[sdiy] More Xilinx 3E board comments

[James Patchell]

Yes!....and more....

For instance...You could easily build up a bank of 512 NCO sawtooth 
oscilators...and it would barely be a hicup...with a sample rate of 
97656.25hz @ clk=50MHz...

why 512 oscillators?....because the RAM blocks can be configured as 512wx32b

You would need two banks of these to make an NCO...one for the frequency 
control, and the second for the accumulators...

You then just need a 32 bit adder...and there you go....


Sampler...the thing has 32MB of ram on board...and 16MB of flash rom....

filters...4 ram banks and you would have 512 biquad filters...(Frequency, 
Q, Z1,Z2) (well, I hope 4 ram banks would do it :-)

.....

It only takes TIME!


At 01:56 PM 6/8/2006 -0400, Jeff Farr wrote:
>So, I'm getting very interested in this whole FPGA thing, but I seem
>to be right on Scott's level in terms of having any idea at all what
>they are about.  I can boil all my questions down to this tho: could I
>implement a simple sampler using the 150$ option?  How about a full
>blown sampler?  With analog modeled filters? ... ;)

         -Jim
***************************************************************
Come to the 2006 Pacific Southwest Synth DIY meet
June 10, 2006 at the Goleta Library....

Details:
http://www.oldcrows.net/~patchell/synthdiymeet.html
***************************************************************
http://www.oldcrows.net/~patchell
http://www.noniandjim.com/
***************************************************************