8 May
2002
8 May
'02
5:39 a.m.
Hi, all.
I've been trying to build a kernel with TCP/IP & DEQNA support for the
PDP-11/93. After reassigning some of the overlay inclusions, the kernel
builds OK, and will boot, up to looking for the root filesystem. The
boot fails with an error that there's no root fs at major, minor (5,0).
I've verified that my root filesystem is indeed at that device. I
can't figure out where I'm hosing the build.
Any suggestions? I'll probably be going to RT-11 as soon as Mentec
clears the hobbyist licensing, but I'd like to leave triumphant....
Plus, I promised a friend a login on A Real PDP-11.
Doc
8 May
8 May
6:42 a.m.
On Wednesday 08 May 2002 09:39, you wrote:
Hi, all.
I've been trying to build a kernel with TCP/IP & DEQNA support for the
PDP-11/93. After reassigning some of the overlay inclusions, the kernel
builds OK, and will boot, up to looking for the root filesystem. The
boot fails with an error that there's no root fs at ......
Did the filesystem driver or disk driver end up outside of the resident
part of the kernel ?
Is it possible for that condition to exist ? im asking because
the behavior you gave suggests it.
Raymond
9:40 a.m.
On Wed, 8 May 2002, Raymond Moyers wrote:
On Wednesday 08 May 2002 09:39, you wrote:
No, that was the first thing I looked for. Actually, a couple of the
overlays were too large, so I moved drivers _into_ the resident kernel.
Doc
Hi, all.
I've been trying to build a kernel with TCP/IP & DEQNA support for the
PDP-11/93. After reassigning some of the overlay inclusions, the kernel
builds OK, and will boot, up to looking for the root filesystem. The
boot fails with an error that there's no root fs at ......
Did the filesystem driver or disk driver end up outside of the resident
part of the kernel ? 
1:33 p.m.
Doc wrote:
On Wed, 8 May 2002, Raymond Moyers wrote:
> Did the filesystem driver or disk driver end up outside of the resident
> part of the kernel ?
In 2.11BSD the whole kernel is ALWAYS resident, no swapping here. It is
just not all mapped at any given time. The overlay system is pretty much
transparent to the kernel.
No, that was the first thing I looked for.
Actually, a couple of the
overlays were too large, so I moved drivers _into_ the resident kernel.
Good idea from a performance standpoint, but not for the kernel to function
and again all the overlays, BASE, OV1, OV2, etc. are always in memory, just
not always mapped into the processor instruction space by a page register.
Doc
Glad you got it working!
-chuck
11:46 a.m.
On Wed, 8 May 2002, Doc Shipley wrote:
Hi, all.
I've been trying to build a kernel with TCP/IP & DEQNA support for the
PDP-11/93. After reassigning some of the overlay inclusions, the kernel
builds OK, and will boot, up to looking for the root filesystem. The
boot fails with an error that there's no root fs at major, minor (5,0).
Well, now I wish I could figure out what I _was_ doing wrong.
It's been 2 [very busy] weeks since I'd booted the /93, so I'm not too
sure where I left off. There is a saved Makefile I can peruse if I
decide to do a postmortem.
Yet Another Google Attempt, looking for "type 431 too big" this time
(build-time error instead of boottime error) got me clued in to using
"size" to check the base & overlay segments. I genned another Makefile,
and all I needed to do was move a couple of objects from OV6 to OV5.
As they say, "Bahdda-Bing!" The kernel boots, the BNC/RJ45
transciever lights up, and qe0 moves packets on request.
I feel happy.
Now to find an irc client that'll build, so I can _really_ impress the
local LUGgers....
Thanks, all. As often happens, none of the suggestions was exactly
it, but they did put me on the right track.
Doc
9 May
9 May
12:58 p.m.
On 2002.05.08 22:46 Doc wrote:
Yet Another Google Attempt, looking for "type
431 too big" this time
(build-time error instead of boottime error) got me clued in to using
"size" to check the base & overlay segments.
Of course size must be
used[1] and observe the comments in the
Makefile...
If someone is interrested: I have some nice Makefile additions along
with a awk script that eases the arrangement of 2.11BSD kernel overlays
very much. You can do a "make sizes" and you get a list of the base
segment and overlay sizes. "make size1" ... lists the size of the
individual object files in a single overlay.
Now to find an irc client that'll build,
Good luck. I had some trouble to get pdksh build. It links now, but core
dumps on start up. Ahh. I need 48 houres a day to do all the nice
hacking I want to do. :-/
[1] I made the same error at my first attempt...
--
tsch??,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
8112
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5 comments
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participants (4)
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chd_1＠nktelco.net -
doc＠mdrconsult.com -
jkunz＠unixag-kl.fh-kl.de -
rmoyers＠nop.org