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From: gwyn@brl-vgr.ARPA (Doug Gwyn )
Newsgroups: net.unix
Subject: Re: need memory syscall
Message-ID: <1346@brl-vgr.ARPA>
Date: Fri, 4-May-84 06:30:10 EDT
Article-I.D.: brl-vgr.1346
Posted: Fri May  4 06:30:10 1984
Date-Received: Sat, 5-May-84 01:21:13 EDT
References: <29300011@uiucuxc.UUCP>
Organization: Ballistics Research Lab
Lines: 2

Try the PHYS(2) system call (7th Edition UNIX only).  It lets you
clobber anywhere in memory.