1 Feb
1998
1 Feb
'98
4:20 a.m.
<> they can only because the '450 has a silo of 4 bytes
<
<The 16540 has only one byte buffer.
Oops mixed it op with a compatable hybrid...
<
<> and the 550 it's either 16 or 32 bytes.
<
<The 16550 has 4 bytes, and the 16650 has (I think) 16 bytes.
Some fo the super integration chips (FDC, IDE, 2SIO and parallel) have
extended that to 32.
<Have you modified the kernel? Normally disks will preempt ttys.
This is RT-11 and RSTS and I don't have a UNIX on the q-buss -11s.
I could recompile RT but, Qbus, interrupt priority is based on position
relative to the cpu, In mine its memory, serial io and then all the rest
in order of decreasing speed.
Allison
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From Warren Toomey <wkt(a)henry.cs.adfa.oz.au> Sun
Feb 1 17:47:25 1998
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From: Warren Toomey <wkt(a)henry.cs.adfa.oz.au>
Message-Id: <199802010747.SAA12606(a)henry.cs.adfa.oz.au>
Subject: Virtual PDP Tape - update
To: pups(a)minnie.cs.adfa.oz.au (PDP Unix Preservation)
Date: Sun, 1 Feb 1998 18:47:25 +1100 (EST)
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All,
The virtual tape drive seems to be working fine. I've added RL
support, so you should be now able to install over a serial line to:
RP04, RP05 and RP06 disks.
RP03 disks.
RK05 disks.
RL01 and RL02 disks.
Other disk support would require hacking the V7 kernel sources.
I've back-ported uncompress to V7, and written a user-mode program to
read from the tape, so I'm hoping that once the basic root filesystem is
installed, you will be able to do:
$ vtget /dev/tty1 5 | uncompress | tar vxf -
and pull over compressed tar images. That should speed things up.
I will consolidate the documentation, give it a damn good testing with
Ersatz 2.0 tomorrow, and then put the whole thing up for ftp at:
ftp://minnie.cs.adfa.oz.au/PDP-11/Vtserver
I haven't heard from many of those who were `dying' for something like this
last year. Hopefully someone will find it useful :-)
Cheers,
Warren
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From Warren Toomey <wkt(a)henry.cs.adfa.oz.au> Mon
Feb 2 13:44:29 1998
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From: Warren Toomey <wkt(a)henry.cs.adfa.oz.au>
Message-Id: <199802020344.OAA23220(a)henry.cs.adfa.oz.au>
Subject: First Release of Virt Tape Software
To: pups(a)minnie.cs.adfa.oz.au (PDP Unix Preservation)
Date: Mon, 2 Feb 1998 14:44:29 +1100 (EST)
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All,
Ok, the alpha-cut of the virtual tape drive for installing 7th
Edition UNIX onto PDP-11s is available at
ftp://minnie.cs.adfa.oz.au/pub/PDP-11/Vtserver
It works for RK05s, but I'm getting a `panic: iinit' error for RL02s.
This indicates a bad kernel build for the RL02s, something I have to work on.
I cannot test the software for RP03/04/05/06 disks, but this should be
vanilla V7 and should work with no problems.
A couple of people emailed me and said that they would rather get 2.11BSD
(again on a PDP-11 with no tape drive). Steven, would you be prepared to
add support for the virtual tape drive into 2.11BSD? Only the boot/install
code would need to change.
Would anyone with RL02s & experience with V7 kernels help me fix the
RL02 problems?!!
Cheers all,
Warren
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From Warren Toomey <wkt(a)henry.cs.adfa.oz.au> Tue
Feb 3 08:04:20 1998
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From: Warren Toomey <wkt(a)henry.cs.adfa.oz.au>
Message-Id: <199802022204.JAA24121(a)henry.cs.adfa.oz.au>
Subject: Swedish PUPS
To: pups(a)minnie.cs.adfa.oz.au (PDP Unix Preservation)
Date: Tue, 3 Feb 1998 09:04:20 +1100 (EST)
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Did I send this PDP message on to the list?
Warren
----- Forwarded message from beast(a)lintilla2.df.lth.se -----
From: beast(a)lintilla2.df.lth.se
Date: Tue, 27 Jan 1998 14:38:52 +0100
Message-Id: <199801271338.OAA07788(a)sylvester.>
To: wkt(a)cs.adfa.oz.au
Subject: PUPS Membership
Hi PDP lovers!
My name is Lars Persson and I live in the south of Sweden.
I am collecting various flavors of PDP11 systems. Mainly Q-bus based ones.
Currently I have one system up running UNIX, namely an 11/23 with IDRIS.
IDRIS is roughly V6-ish, btw.
I also have in my collection a PDP11/73 with BSD 2.11 but this system is
currently suffereing from a defective boot sector on its RD54 and my TK25
has burned to cinders.. Can anybody help?
Other more or less workable systems are: 11/34, 11/03, 11/23s-/23PLUS,
11/53, PRO-350, VT103 (the VT100 with a built in Qbus for LSI PDPs)
and also several VAXen (uVAX II, 11/730 and various VAX-stations).
In my collection I also have much litterature, manuals and engineering
drawings of PDP11s, spares, RL02 diskpacks, RK05 diskpacks, RX01/02
floppies and much more. Happy to help anybody who needs it.
I have been fiddling with PDP11 computers for a considerable number
of years and I have also worked with UNIX and networking for a long long
time. =)
Regards!
/Lars Persson, HARLOSA Computer Center
----- End of forwarded message from beast(a)lintilla2.df.lth.se -----
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