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From: mark@ems.UUCP
Newsgroups: comp.os.minix
Subject: Re: Memory handling in MINIX ?
Message-ID: <131@ems.UUCP>
Date: Fri, 30-Jan-87 10:48:51 EST
Article-I.D.: ems.131
Posted: Fri Jan 30 10:48:51 1987
Date-Received: Sat, 31-Jan-87 09:12:39 EST
References: <5490004@nucsrl.UUCP> <254@hqda-ai.UUCP> <772@vaxb.calgary.UUCP>
Sender: news@ems.UUCP
Reply-To: mark@ems.UUCP (Mark H. Colburn)
Organization: EMS/McGraw-Hill, Eden Pairie, MN
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I doubt that there is any way to assure that a C program will not currupt the
memory and bring the macine down in Minix yet.  The 'gentlemens' agreement is
the only memory check that is ensured by the 8086 hardware.  It is possible
to bring MS-DOS down in a big hurry with a 'misbehaved' C program, and it looks
like Minix is a little more delicate, albeit a lot more powerful, than MS-DOS.

I doubt the segment checking will get put into place until a port is done to
a chip that supports it, such as the 80286, 80386, 68000.  Supposedly the
68000 port is underway, but I do not know if they will support segmentation
checks or not.