fpga中经常用到ram和rom，更多人只会拿着乱用，不懂其真正原理，本文档详细说明了，fpga中rom和ram的时序和怎么使用！-fpga ram and is often used rom, holds more people will mess with, do not understand its true principles, this document details, fpga in the rom and ram timing and how to use!

Spartan6　FPGA中的块存储器使用指南，可以构建为FIFO，ROM，RAM，移位寄存器等。-Spartan6 FPGA block memory in the User Guide, you can build for FIFO, ROM, RAM, shift registers and so on.