DSP中的扩展IO口的算法，基于TI公司的5509这款芯片文件列表: Lab05-IOPort ............\c5509.h ............\clk_init.c ............\Debug ............\Debug.lkf ............\Debug.lkv ............\ICETEK-VC5509-A.cmd ............\ICETEK-VC5509-EDU.h ............\IOPort1.paf ............\IOPort1.pjt ............\IOPort2.c ............\IOPort2.paf ............\IOPort2.pjt ............\Ioport2程序.txt ............\scancode.h ............\sdram_init.c……