On 13 Jun 2012, at 01:04, Boyanich, Alastair wrote:
This looks like it might be cute to run SIMH on.. there was the Rpi VAX cluster doing the rounds yesterday, but these things came out today (..wonder what tomorrow will bring) for $49 .. with twice the ram, 800Mhz ARMv11 core (Rpi is ARMv6 afair? Please correct me).
http://apc.io/
No, the Raspberry Pi CPU is ARM11 (note, no v) 700MHz Broadcom BCM2835 SoC which is ARMv6 (the Linux distro I run debian armv6l). It's quite confusing, there are a few number schemes that all relate to different things with ARM and I don't fully understand them.
http://www.raspberrypi.org/faqs
That so-called 'APC8750' board is a VIA Neo-ITX board also. The CPU setup looks almost identical to the RPi one save for the extra RAM and 100MHz.
http://www.tomshardware.com/news/VIA-APC-8750-WonderMedia-ARM-Neo-ITX,15721…
--
Mark Benson
http://DECtec.info
Twitter: @DECtecInfo
HECnet: STAR69::MARK
Online Resource & Mailing List for DEC Enthusiasts.
This looks like it might be cute to run SIMH on.. there was the Rpi VAX cluster doing the rounds yesterday, but these things came out today (..wonder what tomorrow will bring) for $49 .. with twice the ram, 800Mhz ARMv11 core (Rpi is ARMv6 afair? Please correct me).
http://apc.io/
Al.
From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On Behalf Of Mark Wickens Sent: Tuesday, 12 June 2012 11:06 PM To: hecnet at Update.UU.SE Subject: [HECnet] Fwd: [Simh] Pi VAX Cluster
-------- Original Message --------
Subject:
[Simh] Pi VAX Cluster
Date:
Tue, 12 Jun 2012 13:59:13 +0100
From:
Sevan / Venture37 <venture37 at gmail.com>
To:
simh at trailing-edge.comhttp://www.designspark.com/content/raspberry-pi-vax-cluster
Andrew Back blogged about running a VAX cluster with simh on the Pi
Sevan / Venture37
_______________________________________________
Simh mailing list
Simh at trailing-edge.comhttp://mailman.trailing-edge.com/mailman/listinfo/simh
El 11/06/2012, a les 23:55, gerry77 at mail.com va escriure:
On Mon, 11 Jun 2012 20:08:37 +0200, you wrote:
KLH10 does not seem to have an idle loop detection like SIMH does. The Panda
TOPS-20 uses some sort of virtual device to make the host aware if it is
idling, but the regular TOPS-10 monitor does not, so it's using the 100% of
the CPU time of the host virtualbox machine. So if I don't cap it it ends
topping one of the cores of the "real" host machine. And the it gets hot :)
You can easily patch either the actual TOPS-10 monitor or the sources used to
generate a custom monitor. Then it will behave like the TOPS-20 Panda monitor.
KLH10 implements a special device that forces the emulator to sleep until the
next interrupt, e.g. the interval timer. That device does its thing whenever
is "called", and that's just only one single Macro instruction.
If you'll want to give it a try, just ask: it's quite easy... :)
HTH,
That sounds fun, but I have zero knowledge about PDP-10 assembly language :). I pretend to learn a little bit of it, but I haven't done it yet (one more thing in the huge list of thinks I want to learn).
Jordi Guillaumes i Pons
jg at jordi.guillaumes.name
HECnet: BITXOV::JGUILLAUMES
On Mon, 11 Jun 2012 20:08:37 +0200, you wrote:
KLH10 does not seem to have an idle loop detection like SIMH does. The Panda
TOPS-20 uses some sort of virtual device to make the host aware if it is
idling, but the regular TOPS-10 monitor does not, so it's using the 100% of
the CPU time of the host virtualbox machine. So if I don't cap it it ends
topping one of the cores of the "real" host machine. And the it gets hot :)
You can easily patch either the actual TOPS-10 monitor or the sources used to
generate a custom monitor. Then it will behave like the TOPS-20 Panda monitor.
KLH10 implements a special device that forces the emulator to sleep until the
next interrupt, e.g. the interval timer. That device does its thing whenever
is "called", and that's just only one single Macro instruction.
If you'll want to give it a try, just ask: it's quite easy... :)
HTH,
G.
El 10/06/2012, a les 0:33, Peter Lothberg va escriure:
Now I've got another problem. The TOPS-10 node goes yo-yo:
(...)
$
It's outside tops10, I guess, and I'm completely lost there. If my
braincells starts to work I will rember how to log all the DECnet
packets on the -10 side.
--P
Its fixed now. I'm running the PDP-10's in a virtualbox VM, and I'm using a virtualbox feature that allows to cap the %CPU of the host CPU the VM can use. If I cap it to under 40% the virtual ethernet devices begin to drop packets and the yo-yoing begins. Curiously, TOPS-20 is more resilient and, although I see its ethernet dropping as much packets as the TOPS-10 one it does not drop itself from the network...
KLH10 does not seem to have an idle loop detection like SIMH does. The Panda TOPS-20 uses some sort of virtual device to make the host aware if it is idling, but the regular TOPS-10 monitor does not, so it's using the 100% of the CPU time of the host virtualbox machine. So if I don't cap it it ends topping one of the cores of the "real" host machine. And the it gets hot :)
Jordi Guillaumes i Pons
jg at jordi.guillaumes.name
HECnet: BITXOV::JGUILLAUMES
On 11 Jun 2012, at 16:35, Mark Benson wrote:
He he, well, I guess it's a good name to choose.
How about I make it more generic: mypivax ?? :P
How about VAXPI? ;)
I like to name my hosts after monkeys, think I'd call it LORIS. It's small and slow.
Sampsa
... and I've posted an article about SIMH networking enhancements in version 3.9. I hope I've not done too many mistakes, and that it could be minimally useful :)
http://ancientbits.blogspot.com
Jordi Guillaumes Pons
HECnet BITXOV::JGUILLAUMES
The timeout is currently set to 2 billion seconds. This "should" not be
a problem for most people. :-)
I may reduce it to a week if this timeout causes me any grief.
It was still going up and down.
I did shut the circuit down on my side to improve overall stability,
let me knew when there is any progress in conecting to the Internet.
-P
On 08/06/12 08:35, Mark Wickens wrote:
There are copies of WordPerfect for Solaris currently available on ebay UK.
I asked the question about WordPerfect for VMS on comp.os.vms - turns out there is a company still selling it. However, when I mentioned I was a hobbyist the communications went silent.
Mark.
Fri, Jun 8, 2012 at 4:40 AM, Dave McGuire <mcguire at neurotica.com> wrote:
On 06/07/2012 11:37 PM, Boyanich, Alastair wrote:
> There was wordperfect on VMS? Wow.
>
> I used to use the shared version of it on SCO in the early 90's. I
> didn't know there was a VMS version. That'd be interesting to see.
There was even a version for SunOS, with a fairly respectable WYSIWYG
GUI. I used that quite a bit Back In The Day(tm). I think I still have
it somewhere.
Those binaries will likely run under current Solaris on UltraSPARC;
I've been amazed at the degree of both architectural and ABI
compatibility between BSD-based SunOS 4 and SysV-based Solaris.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
Quick update,
I received my WordPerfect for Unix package today.
Two very hefty manuals, an installation guide and three CDROMs.
Although the ebay advert mentions SUNOS/Solaris the following are also included:
HP-UX, RS/6000 AIX, SCO, UnixWare and AT&T GIS 3000, SGI, Siemens Nixdorf
Unfortunately no Digital Unix/tru64, which is what I was secretly hoping for :(
Mark.
--
http://www.wickensonline.co.ukhttp://declegacy.org.uk
