Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site umcp-cs.UUCP Path: utzoo!linus!philabs!cmcl2!seismo!umcp-cs!chris From: chris@umcp-cs.UUCP (Chris Torek) Newsgroups: net.unix-wizards Subject: Re: Can't get uba1 to work w/750 under 4.2 Message-ID: <8137@umcp-cs.UUCP> Date: Tue, 21-Aug-84 22:26:28 EDT Article-I.D.: umcp-cs.8137 Posted: Tue Aug 21 22:26:28 1984 Date-Received: Thu, 23-Aug-84 03:54:44 EDT References: <12640@sri-arpa.UUCP> Organization: U of Maryland, Computer Science Dept., College Park, MD Lines: 14 Does the 4.2 distribution have a preallocated UBA1 interrupt vector area? If not, that's the problem. If you look at ubavar.c (and I think locore.s) you'll find a ``UNIvec'' table. This is used for UBA 0 interrupt vectors. Unfortunately for Comet users, the scheme used to allocate interrupt vectors for UBAs 1 on up doesn't work on 750s. So autoconf and locore.s and so forth need to use one allocated in ``low core'' like UNIvec. (I don't have any more specific information; this is what I remember from a fix posted long ago for 4.1.) -- In-Real-Life: Chris Torek, Univ of MD Comp Sci (301) 454-7690 UUCP: {seismo,allegra,brl-bmd}!umcp-cs!chris CSNet: chris@umcp-cs ARPA: chris@maryland