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<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">Hi!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">Yes, also the Crumar Bit One uses 8051/8031 microcontrollers!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">8051 for keyboard decoding, 8031 for the synth control.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">Schematics are here:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D"><a href="https://ia800302.us.archive.org/8/items/synthmanual-crumar-bit-1-schematics-late-revision/crumarbit-1schematicslaterevision.pdf">https://ia800302.us.archive.org/8/items/synthmanual-crumar-bit-1-schematics-late-revision/crumarbit-1schematicslaterevision.pdf</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D"><a href="https://ia800308.us.archive.org/2/items/synthmanual-crumar-bit-1-schematics-early-revision/crumarbit-1schematicsearlyrevision.pdf">https://ia800308.us.archive.org/2/items/synthmanual-crumar-bit-1-schematics-early-revision/crumarbit-1schematicsearlyrevision.pdf</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">Ciao<br>
Peter<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D"><a href="http://www.ullrich.at.tt">http://www.ullrich.at.tt</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span lang="DE" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Von:</span></b><span lang="DE" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Synth-diy [mailto:synth-diy-bounces@synth-diy.org]
<b>Im Auftrag von </b>Tony K<br>
<b>Gesendet:</b> Dienstag, 24. Jänner 2017 04:55<br>
<b>An:</b> <synth-diy@synth-diy.org><br>
<b>Betreff:</b> Re: [sdiy] Crumar bit one EPROM .bin anyone<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">This reminds me of the Jupiter-6 version 2 that powered up in Omni mode. The trick was to connect a Midi cable from Out to In on power up to make it respond on Ch.1 .<o:p></o:p></p>
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<p class="MsoNormal">You could always try that.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">If course a firmware upgrade is best.<o:p></o:p></p>
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<p class="MsoNormal">Sorry can't help you with that, short of disassembling and modifying the code yourself if you have that ability or motivation. On the JP-6 it's pretty straight forward. Do you know if the Bit One used an 8051? Most synths of that era used
either a Z80 or 8051.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">TK<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
On Jan 23, 2017, at 3:23 PM, "Luc Van Den Bosch" <<a href="mailto:luc.ky@telenet.be">luc.ky@telenet.be</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span lang="EN-US">Hi all, I have a Crumar bit one and that synth has the annoying “feature” to be in midi omni mode when you switch it on.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">It should be possible to disable omni with parameter 64 and 65 but that doesn’t work on my bit one which apparently means I have an older version of the firmware (parameter 64 and 65 don’t show any value and it should
be 1 or 0).</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Does anyone have the binaries for the 2 EPROM to share?</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">I found downloads here: <a href="http://dbwbp.com/index.php/9-misc/37-synth-eprom-dumps">
http://dbwbp.com/index.php/9-misc/37-synth-eprom-dumps</a> but the version seems to be the same because also with this version parameter 64 and 65 are not shown.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Thanks!</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Luc</span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">_______________________________________________<br>
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