[sdiy] Top Octave Synthesizer

[René Schmitz]

Seb Francis wrote:
> The PIC16C54 used in this design would also work with a 32MHz crystal 
> instead of 16MHz which would bump it up an octave.

I'd port/rewrite it for the AVR. These PICs do use (mostly) 4 clock 
cycles per instruction (they misleadingly claim "single cycle", talking 
about machine-cycles, not clock-cycles, hello marketing...). While the 
AVR truely uses (mostly) 1 cycle per instruction  So an AVR @ 10Mhz 
would have the instruction rate of a PIC16XXX @ 40Mhz.... (Don't get me 
started about the PICs instruction set...) And there are AVRs that can 
be clocked with up to 20MHz, and maybe some more with overclocking.

Cheers,
  René

-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159