interface
before
data
transfer
takes
place.
llandshal-tint!
ensures
that
reliability
and
transfer
speed
are
high
enough
to
handle
a
large
arnount
of
tiala.
Connection
Diagram
Device
(A)
Device
(E1)
t
MlDl
out‘
mot
IN
MIDI
IN
2
mot
our
(.‘onnectiun
at
points
l
and
2
is
essential.
Notes
on
the
above
two
procedures
=l=
There
are
separate
Command
ills
{or
different
transit.-r
procedures.
*
Devices
A
and
ll
cannot
exchange
data
unless
they
use
the
same
transfer
procedure.
share
identical
l)evicc-ll)
and
.\ltx'lt-:l
ll).
and
are
ready
for
communication.
lonewav
Transfer
Procedure]
This
procedure
sends
out
data
all
the
way
until
it
stops
and
is
used
when
the
messages
are
so
short
that
anstvertiacks
need
not“-be
checked.
For
long
rncssastcs.
however.
the
receiving
device
must
acquire
each
message
in
time
with
the
transfer
sequence.
which
inserts
intervals
of
at
least
20
millisetmnds
in
tic-tween.
"
Typos
of
Massage:
Y
_
7*;
4:
__
Jirrflf
:;::*
:
7%
:7:
if’
7
s"
T
:
"*’*’
in-1'
'
1;;
Message
Command
ID
Request
data
l
RQI
(ill-i)
Data
set
I
DTI
(l2Hl
Q{)H_
gift
:HBql.l8S‘l
data
;:1
:
RQ1
t1lH)
OOH,
02H
OOH. OOH.
Oil!
:M8lfl
data:
BODY
This
field
contains
a
message
to
be
exchanged
across
an
interface.
The
exact
data
size
and
contents
will
vary
with
the
Model-If)
and
Command-1D.
.A=ld's==~'»'"=PP"='
Peta
Ttrmlstl
Address
mapping
is
a
technique
for
transferring
messages
conforming
to
the
data
format
given
in
Section
1.
it
assigns
a
series
of
memory-
resident
records»-waveform
and
tone
data,
switch
status.
and
parameters.
for
example-to
specific
locations
in
a
machinedeoendent
address
space,
thereby
allowing
access
to
data
residing
at
the
address
a
message
specifics.
Address
mapped
data
transfer
is
therefore
independent
of
models
and
data
categories.
This
technique
allows
use
of
ttvo
different
transfer
procedures:
one-was’
transfer
and
handshake
transfer.
This
message
is
sent
out
when
there
is
a
need
lo
acquire
dam
from
a
device
at
the
other
end
of
the
interface.
it
contains
data
for
the
address
and
size
that
specify
designation
and
length.
respectively,
of
data
required.
On
receiving
an
Rt}!
message.
the
remote
device
checks
its
memory
for
the
data
address
and
size
that
satisfy
the
request.
if
it
finds
them
and
is
read)’
for
communication.
the
device
will
transmit
ti
"Data
set
l
{l)'l'll"
message.
which
contains
the
requested
data.
Otherwise.
the
device
will
send
out
nothing.
F
—*"
"*;(""
*~—*——=_
"—_—
"*1
”
*1’
*
=
l
Byte
Description
9
it
'
"W
1-unuiir
"
in-an-1
_
__
__
__
1
FOH
Exclusive
status
~
rill-l
=
Manufacturer
ID
(Finland)
.1
DEV
l
Device
ID
‘
l
MDL
"
Model
tD
l
l
if-I
.[
Command
it)
i
1
Address
MSB
1
tn
co
DU”!
anon-uni
II
hflfi
‘USU
tse
o
3
Size
M55
l
l
I
‘
I
on
i
.
tsa
sum
~
Check
sum
FYH
End
of
exclusive
-4'
'
”
'
247*"
"s
*'
4'
_
_
—
:
;:;____
'
——
_
i

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