Roland TR-808 - Page 7

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.