For FPGAs, the general rule is that "flip‐flops are free and combinatorial logic costs."

FPGA synthesis tools synthesize OneHot State Machines for smaller FSM designs by default,regardless of the state encoding included in the RTL code.

「FPGA全称为“现场可编程门列阵”，是一种半定制、可编程的芯片。一名行业分析人士将FPGA比喻为芯片中的“乐高积木”，其最显著的优势在于，下游用户可以直接通过硬件编程改变芯片的逻辑功能」

Developing code for an FPGA is actually describing how the above pieces are configured and interconnected.