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<DIV><SPAN class=788000622-10092023>Thanks for the responses.</SPAN></DIV>
<DIV><SPAN class=788000622-10092023></SPAN> </DIV>
<DIV><SPAN class=788000622-10092023>Brian, I actually left the three
highest-priority inputs unconnected. I only needed 0 through 12 for my
circuit, so I left 13, 14 and 15 unconnected. As I said, grounding them
fixed the circuit, and it works perfectly now, even though many of the buffer
output busses are hi-Z during operation.</SPAN></DIV>
<DIV><SPAN class=788000622-10092023></SPAN> </DIV>
<DIV><SPAN class=788000622-10092023>Also, I needed tri-state buffers because
many of the encoder inputs are connected to multiple buffers.</SPAN></DIV>
<DIV><SPAN class=788000622-10092023></SPAN> </DIV>
<DIV><SPAN class=788000622-10092023>There is no schematic, but basically it is
Scale Logic for a quantizer. The quantizer circuit sends a binary number
to a decoder (CD4514) which generates an integer. This integer gets sent
to buffers. The buffers are hard wired to convert chromatic notes to
diatonic notes. For example, for the Major scale, there are buffers
connecting 1 to 2, 2 to 4, 3 to 5, 4 to 7, 5 to 9, and 6 to 11.
(Note: 0 is hardwired to 0, as the tonic note is always 0, so no logic
is required there). Hence, when the Major scale is selected, only the 2,
4, 5, 7, 9 and 11 busses will be active (as well as the 0 input, which
comes directly from the 4514). The 1, 3, 6, 8, 10 and 12 busses will all
be hi-Z. These busses are hardwired to the encoder circuit, which
converts them back to binary and sends them to a DAC.</SPAN></DIV>
<DIV><SPAN class=788000622-10092023></SPAN> </DIV>
<DIV><SPAN class=788000622-10092023>As I mentioned, the circuit now works
perfectly with only the 13, 14 and 15 inputs grounded, but I have redesigned one
of the PCBs to add 10k pulldown resistors to all 12 busses. Hence, when
(if) I build this module again, I will do it right.</SPAN></DIV>
<DIV><SPAN class=788000622-10092023></SPAN> </DIV>
<DIV><SPAN class=788000622-10092023>I'm going to make a brief YouTube video
demonstrating this module, probably later today, so look out for that if you are
interested. It will be called Sketchy Labs New Folding Quantizer Part 2
(Part 1 was about the prototype I built for the other guy, that miraculously
worked even with those three 4532 inputs disconnected).</SPAN></DIV>
<DIV><SPAN class=788000622-10092023></SPAN> </DIV>
<DIV><SPAN class=788000622-10092023>Cheers,</SPAN></DIV>
<DIV><SPAN class=788000622-10092023>Dave</SPAN></DIV></BODY></HTML>