cs8900aVxworks驱动部分的头文件，有不少兄弟不明白PORT地址和MEM地址如何设置，问题的关键是A24地址线和对应的逻辑-cs8900aVxworks drive part of the header files, there are many brothers do not understand PORT address and how to set up MEM address the key issue is that the address line A24 and the corresponding logic