[sdiy] OOOOPS!!!! (Top octave CPLDs)

[Ken Stone]

I was giving this some thought myself back when you were first discussing
this beast, and I think it was the same conclusion I came to, though I never
got around to you writing about it.

The only other posibility, which is probably too specific, would be to put a
pair of multiplexers on there, along with a single division chain, so you
could select a particular note/octave using a binary input. That would be
good for "DCO" type usage. I did it myself back in '84 using a regular TOS
and a few CMOS chips.  With your split system, it may be better just to go
for the extra 2 octave of outputs.

Ken

>Sorry about that folks!  Was editing a message and hit
>the wrong button.
>
>I was taking a look at my TOG CPLD design and noticed
>I have a few cells left in each chip. This is enough
>to provide 2 dividers for each output note, so the
>TOGs would provide 3 octaves of notes. Does this sound
>right? Or is there something else I should use the
>extra space for?
>
>--TR
>
>
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_______________________________________________________________________
Ken Stone   sasami at hotkey.net.au  
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
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