What's inside an FPGA, explained with a Tang Nano 9K
Notes for people coming from Arduino and ESP32: IOBs, CLBs, LUTs and where the bitstream lives.
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I built a small RISC-V computer inside a Tang Nano 9K FPGA
I built a small RISC-V computer inside the Gowin GW1NR-9 FPGA on a Tang Nano 9K, a board that costs around $15 to $20, using only open-source tools: Yosys, nextpnr, Apicula and openFPGALoader. It ende
Why AES does its byte math in GF(2⁸), with a step-through multiplier
Most AES tutorials either wave at the math ("shift left and XOR with 0x1B") or jump straight into ring theory without tying it back to bytes. I wrote up notes from Christof Paar's AES lectures that tr
