[sdiy] PolyDaWG6

[Scott Gravenhorst]

PolyDaWG6 is the 6 voice version of my polyphonic string model synth (it
actually does convincing drums too).  

Equivalent gate count for the design is 1,280,766.

Using a Xilinx Spartan-3E (XC3S500E), the design uses only one multiplier,
but all of the block RAM (19).  The MIDI controller uses less than one half
of a dual port block RAM so there is a 1/2 block RAM usable for another
feature.  

At this time, the MIDI controller provides a "always sustain" action, but I
plan to change this to a more piano like action and include the MIDI
sustain pedal.

I have some code cleanup and other maintenance to do, then I will find a
piece of music to make a demo using only the one dev board.  Once all of
that is done, I'll post it to http://www.fpga.synth.net/ in the Wiki.

-- ScottG

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-- Scott Gravenhorst
-- GateMan I - Xilinx Spartan-3E Based MIDI Synthesizer
-- FatMan: home1.gte.net/res0658s/fatman/
-- NonFatMan: home1.gte.net/res0658s/electronics/
-- When the going gets tough, the tough use the command line.