On 26 Feb, Steven M. Schultz wrote:
2.11 BSD UNIX
#115: Sat Apr 22 19:07:25 PDT 2000
sms1@curly.2bsd.com:/usr/src/sys/GENERIC
That looks good - and familiar ;)
;-)
The next thing that should have come out is the
'# ' single user
prompt.
... like setup.ps says.
else happens.
The "Run" LED at the front panel is off. I tried with an
That sounds like the system 'halt'ed for some (unknown) reason.
Sigh - that kernel should work fine, especially with a RQDX3/RD54.
Yes. All the
devices where used in a MVII bevore and are knowen to
work. Thats a bit confusing.
System
configuration:
11/73 (M8192), one with FP accel. or one without. (Jumpers W1..W6 in,
W7..W9 out, so that the CPU enters ODT at power up.)
There is a jumper (I forget which one) that enables/disables the
'halt' instruction.
BINGO! Pulling W5 solved the problem. But then I
seted it again to
double check. (I changed location today and took only the cards and
disk with me.) In the "new" BA23 the system runs even with the W5
jumper installed. Then I noticed the different setting of the front
panel DIP swich. The upper switch is off and the lower on. The switches
of the other cabinet are both on. If I boot the machine with W5
installed and the upper switch on it hangs. It continues to run
immediately if it is switched off. What is the purpose of this
switches?
OK. The machine is currently un-tar-ing /usr... :-)))
Ahh, and an other question: Can the RT11 bootstrap listed in
http://www.ibiblio.org/pub/academic/computer-science/history/pdp-11/bootstr…
be used to boot 2.11BSD? I have no bootstrap ROM card. (Emanuel, hint,
hint. ;-) ) So I use a minicom script to load the bootstrap via ODT.
But the current bootstrap script is for TMSCP. So I have to load the
bootblocks from tape...
--
tschüß,
Jochen
Homepage:
http://www.unixag-kl.fh-kl.de/~jkunz/
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From John Holden <johnh(a)psych.usyd.edu.au> Tue
Feb 27 07:44:23 2001
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From: John Holden <johnh(a)psych.usyd.edu.au>
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To: PUPS(a)minnie.cs.adfa.edu.au
Subject: Re: [pups] Swap device in V6?
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The root device, swap device, swap size and offset are hard coded into the
kernel configuration file c.c. This is build by 'myconf', although a lot
of people would directly edit l.s and c.c (in /usr/sys/conf). There are no
magic /dev/swap entries. Edition 7 does the same thing.
For a RK05 disk, the filesystem would typically occupy 4000 blocks, with the
last 872 being allocated for swap. If you built a new root disk, you had to
be careful that the disk size you gave to 'mkfs', didn't overlap the
hard configured swap disk. No disk partitions.
You can find out the current values by using one of the debuggers (db or cdb)
to find the values of swap (_swapdev), swap size (_nswap), swap offset (_swplo)
and root device (_rootdev). You can also use 'nm' to get the symbol table,
and 'od' the kernel file /unix. The RK05 was usually the first entry in
the device switch tables, so the major/minor numbers are usually 0.
The 'ps' command looks up the symbol table of the unix kernel, and gets
the device entry for swap (_swapdev), and the process table (_proc)
It would open /dev as file, and read the directory entries to find a matching
device entry, so it then had the name of a device to open (you cannot open
a device based only in the major and minor device entries from a user process).
It also uses /dev to decode tty entries into names.
For 'ps' to work correctly, /unix had to be linked to the real kernel, say
rkunix.
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From Warren Toomey <wkt(a)henry.cs.adfa.edu.au> Tue
Feb 27 08:32:38 2001
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Subject: Re: [pups] Announce: The Unix Tree
In-Reply-To: <200102261747.SAA16216(a)unixag-kl.fh-kl.de> from
"jkunz(a)unixag-kl.fh-kl.de"
at "Feb 26, 2001 06:47:11 pm"
To: jkunz(a)unixag-kl.fh-kl.de
Date: Tue, 27 Feb 2001 09:32:38 +1100 (EST)
CC: PDP-11 Unix Preservation Society <pups(a)minnie.cs.adfa.edu.au>
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In article by jkunz(a)unixag-kl.fh-kl.de:
On 26 Feb, Warren Toomey wrote:
Because of the license restrictions, you need
your normal UNIX Archive
username and password to browse.
Hmm. Can you set up Apache to provide SSL /
HTTPS? I don't like to send
passwords unencrypted around the world.
tsch__,
Jochen
They are not real passwords, in a sense. There is only a userpool of
1,000 usernames/passwords.
When you register for access into the Unix Archive, you get one out of
the pool. The only purpose here is to prove to SCO that you indeed
agreed to their on-line license before you were given access to the
archive.
I'd be quite happy to completely dispense with the passwords altogether
and run an anonymous service. If/when Caldera work out what they are doing
with this stuff, I'll push them to allow for anonymous access.
Cheers,
Warren
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From "Steven M. Schultz"
<sms(a)moe.2bsd.com> Tue Feb 27 08:26:24 2001
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From: "Steven M. Schultz" <sms(a)moe.2bsd.com>
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Subject: Re: [pups] 2.11BSD boot hangs.
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Hi -
From jkunz(a)unixag-kl.fh-kl.de Mon Feb 26 13:16:40
2001
There is a jumper (I forget which one) that
enables/disables the
'halt' instruction.
BINGO! Pulling W5 solved the problem. But then I
seted it again to
double check. (I changed location today and took only the cards and
disk with me.) In the "new" BA23 the system runs even with the W5
Years ago I was completely suprised that 'halt' in kernel mode did
not work and the system simply continued executing the next instruction.
jumper installed. Then I noticed the different setting
of the front
panel DIP swich. The upper switch is off and the lower on. The switches
of the other cabinet are both on. If I boot the machine with W5
installed and the upper switch on it hangs. It continues to run
immediately if it is switched off. What is the purpose of this
switches?
I suspect that one of the switches enables the line frequency clock.
With out a clock running things will work (at least minimally) as
long as there are some interrupts happening.
I vaguely remember that some systems (11/23?) had an externally
enabled clock and if that switch was not set correctly the OS could
be installed but the system would "hang" later on due to no context
switch scheduling.
OK. The machine is currently un-tar-ing /usr... :-)))
Fantastic!
Ahh, and an other question: Can the RT11 bootstrap
listed in
http://www.ibiblio.org/pub/academic/computer-science/history/pdp-11/bootstr…
be used to boot 2.11BSD? I have no bootstrap ROM card. (Emanuel, hint,
I think it will work. 2.11 is expecting the registers to contain
the following:
R0 = unit number
R1 = CSR of booting controller
as long as those are set it should not matter what bootcode is used.
Steven Schultz
sms(a)moe.2bsd.com
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From Dave Horsfall <dave(a)horsfall.org> Tue Feb 27
08:39:30 2001
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cc: Roger Ivie <IVIE(a)cc.usu.edu>, <PUPS(a)minnie.cs.adfa.edu.au>
Subject: Re: [pups] Swap device in V6?
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On Mon, 26 Feb 2001, Ken Wellsch wrote:
Yet I see I have /dev/rk0 mknod'ed 0/0 and it is
a block device but "ps"
still gripes about "no swap device."
As I dimly recall, you need to link "/dev/drum" to whichever is the swap
device.
--
Dave Horsfall CL VK2KFU dave(a)geac.com.au Ph: +61 2 9978-7493 Fx: * 9978-7490
Geac Computers P/L (ERP Division) 2/57 Christie St, St Leonards 2065, Australia
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From Dave Horsfall <dave(a)fgh.geac.com.au> Tue Feb
27 08:45:56 2001
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On Mon, 26 Feb 2001, Roger Ivie wrote:
It is indeed the case that V6 needs swap to fork.
Forking in V6 is done
essentially by swapping the task out to disk and (oops!) forgetting to
delete the in-core copy. At least, that's how it looked to me.
Yes, that's how it was done, leading to the dreaded "panic: swap". I
think the swapped image became the parent, and the in-core one the child,
hence the child was pretty well guaranteed to run before the parent (it
typically did an exec() afterwards).
--
Dave Horsfall CL VK2KFU dave(a)geac.com.au Ph: +61 2 9978-7493 Fx: * 9978-7490
Geac Computers P/L (ERP Division) 2/57 Christie St, St Leonards 2065, Australia
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From Ken Wellsch <kwellsch(a)tampabay.rr.com> Tue
Feb 27 08:51:11 2001
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Subject: Re: [pups] Swap device in V6?
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Dave Horsfall wrote:
On Mon, 26 Feb 2001, Ken Wellsch wrote:
Yet I see I have /dev/rk0 mknod'ed 0/0 and
it is a block device but "ps"
still gripes about "no swap device."
As I dimly recall, you need to link "/dev/drum" to whichever is the swap
device.
After some wise person earlier explained the whole process in detail,
once I'd seen the final step ,I realized my error - I was booting rkunix
and as it turned out, had not matched /unix with that kernel... I just
tried it now and 'ps' is a happy camper. B^)
-- Ken
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From Dave Horsfall <dave(a)fgh.geac.com.au> Tue Feb
27 08:40:09 2001
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On Mon, 26 Feb 2001, Ken Wellsch wrote:
Yet I see I have /dev/rk0 mknod'ed 0/0 and it is
a block device but "ps"
still gripes about "no swap device."
As I dimly recall, you need to link "/dev/drum" to whichever is the swap
device.
--
Dave Horsfall CL VK2KFU dave(a)geac.com.au Ph: +61 2 9978-7493 Fx: * 9978-7490
Geac Computers P/L (ERP Division) 2/57 Christie St, St Leonards 2065, Australia
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From John Holden <johnh(a)psych.usyd.edu.au> Tue
Feb 27 09:12:07 2001
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Subject: [pups] Forks under V6
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It is indeed the case that V6 needs swap to fork.
Forking in V6 is done
essentially by swapping the task out to disk and (oops!) forgetting to
delete the in-core copy. At least, that's how it looked to me.
No. Fork calls the internal version 'newproc'. It tries to allocate memory from
the core map for the new process, and only when it fails that it creates the new
process as a swap image. Effectively, it copies out the parent as a swap
image, but attaches it to the child process (the parent isn't really swapped).
In 'miniunix', the V6 strip down for pdp-11's without memory management
(pdp11/20, 05, 10 and 40's without the proper options), only a single process
would fit in core, so every context switch or fork required swapping.
I cannot speak for pre V6
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27 09:46:45 2001
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Subject: Re: [pups] 2.11BSD boot hangs.
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On Mon, 26 Feb 2001, Steven M. Schultz wrote:
jumper
installed. Then I noticed the different setting of the front
panel DIP swich. The upper switch is off and the lower on. The switches
of the other cabinet are both on. If I boot the machine with W5
installed and the upper switch on it hangs. It continues to run
immediately if it is switched off. What is the purpose of this
switches?
I suspect that one of the switches enables the line frequency clock.
With out a clock running things will work (at least minimally) as
long as there are some interrupts happening.
Could be. I also remember seeing somewhere that the two dip switches on
the front panel of BA23 boxes should be set differently for PDP-11s and
VAXen. Appearantly they expect the boot button to behave in different ways
on the bus as well... (and HALT I think)
Don't have that docuemnt anywhere close though...
I vaguely remember that some systems (11/23?) had an
externally
enabled clock and if that switch was not set correctly the OS could
be installed but the system would "hang" later on due to no context
switch scheduling.
That definitely happens for RSX atleast. You *must* have a clock interrupt
running, or you are cooked.
Ahh, and an
other question: Can the RT11 bootstrap listed in
http://www.ibiblio.org/pub/academic/computer-science/history/pdp-11/bootstr…
be used to boot 2.11BSD? I have no bootstrap ROM card. (Emanuel, hint,
I think it will work. 2.11 is expecting the registers to contain
the following:
R0 = unit number
R1 = CSR of booting controller
as long as those are set it should not matter what bootcode is used.
Then it's more forgiving than the RSX boot code. I have tried that
bootstrap and it won't boot RSX atleast, that much I know...
Speaking of which; does anyone have boot roms for TMSCP for the M9312?
Johnny
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt(a)update.uu.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
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