摘要:

AbstractThe Yale Tools environment provides integrated modern computing facilities to a mixed group of programmers and users on time‐shared machines. Hundreds of people use the environment every day for systems and applications programming, word‐processing and university business. The success of the environment is in its integration and engineering detail. Building such a system without a high‐level language and a run‐time library would have been imp

ISSN:0038-0644    

DOI:10.1002/spe.4380131002

出版商:John Wiley&Sons, Ltd.    

年代:1983

数据来源: WILEY

摘要:

AbstractObservations on the design of the special‐purpose scientific programming language SL/1 are presented. SL/1 is intended for applications programming of the Control Data Corporation Cyber 203, a very high‐performance vector processor, which is mainly used for scientific computation. The language design has been heavily influenced by the hardware characteristics of this machine and the needs of the Cyber 203 user community. Various aspects of the design of SL/1 are discussed and measurements of their use are presented. In addition, unexpected similarities between the resulting design of SL/1 and the design of FORTRAN are examined and several reasons for the continued widespread use of FORTRAN are sugges

ISSN:0038-0644    

DOI:10.1002/spe.4380131003

出版商:John Wiley&Sons, Ltd.    

年代:1983

数据来源: WILEY

摘要:

AbstractDebugging low level language software can be a difficult business—the bare microprocessor lacks the user interface; facilities, such as simulators, provided on another machine can be tedious to use on running or partially working programs. A resolution of this difficulty lies in the harmonious use of a mainframe‐based debugging system and a real microprocessor.This paper describes tools and techniques for the development of low level software for the Intel 8080 microprocessor employing both simulated and real microprocessors. The debugging system allows the user to set up a virtual microprocessor into which programs can be loaded and run and from which a flexible tracing of the executing program can be obtained. The debugging system is built into a general purpose multi‐access operating system and this approach makes it possible to provide the system cheaply to a large number of users. Additionally, users have access to all the general facilities (such as editors) provided by the operating system itself.The system has been implemented on a minicomputer with 60 VDU terminals all of which can be used for interaction with the 8080 simulator or for general interactions with the mainframe operating system. The system has also been implemented in a self‐simulating version to run on a real Intel 8080 microprocessor. Many of the VDUs on the minicomputer are controlled by Intel 8080 microprocessors and it is possible to load and run large Intel 8080 programs which were assembled (and tested) on the mainframe or run the self simulator based debugging system. In this way a range of complementary debugging environments is provided: the simulator on the mainframe with its access to backing store (and, hence, the ability to save trace information), the self simulator on the microprocessor (with its better performance for the single user), and the actual Intel 8080 itself. The user can easily move a partially tested program between environments and thus use the environment which best suits his current phase of

ISSN:0038-0644    

DOI:10.1002/spe.4380131004

出版商:John Wiley&Sons, Ltd.    

年代:1983

数据来源: WILEY

摘要:

AbstractWhen a procedure is activated as a logical last statement in another procedure, optimization could be done to the procedure call and return. Several optimizations are discussed. The first optimization is based on the idea of reusing the current stack frame. With this approach, it is necessary to compute the order of passing parameters. A tactic of computing the dependency of parameters and a heuristic method of breaking the cyclic dependencies are therefore proposed. However, this approach has severe restrictions imposed on the kinds of procedure that can be called; in particular, the called procedure cannot contain references to the calling procedure. To remove all such restrictions, the second and third methods of optimization are put forwards. The second optimization revolves around the concept of continuation closure. It uses the normal stack frame of standard implementation, but alters its continuation closure to achieve quick procedure exit. The third optimization builds upon the concept of para‐stack frame and common continuation closure for achieving fast procedure exit. Various other refinements are also considere

ISSN:0038-0644    

DOI:10.1002/spe.4380131005

出版商:John Wiley&Sons, Ltd.    

年代:1983

数据来源: WILEY

摘要:

AbstractThe Little META Translator Writing System is a tool for implementing experimental compilers, interpreters, preprocessors and higher level translator writing systems on a microprocessor. This paper presents the salient features of the system through the implementation of three translators. Some knowledge of LISP is assumed.

ISSN:0038-0644    

DOI:10.1002/spe.4380131006

出版商:John Wiley&Sons, Ltd.    

年代:1983

数据来源: WILEY

摘要:

AbstractMatrix multiplication is used as an example to illustrate a method of transforming the specification of a problem into an algorithm suitable for execution on synchronous machines. The transformations are influenced both by the architectures of the target machines and their available high level languages. Three different synchronous machines, a conceptual MCC (mesh connected computer), the Cray‐1 and the ICL DAP are considered as target hardwar

ISSN:0038-0644    

DOI:10.1002/spe.4380131007

出版商:John Wiley&Sons, Ltd.    

年代:1983

数据来源: WILEY

ISSN:0038-0644    

DOI:10.1002/spe.4380131008

出版商:John Wiley&Sons, Ltd.    

年代:1983

数据来源: WILEY

ISSN:0038-0644    

DOI:10.1002/spe.4380131009

出版商:John Wiley&Sons, Ltd.    

年代:1983

数据来源: WILEY

ISSN:0038-0644    

DOI:10.1002/spe.4380131010

出版商:John Wiley&Sons, Ltd.    

年代:1983

数据来源: WILEY

ISSN:0038-0644    

DOI:10.1002/spe.4380131011

出版商:John Wiley&Sons, Ltd.    

年代:1983

数据来源: WILEY