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--- dcb [2008/05/01 14:41]
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+DCB
+===== Digital Communications Bus =====
+Prior to MIDI, this was implemented on the Roland Jupiter-8 (some units) and Roland Juno-60
+== From Hyperreal: ==
+From tmoravan@netcom.comTue May 30 10:16:25 1995\\
+Date: Tue, 30 May 1995 03:57:58 -0700 (PDT)\\
+From: Tom Moravansky <tmoravan@netcom.com>\\
+To: rbcIII <robot@crl.com>\\
+Cc: analog <analogue@hyperreal.com>\\
+Subject: Re: DCB cable pinouts\\
+Some folks have asked about the Roland DCB pinouts.  Here is what I have from
+the Jupiter-8 service manual:
+DCB Pin Configurations
+-----------------------------\\
+| 07  06  05  04  03  02  01 |\\
+| 14  13  12  11  10  09  08 |\\
+-----------------------------\\
+   (view from rear panel)
+- Busy (receive)\\
+- Data (receive)\\
+- Clock (receive)\\
+- Ground\\
+- Busy (transmit)\\
+- Data (transmit)\\
+- Clock (transmit)\\
+- unregistered\\
+- VCA lower\\
+- VCA upper\\
+- VCF lower\\
+- VCF upper\\
+- VCO-2\\
+- VCO-1\\
+There were 2 different shapes of DCB cable and 2 different types.
+Early shape was a flat cable used to connect early OP-8 converters to the
+Jupiter-8's with the OC-8 interface installed.  This was part # H146
+Later cables used the D-sub shell.
+Cable # H172 is a uni-directional cable with the signal flow indicated by the
+arrow on the connector.  Cable # H172 is wired up like this:
+|**Receiver  ** |       **Sender** |
+|   1        |        5 |
+|   2  |               6 |
+|   3    |             7 |
+|   4      |           4 |
+Cable # H165 is bi-directional.  The manual warns:  "DCB Cable H165 is a
+bi-directional cable in which sent from the TX-terminal on a unit returns to
+the RX-terminal on the unit, causing regeneration."  So, if you get regenerated
+don't say you weren't warned.
+Receiver          Sender
+------------------------
+                5
+                6
+                7
+                4
+                1
+                2
+                3
+                8
+                9
+               10
+               11
+               12
+               13
+               14
+Hope this helps.
+  _______________________________________________________________________________
+Tom Moravansky                                              tmoravan@netcom.com\\
+                             quiet electronics \\
+From squishy@bga.comTue Jun 13 12:10:01 1995\\
+Date: Tue, 13 Jun 1995 14:04:59 -0500\\
+From: Drum Machine Wanker <squishy@bga.com>\\
+To: analogue@hyperreal.com\\
+Subject: Re: MD-8/DCB (pinout info)\\
+I've done the unthinkable (for me), i've opened my DCB cable
+to finally find out the truth on the pinout.  I tried building
+one awhile back without success, I now know why.
+If you want to build your own, you'll need a piece of 15
+conductor cable, 14 wires and 1 ground.  The ground is
+what I screwed up.  You'll also need two Centronics 14
+conductor connections.
+The pinout...
+The ground is connected to the front housing snap-in
+piece.  Positions 8-14 are wired 1 to 1, that's the
+bottom row.
+Below you'll see the pinout for the top row, positions
+-7.
+|p        |          p|
+|o       |           o|
+|s      |            s |
+|i     |             i|
+|t    |              t|
+|i   |               i|
+|o  |                o|
+|n |                 n|
+|||
+|1 wire 1     |      1 wire 5|
+|||
+|2 wire 2     |      2 wire 6|
+|||
+|3 wire 3    |       3 wire 7|
+|||
+|4 wire 4    |       4 wire 4|
+|||
+|5 wire 5    |       5 wire 1|
+|||
+|6 wire 6 |          6 wire 2|
+|||
+|7 wire 7    |       7 wire 3|
+Hope this helps.
+Vince.\\
+Squishy Records
+From tmoravan@netcom.comWed Jun 14 11:49:55 1995\\
+Date: Wed, 14 Jun 1995 04:34:38 -0700 (PDT)\\
+From: Tom Moravansky <tmoravan@netcom.com>\\
+To: MARSHALLR@opsusa.sms.siemens.com\\
+Cc: analog <analogue@hyperreal.com>\\
+Subject: Re: Jupiter8: DCB vs DCIB?\\
+> \\
+> Well, since there are a couple of open threads regarding Jupiter8/MD8 \\
+> questions, I might as well jump in with my own.....\\
+> \\
+> I have a Jupiter8 that has some sort of factory interface, but I don't think \\
+> it is DCB, since it doesn't have the typical 14 pin 'D' connector up near the \\
+> "Roland" logo.  Rather it has a 20 pin IDC ribbon connector w/ a slide switch \\
+> down low, near the serial plate.  Could this be the earlier version of DCB, \\
+> known as DCIB, and can I use the MD8 or PRO4 DCB interface with it?\\
+> \\
+> Any Roland/Jupiter experts have a clue?\\
+> \\
+Well - I can't find my original DCB post, so I hope someone archived it at
+the analogue site.  Basically, it sounds like you have the Jupiter-8 version
+with the OC-8 DCB retrofit.  The earliest versions used the flat cable
+scheme.  The OP-8 (not OP-8M) cv->DCB converter has both types of DCB
+connections on it.  After some time, Jupiter-8's were made with the DCB
+stuff built in and they switched to the 'classic' d-sub connector.
+My post had the pinouts so you could make your own cables.  There were 2
+different kinds of cables - one that was only half-wired and provided one-way
+communication and the other was fully wired for 2-way traffic.
+_______________________________________________________________________________\\
+Tom Moravansky                                              tmoravan@netcom.com\\
+                             quiet electronics \\
+From fEEd@maroon.tc.umn.eduWed Jun 14 13:13:59 1995\\
+Date: Wed, 14 Jun 95 14:58:32 CST\\
+From: fEEd <fEEd@maroon.tc.umn.edu>\\
+To: analogue@hyperreal.com\\
+Subject: Re: More DCB/MSQ-700?\\
+On Wed, 14 Jun 1995 08:42:46 -0700 (PDT),
+Michael Winton  <mwinton@uclink.berkeley.edu > wrote:
+>I know the 700 can send MIDI or DCB out.  I know from reading in the \\
+>archives that it cannot "convert" MIDI to DCB.  Can I record a DCB \\
+>sequence from my Juno 60 into the MSQ-700 and then play it back, WITH the\\
+>700 "synced" to the MIDI clock?\\
+Sorry, but no.  The bastards.
+Rob
+fEEd/>tEMpESt<\http://www.umn.edu/nlhome/m211/feed/<\fEEd@maroon.tc.umn.edu/>
+  "FILTER MAINTENANCE- After every 100 hours of operation apply a sine wave
+  to the output of the FILTER to back flush the trapped overtones to unclog
+  your filter."                                            - EML 101 Manual
+===== Links: =====
+http://www.chd-el.cz/index.php?id=93&lngid=en
+http://www.chd-el.cz/index.php?id=312&lngid=en
+http://mkv.itm.miun.se/personal/per/diy/DCB/DCB.html

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