MINIX＋1．0操作系统实验环境设计与实现

Design and Implementation of MINIX+1.0,an Experiment Environment of Operating System

ＮＩＮＩＸ＋１．０操作系统实验环境是我们对美国知名学者Ａ．Ｓ．ＴＡＮＥＮＢＡＵＭ１９８６年编制的分时多任务多用户操作系统ＭＩＮＩＸ研制的改进版。和ＭＩＮＩＸ初版相比，ＭＩＮＩＸ＋１．０具有进程对换，假脱机Ｉ／Ｏ，扩展内存的管理等许多新功能。本文从功能结构，实现原理，用户环境等几个方面对ＭＩＮＩＸ＋１．０作了论述。

MINIX+ 1.0 is a modified and augmented version of MINIX,a timesharing,multitask,multiuser operating system developed by A,S.Tanenbaum in 1986.As com-pared with MINIX, MINIX+ 1.0 has many new functions,such as process swapping,spooling, management of extended memory,driver of 3.5″floppy disk,et al. MINIX+1.0 can run on IBM PC series computer.As regards to user interface,it is the sameas UNIX V7 operating system:both of them have basically the same system callsand shell commands,But their internal structures are very different.MINIX+ 1.0 hashierarchical architecture,its cornponents communicate by message-passing mechanism.its construction is clear and exsy to understand and modify and extend.And, it pro-vides souce code of the whole svstem and shell utilities.Therefore,MINIX+1.0 canprovide a good model experiment environment for graduates to study operating systemcouse systematically,On April.1992,MINX+1.0 passed authentication of an expertgroup. The design and implementation of MINX+1.0 are described in detail in this pa-per.