From: bqt@update.uu.se (Johnny Billquist)
Subject: [TUHS] Re: Porting Unix v6 to i386
Date: Thu, 31 Jan 2002 19:51:41 +0100 (CET) [thread overview]
Message-ID: <Pine.LNX.4.21.0201311947170.29712-100000@Tempo.Update.UU.SE> (raw)
In-Reply-To: <20020131102649.B19170@apple.ukc.ac.uk>
On Thu, 31 Jan 2002, P.A.Osborne wrote:
> On Wed, Jan 30, 2002 at 08:50:31PM +0100, Johnny Billquist wrote:
> > On Wednesday 30 January 2002 10:18, P.A.Osborne wrote:
> > > Having had a rummage and a chat with acolleague here at
> > > UKC - it seems that V6 will be easier than V7, partially because
> > > of the Lions commentary - but mainly because 286 protected mode
> > > gives a very similar handling on memory management as the PDP did.
> >
> > What a silly argument.
> > V6 and V7 both run on the PDP-11, so the memory
> > management hardware used by them both are the same.
>
> Having looked through the source of v6 and v7 the comments are shall
> we say minimalistic to people who are not as familiar with the PDP
> architecture as say Ritchie and Thompson - ie ME! Hence the Lions
> commentary makes life a darn site easier.
>
> I am not disagreeing with the second point you have made. However the
> point is that V7 is a development on from V6 and the memory management
> is more complex and thus requires more work.
I thought I only made one point, and that was that the argument for V6
being easier to port because "286 protected mode gives a very similar
handling on memory management as the PDP did".
Since V6 and V7 both run on the PDP-11 it can absolutely not be an
argument for preferring V6 to V7.
Thus I think it is a silly argument.
The rest is purely speculative on my behalf, and I really don't want to
debate wether V6 or V7 would be better to port.
I have a proper PDP-11 at home, and in addition, I run RSX, not Unix on
it. :-)
Johnny
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt at update.uu.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
next prev parent reply other threads:[~2002-01-31 18:51 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <no.id>
2002-01-18 6:53 ` [pups] Re: GCC Aaron J. Grier
2002-01-18 7:07 ` Wilko Bulte
2002-01-18 9:06 ` Lars Brinkhoff
2002-01-18 12:44 ` Warren Toomey
2002-01-18 14:49 ` Bill Gunshannon
2002-01-18 15:31 ` Lars Brinkhoff
2002-01-18 19:00 ` Johnny Billquist
2002-01-18 21:54 ` Jonathan Engdahl
2002-01-19 8:48 ` Lars Brinkhoff
2002-01-19 21:19 ` Warren Toomey
2002-01-18 18:06 ` Aaron J. Grier
2002-01-30 1:57 ` [TUHS] Re: Porting Unix v6 to i386 Aaron J. Grier
2002-01-30 9:18 ` P.A.Osborne
2002-01-30 18:00 ` Sven Dehmlow
2002-01-30 19:50 ` Johnny Billquist
2002-01-30 21:40 ` Michael Davidson
2002-01-31 10:26 ` P.A.Osborne
2002-01-31 18:51 ` Johnny Billquist [this message]
2002-02-01 10:27 ` P.A.Osborne
2002-01-31 19:04 ` Mike Haertel
2002-01-30 19:52 ` Mike Haertel
2002-01-30 20:54 ` M. Warner Losh
2002-01-30 22:47 ` Greg Lehey
2002-03-03 12:51 ` Cyrille Lefevre
2002-03-03 20:14 ` Peter Jeremy
2002-03-03 20:46 ` Tim Shoppa
2002-03-03 21:07 ` Peter Jeremy
2002-01-31 9:18 ` Lauri Aarnio
2002-01-31 11:00 ` P.A.Osborne
2002-01-31 16:09 ` Sven Dehmlow
2002-01-31 18:45 ` Lauri Aarnio
2002-02-01 0:42 ` Greg Lehey
2002-02-04 22:12 ` Michael Davidson
2002-02-05 10:42 ` P.A.Osborne
2002-02-06 16:36 ` Jeffrey S. Sharp
2002-02-07 10:23 ` P.A.Osborne
2002-01-30 22:44 ` Greg Lehey
2002-02-14 22:30 ` Aaron J. Grier
2002-02-15 3:08 ` Peter Jeremy
2002-02-15 8:08 ` Lars Brinkhoff
2002-01-30 21:52 John Holden
2002-01-30 23:51 Grant Maizels
[not found] <20020131102843.C19170@apple.ukc.ac.uk>
[not found] ` <200201311847.g0VIlHj41858@ducky.net>
2002-02-01 10:24 ` P.A.Osborne
[not found] <E16WjYq-0005RL-00@mercury.ukc.ac.uk>
2002-02-04 9:33 ` P.A.Osborne
2002-02-04 10:57 ` Warren Toomey
2002-02-04 11:48 ` P.A.Osborne
2002-02-04 22:23 norman
2002-02-15 0:07 John Holden
2002-06-04 11:53 Szigeti Szabolcs
2002-06-04 23:34 ` Warren Toomey
[not found] <200206050222.g552MHm88208@minnie.tuhs.org>
2002-06-05 11:54 ` John Chung
2002-06-05 18:49 Ian King
2002-06-06 7:07 ` Szigeti Szabolcs
2002-06-06 10:20 ` Warren Toomey
2002-06-06 17:02 Mike Haertel
2002-06-11 22:31 ` Peter Jeremy
2002-06-11 22:52 ` Mike Haertel
[not found] <20020707154509.A172@muppet.labs.de>
2002-07-08 1:09 ` Warren Toomey
2002-07-08 10:33 ` Sven Dehmlow
2002-07-08 13:52 ` SZIGETI Szabolcs
2002-07-08 14:15 ` Warren Toomey
2002-08-22 20:52 [TUHS] " russ
2002-08-22 21:23 ` Peter Jeremy
2002-08-22 23:56 ` Warren Toomey
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