Linking 8 and 16 bit microcomputers using the ieee 488 interface bus

Author

Singh, D. ; Hyndman, D.E.

Author_Institution

University of Bristol, Department of Microelectronics, Bristol, UK

Volume

4

Issue

1

fYear

1985

fDate

2/1/1985 12:00:00 AM

Firstpage

21

Lastpage

25

Abstract

The IEEE 488 bus is fast becoming the data communications standard in instrumentation industries. A system developed at Cranfield Institute of Technology allows a DEC LSI-11, a Texas Instruments TMS 9900 based microcomputer and two KIM-1 hobbycomputers to be linked in a mini-network mode. This system is the subject of the paper. To detect possible data transmission errors a number of methods are considered and the checksum method is implemented. In the LSI-11 microcomputer data transactions for the two protocols, software polling and interrupt, are demonstrated. The hardware used to construct the interfaces is fully detailed and the logic of the software is described.

Keywords

DEC computers; Texas Instruments computers; computer interfaces; microcomputers; 16 bit microcomputers; 8 bit microcomputers; DEC LSI-11; IEEE 488 interface bus; KIM-1 hobby computers; Texas Instruments TMS 9900; checksum method; data communications standard; data transmission errors; instrumentation; interrupt; microcomputer; mini-network mode; protocols; software polling;

fLanguage

English

Journal_Title

Software & Microsystems

Publisher

iet

ISSN

0261-3182

Type

jour

DOI

10.1049/sm.1985.0004

Filename

4808062