squantor
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Comment · 1 month ago
Comment · 1 year ago
This really sounds like the Xilinx XC6200 series FPGA. It has a few routing hierarchies but does strip out most of the routing a classical (for that time) FPGA has. I heard numbers that 70% of a FPGA is routing.
The XC6200 became news once as they[1] used an evolutionary algorithm to create a configuration that can detect a single frequency tone. The resulting configuration was determined that it was impossible that it could work, but it did. Placing the configuration in a different part of the FPGA broke it.
It seemed that algorithm used the analog properties of the FPGA in that specific location to get to a smaller result.
[1] https://www.idi.ntnu.no/emner/tdt22/2011/Thompsonieeeehw.pdf
http://www.aholme.co.uk/GPS/Main.htm
The combination of RF electronics and then doing the signal processing in an FPGA for the timing critical stuff and the actual DSP with a raspberry pi, very interesting.