<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<p>Hi all,<br>
</p>
<p><br>
</p>
<p>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 <br>
</p>
<p>the German Magazine "Funkschau".</p>
<p><a class="moz-txt-link-freetext" href="http://studiorepair.com/gallery/Doepfer/MCV1/slides/Doepfer_MCV1_PCB_CS__STUDIOREPAIR_08031701_0803193972.html">http://studiorepair.com/gallery/Doepfer/MCV1/slides/Doepfer_MCV1_PCB_CS__STUDIOREPAIR_08031701_0803193972.html</a></p>
<p><a class="moz-txt-link-freetext" href="https://doepfer.de/alte_anl.txt/MCV1_V1.txt">https://doepfer.de/alte_anl.txt/MCV1_V1.txt</a></p>
<p><a class="moz-txt-link-freetext" href="http://www.pc1ha.franken.de/habel/musik_03.htm">http://www.pc1ha.franken.de/habel/musik_03.htm</a></p>
<p><br>
</p>
<p>Best,</p>
<p> René<br>
</p>
<p><br>
</p>
<p><font face="Comic Sans MS" color="#FFFFFF">BestJürk Habel und
Dieter Do</font></p>
<p><font face="Comic Sans MS" color="#FFFFFF">epfer, MIDI-Interface
für Oldtimer, Funkschau Hefte 9/89, 10/89 und 11/89,
Franzis-Verlag, München</font></p>
<div class="moz-cite-prefix">Am 28.09.2022 um 12:36 schrieb Mike
Bryant:<br>
</div>
<blockquote type="cite"
cite="mid:431be29ba67d45199cde3eb23c840013@futurehorizons.com">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="Generator" content="Microsoft Word 14 (filtered
medium)">
<style>@font-face
{font-family:Helvetica;
panose-1:2 11 6 4 2 2 2 2 2 4;}@font-face
{font-family:Helvetica;
panose-1:2 11 6 4 2 2 2 2 2 4;}@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}p
{mso-style-priority:99;
mso-margin-top-alt:auto;
margin-right:0cm;
mso-margin-bottom-alt:auto;
margin-left:0cm;
font-size:12.0pt;
font-family:"Times New Roman","serif";}pre
{mso-style-priority:99;
mso-style-link:"HTML Preformatted Char";
margin:0cm;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";}span.HTMLPreformattedChar
{mso-style-name:"HTML Preformatted Char";
mso-style-priority:99;
mso-style-link:"HTML Preformatted";
font-family:Consolas;}span.EmailStyle20
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}div.WordSection1
{page:WordSection1;}</style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
<div class="WordSection1">
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">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.
<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #B5C4DF
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif""
lang="EN-US">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif""
lang="EN-US"> Synth-diy
[<a class="moz-txt-link-freetext" href="mailto:synth-diy-bounces@synth-diy.org">mailto:synth-diy-bounces@synth-diy.org</a>]
<b>On Behalf Of </b>René Schmitz<br>
<b>Sent:</b> 28 September 2022 11:29<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:synth-diy@synth-diy.org">synth-diy@synth-diy.org</a><br>
<b>Subject:</b> Re: [sdiy] Identification of an unknown
MIDI CV interface<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Hi all,<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">On 28.09.2022 11:30, Ingo Debus via
Synth-diy wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class="MsoNormal"><a
href="https://florian-anwander.de/moog_prodigy/Unknown_Midi_Interface.jpg"
moz-do-not-send="true"><span
style="font-size:10.5pt;font-family:"Helvetica","sans-serif"">https://florian-anwander.de/moog_prodigy/Unknown_Midi_Interface.jpg</span></a><o:p></o:p></p>
</div>
</blockquote>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">The etched PCB looks like a general
purpose board. The MIDI stuff and the DAC are on the perf
board.<o:p></o:p></p>
</div>
</blockquote>
<p>That's what I was thinking too, but what is interesting is
that the logo on the EPROM matches the one on the board.
<o:p></o:p></p>
<p>So Hardware and Firmware seem to be from the same origin.<o:p></o:p></p>
<p>But the rest seems very bespoke and has a high home brew
appeal. This doesn't quite fit to me, because who
<o:p></o:p></p>
<p>ever wrote the firmware would know what hardware to drive.<o:p></o:p></p>
<p><o:p> </o:p></p>
<p><o:p> </o:p></p>
<p>Best,<o:p></o:p></p>
<p> René<o:p></o:p></p>
<p><o:p> </o:p></p>
<pre>--<o:p></o:p></pre>
<pre><a href="mailto:synth@schmitzbits.de" moz-do-not-send="true" class="moz-txt-link-freetext">synth@schmitzbits.de</a><o:p></o:p></pre>
<pre><a href="http://schmitzbits.de" moz-do-not-send="true" class="moz-txt-link-freetext">http://schmitzbits.de</a><o:p></o:p></pre>
</div>
</blockquote>
</body>
</html>