单片机读写NAND flash程序，里面包括读，写，擦除-Single-chip NAND flash read and write procedures, which include reading, writing and erasing

本文件为用Verilog写的FLASH S29AL032D读和擦除的驱动时序，对刚学习Verilog的同学有一定帮助，已在DE2开发板上验证。-This document is written in Verilog FLASH S29AL032D read and erase the drive timing of the students just learning Verilog will definitely help, has