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From: ka@hou3c.UUCP (Kenneth Almquist)
Newsgroups: net.lang.c
Subject: Re: What Can't C Do?
Message-ID: <410@hou3c.UUCP>
Date: Tue, 13-Mar-84 16:09:27 EST
Article-I.D.: hou3c.410
Posted: Tue Mar 13 16:09:27 1984
Date-Received: Wed, 14-Mar-84 07:56:43 EST
References: <6900@unc.UUCP>
Organization: Bell Labs, Holmdel, NJ
Lines: 8

One way to reference device registers without using assembly language
is to use preprocessor defines like:

#define reg (*(int *)0177430)

Any C compiler that optimizes this sort of reference is likely to have
problems with other types of C code, such as signal handlers.
					Kenneth Almquist