Watch kingstacker/spi

Spi protocol: include spi_ms and spi_sm file

Watch kingstacker/vga

vga driver;条纹和静态图片显示

Watch kingstacker/dual_io

Dual io descripted by verilog

Watch kingstacker/fifo

8*8同步fifo和异步fifo，用Verilog语言描述。

Watch kingstacker/ram

Verilog语言描述一个ram

Watch kingstacker/iir