Pascal, modula-2 and multi-tasking kernel implementation
作者:
S.Ayandeh,
E.L.Morris,
期刊:
Software Engineering Journal
(IET Available online 1987)
卷期:
Volume 2,
issue 6
页码: 205-212
年代: 1987
DOI:10.1049/sej.1987.0027
出版商: IEE
数据来源: IET
摘要:
This paper presents a comparison of Pascal and Modula-2 based on the implementation of the basic components of a multi-tasking kernel. The major issues involved in high-level language implementation of a stand-alone multi-tasking kernel on a microprocessor system are the transportation of the language support system and what may be termed software engineering considerations. The merits of Pascal and Modula-2 with respect to these issues are compared. Standard Pascal is a sequential language, and the development of the multi-tasking features of the kernal has to take place outside the scope of the language. The Modula-2 language (nucleus), however, allows the kernal to be built entirely using high-level constructs. Issues of language run-time support and portability are also covered. These topics and the high-level handling of interrupts have received little attention in the literature on Modula-2. The Modula-2 kernel also provides a possible implementation of the ‘MODULE processes’.
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