MOTM

OK, for those who want a glimpse into "knob and LED insanity" here are a
few hastily-taken pictures of the only piece of the behemoth DX-7 patch
programmer ("DXPatchMaster") I still have in my possession.  This first
picture is of the front, showing the following controls/displays:

http://oldcrows.net/~oldcrow/synth/crow/DXPatchMaster.jpg

  Controls and displays:

  00-99 00-99 00-99 00-99 00-99 00-99 00-99 00-99 00-99
    R1    L1    R2    L2    R3    L3    R4    L4  Output-Level


  0000-nnnn LED/LED  0-7    00-99  00-99  00-99  00-99
  Frequency Ratio/Hz Detune Brkpt.   L<Depth>R    AMS

   switch  switch   0-3 0-3  0-7  0-7              1-6
   on/off  Ratio/Hz  L   R   Kbd  Velocity         Operator #
 (operator)          Curve   rate
                             scaling


http://oldcrows.net/~oldcrow/synth/crow/DXPatchMaster2.jpg

  The back side, showing the circuit cards (Bishop Graphics-taped
artwork, using about 300 meters of tape :)  and about 2 miles of ribbon
cables.

  Cards are,left to right, display driver, knob digitizer, CPU card, power
supply/MIDI interface/ "panel ID" selector for the MIDI-hub scheme.

  Remember, there were six of these "operator" panels and one "everything
else" panel.

  I would make this thing sooooooo much differently today...

    --Crow

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