Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!seismo!mimsy!chris From: chris@mimsy.UUCP (Chris Torek) Newsgroups: comp.unix.questions Subject: Re: Vax processors Message-ID: <7627@mimsy.UUCP> Date: Tue, 21-Jul-87 10:07:04 EDT Article-I.D.: mimsy.7627 Posted: Tue Jul 21 10:07:04 1987 Date-Received: Thu, 23-Jul-87 04:49:06 EDT References: <138@bernina.UUCP> <13413@topaz.rutgers.edu> <7622@mimsy.UUCP> Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742 Lines: 27 In article <7622@mimsy.UUCP> I wrote: >We have an 8250. (Actually, we have two, but one is still in shipping boxes, and needs to stay that way until we have something that runs one the machines.) >... I borrowed an Ultrix 2.0 field test tape.... The field test >kernel will not build, and the generic kernel's TCP or BVPNI >Ethernet driver does not work I should mention that field test 2.0 is not the same as Ultrix 2.0 (good thing too!); we just happened to have one such tape handy. >... After much of hacking on my part, 4.3BSD finally boots, then >promptly crashes (right after mapping the BUA I/O and register space >... very strange). Not so strange after all. This is what I get for being careless while installing Mike's new Unibus code. My UMEMmap was 16 entries too small, so the moment I clobbered the TLB, the machine read through Usrptmap to find the kernel stack, but Usrptmap now pointed off into Unibus space. Oops. Well, now I know what those things in the 8200 machine check frame are all about. -- In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7690) Domain: chris@mimsy.umd.edu Path: seismo!mimsy!chris