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Virtual I/O, an experiment 虚拟I/O，一个实验
MICRO 12 Pub Date : 1979-11-18 DOI: 10.1145/1014188.803019
Ronald L. Hartung, Anne B. Ammerman
{"title":"Virtual I/O, an experiment","authors":"Ronald L. Hartung, Anne B. Ammerman","doi":"10.1145/1014188.803019","DOIUrl":"https://doi.org/10.1145/1014188.803019","url":null,"abstract":"This paper describes an experiment in virtualizing Input/Output (I/O) for allowing new I/O technologies, such as ARPANET, to replace old hardwired interface disciplines. This was accomplished using micro-programmable host machines, emulation, and virtual machine concepts. The I/O system under study was the Naval Tactical Data System interface which is a U.S. Navy standard.","PeriodicalId":334800,"journal":{"name":"MICRO 12","volume":"7 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120814439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hardware and software tools for the development of a micro-programmed microprocessor 用于开发微程序微处理器的硬件和软件工具
MICRO 12 Pub Date : 1979-11-18 DOI: 10.1145/1014188.803015
James Nash, M. Spak
{"title":"Hardware and software tools for the development of a micro-programmed microprocessor","authors":"James Nash, M. Spak","doi":"10.1145/1014188.803015","DOIUrl":"https://doi.org/10.1145/1014188.803015","url":null,"abstract":"This paper discusses the development and implementation of a number of hardware and software tools used in the design, development, and debugging of the microcode and nanocode for the MC68000 microprocessor. A functional description of these tools is included as well as an analysis of how each worked with respect to solving the desired problem (ie., generating correct microcode and nanocode). Peculiarities in the integrated circuit industry for microcode verification is considered as well as the automated process of error detection and correction.","PeriodicalId":334800,"journal":{"name":"MICRO 12","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125076509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Design and implementation of a flexible and interactive microprogram simulator 一个灵活的交互式微程序模拟器的设计与实现
MICRO 12 Pub Date : 1979-11-18 DOI: 10.1145/1014188.803010
M. Mezzalama, P. Prinetto
{"title":"Design and implementation of a flexible and interactive microprogram simulator","authors":"M. Mezzalama, P. Prinetto","doi":"10.1145/1014188.803010","DOIUrl":"https://doi.org/10.1145/1014188.803010","url":null,"abstract":"In the present paper a microprogrammable architecture oriented simulator is described. This simulator structure may be logically subdivided in four independent blocks: Supervisor, Interface Module, Simulation Monitor, Simulation Routines.\u0000 A high degree of flexibility is obtained by means of a highly hierarchical structure of software and an easy-to-modify table-driven system description. Moreover particular care has been devoted to user-simulator communication via an easy-to-use command language. The use of the simulator in the development of a microprogrammable machine (based on Am2900 bit-slice microprocessors) is described.","PeriodicalId":334800,"journal":{"name":"MICRO 12","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129693355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Towards an efficient, machine-independent language for microprogramming 一种高效的，独立于机器的微程序设计语言
MICRO 12 Pub Date : 1979-11-18 DOI: 10.1145/1014188.803008
D. Patterson, Karl M. Lew, Richard Tuck
{"title":"Towards an efficient, machine-independent language for microprogramming","authors":"D. Patterson, Karl M. Lew, Richard Tuck","doi":"10.1145/1014188.803008","DOIUrl":"https://doi.org/10.1145/1014188.803008","url":null,"abstract":"A machine independent low level language YALLL is presented. This language produces microcode for two very different machines: Hewlett Packard HP 300 and Digital Equipment Corporation VAX 11/780. The efficiency of this language is tested by comparing two examples on both machines to microassembly coded versions. To our best knowledge, this is the first time programs have been compiled and executed on two different microarchitectures. These examples also let us compare the efficiency of the microarchitectures and macroarchitectures of these machines and re-examine the benefits of microprogramming versus macroprogramming. We conclude this paper with comments upon transportability of high level microprogramming languages.","PeriodicalId":334800,"journal":{"name":"MICRO 12","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122865147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 22
Global optimization of microprograms through modular control constructs 通过模块化控制结构实现微程序的全局优化
MICRO 12 Pub Date : 1979-11-18 DOI: 10.1145/1014188.803006
G. Wood
{"title":"Global optimization of microprograms through modular control constructs","authors":"G. Wood","doi":"10.1145/1014188.803006","DOIUrl":"https://doi.org/10.1145/1014188.803006","url":null,"abstract":"By taking due regard of the disciplines of structured programming, we extend the scope of optimization of microprograms from blocks of micro-operations delimited by labels and branches (straight line segments) to complete microprograms.","PeriodicalId":334800,"journal":{"name":"MICRO 12","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117172986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 19
I/O device Emulation in The Stanford Emulation Laboratory 斯坦福仿真实验室的I/O设备仿真
MICRO 12 Pub Date : 1979-11-18 DOI: 10.1145/1014188.803018
Jerry Huck, C. Neuhauser
{"title":"I/O device Emulation in The Stanford Emulation Laboratory","authors":"Jerry Huck, C. Neuhauser","doi":"10.1145/1014188.803018","DOIUrl":"https://doi.org/10.1145/1014188.803018","url":null,"abstract":"This report describes the implementation of an I/O device emulation system for a universal host machine, the Emmy. The actual system I/O devices are part of a PDP-11/05 system supporting the UNIX operating system. To support device emulation a process is established within this system to act as a simple I/O channel responding to host I/O requests. This channel process is able to provide three basic device structures: serial, linear and variable, which correspond roughly to character, disk-like and tape-like devices respectively. These structures have been found to be adequate for a wide range of system emulations. Examples of such systems and their performance are given.","PeriodicalId":334800,"journal":{"name":"MICRO 12","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127131331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hierarchical microprogram generating system 分层微程序生成系统
MICRO 12 Pub Date : 1979-11-18 DOI: 10.1145/1014188.803007
E. Tamura, M. Tokoro
{"title":"Hierarchical microprogram generating system","authors":"E. Tamura, M. Tokoro","doi":"10.1145/1014188.803007","DOIUrl":"https://doi.org/10.1145/1014188.803007","url":null,"abstract":"A general purpose microprogram generating system has been developed to compose, together with a hardware/microprogram debugger, a general purpose development support system for LSI Processor Modules such as Am2900, MMI6700, and/or MACROLOGIC. The microprogram generator, designed to be applicable to a wide variety of microinstruction sets from vertical to horizontal including sophisticated control schemes like pipelining, has a three-level hierarchical structure. The lowest level generator is a microassembler, which has already been applied to many computers and shown its easiness of defining instructon sets and high-speed generation of object microcodes. The second level generator is an optimizing assembler, which translates a sequence of microoperations to an optimum sequence of microinstructions considering data dependency and concurrent executability of microoperations on a defined object machine. The highest level generator is the high-level microprogramming language compiler which generates an optimum sequence of microoperations utilizing techniques of optimization for high-level language compilers. Example definitions of a microinstruction set and an object machine, source programs, and object listings show the effectiveness of the hierarchical microprogram generating system.","PeriodicalId":334800,"journal":{"name":"MICRO 12","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125191716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Experience with a high level micromachine simulator 有高级微机械模拟器的经验
MICRO 12 Pub Date : 1979-11-18 DOI: 10.1145/1014188.803011
Stephen Schleimer, W. Meyers
{"title":"Experience with a high level micromachine simulator","authors":"Stephen Schleimer, W. Meyers","doi":"10.1145/1014188.803011","DOIUrl":"https://doi.org/10.1145/1014188.803011","url":null,"abstract":"As part of a microcoding project, we developed a simulator that offers a relatively high level view of a micromachine. The simulator supports all out a few features of the hardware, and provides a more friendly environment for the microprogrammer. In addition, the simulator supports a number of microprogramming conventions at a level inaccessible to the hardware. The simulator was implemented in a high level language, which contributed to its timely delivery and flexibility and did not detract from its efficiency. The simulator has been used to validate all of our microcode, with considerable success. Over 98% of microcode bugs have been found during simulation. The credibility of our microcode by the time it reaches hardware has also improved the detection and correction of hardware bugs.","PeriodicalId":334800,"journal":{"name":"MICRO 12","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130941152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Direct execution of C-string compiler texts 直接执行c字符串编译器文本
MICRO 12 Pub Date : 1979-11-18 DOI: 10.1145/1014188.803016
C. Bridges, A. Abd-alla
{"title":"Direct execution of C-string compiler texts","authors":"C. Bridges, A. Abd-alla","doi":"10.1145/1014188.803016","DOIUrl":"https://doi.org/10.1145/1014188.803016","url":null,"abstract":"High level language (HLL) computer architectures refer to those computers which are designed to accept either HLL source texts directly or intermediate texts preprocessed and prepared by HLL compilers. This paper investigates the direct execution of three C-string formats: duos, triples, and quadruples. Software simulators are developed which directly execute these C-string formats on an IBM 3033 architecture. The simulators are then executed for each of the C-string formats, testing the efficiency of each directly executed language (DEL) format for various workloads, on different mainframe architectures, and for five different HLL's. The results demonstrate that triples are the most efficient DEL format in support of most HLL texts on large-scale mainframes.","PeriodicalId":334800,"journal":{"name":"MICRO 12","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114094086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Interactive microprogram validation: A Prime 400 testbed facility 交互式微程序验证:Prime 400测试平台设施
MICRO 12 Pub Date : 1979-11-18 DOI: 10.1145/1014188.803013
Phillip Crews, L. Leventhal
{"title":"Interactive microprogram validation: A Prime 400 testbed facility","authors":"Phillip Crews, L. Leventhal","doi":"10.1145/1014188.803013","DOIUrl":"https://doi.org/10.1145/1014188.803013","url":null,"abstract":"This paper presents a solution to the problem of an inadequate microprogram testbed facility for the Prime 400 system, but more importantly, defines typical problems resulting from lack of good microprogram developement software in the university environment, and provides a model for their solution.","PeriodicalId":334800,"journal":{"name":"MICRO 12","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127115962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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