在分析单地址空间操作系统的优点及其所存在问题的基础上,提出了无地址空间操作系统的思想,并介绍了一个无地址空间操作系统原型.在无地址空间操作系统中,没有进程虚拟空间的概念,指令直接对文件寻址,进程直接在文件上运行.与单地址空间操作系统相比,无地址空间操作系统不仅具有单地址空间操作系统的优点,而且能够避免单地址空间操作系统中存在的不足.%In this paper, based on the discussion of SASOS (single-addressspace operating system), as well as its advantages and disadvantages, the concept and principle of NASOS (no-address space operating system) is put forword and a NASOS prototype is discussed. In the NASOS, there is no process virtual address space, instructions access files directly and processes run on files. Compared with SASOS, not only does NASOS have the advantages of SASOS, but also avoids its disadvantages.
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