论文部分内容阅读
国产DJS-200系列磁盘控制器已经研制成功,在主要技术性能上它做到了和IBM 2314兼容。本文结合设计和调试过程的实践,扼要地叙述了这种磁盘控制器的功能、特点、技术特性、微指令和逻辑结构、分调自检功能和经济性评价等方面的主要技术问题。 为适应多种用户对所处理的信息量日益增加的需要以及软件系统的发展,在学习和参考国外样机的基础上结合国内情况而研制的DJS-200磁盘控制器已经完成了设计、调试和技术鉴定工作。它可配接到DJS-200系列各档计算机上,可带29MB磁盘机四台同时工作,采用了微程序技术,复盖了EC 55616的绝大部分功能,在磁道上的数据格式、命令的设置、状态字节及断定字节的反映等方面和IBM 2314相同(断定字节中前六个字节相同,200系列盘控增加了四个字节以增加纠错的功能)。在DJS-200系列盘控上实现了用推广法尔码对可变记录长度中任意不大于11位的单个突发性错误进行纠正的新技术,这对于提高磁盘存贮器的可靠性、对促进国内盘组的推广应用都有重要的意
Domestic DJS-200 series disk controller has been successfully developed, it is done in the main technical performance and IBM 2314 compatible. In this paper, the design and debugging process of practice, a brief account of the disk controller features, features, technical characteristics, microinstructions and logical structure, the function of self-tuning and economic evaluation of the major technical issues. In order to meet the increasing need of information handled by many users and the development of software system, DJS-200 Disk Controller, which has been developed on the basis of learning and making reference to foreign prototypes, has completed the design, debugging and technology Identification work. It can be connected to each file of DJS-200 series computer and can work with 29MB disk drive at the same time. It adopts micro-program technology and covers most functions of EC 55616. The data format on the track, command Settings, status bytes, and assertion of bytes in the same way as the IBM 2314 (concluding that the first six bytes in the byte are the same and the 200 series adds four bytes in order to increase error correction). In the DJS-200 series of disk-based control achieved with the promotion of Falck on the variable length of any variable not more than 11 a single burst of errors to correct the new technology, which is to improve the reliability of disk storage, Promote the promotion of the domestic disk group have important implications