Maybe a brief discussion of this topic could be added to the SIMH FAQ. It
seems like a key piece of information to help others kick-start their attempts
to run VMS/OpenVMS under SIMH.
-Original Message-
From: Simh [mailto:simh-boun...@trailing-edge.com] On Behalf Of Brian
Sent: Monday,
Many thanks Tim for your selfless years of dedication to SIMH. We appreciate
your efforts and are equally frustrated by the impact “bad actors” have had on
the Internet and all who use it.
PS: Maybe once the migration to groups.io is done, there is an opportunity to
donate a copy of the
Bill
Have you ever given any thought to emulating the Intel iPDS system running
ISIS-II ?
They were the white and black portable little brother of the MDS family. We
had one once, which we called Big Blue because of its sheer physical size.
Those MDS 8" floppies were really something.
Dan
What exact version of Pascal compiler are you using ? (presumably you are
using OpenVMS 7.3 on a VAX as the operating system)
What is the exact message the complier gives concerning the writeln() function?
Can you generate a simple “proof of concept” and share what you are doing ?
Another good terminal emulator was WRQ's Reflection 2. Of course, it was not
freeware/shareware, but it ran well, and had its own file transfer protocol
built in. For VAX/VMS hosts, once you uploaded a minimalist bootstrap program
(a simple copy-paste operation of a DCL script that embedded
Clem and all
Your knowledge of this and many other obscure (and not-so-obscure) subjects
from the “early days” never ceases to amaze me. If only there was a way to
capture all these anecdotes into one coherent “Wikipedia of computing history”
… Many of these stories are absolutely
Zane
The program that Johnny is thinking of is VMSPTC
http://www.digiater.nl/openvms/decus/vax86a/bnelson/vmstpc/vmstpc.c
Note sure if this is the latest, but it came up in the first set of Google
search results for "VMSTPC"
Good luck
Jason
-Original Message-
From: Simh
If you need accurate device timing, then perhaps something like the core of
MAME/MESS is a better choice than SIMH. All those retro arcade machine games
in MAME depend on counting cycles in order to give realistic game behavior for
the human who is playing them. If they ran twice as fast,
Johnny Billquist wrote:
>However, this might be different on different CPU models, so I suspect this
>should be applied with care.
>He was testing VAX/VMS V4.5, which is pretty ancient. The models supported by
>that version would probably only be the VAX-11 models. (And yes, I include the
Malcolm
After looking at the photos you took of the ROM cartridge internals I think you
might be better leaving them in-place and making up an adapter from the edge
connector to a 28 pin socket that you could plug into an EPROM programmer. By
the looks of it, there's no chip selection/data
Tim
Malcolm had previously indicated that E80 was a Xicor X2804AP-45 chip. That
would make it a 512 byte (4096 bit arranged as 512 * 8) EEPROM, rather than an
NVRAM, with an access time of 450ns.
Link to datasheet
http://pdf1.alldatasheet.com/datasheet-pdf/view/103364/XICOR/X2804A.html
A DS200 fits in a standard 19 inch rack.
Refer to page E-2 of the DS200 hardware installation guide for precise
dimensions and weight:
http://bitsavers.informatik.uni-stuttgart.de/pdf/dec/ethernet/decserver_200/EK-D200C-IN-001_DECserver_200_Hardware_Installation_Oct86.pdf
From: Simh
Interesting to see stories like these appearing on Google News today:
"US nuclear force still uses floppy disks"
http://www.bbc.com/news/world-us-canada-36385839
"The long legacy of the floppy disk"
http://www.bbc.com/news/technology-36389711
Long live the floppy disk, retrocomputing, and
One tool that I have found useful in the past is tiffcp, which is part of the
tools in the libTIFF distribution.
http://www.remotesensing.org/libtiff/tools.html
tiffcp makes it easy to combine multiple TIFF images into a single TIFF file.
tiff2pdf makes it easy to convert that multi-page TIFF
n the disk, then this scheme wouldn't
work.
-Original Message-
From: Simh [mailto:simh-boun...@trailing-edge.com] On Behalf Of Armistead,
Jason .
Sent: Wednesday, April 20, 2016 1:31 PM
To: simh@trailing-edge.com
Subject: Re: [Simh] Way out idea for simh
One thing that I don't think has been
One thing that I don't think has been mentioned is that the guest OS being run
under SIMH might not take kindly to data changing on these new devices that are
being proposed.
I would expect the guest OS doesn't expect things to "magically happen",
because it (quite rightly) believes it is the
And now for a bit of a diversion after an otherwise fairly quiet week on the
SIMH mailing list ...
Last week I was watching a DVR-ed recording of Arrow on the CW network
(http://www.cwtv.com/shows/arrow ). The particular episode was "Beacon of
Hope". Just a few minutes in, as the last of the
Let's move this to a new thread subject of its own !
On Tuesday, 23 February 2016 12:04 PM, Davis Johnson wrote
(under old subject Re: [Simh] Interdata OS/32: hello-world in CAL32) :
> One that I remember was TI had a 9900 cross assembler written in FORTRAN (all
> caps in
On Feb 23, 2016, an anonymous user (li...@openmailbox.org) wrote:
> Thanks very much for the additional info. Your post was very timely since I
> read in the notes that come with the PL/M cross compiler
> that is being discussed that it was a cross-compiler hosted on MTS and VM/CMS.
> I don't
s not the version
> required to compile CP/M 2.2 or 3.0. It works well, but lacks support for
> external definitions and some PLM constructs, as required by the DR source.
On Mon, Feb 22, 2016 at 9:04 AM, Clem Cole <cl...@ccc.com> wrote:
below
On Mon, Feb 22, 2016 at 10:31 AM,
Sorry for this off-topic posting, but with all the recent talk about Intel's
history of x86 development, I was wondering whether there are any "Intel
connected" people around here who might know what happened to the source code
for Intel's PL/M-86, ASM86 and iAPX-86 Utilities (LINK86, LOC86,
On Thursday, 11 February 2016 12:23 PM Kevin Handy wrote:
> Nowodays, many people haven't even heard a dot-matrix printer grinding away,
> let alone the huge mass of fans that seemed to make up most of an 11/70.
> Daisy weel printers are also extremely rare now. Line printers (drum, chain,
>
On 2/9/16 11:41 PM, Zachary Kline wrote:
> This is around 50% humorous, but it’s still a thing I’ve been thinking about
> lately. From a newbie’s perspective, all SIMH machines are very similar. The
> worst thing about emulation is that the “feel,” of the original hardware
> doesn’t seem to be
Al Kossow wrote:
> here is the SPD
>
> http://h18000.www1.hp.com/info/SP1418/SP1418PF.PDF
And the second page of the SPD even mentions "On-line Debugging Technique
(ODT)" - the topic of one of our other recent SIMH mailing list threads !!!
___
Simh
On the topic of Configuring DMC11 Devices, while discussing wait delays Mark
Pizzolato recently wrote:
> Sounds reasonable. I've got to see if I can find the reason the delay was
> initially added and make sure a change like this is compatible.
What is the "SIMH strategy" for documenting such
Patrick Finnegan wrote:
>DEC's DECserver, Xyplex Maxserver, Annex terminal servers, and Xylogics (for
>the ones I have touched and remember) all converted telnet into
> real RS/EIA-232 lines. (telnet client -> host serial, or serial terminal ->
> host telnet server)
Rich Alderson wrote:
>DECNET is available under RSX-11M and RSTS/E on PDP-11s, Tops-10 and TOPS-20
>on PDP-10s, and under VMS (and possibly Ultrix, I don't remember for certain)
>on VAXen, and on VMS follow-on systems. It is as far as possible agnostic
>about what kind of system it was running
I actually find it interesting how much it reveals about the target e-mail and
account configuration
We know he's running VMS
We know he has a disk called $DISK3:
We know his user space is under $DISK3:[MARK]
And we know we've successfully filled his disk, thus denying some level of
service and
Surely it is possible to extract files from SETUP.MSI without running the
installer. Someone must have the tools to do this (either commercial or
freeware perhaps ?).
Another alternative is to run a virtual Windows OS image inside something like
VirtualBox, thus avoiding any problems
Dying RFxx disks might be due to failure of FLASH memory in the controllers
(either onboard the CPU or external chips). The charge in the memory cells in
FLASH memory chips doesn't last forever, and slowly bleeds away. Early devices
could fail after 10 years. Newer FLASH parts are better,
Out of curiosity, I did a bit of Googling, and found a link to the following
Digital Technical Journal article from 1992 that explains GEM in detail. It
also gives the biographies of a number of the key players involved with GEM – I
wonder how many Clem still has sitting in his office these
So now that Alan has TPC working, where and how do we document all this, i.e.
the symptoms, the underlying SIMH design behavior vs the expected RSX
behavior that cause it to manifest itself as a problem, and the DEP TS TIME
solution, in an easy-to-find way so the next person doesn't have to go
One of the recent discussions on this list mentioned ZK3
I remember it also appeared in numerous DEC publications, with e-mail addresses
@zk3.digital.com, and, I think, in some DEC documentation (though I may be
wrong on that point)
What exactly was ZK3 ? I'm gathering it was possibly a
Gérard
SIMH has a console terminal connection. This is activated after SIMH starts up
by creating a Telnet connection to port 1 on your host (or else it times
out). That implies that the IP protocol be activated on at least one network
interface on your host.
Jason
-Original
I had trouble with Timothe’s link to the USPTO, but found this same patent in
PDF form at
http://www.brouhaha.com/~eric/retrocomputing/dec/dectape/3387293.pdf
As a relative newbie who started my serious journey into computing with an
Apple ][ I’ve never fully understood DEC’s fascination with
Why not go all the way and record video of each type of old hardware in action
? Obviously this makes no sense for blinkenlights, but it might be fun to
watch tape drives spinning back and forth (a series of short sequences of video
for each operation), or maybe someone opening up a disk pack
: Jason Stevens [mailto:neoz...@gmail.com]
Sent: Monday, 2 May 2011 9:59 AM
To: Armistead, Jason
Cc: simh@trailing-edge.com
Subject: Re: [Simh] Running and compiling SIMH under 64-bit Windows 7
I'm using VS 2010 professional... As far as I remember the express
stuff is 32bit only. The platform SDK's
So now the real question from this discussion becomes …
“How do “we” (initially Bob Supnik and perhaps the SIMH users/contributor base)
track the “core” and “per platform” SIMH requirements ?”
which then leads on to the whole issue of test cases for requirements
validation, functional
While discussing SIMH futures, Vince Mulhollon wrote:
I use a bash script that automates:
wget's some relevant papertape or whatever of diagnostic routine
runs a short expect script on simh pdp8 or whatever that executes the
diagnostic routine and saves the disk images etc.
md5sum the
Previously, Nigel Hornen...@bandsman.co.uk wrote:
and SIMH, originally, was not open source in the sense that any
responsible programmer could contribute.
The quality of the software and the ultimate decision on released
functionality was always in the hands of Bob S.
And a mighty fine job
Tim
Doing a bit more digging, it looks like if I just use the SIMH “RAUSER” disk
type, and give it a size large enough for my needs, I’ll be OK. The
precompiled SIMH binaries for Windows include 64 bit file support so I can go
bigger than 2Gb without any problems.
I also came across a
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