一个有关微内核架构实现的project，是澳大利亚新南维尔士州立大学计算机工程学院开设的高级操作系统中的实践部分，比较不错，值得一看。-A micro-kernel architecture to achieve the project, is Australia s new sodra vi Wales State University School of Computer Engineering high-level operating system offered by the pract

same packing as _twocoord, but can use aos swizzle helper.