On Tue, 29 Jan 2002 [EMAIL PROTECTED] wrote:
As far as I remember from reading the Lyons' book, there were
16 mapping descriptors for text and data each. I think, 1/16
of the address space is not too big, and in absolute values
it's the size of today's pages (4KB).
well I had dropped this
Once again Unix actually used this, the DEC OSes did not, so Unix was the
first to
find the bugs in this hardware too.
I think the first sentence is not true. The RT-11 XM monitor uses the MMU
hardware
intensively even before Unix came to utilize it. I'm not talking about
RSX-11, RSTS-E and
Ronald G Minnich wrote:
where'd they get this? that's an odd statement. Shared memory was used all
the time on Unix on -11s, that's the whole point of the shared text a.out
format. Of course shared read-only text is not exactly the standard shared
memory, but at the same time it shows
Justin C.Walker wrote:
On Monday, January 28, 2002, at 05:10 PM, Greg Shenaut wrote:
I'd guess that the point deals with the use of shared memory between
processes for the purposes of sharing data. Given the granularity of
the PDP-11 VM hardware, it seemed like a bad tradeoff, and
On Sat, 26 Jan 2002, Andrew Boothman wrote:
...
appendices is all about FreeBSD and its internals. It's 48 pages long
and is available from
http://www.wiley.com/college/silberschatz6e/0471417432/pdf/bsd.pdf
I like it. The dinosaur book has been a clasic forever. The
appendix
:52 PM
To: [EMAIL PROTECTED]
Subject: OS Textbook FreeBSD Appendix
Hi all!
Apologies if this is common knowledge, but I recently bought Operating
System Concepts by Silberschatz, Galvin and Gagne (published by Wiley)
for my Computer Science course and the book has several appendices which
On Mon, 28 Jan 2002, DOROVSKOY,IGOR (A-Portsmouth,ex1) wrote:
I've took a brief look on Unix presentation and was wondering, why author
says that ...most Unix systems have not permitted shared memory because
the PDP-11 hardware did not encourage it...?
where'd they get this? that's an odd
On Monday, January 28, 2002, at 02:49 PM, Ronald G Minnich wrote:
On Mon, 28 Jan 2002, DOROVSKOY,IGOR (A-Portsmouth,ex1) wrote:
I've took a brief look on Unix presentation and was wondering, why
author
says that ...most Unix systems have not permitted shared memory
because
the PDP-11
In message [EMAIL PROTECTED], Justin C.Walker cleopede:
I've took a brief look on Unix presentation and was wondering, why
author says that ...most Unix systems have not permitted shared
memory because the PDP-11 hardware did not encourage it...?
where'd they get this? that's an odd
On Monday, January 28, 2002, at 05:10 PM, Greg Shenaut wrote:
In message [EMAIL PROTECTED], Justin
C.Walker cleopede:
I've took a brief look on Unix presentation and was wondering, why
author says that ...most Unix systems have not permitted shared
memory because the PDP-11 hardware did
Hi all!
Apologies if this is common knowledge, but I recently bought Operating
System Concepts by Silberschatz, Galvin and Gagne (published by Wiley)
for my Computer Science course and the book has several appendices which
are available for download from Wiley's web site. One of these
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