Computer Hardware Description Languages Research Articles

Using logic programming and coroutining for electronic CAD

We show how an extended Prolog can be exploited to implement different electronic CAD tools. Starting with a computer hardware description language (CHDL) several problems like digital circuit analysis, simulation, test generation, and code generation for programmable microprocessors are discussed. For that purpose the MIMOLA (machine independent microprogramming language) system MSS (MIMOLA hardware design system) is presented. It is shown that logic programming techniques have several advantages especially in the area of integrated circuit design. One of the main advantages is the small code size, which translates to easy maintenance. We make extensive use of two main features of standard Prolog and constraint logic programming, i.e., backtracking and the coroutining mechanism, to express Boolean constraints.

Computer hardware description languages and their applications 19–21 June 1989, Washington, DC, USA

Computer hardware description languages and their applications 19–21 June 1989, Washington, DC, USA

Conference report. 7th international symposium on computer hardware description languages

Conference report. 7th international symposium on computer hardware description languages

Algorithmic specification of MOSFET's for multi-level computer design languages

Efficient support of VLSI design requires designing aids for description and simulation at all design levels but usually support is only given for a subset of them. It is shown that it is possible to extend computer hardware description languages with module and delay concepts for design description at circuit level using an algorithmic language level and introducing behavioral models for circuit components within existing discrete simulation systems.

Guest Editors' Introduction: Computer Hardware Description Languages: The Bridge Between Software and Hardware

Guest Editors' Introduction: Computer Hardware Description Languages: The Bridge Between Software and Hardware

Simulation attributes of computer hardware description languages

Several computer hardware description languages (CHDLs) have evolved over the past few years. Some of these languages are simulation oriented. A set of guidelines to compare CHDLs for their simulation attributes is provided in this paper. Eleven CHDLs are compared which range from the earliest description orientated languages to more recent multi-level simulation, fault modelling orientated languages.

Test Generation Algorithms for Computer Hardware Description Languages

This paper proposes an extension of the D-algorithm to functions described in computer hardware description languages. The proposed extension is applicable to both procedural and nonprocedural languages. Methods of D-propagation through the basic constructs of these languages and test generation for circuits containing functions described in CHDL's are discussed. The fault modes considered are function variables stuck at 0 or 1, control faults, and function faults with user-specified faulty behaviors.

International Conference on computer hardware description languages and their applications

International Conference on computer hardware description languages and their applications

An Interactive Computer Graphics Language for the Design and Simulation of Digital Systems

Many computer hardware description languages have been introduced to describe and model digital networks at the register transfer level.1-3Most CHDL's, however, like common programming languages, are text oriented and employ textual statements in the specification of a digital system. The process of converting a word statement problem into a description written in a design language is often tedious, especially when the design is complex. Many designers overcome this difficulty by drawing register layouts and control sequence or state diagrams for a design before hand-translating them into a specification in an appropriate design language. With the reduction in the costs of on-line computing and graphic terminals, this approach can be used early in the computer-aided-design cycle. This has in fact been accomplished at the University of Missouri-Rolla, where a graphic language called FLOWWARE has been developed to allow digital networks to be specified pictorially.

Logal: a CHDL for Logic Design and Synthesis of Computers

A computer hardware description language can be a practical and economical tool for driving a comprehensive automated design facility for a large-scale computer environment. The logic designer must optimize many conflicting requirements, including the following:

Hardware Description Language Applications: An Introdiction and Prognosis

Just as Software designers use high-level languages like Algol, Fortran, PL/I, and Snobol to express algorithms in terms of language statements, so digital hardware designers use hardware description languages to describe the digital systems they want to design. But whereas compilers for many high-level programming languages have been developed and implemented, the process of transforming a high-level computer hardware description language specification of a system into a logic diagram is still in its infancy.

An introduction to CHDL (computer hardware description languages)

No abstract available.

1975 International Symposium on Computer Hardware Description Languages and their Applications

1975 International Symposium on Computer Hardware Description Languages and their Applications

A survey of computer hardware description languages in the USA: Comput. Vol 7 No 12 (December 1974) pp 45–57

A survey of computer hardware description languages in the USA: Comput. Vol 7 No 12 (December 1974) pp 45–57

Review of "A survey of computer hardware description languages in U.S.A. by Stephen Y. H. Su", to be published in COMPUTER, December 1974.

One important goal in digital engineering is to find a language which is <u>descriptive</u>, efficient for <u>simulation</u> and <u>automatic hardware implementation</u> purposes.In this paper, the different levels of CHDL (computer hardware description languages) are introduced. Existing CHDL are surveyed and the features of these languages are pointed out. A table lists the names of CHDL, the authors, and the references. It also points out what language each CHDL is adapted from and reports the status of the implementation of these languages. Suggestions for overcoming the difficulties of using CHDL for computer-aided system/logic design are given.

A survey of computer hardware description languages in the U.S.A.

A digital system can be described at several levels. 1) The highest level is the algorithmic level which specifies only the algorithm to be used for solving a design problem. 2) The second level is the PMS (Processor, Memory, Switch) level which describes a system by processors, memory components, peripheral units, and switching networks. 3) The instruction level describes the instructions of a computer. 4) The register transfer or microinstruction level describes operations among registers. 5) The logic level expresses network in terms of gates and flip-flops. 6) The lowest level is the circuit level which implements gates and flip-flops by circuit elements such as transistors, resistors, etc.