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- From: terry@thisbe.npd.Novell.COM (Terry Lambert)
- Subject: Re: 386bsd 0.1 - Advice on bootstrap debugging needed.
- Message-ID: <1992Jul23.213947.22807@gateway.novell.com>
- Keywords: 386bsd boot wdboot
- Sender: terry@thisbe (Terry Lambert)
- Nntp-Posting-Host: thisbe.eng.sandy.novell.com
- Organization: Novell NPD -- Sandy, UT
- References: <greg.711922033@hibp1.ecse.rpi.edu>
- Date: Thu, 23 Jul 1992 21:39:47 GMT
- Lines: 38
-
- In article <greg.711922033@hibp1.ecse.rpi.edu>, greg@ecse.rpi.edu (Greg) writes:
- |> I've already ask this once before, but since the response was nearly
- |> non-existsent, I'll try again.
- |>
- |> 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. I have tried to play with wdbootblk.c, but am getting
- |> nowhere. I tried to add code to write directly to the video memory so I can
- |> see where the bootstrap fails. Years ago I dabbled in 8088 assemlbly language,
- |> but I have forgotten most of what I knew. Of course, there have been substantial
- |> changes to the instruction set since the 8088. It would be very helpful if
- |> someone could pass along the following things:
-
- This problem has to do with the fact that the "ready" on the controller isn't
- being checked correctly. Chris Demetriou (cgd@agate.berkeley.edu) has patches
- available for download at agate.berkeley.edu. Check out article #1912 or simply
- download the patched boot image for dist.fs and fixit.fs, and the patches, if
- you are planning on building your own kernel from sources. The are in the
- 386bsd heirarchy unde 'unofficial'.
-
- Terry Lambert
- terry_lambert@gateway.novell.com
- terry@icarus.weber.edu
- ---
- Disclaimer: Any opinions in this posting are my own and not those of
- my present or previous employers.
-