Roland TR-808 User manual

Model 8-448 ver. 2.01
USER MANUAL
© 2006 CHD Elektroservis

TR
TR TR
TR-
--
-808 MIDI Interface
808 MIDI Interface808 MIDI Interface
808 MIDI Interface Model 8
Model 8Model 8
Model 8-
--
-448 ver. 2.0
448 ver. 2.0448 ver. 2.0
448 ver. 2.0
2
Copyright © 2005 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
Contents
1. MIDI interface description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Selection of TR-808 operation modes . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1. Connection of TR-808 to MIDI system . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2. Operation modes indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. MIDI implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1. Channel MIDI messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1.1. Note On commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1.2. Program (Patch) Change commands . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2. Common System Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3. System Exclusive Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3.1. Structure of System Exclusive Messages. . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3.2. System Exclusive Messages creating . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Appendices
A. Warranty conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
B. Error indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
C. Drum maps of C/M, GM, GS and XG standards . . . . . . . . . . . . . . . . . . . . . 13
D. MIDI Implementation Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Manufacturer :
CHD Elektroservis
9.května 78/35, 198 00 Praha 9, Czech Republic
www.chd-el.cz
[e-mail]

TR
TR TR
TR-
--
-808 MIDI Interface
808 MIDI Interface808 MIDI Interface
808 MIDI Interface Model 8
Model 8Model 8
Model 8-
--
-448 ver. 2.0
448 ver. 2.0448 ver. 2.0
448 ver. 2.0
3
Copyright © 2005 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
1. MIDI interface description
The TR-808 MIDI retrofit enables your Roland TR-808 to be synchronized with other MIDI
devices and work like polyphonic velocity sensitive MIDI drum expander. More over all original features
of the TR-808 are not changed.
2. Selection of TR-808 operation modes
The operation modes are selected by three-position "SYNC" switch on the rear panel:
a) The upper position "INPUT" and lower "OUTPUT" sets the TR-808 to receive or transmit the CV
DIN-SYNC. The MIDI interface is switched off in both Upper and lower positions. All TR-808
functions remain the same as on original, not retrofitted instrument. TR-808 acts like DIN-SYNC
master unit fully controlled with panel buttons or DIN-SYNC slave unit controlled by other DIN-
SYNC machine respectively.
b) The middle position sets the TR-808 in MIDI mode. In this mode, The TR-808 is controlled via
MIDI bus or controllers on TR-808 panel. LED embedded in "START/STOP" button lits in MIDI
mode.
INPUT
OUT-
PUT
INPUT
OUT-
PUT
INPUT
OUT-
PUT
a) CV DIN-SYNC b) MIDI INPUT
2.1. Connection of TR-808 to MIDI system
Device is connected to DIN-SYNC bus or to MIDI bus via 7-pin connector ("SYNC") on rear panel
of TR-808. Pins 1 to 5 are used for DIN-SYNC signals, pins 6 and 7 are used for MIDI input. For the
DIN-SYNC control ("SYNC" switch in "INPUT" or "OUTPUT" position) use standard 5-pin cable, same
as with the original not retrofitted TR808. For the MIDI control ("SYNC" switch in central position), use
special 7-pin to 5-pin reduction cable (part of interface delivery). For the TR808 use the 7-pin
connector side, for MIDI output of sequencer (or master keyboard etc.) use the standard 5-pin
connector side.
Front view :
1 - DIN-SYNC Start / Stop
2 - DIN-SYNC Ground
3 - DIN-SYNC Clock
4 - DIN-SYNC Fill In
5 - DIN-SYNC Reset / Start
6 - MIDI In (+)
7 - MIDI In (-)
DIN-S
Y
NC IN
/
OUT
6 7
MIDI IN
1 4 2 5 3

TR
TR TR
TR-
--
-808 MIDI Interface
808 MIDI Interface808 MIDI Interface
808 MIDI Interface Model 8
Model 8Model 8
Model 8-
--
-448 ver. 2.0
448 ver. 2.0448 ver. 2.0
448 ver. 2.0
4
Copyright © 2005 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
Fig. 1 – Connection of TR-808 to MIDI system
Master Keyboard,
sequencer, PC ...
MIDI OUT
S
Y
NC
INPUT
OUT-
PUT
Rear panel of TR808
Special MIDI cable
5-pins 7-pins
2.2. Operation modes indication
In all working modes (DIN-SYNC and MIDI), the functionality of all original
LEDs on TR-808 panel remains the same as on the non-retrofitted instrument.
The LED can indicate received MIDI commands too - this can be done by
user with help of SysEx message. In this case, the LED always shortly blinks if
acceptable MIDI command is received. But in the case of dense data flow, short
blinks are just one constant extinction of the LED. The indication of received MIDI commands is
disabled during factory setting.
3. MIDI implementation
TR-8080 retrofit uses standard MIDI channel data, common system data and System Exclusive
Messages - see MIDI Implementation Chart in appendices.
3.1. Channel MIDI messages
MIDI channel 10 is used as a factory default. The channel number can be changed by MIDI
System Exclusive Message if it is necessary. Acceptable are "Note On" and "Program Change"
commands. All others channel commands are ignored.
3.1.1. Note-On commands
The interface receives MIDI notes from 12 (0Ch) to 90 (5Ah). Any of TR-808 tone generators (or
none) can be assigned to every of these MIDI notes. Assigning of tone generators can be changed by
System Exclusive Messages. Default factory setting is described in table 1 (see picture too), it
corresponds to C/M, GM, GS, XG standards. Drum maps of these standards are described in table 5
for comparison.
Values of "Velocity" of Note-on commands (second data byte) are converted to level of assigned
tone generators. It is possible to set the slope and the shift of conversion curve (dynamic range) of
assigned tone generator. It can be done by MIDI System Exclusive Messages. Default factory setting
is maximal dynamic range for all acceptable MIDI notes.
S T A R T
S T O P
L E D

TR
TR TR
TR-
--
-808 MIDI Interface
808 MIDI Interface808 MIDI Interface
808 MIDI Interface Model 8
Model 8Model 8
Model 8-
--
-448 ver. 2.0
448 ver. 2.0448 ver. 2.0
448 ver. 2.0
5
Copyright © 2005 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
Table 1 –MIDI notes definition – default status after „Factory Reset”
Note No. Assigned tone generator Note No. Assigned tone generator
Level Slope Level Slope
dec hex No. Instrument name Min Max dec hex No. Instrument name Min Max
12 0C 0 None 0 127 52 34 0 None 64 127
13 0D 0 None 0 127 53 35 10 Open Hi-Hat 0 32
14 0E 0 None 0 127 54 36 7 Hand Clap / Maracas 0 127
15 0F 0 None 0 127 55 37 9 Cymbal 32 96
16 10 0 None 0 127 56 38 8 Cow Bell 0 127
17 11 0 None 0 127 57 39 9 Cymbal 32 127
18 12 0 None 0 127 58 3A 0 None 0 127
19 13 0 None 0 127 59 3B 9 Cymbal 0 96
20 14 0 None 0 127 60 3C 3 Lo Tom / Lo Conga 0 127
21 15 0 None 0 127 61 3D 4 Mid Tom / Mid Conga 0 127
22 16 0 None 0 127 62 3E 5 Hi Tom / Hi Conga 0 127
23 17 0 None 0 127 63 3F 4 Mid Tom / Mid Conga 0 127
24 18 0 None 0 127 64 40 5 Hi Tom / Hi Conga 0 127
25 19 0 None 0 127 65 41 0 None 0 127
26 1A 0 None 0 127 66 42 0 None 0 127
27 1B 0 None 0 127 67 43 0 None 0 127
28 1C 0 None 0 127 68 44 0 None 0 127
29 1D 0 None 0 127 69 45 7 Hand Clap / Maracas 0 96
30 1E 0 None 0 127 70 46 7 Hand Clap / Maracas 0 127
31 1F 2 Snare Drum 0 64 71 47 0 None 0 127
32 20 6 Rim Shot / Claves 0 64 72 48 0 None 0 127
33 21 1 Bass Drum 0 64 73 49 0 None 0 127
34 22 6 Rim Shot / Claves 0 127 74 4A 0 None 0 127
35 23 1 Bass Drum 0 127 75 4B 6 Rim Shot / Claves 0 127
36 24 1 Bass Drum 0 127 76 4C 0 None 0 127
37 25 6 Rim Shot / Claves 0 127 77 4D 0 None 0 127
38 26 2 Snare Drum 0 127 78 4E 0 None 0 127
39 27 7 Hand Clap / Maracas 0 127 79 4F 0 None 0 127
40 28 2 Snare Drum 0 127 80 50 0 None 0 127
41 29 3 Lo Tom / Lo Conga 0 127 81 51 0 None 0 127
42 2A 11 Closed Hi-Hat 0 127 82 52 7 Hand Clap / Maracas 0 64
43 2B 3 Lo Tom / Lo Conga 0 127 83 53 0 None 0 127
44 2C 10 Open Hi-Hat 0 127 84 54 0 None 0 127
45 2D 4 Mid Tom / Mid Conga 0 127 85 55 0 None 0 127
46 2E 10 Open Hi-Hat 0 127 86 56 0 None 0 127
47 2F 4 Mid Tom / Mid Conga 0 127 87 57 0 None 0 127
48 30 5 Hi Tom / Hi Conga 0 127 88 58 0 None 0 127
49 31 9 Cymbal 32 127 89 59 0 None 0 127
50 32 5 Hi Tom / Hi Conga 0 127 90 5A 0 None 0 127
51 33 9 Cymbal 0 96

TR
TR TR
TR-
--
-808 MIDI Interface
808 MIDI Interface808 MIDI Interface
808 MIDI Interface Model 8
Model 8Model 8
Model 8-
--
-448 ver. 2.0
448 ver. 2.0448 ver. 2.0
448 ver. 2.0
6
Copyright © 2005 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
Fig. 2 – Drum set
Requested dynamic range of selected MIDI note can be set
by "Level Slope Min" and "Level Slope Max" parameters. "Level
Slope Min" set output level of generator signal if "Velocity" is 1
and "Level Slope Max" set output level of generator signal if
"Velocity" is 127. For all others values of "Velocity", output level
of generator is linearly interpolated between "Level Slope Min"
and "Level Slope Max" levels.
Fig. 3 – Setting of tone generators dynamics
Note: TR-808 tone generators reaction to the MIDI velocity
is different for each particular drum sound. It corresponds to the
original "Accent" setting range. Some of the sounds have large
accent sensitivity range, some of the generators provide only
minor changes with the higher accent level. This is done by the
TR-808 construction and it is not possible to change it without
major TR-808 circuitry modification.
3.1.2. Program (Patch) Change commands
MIDI Program Change command is used to select TR-808
MIDI control/synchronization via MIDI bus or controllers on TR-
808 panel. Interface uses program numbers 1 (00h) to 13 (0Ch),
all others numbers are ignored. Program No. 1 is default on
every TR-808 start-up.
In dependence on selected program number, the
combination of control/synchronization modes is used - see table
2. Note that tone generators of TR-808 can be triggered by MIDI
notes and by internal sequencer of TR-808 simultaneously and
-
87
78
80
82
85
88
79
81
83
86
84
77
75
66
68
70
73
76
67
69
71
74
72
65
63
54
56
58
61
64
55
57
59
62
60
53
51
42
44
46
49
52
43
45
47
50
48
41
39
30
32
34
37
40
31
33
35
38
36
29
27
18
20
22
25
28
19
21
23
26
24
17
15
13
16
14
12
-
-
-
-
Hand Clap / Maracas
-
-
-
-
-
-
Rim Shot / Claves
-
-
-
-
Hand Clap / Maracas
Hand Clap / Maracas
-
-
-
-
High Tom / High Conga
Mid Tom / Mid Conga
Low Tom / Low Conga
High Tom / High Conga
Mid Tom / Mid Conga
Cymbal
-
Cymbal
Cow Bell
Cymbal
Hand Clap / Maracas
Open Hi-Hat
Cymbal
Cymbal
High Tom / High Conga
Cymbal
High Tom / High Conga
Mid Tom / Mid Conga
Open Hi-Hat
Mid Tom / Mid Conga
Open Hi-Hat
Low Tom / Low Conga
Cloded Hi-Hat
Low Tom / Low Conga
Snare Drum
Hand Clap / Maracas
Snare Drum
Rim Shot / Claves
Bass Drum
Bass Drum
Rim Shot / Claves
Bass Drum
-
Rim Shot / Claves
Snare Drum
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
90
89
"Middle C"

TR
TR TR
TR-
--
-808 MIDI Interface
808 MIDI Interface808 MIDI Interface
808 MIDI Interface Model 8
Model 8Model 8
Model 8-
--
-448 ver. 2.0
448 ver. 2.0448 ver. 2.0
448 ver. 2.0
7
Copyright © 2005 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
internal sequencer of TR-808 can be started and stopped by MIDI commands and by START/STOP
button simultaneously too.
Table 2 – Valid program numbers
Control mode
Program
No. Sound generators activity Synchronization
Source Start / Stop commands Notes
1 Internal sequencer or MIDI Note Internal only Internal or MIDI
1
)
2 Internal sequencer or MIDI Note MIDI clock Internal or MIDI
1
)
3 Internal sequencer or MIDI Note Internal only Internal only
1
)
4 Internal sequencer or MIDI Note MIDI clock internal only
1
)
5 Internal sequencer or MIDI Note Internal only MIDI only
1
)
6 Internal sequencer or MIDI Note MIDI clock MIDI only
7 Internal sequencer Internal only Internal or MIDI
1
)
8 Internal sequencer MIDI clock Internal or MIDI
1
)
9 Internal sequencer Internal only Internal only
1
)
2
)
10 Internal sequencer MIDI clock Internal only
1
)
11 Internal sequencer Internal only MIDI only
1
)
12 Internal sequencer MIDI clock MIDI only
13 MIDI notes only None None
3
)
1
) Internal mode means that device can be controlled by buttons and knobs on panel of device.
2
) MIDI interface turned off - TR-808 works with internal sequencer only.
3
) TR-808 works as a MIDI expander.
4
) Program numbers higher than 13 are ignored.
3.2. Common System Messages
TR-808 retrofit use "MIDI Clock", "Start", "Stop" a "Continue" MIDI common system messages.
They are used to control the internal sequencer tempo, start and stop commands in dependence on
selected program number. The following picture is showing the TR-808 reaction to "Start", "Stop" and
"Continue" commands.
Fig. 4 – Reaction of TR-808 to system MIDI commands
START
STOP
CONTINUE
RESET / START
FILL IN
RUN
TR-808 MIDI
For the proper synchronization, the "MIDI Clock" tempo must be between 40 and 260 BPM.

TR
TR TR
TR-
--
-808 MIDI Interface
808 MIDI Interface808 MIDI Interface
808 MIDI Interface Model 8
Model 8Model 8
Model 8-
--
-448 ver. 2.0
448 ver. 2.0448 ver. 2.0
448 ver. 2.0
8
Copyright © 2005 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
3.3. System Exclusive Messages
3.3.1. Structure of System Exclusive Messages
If necessary, TR-808 MIDI interface can be reprogrammed by user with help of SysEx messages.
Transmitting of "Bulk Dump Load" SysEx message from host system to internal memory of the
interface can change system parameters (channel for MIDI communication setting and mode of LED
indicator setting) or it can change the table of tone generators assigning and their dynamic range
setting for requested MIDI note (drum map definition).
"Bulk Dump Load" message format is always:
F0h Start SysEx
00h 20h 21h Mfr ID
7Fh Device ID
61h Model ID
20h Command (Bulk Dump Load)
aa Address
dd dd dd Datablock
xx Checksum
F7h End SysEx
Address aa selects group of parameters for changes. Valid range is 0 to 79 (00h to 4Fh).
Datablock dd dd dd always includes three databytes. Their values determine values of parameters
given by address aa. Checksum xx is created in standard way - seven-bit sum of bytes from "Model
ID" up to "Checksum" included has to equal to zero.
If address aa is 0 to 78 (00h to 4Eh), parameters for assignig of tone generator and its dynamic
range to some of MIDI notes are selected. Address 0 (00h) selects note No. 12, address No. 1 (01h)
selects note No. 13 etc. up to addres 78 (4Eh) which selects note No. 90.
• First databyte in block is then number of assigned tone generator. Valid range is 0 to 11 (00h to
0Bh). If zero is selected, none generator is assigned to selected MIDI note. Values 1 to 11 defines
tone generator as described in table 3.
• Second databyte in block sets minimal output level of tone generator (for "Velocity" = 1). Its value
can be in range from 0 to 127, but the value must not be greater than value of third databyte.
• Third databyte in block sets maximal output level of tone generator (for "Velocity" = 127). Its value
can be in range from 0 to 127, but the value must not be lower than value of second databyte.
Group of system parameters is selected for address aa equal to 79 (4Fh).
• First databyte in block then sets the number of MIDI channel selected for data receiving. Valid range
is from 0 to 15 (from 00h to 0Fh) for MIDI channel from 1 to 16 selection.
• Second databyte in block disables (value equal to 0) or enables (value equal to 1) the indicaton of
received MIDI commands by LED embedded in START / STOP button.
• Third databyte is not used, it must be always equal to 0 (00h).

TR
TR TR
TR-
--
-808 MIDI Interface
808 MIDI Interface808 MIDI Interface
808 MIDI Interface Model 8
Model 8Model 8
Model 8-
--
-448 ver. 2.0
448 ver. 2.0448 ver. 2.0
448 ver. 2.0
9
Copyright © 2005 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
Table 3 – Numbers of tone generators
Number Tone generator
dec hex Name Symbol
0 00 None – Note On command is ignored -
1 01 BASS DRUM BD
2 02 SNARE DRUM SD
3 03 LOW TOM / LOW CONGA LT / LC
4 04 MID TOM / MID CONGA MT / MC
5 05 HIGH TOM / HIGH CONGA HT / HC
6 06 RIM SHOT / CLAVES RS / CL
7 07 HAND CLAP / MARACAS CP / MA
8 08 COW BELL CB
9 09 CYMBAL CY
10 0A OPEN HI-HAT OH
11 0B CLOSED HI-HAT CH
Example 1 : MIDI channel changed to 2 and indication of received MIDI commands enabled
Start SysEx = F0h
Mfr ID = 00h 20h 21h
Device ID = 7Fh
Model ID = 61h
Command = 20h
Address = 4Fh → system parameters
Data 1 = 01h → MIDI channel No. 1
Data 2 = 01h → indication turned on
Data 3 = 00h → not used byte
Checksum = 2Eh → 61h + 20h + 4Fh + 01h + 01h + 00h + 2Eh = 00h
End SysEx = F7h
Example 2 : Tone generator COW BELL assigned to MIDI note No. 13, dynamics turned off, middle
output level of generator selected
Start SysEx = F0h
Mfr ID = 00h 20h 21h
Device ID = 7Fh
Model ID = 61h
Command = 20h
Address = 01h → definition of MIDI note No.13
Data 1 = 08h → tone generator COW BELL assigned
Data 2 = 40h → dynamics off, middle level selected (Level Slope Min)
Data 3 = 40h → dynamics off, middle level selected (Level Slope Max)
Checksum = 76h → 61h + 20h + 01h + 08h + 40h + 40h + 76h = 00h
End SysEx = F7h

TR
TR TR
TR-
--
-808 MIDI Interface
808 MIDI Interface808 MIDI Interface
808 MIDI Interface Model 8
Model 8Model 8
Model 8-
--
-448 ver. 2.0
448 ver. 2.0448 ver. 2.0
448 ver. 2.0
10
Copyright © 2005 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
Example 3 : Tone generator CYMBAL assigned to MIDI note No. 89, upper border of dynamic range
limited to 50%
Start SysEx = F0h
Mfr ID = 00h 20h 21h
Device ID = 7Fh
Model ID = 61h
Command = 20h
Address = 4Dh → definition of MIDI note No. 89
Data 1 = 09h → tone generator CYMBAL assigned
Data 2 = 00h → lower border of dynamic range without limitation (Level Slope Min)
Data 3 = 40h → upper border of dynamic range is 50% (Level Slope Max)
Checksum = 69h → 61h + 20h + 4Dh + 09h + 00h + 40h + 69h = 00h
End SysEx = F7h
3.3.2. Creating of System Exclusive Messages
W e have prepared
software generator for simple
creating of SysEx messages
for programming of TR-808
interface. Any programming
message can be created with
help of this generator without
difficult calculating with
hexadecimal numbers.
Generator is based on Java
scripts so it is possible to use it
with any operational system of
PC, but any of browsers (MS-
Explorer, Netscape, etc.) must
be installed in the computer.
Program is available on
supplemental CD ROM.
W indow of generator opens
after ”TR-808.html" file
opening. In this window, values
of all parameters can be set by
select-boxes in middle column
of table. After setting of
requested values of
parameters, generator is
started by clicking on correspond „Generate“ button. MIDI System Exclusive Messages are generated
in hexadecimal form as a text. Now it is necessary to transfer the message from text field of generator
to SysEx Msg editor of any musical software (Cubase™, Cakewalk™, Sonar™, Midi OX etc.) and than
to transmit it to TR-808. Text of generated message can be transferred with help of clipboard for
example.

TR
TR TR
TR-
--
-808 MIDI Interface
808 MIDI Interface808 MIDI Interface
808 MIDI Interface Model 8
Model 8Model 8
Model 8-
--
-448 ver. 2.0
448 ver. 2.0448 ver. 2.0
448 ver. 2.0
11
Copyright © 2005 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
Other way is to use predefined Studio Ware panel for Cakewalk™ or Sonar™ software. Panel is
available on supplemental CD ROM. If you choose to use the "Studio W are" panel, it is necessary to
copy CHD_TR808.CakewalkStudioW are file from CD-ROM to your computer's hard disk.
Requested values of all parameters can be set simply in "SETTING – SYSTEM" and
"ASSIGN INSTRUMENTS" windows. New values of parameters are then stored in user memory of TR-
808 by pressing of "SEND" button.

TR
TR TR
TR-
--
-808 MIDI Interface
808 MIDI Interface808 MIDI Interface
808 MIDI Interface Model 8
Model 8Model 8
Model 8-
--
-448 ver. 2.0
448 ver. 2.0448 ver. 2.0
448 ver. 2.0
12
Copyright © 2005 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
APPENDICES
A. Warranty conditions
The equipment is provided with thirty-month warranty starting from the date of the equipment
take-over by the customer. This date must be specified on warranty list together with dealer's
confirmation.
During this period of time, all defects of equipment or its accessories, caused by defective
material or faulty manufacturing, will be removed free of charge.
Warranty repair is asserted by the customer against the dealer.
Warranty period is to be extended for the time period, during which the product was under the
warranty repair.
The relevant legal regulations take effect in case of cancellation of purchase contract.
The customer will lose the right for free warranty repair, if he will not be able to submit properly
filled out warranty list or if the defects of the product had been caused by :
• unavoidable event (natural disaster),
• connecting the device to the incorrect supply voltage,
• inputs or outputs overloading by connecting the signals source or load source with not-
corresponding characteristics etc.,
• faulty equipment operation, which is at variance with the instructions referred-to in the operating
manual,
• mechanical damage caused by consumer during transportation or usage of equipment,
• unprofessional interference with the equipment or by equipment modification without manufacturer's
approval.
B. Error indication
Table 4 – Error status
Error description
Error No. Name Indicated problem
Number of
LED blinks
1 EEPROM
Malfunction
MIDI interface internal memory does not communicate with CPU - reset
the interface by switching the TR-808 off and on. 1
2 EEPROM
Busy
MIDI interface internal memory is reacting too slowly to the CPU
requirements -reset the interface by switching the TR-808 off and on. 2
3 EEPROM
Failed Cell
Invalid data in the internal memory MIDI cell - reset the interface by
switching the TR-808 off and on. 3
4 MIDI Buffer
Overflow
MIDI data loss at the MIDI input - too much MIDI data has been sent to
the instrument. 4
5 DAC
Malfunction
Internal D/A converter of the MIDI interface does not communicate with
CPU - reset the interface by switching the TR-808 off and on. 5
The LED embedded in the START / STOP button is used as an error indicator - blinking LED is
indicating the error status. The number of LED blinks is indicating the error number (see table 4). To
reset the interface switch the TR-808 off and then on. If the same error status is now repeated, contact
the authorized service center.

TR
TR TR
TR-
--
-808 MIDI Interface
808 MIDI Interface808 MIDI Interface
808 MIDI Interface Model 8
Model 8Model 8
Model 8-
--
-448 ver. 2.0
448 ver. 2.0448 ver. 2.0
448 ver. 2.0
13
Copyright © 2005 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
C. Drum maps of C/M, GM, GS and XG standards
Table 5 – C/M , GM, GS, XG standards
Standard Note
No. C/M Instruments GM Instruments GS Instruments XG Instruments
12 - - - -
13 - - - Muted Surdo
14 - - - Open Surdo
15 - - - High Q
16 - - - Whip Slap
17 - - - Scratch Push
18 - - - Scratch Pull
19 - - - Finger Slap
20 - - - Click Noise
21 - - - Metronome Click
22 - - - Metronome Bell
23 - - - Seq Click Low
24 - - - Seq Click High
25 - - Snare Roll Brush Tap
26 - - Finger Slap Brush Swirl Low
27 - - High Q Brush Slap
28 - - Slap Brush Swirl High
29 - - Scratch Push Snare Roll
30 - - Scratch Pull Castanet
31 - - Sticks Snare Low
32 - - Square Click Sticks
33 - - Metronome Click Bass Drum Low
34 - - Metronome Bell Open Rim Shot
35 Accoustic Bass Drum Accoustic Bass Drum Bass Drum 2 Bass Drum Mid
36 Accoustic Bass Drum Bass Drum 1 Bass Drum 1 Bass Drum High
37 Rim Shot Side Stick Side Stick Side Stick
38 Accoustic Snare Drum Accoustic Snare Drum Snare Drum 1 Snare Drum Mid
39 Hand Clap Hand Clap Hand Clap Hand Clap
40 Electric Snare Drum Electric Snare Drum Snare Drum 2 Snare Drum High
41 Low Tom Low Floor Tom Low Tom 2 Low Floor Tom
42 Closed Hi-Hat Closed Hi-Hat Closed Hi-Hat Closed Hi-Hat
43 Low Tom High Floor Tom Low Tom 1 High Floor Tom
44 Open Hi-Hat 2 Pedal Hi-Hat Pedal Hi-Hat Pedal Hi-Hat
45 Mid Tom Low Tom Mid Tom 2 Low Tom
46 Open Hi-Hat 1 Open Hi-Hat Open Hi-Hat Open Hi-Hat
47 Mid Tom Low-Mid Tom Mid Tom 1 Low-Mid Tom
48 High Tom Hi-Mid Tom High Tom 2 Hi-Mid Tom
49 Crash Cymbal Crash Cymbal 1 Crash Cymbal 1 Crash Cymbal 1
50 High Tom High Tom High Tom 1 High Tom
51 Ride Cymbal Ride Cymbal 1 Ride Cymbal 1 Ride Cymbal 1
52 - Chinese Cymbal Chinese Cymbal Chinese Cymbal
53 - Ride Bell Ride Bell Ride Cymbal Cup
54 Tambourine Tambourine Tambourine Tambourine

TR
TR TR
TR-
--
-808 MIDI Interface
808 MIDI Interface808 MIDI Interface
808 MIDI Interface Model 8
Model 8Model 8
Model 8-
--
-448 ver. 2.0
448 ver. 2.0448 ver. 2.0
448 ver. 2.0
14
Copyright © 2005 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
Table 5 – continue
Standard Note
No. C/M Instruments GM Instruments GS Instruments XG Instruments
55 - Splash Cymbal Splash Cymbal Splash Cymbal
56 Cow Bell Cow Bell Cow Bell Cow Bell
57 - Crash Cymbal 2 Crash Cymbal 2 Crash Cymbal 2
58 - Vibraslap Vibraslap Vibraslap
59 - Ride Cymbal 2 Ride Cymbal 2 Ride Cymbal 2
60 High Bongo High Bongo High Bongo High Bongo
61 Low Bongo Low Bongo Low Bongo Low Bongo
62 Muted High Conga Muted High Conga Muted High Conga Muted High Conga
63 Open High Conga Open High Conga Open High Conga Open High Conga
64 Low Conga Low Conga Low Conga Low Conga
65 High Timbale High Timbale High Timbale High Timbale
66 Low Timbale Low Timbale Low Timbale Low Timbale
67 High Agogo High Agogo High Agogo High Agogo
68 Low Agogo Low Agogo Low Agogo Low Agogo
69 Cabasa Cabasa Cabasa Cabasa
70 Maracas Maracas Maracas Maracas
71 Samba Whistle Short Short Whistle Short High W histle Samba Whistle High
72 Samba Whistle Long Long Whistle Long Low Whistle Samba W histle Low
73 Quijada Short Guiro Short Guiro Short Guiro
74 - Long Guiro Long Guiro Long Guiro
75 Claves Claves Claves Claves
76 - High W ood Block High W ood Block High Wood Block
77 - Low Wood Block Low Wood Block Low Wood Block
78 - Muted Cuica Muted Cuica Muted Cuica
79 - Open Cuica Open Cuica Open Cuica
80 - Muted Triangle Muted Triangle Muted Triangle
81 - Open Triangle Open Triangle Open Triangle
82 - - Shaker Shaker
83 - - Jingle Bell Jingle Bell
84 - - Bell Tree Bell Tree
85 - - Castanets -
86 - - Muted Surdo -
87 - - Open Surdo -
88 - - - -
89 - - - -
90 - - - -

TR
TR TR
TR-
--
-808 MIDI Interface
808 MIDI Interface808 MIDI Interface
808 MIDI Interface Model 8
Model 8Model 8
Model 8-
--
-448 ver. 2.0
448 ver. 2.0448 ver. 2.0
448 ver. 2.0
15
Copyright © 2005 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
D. MIDI Implementation Chart
Device : TR-808 MIDI Interface Date : 4 / 2006
Model : 8-448
Version : 2.0
Function Transmission Reception Remarks
Basic
Channel
Default
Changed
X
X
10
1~16
1
)
Mode Default
Messages
X
X
Mode 3
X
Not Altered
Note Number X 12~90
2
)
Velocity Note ON
Note OFF
X
X
O
X
After
Touch
Key's
Channel's
X
X
X
X
Pitch Bender X X
Control
Changes X X
Program
Change
X 0~12
2
)
System
Exclusive
X O See System Exclusive description
System
Common
Song Position
Song Select
Tune
X
X
X
X
X
X
System
Real Time
Clock
Command
X
X
O
O
Others Local ON/OFF
All Notes Off
Active Sensing
Reset
X
X
X
X
X
X
X
X
Notes :
1
) Can be changed by SysEx Msg
2
) Numbers out of range are ignored
Mode 1 : OMNI ON, POLY
Mode 3 : OMNI OFF, POLY
Mode 2 : OMNI ON, MONO
Mode 4 : OMNI OFF, MONO
O : Yes
X : No

TR-808 MIDI INTERFACE
Model 8-448 ver. 2.01
USER MANUAL
Copyright © 2006 CHD Elektroservis
www.chd-el.cz