From: lm@bitmover.com (Larry McVoy)
Subject: [TUHS] Need a new PDP-11 or VAX?
Date: Sat, 27 Apr 2013 20:48:13 -0700 [thread overview]
Message-ID: <20130428034813.GU664@bitmover.com> (raw)
In-Reply-To: <CAH1jEzatvkMCQ=kmk=qTznoS=-mZ-mFoWZy95TiKBJp3e_z_bw@mail.gmail.com>
The 68020 came close.
On Sun, Apr 28, 2013 at 01:38:47PM +1000, Nick Downing wrote:
> I think the 68K came fairly close to what you guys are asking for, with its
> addressing modes like (a0)+ and so on. it's only 32 bit but that's better
> than 16 bit :) the problem I have with 68K is that while the assembly
> language is basically orthogonal the machine code is not, there are too
> many exceptions in the encoding, which I think was done to save precious
> code space. (Kind of like ARM Thumb code -- and by the way you may find ARM
> more PDP11-like than the other archs you mentioned). Anyway, some of the
> latest 68K such as Dragonball(?) have gone some way towards correcting this
> deficiency by not implementing many of the more irregular insns.
> cheers, Nick
> On Apr 28, 2013 12:00 PM, "John Cowan" <cowan at mercury.ccil.org> wrote:
>
> > Larry McVoy scripsit:
> >
> > > What I'd like is a new 64 bit PDP-11.
> >
> > With a 16-bit instruction stream still, or with wider instructions and
> > more registers, almost but not quite entirely unlike the Vax?
> >
> > --
> > De plichten van een docent zijn divers, John Cowan
> > die van het gehoor ook. cowan at ccil.org
> > --Edsger Dijkstra http://www.ccil.org/~cowan
> > _______________________________________________
> > TUHS mailing list
> > TUHS at minnie.tuhs.org
> > https://minnie.tuhs.org/mailman/listinfo/tuhs
> >
> _______________________________________________
> TUHS mailing list
> TUHS at minnie.tuhs.org
> https://minnie.tuhs.org/mailman/listinfo/tuhs
--
---
Larry McVoy lm at bitmover.com http://www.bitkeeper.com
next prev parent reply other threads:[~2013-04-28 3:48 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-27 21:26 Dave Horsfall
2013-04-27 22:41 ` Larry McVoy
2013-04-27 23:53 ` Dave Horsfall
2013-04-28 0:12 ` Ronald Natalie
2013-04-28 1:39 ` John Cowan
2013-04-28 3:38 ` Nick Downing
2013-04-28 3:48 ` Larry McVoy [this message]
2013-04-28 3:57 ` Larry McVoy
2013-04-28 5:57 ` John Cowan
2013-04-28 5:34 ` [TUHS] curmudgeon credit Aharon Robbins
2013-04-28 7:08 ` Nick Downing
2013-05-14 6:11 ` Aaron J. Grier
2013-05-14 6:52 ` emu
2013-05-14 7:51 ` David Evans
2013-04-28 16:28 ` Larry McVoy
2013-04-28 7:45 ` [TUHS] Need a new PDP-11 or VAX? Peter Jeremy
2013-04-28 10:50 ` Ronald Natalie
2013-04-28 0:15 ` Ronald Natalie
[not found] <mailman.3.1367200802.17183.tuhs@minnie.tuhs.org>
2013-04-29 23:19 ` David Barto
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