Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: Notesfiles; site uokvax.UUCP Path: utzoo!linus!vaxine!wjh12!genrad!decvax!ucbvax!ucbcad!tektronix!uw-beaver!cornell!vax135!houxz!houxm!mhuxl!ihnp4!inuxc!pur-ee!uiucdcs!uokvax!jab From: jab@uokvax.UUCP Newsgroups: net.unix-wizards Subject: Re: UNIX V 11/70 vs VAX HELP ! - (nf) Message-ID: <6200029@uokvax.UUCP> Date: Sat, 16-Jun-84 04:09:00 EDT Article-I.D.: uokvax.6200029 Posted: Sat Jun 16 04:09:00 1984 Date-Received: Thu, 21-Jun-84 01:42:17 EDT References: <544@ihuxa.UUCP> Lines: 35 Nf-ID: #R:ihuxa:-54400:uokvax:6200029:000:1239 Nf-From: uokvax!jab Jun 16 03:09:00 1984 #R:ihuxa:-54400:uokvax:6200029:000:1239 uokvax!jab Jun 16 03:09:00 1984 /***** uokvax:net.unix-wizar / ihuxa!gpw / 7:51 pm Jun 7, 1984 */ I am in need of information on the differences between System V UNIX* on an 11/70 versus an 11/780 (VAX). Specifically the following: Is an 11/70 capable of performing the full implementation of System V UNIX ? G. P. Wilkin (AT&T NETWORK SYSTEMS) ihnp4!ihuxa!gpw /* ---------- */ Doug Gwyn pointed to the newer "features" such as the "shell layers" facility. A lot of "add-on" packages, such as the Ethernet package from AT&T that runs on top of System V, ignore the PDP-11 entirely. It would be up to YOU to port such things over and make it work, and it's not clear that it's worth the effort. Also, the 1024 bytes/block filesystem isn't honored on the PDP-11 under System V, probably because they don't want to play games with the size of SABUFS that count against the precious kernel D space. The game of fitting a lot of things into a 64K address space gets old; even with text overlays, you can only put so many things into the kernel D space. (George Goble at Purdue and Peter Staubach here at OU have done a little work with data overlays, but it's not fun and not feasible (possible?) to do in a general way.) Jeff Bowles Lisle, IL