FPGA逻辑设计注意事项， 这是一个在逻辑设计中注意事项列表，由此引起的错误常使得设计不可靠或速度较慢，为了提高设计性能和提高速度的可靠性，必须确定设计通过所有的这些检查。-FPGA logic design considerations, this is a note in the list of logical design, which often makes the design errors caused by unreliable or slow, in order to impro