ADC8350 - add MIDI for capture action?

[mlaird]

My mom has an ADC8350 (large 3m drawknob console), which has MIDI for note information, but none for the stops or capture action. Her instrument has four memories, labeled A-D. I have seen on this forum that the Zuma Group makes a drop-in replacement for the DM capture board which adds MIDI to the stop system, but I couldn't find out whether or not my mom's organ uses that DM capture board or not. How can I tell?

[samibe]

The Zuma Group board replaces a Dual Memory (DM) board. I don't think it will work with your mom's quad memory organ.

[michaelhoddy]

I actually have a similar related question. The 8350 and some of the later larger x000 Allens use the USCM board (and quad capture) in place of the earlier DM-series dual capture boards. Does anyone make a MIDI solution that works with the USCM?

[Admin]

I had hoped to develop a similar product for the ADC quad memory system, but the information in the technical manual is insufficient to even start a design, and I don't have an ADC model to reverse engineer.

Even if these obstacles didn't exist, I'm not sure whether a universal/cross model design would be possible as the mapping between the multiplexed data and the stops is in specification specific eproms. For the bi-directional control provided by Zuma MIDI Stop controller, it would be necessary to read the multiplexed stop data to determine the stop status, and, a bit more challenging, insert data into the data stream controlling the stops.

[AllenAnalog]

Admin, thanks for answering a question that has been lingering in my mind for a couple of years. I've wondered about the technical details of intercepting the data stream into and out of the USCP-2 quad memory board with something that could interface with MIDI, like Allen does with their note-only MIDI board. Both the USCP-2 capture board and the USCM-2 console multiplexer board have model-specific EPROMs with stop map information on them.

P.S. mlaird, you mom has a most impressive instrument. I'd love to find one of that model some day.

P.P.S Perhaps Michael (myorgan) would loan one of his ADC organs to you for reverse engineering.

[myorgan]

P.P.S Perhaps Michael (myorgan) would loan one of his ADC organs to you for reverse engineering.

Larry,

Unfortunately, only one has quad capture, and it's in the church where I play regularly. I could have loaned Admin my ADC-8000 while it was in his area, but also unfortunately, it's in the other corner of the USA now! I do have a MIDI card to add to it when my garage is done.

I agree with the sentiment regarding the ADC-8350. For me, it's the penultimate instrument Allen made in its classical organ history. It's the holy grail I'll probably never see.:'( Oh, well.

Michael