NDLI: Software-fault detector for microprocessors

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Volume 7, Issue 3-4, December 1981

Volume 7, Issue 2, October 1981

Applying structured tools and techniques to the development of software for a small computer system

The growth of a project or, mushrooming megabytes

Minimal multitasking operating systems for real-time controllers

A programming environment for small business

Artemis—an operating system for OSI microcomputers

Designing real-time software systems

Research on rural communication and the microcomputer controlled modem and telephone

Adaptive power management a hierarchical/distributed system

Software-fault detector for microprocessors

The micro actuarial calculator - a case study

Comparative survey of database management systems on microcomputers

A high-level functional query language for a small relational system

Video graphic query facility database design

The automated desk

SPSL/SPSA a minicomputer database system for structured systems analysis and design

Implementing SMART for minicomputers via relational processing With abstract data types

MESSIDOR system

An architecture for a relational dataflow database

Data bases for microcomputers

Design and implementation of a portable database system for small computers

Volume 7, Issue 1, February 1981

Software-fault detector for microprocessors

Content Provider	ACM Digital Library
Author	Itano, Kozo Ida, Tetsuo
Abstract	For the realization of the means to develop more reliable software for the microcomputers especially in real time environments, we design a hardware tool called “software-fault detector” which detects software faults such as misaccess to an element beyond the range of an array. The implementation of the mechanism for such address range checks is generally difficult in microprocessor environment, since internal registers are not readily visible to external logics. We introduce an “incremental” key-lock protection scheme into the fixed microcomputer architecture of the INTEL 8080 because of its popularity and simplicity. In this scheme, a “lock” is a protection code associated with the storage cell, and a “key” is associated with access capability such as address. In each memory access to a cell, a check is made whether a key matched against the lock of the addressed cell. In this paper, we present the details of the scheme and its analysis. Further, we present an actual hardware design of the software fault detector. Our design methodology is to realize a dector by the use of identical microprocessor 8080s, as an independent one-board module which could be connected to the memory bus of the host system.
Starting Page	64
Ending Page	70
Page Count	7
File Format	PDF
ISSN	0272720X
DOI	10.1145/1067672.802417
Journal	ACM SIGSMALL Newsletter (SMALL)
Volume Number	7
Issue Number	2
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1984-02-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article

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