Philips ARM LPC2100 的I/O口程序，别小看这段通用接口程序，这里面包含了完整的启动代码，而且是汇编和C对照的，希望对硬件编程的朋友有帮助，因为当时我就位了启动代码学习了好一阵子，才算学会。-the I/O procedures Do not underestimate this common interface, which contains a complete boot code, but is the compilation and C contrast to the