[sdiy] Identification of an unknown MIDI CV interface

[S Ridley]

It was also published in Elektor, February 1991, but with a different pcb
layout.


Steve


On Wed, 28 Sept 2022 at 12:12, René Schmitz <synth at schmitzbits.de> wrote:

> Hi all,
>
>
> I've goggled a bit and it seems this is a clone of the Doepfer MCV1, which
> apparently was published as a set of articles in
>
> the German Magazine "Funkschau".
>
>
> http://studiorepair.com/gallery/Doepfer/MCV1/slides/Doepfer_MCV1_PCB_CS__STUDIOREPAIR_08031701_0803193972.html
>
> https://doepfer.de/alte_anl.txt/MCV1_V1.txt
>
> http://www.pc1ha.franken.de/habel/musik_03.htm
>
>
> Best,
>
>  René
>
>
> BestJürk Habel und Dieter Do
>
> epfer, MIDI-Interface für Oldtimer, Funkschau Hefte 9/89, 10/89 und 11/89,
> Franzis-Verlag, München
> Am 28.09.2022 um 12:36 schrieb Mike Bryant:
>
> Maybe the original design on the etched PCB was a general purpose MIDI
> board (hence the matching firmware) and provided an 8 bit GPIO port, but
> disobeyed the rules and omitted the opto-isolator, so whoever used it added
> that as well as the DAC they needed for this design on the perfboard.
>
>
>
> *From:* Synth-diy [mailto:synth-diy-bounces at synth-diy.org
> <synth-diy-bounces at synth-diy.org>] *On Behalf Of *René Schmitz
> *Sent:* 28 September 2022 11:29
> *To:* synth-diy at synth-diy.org
> *Subject:* Re: [sdiy] Identification of an unknown MIDI CV interface
>
>
>
> Hi all,
>
>
>
> On 28.09.2022 11:30, Ingo Debus via Synth-diy wrote:
>
>
>
>
>
> https://florian-anwander.de/moog_prodigy/Unknown_Midi_Interface.jpg
>
>
>
> The etched PCB looks like a general purpose board. The MIDI stuff and the
> DAC are on the perf board.
>
> That's what I was thinking too, but what is interesting is that the logo
> on the EPROM matches the one on the board.
>
> So Hardware and Firmware seem to be from the same origin.
>
> But the rest seems very bespoke and has a high home brew appeal.  This
> doesn't quite fit to me, because who
>
> ever wrote the firmware would know what hardware to drive.
>
>
>
>
>
> Best,
>
>  René
>
>
>
> --
>
> synth at schmitzbits.de
>
> http://schmitzbits.de
>
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