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From: bengsig@oracle.nl (Bjorn Engsig)
Newsgroups: comp.arch
Subject: Re: Is handling off-alignment important?
Message-ID: <949@nlsun1.oracle.nl>
Date: 7 Sep 90 10:32:45 GMT
References: <104037@convex.convex.com> <8840014@hpfcso.HP.COM> <140356@sun.Eng.Sun.COM> <26376@mimsy.umd.edu> <141881@sun.Eng.Sun.COM>
Reply-To: bengsig@oracle.nl (Bjorn Engsig)
Organization: Oracle Europe, The Netherlands
Lines: 11

Article <141881@sun.Eng.Sun.COM> by jputnam@raptor.Eng.Sun.COM (James M.) says:
|
|     Does anyone know of a machine that has this "feature" [ignoring low bits
| in unaligned stores and load]
Yes, the IBM RT does this.  As far as I remember there is a well hidden switch
to turn this to give an exception on unaligned addressing, but the default is
simply to ignore the last one (two) bits of the address on halfword (fullword)
stores and loads.
-- 
Bjorn Engsig,	Domain:		bengsig@oracle.nl, bengsig@oracle.com
		Path:		uunet!mcsun!orcenl!bengsig