Reverse-engineering the first FPGA chip, the XC2064

.hilite {cursor:zoom-in} A Field-Programmable Gate Array (FPGA) can implement arbitrary digital logic, anything from a microprocessor to a video generator or crypto miner. An FPGA consists of many logic blocks, each typically consisting of a flip flop and a logic function, along with a routing network that connects the logic blocks. What makes an FPGA special is that it is programmable hardware: you can redefine each logic block and the connections between them. The result is you can build a...