Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site harvard.ARPA Path: utzoo!linus!vaxine!wjh12!harvard!brownell From: brownell@harvard.ARPA (Dave Brownell) Newsgroups: net.unix-wizards Subject: Re: UNIX V 11/70 vs VAX differences Message-ID: <287@harvard.ARPA> Date: Thu, 21-Jun-84 22:21:43 EDT Article-I.D.: harvard.287 Posted: Thu Jun 21 22:21:43 1984 Date-Received: Sat, 23-Jun-84 06:34:03 EDT References: <544@ihuxa.UUCP>, <6200029@uokvax.UUCP> Organization: Sequoia Systems Inc., Marlborough Mass. Lines: 12 Apologies if this has been posted before. System V on Vexen and PDP11s also have different implementations of shared memory. The Vax version has real segments that you can put anywhere, with IPC protection mechanisms; the PDP11 version is has a different interface, substituting filesystem protections for the IPC ones. Also, segment sizes on the PDP11 are fixed at 4k, while they're variable in full System V implementations. Dave Brownell {allegra,floyd,ihnp4,seismo}!harvard!brownell