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List Info
Thread: Fully unrolled RC5 on FPGA
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| Fully unrolled RC5 on FPGA |
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2006-11-15 18:05:37 |
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If we will use a microcontroller to control the FPGA, an AVR would be much better than a PIC for many reasons:
*more register space
*a GCC port
*higher speed.
Notice that we got to the FPGA before Folding at Home!
On 11/15/06, gmeurice dice.ucl.ac.be">gmeuricedice.ucl.ac.be < gmeuricedice.ucl.ac.be">gmeuricedice.ucl.ac.be
> wrote:Bonjour,
Tuesday, November 14, 2006, 8:41:25 PM, you wrote:
JLB> Hi Guerric,
JLB> Any chance I can get you go target your design to an XCV2000E-6BG560C
JLB> and tell me if it fits and what the clock rate estimate is?
JLB> It's just a data point for me to compare two year old data to the XCV4LX
JLB> numbers.
JLB> Thanks,
JLB> John
Ok, I can do that.
The design will need 4 times the number of bRAMs compared with the
Virtex4 design: 16-bit data width and no "read before write"; mode.
With this kind of RAMs, a register on the B signal of the KeySchedule
bloc could be saved using the fact that input is mirrored to the
output of the bRAM while writing. I currently don't plan to make this
optimization. (this would mean a saving of 26*3 *32/2 = 1250 Slices).
Whatever, it is probably bad from a place&route point of view.
I will test the full design with the new long shift register and will
provides the implementation results.
--
Guerric
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