I need another dev kit

Recently, I got given an FPGA development kit to continue working on my SHA1 system. The end-goal is to eventually integrate that into a PCI-E card, but we’ll see how that works out.


The FPGA kit I have is the Digilent Basys2, and it uses a Xilinx Spartan 3E chip. The lowest-tier, 100k gate model.


I’ve updated the current code, here, consisting of the parallel behavioral SHA1 implementation, a serial input wrapper that parallelizes the data and acts as an interface, a simulation testbench, and a physical testbench specific to my board. Unfortunately, this code, which is the absolute simplest building block of the final project is about 600% too large for my dev board. It takes up about 12,000 logical slices, and the Spartan 3E version I have only has about 2,000. For further reference, a Papillio Pro, which is very popular right now, uses a version of the Spartan 6 family that has about 9,000 slices.

My goal right now is to, without spending a whole lot of money, to get a development board, or even a bare FPGA on a breakout board with at least 15,000 slices so that I can benchmark this implementation of the algorithm. After I do that with the first iteration, I can write a concurrent version, benchmark it, and start tweaking. I’d really like to get into low-level optimization.

Stretch goals involve getting a massive FPGA to do a lot more with, but those can start to run upwards of $150 just for the chip alone.

I don’t even need to keep these boards, I just need to use them briefly as a proof-of-concept.

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