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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) | ||
+ | |||
+ | |||
+ | |||
+ | 1 - Busy (receive)\\ | ||
+ | 2 - Data (receive)\\ | ||
+ | 3 - Clock (receive)\\ | ||
+ | 4 - Ground\\ | ||
+ | 5 - Busy (transmit)\\ | ||
+ | 6 - Data (transmit)\\ | ||
+ | 7 - Clock (transmit)\\ | ||
+ | 8 - unregistered\\ | ||
+ | 9 - VCA lower\\ | ||
+ | 10 - VCA upper\\ | ||
+ | 11 - VCF lower\\ | ||
+ | 12 - VCF upper\\ | ||
+ | 13 - VCO-2\\ | ||
+ | 14 - 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 | ||
+ | ------------------------ | ||
+ | 1 5 | ||
+ | 2 6 | ||
+ | 3 7 | ||
+ | 4 4 | ||
+ | 5 1 | ||
+ | 6 2 | ||
+ | 7 3 | ||
+ | 8 8 | ||
+ | 9 9 | ||
+ | 10 10 | ||
+ | 11 11 | ||
+ | 12 12 | ||
+ | 13 13 | ||
+ | 14 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 | ||
+ | 1-7. | ||
+ | |||
+ | |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 |