*BSD News Article 2213


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From: sxjcb@skyfire.uacn.alaska.edu (Jay C. Beavers)
Newsgroups: comp.unix.bsd
Subject: Re: 386bsd 0.1 - Speed dependent boot problem
Message-ID: <sxjcb.31.711750643@skyfire.uacn.alaska.edu>
Date: 21 Jul 92 20:30:43 GMT
References: <greg.711746666@hibp2.ecse.rpi.edu>
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In article <greg.711746666@hibp2.ecse.rpi.edu> greg@ecse.rpi.edu (Greg) writes:
>Newsgroups: comp.unix.bsd
>Path: raven.alaska.edu!decwrl!mips!zaphod.mps.ohio-state.edu!rpi!greg
>From: greg@ecse.rpi.edu (Greg)
>Subject: 386bsd 0.1 - Speed dependent boot problem
>Message-ID: <greg.711746666@hibp2.ecse.rpi.edu>
>Nntp-Posting-Host: hibp2.ecse.rpi.edu
>Date: Tue, 21 Jul 1992 19:24:26 GMT
>Lines: 22


>I seem to have a problem booting that is timing dependant. My machine will
>boot off wd0 about 95 % the time when in low speed mode. In high speed (33MHz)
>it boots only about 20% of the time.

>My equipment:
>386-33 Advanced Integration Research motherboard (1 CHIPS & 2  ETEQ VLSIs)
>Quantum 105lp IDE
>Trident 8900 vga
>Novell Ne2000 ethernet


>I started to poke around in the boot stuff. I put a printf at the begining of
>boot.c. I rebuilt wdboot and bootwd and then re-disklabeled. I verified that
>boot.c was not reached when the boot failed. When it succeeded, I saw my
>debugging message. My 80x06 assembly is a bit rusty, so I hesitated to
>plunge into wdbootblk.c. Before I do this, I wonder if anyone can give me any
>possible stategies.

>      Thanks, Greg                 greg@megas.ecse.rpi.edu

Perhaps. but not necessarily clockspeed alone.  My 386/25 always boots 
correctly, while my 486/25 boots maybe one in eight times......

 - jcb
______________________________________________________________________________
                                      |
Jay C. Beavers                        |   sxjcb@orca.alaska.edu 
University of Alaska Computer Network |   sxjcb@alaska.bitnet
______________________________________|_______________________________________