Yamaha DX7 II D Installation and operation manual

YAMAHA
MID I Technical
Data and Charts
I
OO·FD/D
DIGITAL PROGRAMMABLE ALGORITHM SYNTHESIZER
SUPPLEMENTAL BOOKLET

Welcome----------,
This supplemental booklet contains technical information about MIDI implementation of
the DX7 II FD/0.
This information includes details on the MIDI messages the DX7 II FD/D can transmit and
receive. Also included are the system bulk formats and individual parameter change mes-
sages for DX7 II FD/D voices, performances, microtunings, and system setups.
While this booklet is mainly intended for hardware and software designers who are
developing products that need to communicate with the DX7 II FD!D, it should also be
useful for DX7 II FD/D owners who wish to delve deeper into the nuts and bolts of MIDI.
For continuing information concerning the DX7 II FD!D, consult AfterTouch, the official
publication of the Yamaha Users Group. Many advanced functions will be discussed in its
pages in the coming months. There will also be information regarding the availability of
other materials concerning more advanced applications. To receive a free copy of After-
Touch every month, send your request to AfterTouch, P.O. Box 7938 Northridge, CA
91323-7938. On your letter or postcard, be sure to indicate that you are the owner of a
DX7 IIFD/0.

Contents
1 Section 1: MIDI Data Chart
2 Introduction to MIDI
3 MIDI Data Chart
5 Section 2: Control Change Messages
6 Receiving Control Change Messages
7 Transmitting Control Change Messages
9 Section 3: MIDI Data Formats
10 Transmission Requirements
11 Transmission Data
14 Reception Requirements
15 Reception Data
17 Voice Parameters (VCED format)
18 Additional Parameters (ACED format)
19 Performance Parameters (PCED, PMEM format)
20 Voice Data (VMEM format)
21 Additional Data (AMEM format)
22 System Set-up Parameters
23 Micro Tuning Parameters
24 Fractional Key Scaling Parameters

MIDI Data Chart
- 1-

Introduction
to MIDI
Status Byte
Data Bytes
Reading the
MIDI Data Chart
MIDI makes it possible for various types of equipment to communicate with each other.
By transmitting appropriate MIDI messages, a MIDI keyboard or sequencer can play
notes, make program changes, and send controller changes to external MIDI synthesizers
and tone generators. MIDI also makes it possible for voice and other memory data to be
sent from one MIDI device to another.
A MIDI message is made up of one or more bytes of information. The first byte of a MIDI
message is the Status byte. The Status byte establishes the type of message as a channel or
system message. If the message is a channel message, the Status byte will also include a
MIDI channel number.
For MIDI messages longer than one byte, the Status byte is followed by one or more Data
bytes. When a MIDI device receives a Status byte, it will know exactly how many Data
bytes the message should have and will expect those Data bytes to follow the Status byte.
The only exception is the System Exclusive (FO) message. When a MIDI device receives
an FO Status byte, it will continue to receive Data bytes until it gets an End Of Exclusive
(F7) Data byte.
The MIDI Data Chart on the next page shows the various standard MIDI messages that
the DX7 II ID/D can transmit and receive. The byte values in the chart are shown as
hexidecimal numbers.
-2-

MIDI Data Chart
Message Status Byte First Data Byte (xx) Second Data Byte (yy)
Note Off 8n Note Number Velocity
Note On 9n " "
Polyphonic
An
" Pressure
Aftertouch
Control Change Bn (Control Number)
01 Modulation Wheel Data
02 Breath Controller "
04 Foot Controller "
w 05 Portamento Time "
~
06 Data Entry Slider
07 Main Volume
w
~
40 Sustain l
...J
41 Portamento 00 Off
w
z 42 Sostenuto
7F: On
z 43 Soft J
<{
I
u 60 Data Increment
7F
61 Data Decrement
7F
I
7A Local 00:
Off. 7F On
78 All Note Off 00
(Channel Mode Message)
7C Omni Off 00
70 Omni On 00
L
7E Mono On 00-0A (Number of channels)
7F Poly On 00
Program Change Cn Program number
=========
Channel Aftertouch On
Pressure
==-----
Pitch Wheel En
LSB MSB
System Exclusive FO
Mftr. IDcode Undefined
w
-----
F1
---- ----
~
Song Position F2
LSB MSB
(f)
Po1nter
w
~
Song Select F3
Song number
----
z
w 0
-----
F4, F5
=========
=========
~
~
~
Tune Request F6
------
----
(f)
0
w u End Of Exclusive
F7
--- ----
~
~
Timing Clock
F8
------
--------
w
tn
w
----- ------
==========
~
F9
in
Start FA
~
---===
(f)
w
~
Continue FB
------
==========
w
~
Stop FC
------
----=
5
---
FD
----
==========
<{
w
------
---=====
cr:
Act1ve Sensing
FE
System Reset FF
---
=========
-3-

-4-

~ Control Change Messages
- 5-

Receiving
Control Change
Messages
Controller numbers appear in
bracketts and can be set using
the MIDI 1 button.
CS controller numbers 5-10
are for transmission only.
The DX7 II FDJD will respond to Control Change messages received from external MIDI
equipment. The diagram below shows the DX7 II FDJD controller effected by the received
message's control number. The effect on the current voice or performance is determined
by the parameter settings for the specified controller.
,,,,
Modulation wheel
>PMod >AMod >EGbias
( 1)
75 0 0
Breath control
>P~od>AMod>EGbias>Pbias
( 2)
0 0 0 + 0
::;::::':'::
''''''·'''''''
Foot control
>CS1>PMod>AMod>EGbias>Uol
( 'f)
off 0 0 99 0
,.,.,.
Foot control
2
>PMod >AMod >EGbias >Uol
( 7)
0 0 0 90
MIDI IN control >PMod >AMod >EGbias >Uol
[11] 0 0 0 0
PortaMento >Mode >SteP
0
cs 1
[ 6]
cs 2
[10]
sus-ke~ P retain
>Select
OP2 Frequenc~ fine
>Select
OP6 FrequencY coarse
>A
on
>TiMe (5)
0
>A >B
on off
>A
on
>B
on
>B
off
Foot switch
(6'f-67)
>Select >A >B
Portal'lent on on
-6-
2
4
7
A: 11-31
8:11-31
the LCD shows the
wrrently edited voice (A or B)
5
11-31
regulates parameter
appearing under ">Select'
11-31
regulates parameter
appearing under ">Select"
54: Sustain
65: Portamento On/Off
66:Keyhold
67:Soft
regulates parameter
appearing under ">Select"

Transmitting
Control Change
Messages
The DX7 II FD!D can transmit Control Change messages to external MIDI equipment. The
chart below shows the MIDI control number transmitted by each of the DX7 II FD!D's
controllers. Remember that the receiving MIDI device must use the same control number
to respond correctly.
DX7 II Controller Control Number Transmitted
Modulation Wheel 1
Breath Controller 2
Foot Controller 1 4
Foot Controller 2 7
Sustain Foot Switch
64
Foot Switch 2 64 Sustain
Selectable 65 Portamento On/Off
66 Key Hold
67 Soft
Continuous Slider 1 8
(NB Balance) in EDIT mode
Selectable from
5- 31 for use in PLAY mode*
Continuous Slider 2 6 (DATA ENTRY)
in EDIT mode
Selectable from
5- 31 for use in PLAY mode*
Data Entry Button Gil
96
Data Entry Button []]
97
• see page 39 of the DX7 II fd/d owners manual for a list of the
of the parameters assignable to the Continuous Sliders.
- 7-