啊，我前段时间编这个，当时晕的，用verilog做SD卡的例子网上很少，我当时找了好多C语言的，主要是知道发送命令的顺序和控制流程，你可以先做好SPI部分，运用C程序的发送命令顺序，把SD卡初始化，提取SD卡特定寄存器看成不成功，其实只要SPI时序没问题，一般没问题，之后用Winhex看看你的SD卡的FAT系统，网上有学习用的资料，好好算算数，之后应该可以做到直接读写SD卡，但若想随意读写SD卡工作量太大了，我还没这勇气-Ah, I make this a while ago, at that time, faint, SD card example using verilog do seldom online, I was looking for a lot of C language, mainly know the order of sending command and control process, you can just do SPI part, using the C program to send the command sequence, the SD card initialization, extract the SD carter register as you don t succeed, in fact, as long as SPI timing problem, generally no problem, then use Winhex see your SD card FAT system, online learning with data, to calculate arithmetic, after SD card should be able to do it directly, speaking, reading and writing, but to read and write at random SD card workload is too big, I haven t the courage