On 6/21/06, Nicolas Boulay <[EMAIL PROTECTED]> wrote:
i CC timothy because i am not sure i could wrote to the list.
we speak about ECP2-50
http://www.latticesemi.com/documents/ECP2_DataSheet.pdf
versus XC3S4000
http://www1.cs.columbia.edu/~sedwards/classes/2005/emsys-summer/ds099.pdf
Thank you for pointing to these references.
to compare it :
_______________ECP2-50______________XC3S4000
Ram block______21 1024*18 bits______94 1024*18 bits
18x18 mul______90___________________96
slice___________24k__________________6.9k
The 4000 slice figure is wrong. It has 27K slices.
(slice = 2 lut + 2 FF)
The slice definition is quite hard to compare. A ECP2 cell use 2 luts (they
called it "slice"), Xilinx slice look the same.
They're very similar, but the Xilinx ones, I think, are a bit more powerful.
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