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OpenVMS Hobbyist Program | VAX Systems Forums | Emulated VAX Forum
Author SIMH/VAX CPU Model
imiller
Administrator

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Posts: 277
Location: UK
Joined: 24.02.06
Posted on March 31 2010 02:00
Does SIMH/VAX only emulate the 11/780 or can it emulate other VAX models?
http://www.encompasserve.org/~miller/
Author RE: SIMH/VAX CPU Model
reinhardtjh
Member

Posts: 32
Location: Fort Worth, TX, USA
Joined: 15.12.05
Posted on March 31 2010 09:36
By default SimH simulates a MicroVAX 3900. You can optionally set it to be a VAX-11/780. I think those are the only choices for VAX CPU emulation.

The published list of emulated CPUs is at Available Simulators
Author RE: SIMH/VAX CPU Model
imiller
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User Avatar

Posts: 277
Location: UK
Joined: 24.02.06
Posted on April 01 2010 03:54
Thanks for that, I somehow missed that page when looking smiley
http://www.encompasserve.org/~miller/
Author RE: SIMH/VAX CPU Model
matt002
Member

Posts: 12
Joined: 31.03.10
Posted on April 01 2010 12:14
Simh has two executables for VAX emulation.
One can emulate either a VAXserver 3900 or a MicroVAX 3900. You can toggle between the two by editing the ROM. Instructions on how to do this are in the Simh FAQ but note that the procedure described uses the PDP11 emulator to do the ROM edit and not the VAX emulator.

The other VAX emulator bundled with Simh is the VAX-11/780. This can be modified to emulate a VAX-11/785 with a simple change to the code. In vax780_defs.h change the following line (near the top of the file) from:

#define VAX780_ECO (7 << 19)

to:

#define VAX780_ECO (373 << 15)

and recompile. This will emulate a VAX-11/785 revision 14 F manufactured at NI (Salem FA&T) smiley

I am currently modifying Simh to emulate a few different models of VAX. These may not be completed anytime soon as I don't have much time to work on them at the moment. They are:

MicroVAX II - 90% complete. Can boot OpenVMS in minimum startup mode only. NetBSD seems to work OK.

MicroVAX 2000 - 50% complete. Can run to console prompt only. Not booted yet.

VAX-11/730 - 20% complete. Can boot to OpenVMS banner then hangs.

Hopefully I will get round to releasing at least the MicroVAX II at some point.

Matt
http://www.9track.net/
Author RE: SIMH/VAX CPU Model
astrodanco
Member

Posts: 36
Joined: 04.03.10
Posted on May 18 2010 04:52
A VAXstation 4000 emulation might be more popular?
Author RE: SIMH/VAX CPU Model
matt002
Member

Posts: 12
Joined: 31.03.10
Posted on June 01 2010 02:50
I started with the MicroVAX II because it was not too far removed from the MicroVAX 3900 and therefore was quite good for a starting project. Likewise with the 11/730, I am using the 11/780 as a starting point.

The MicroVAX 2000 however is a bit more complicated but I think it will provide a stepping stone to the 3100 series and then possibly to the 4000s.
http://www.9track.net/
Author RE: SIMH/VAX CPU Model
alexbuell
Member

Posts: 8
Joined: 27.09.10
Posted on October 06 2010 09:37
I'll be looking forward to these new VAXen most eagerly smiley
Author RE: SIMH/VAX CPU Model
matt002
Member

Posts: 12
Joined: 31.03.10
Posted on July 11 2011 13:32
I'm posting this here for the benefit of those who do not follow the Simh mailing list.

It's been a long time since my last post but a lot of progress has been made. All 3 of the emulators mentioned above are available for download on my website (www.9track.net). They are Win32 binaries for now although the source is available for the 11/730.

Matt
http://www.9track.net/
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malmberg
August 04 2022
No more VAX hobbyist licenses. Community licenses for Alpha/IA64/X86_64 VMS Software Inc. Commercial VMS software licenses for VAX available from HPE.

ozboomer
July 20 2022
Just re-visiting.. No more hobbyist licenses? Is that from vmssoftware.com, no 'community' licenses?

valdirfranco
July 01 2022
No more hobbyist license...sad

mister_wavey
February 12 2022
I recall that the disks failed on the public access VMS systems that included Fafner

parwezw
January 03 2022
Anyone know what happened to FAFNER.DYNDS.ORG? I had a hobbyist account here but can longer access the site.

gtackett
October 27 2021
Make that DECdfs _2.1A_ for Vax

gtackett
October 27 2021
I'm looking for DECdfs V2.4A kit for VAX. Asking here just in case anyone is still listening.

MarkRLV
September 17 2021
At one time, didn't this web site have a job board? I would love to use my legacy skills one last time in my career.

malmberg
January 18 2021
New Hobbyist PAKs for VAX/VMS are no longer available according to reports. Only commercial licenses are reported to be for sale from HPE

dfilip
January 16 2021
Can someone please point me to hobbyist license pak? I'm looking for VAX/VMS 7.1, DECnet Phase IV, and UCX/TCPIP ... have the 7.1 media, need the license paks ... thanks!

Bart
October 16 2020
OpenVMS, and this website!

malmberg
September 05 2020
VSI community non-commercial licenses for AXP/IA64 are available now.

malmberg
September 05 2020
See the forum about licensing. Don't know if HPE hobby licenses still being issued. Commercial licenses still being sold.

silfox70
September 01 2020
I need the license for OpenVMS7.3. Where can I find them?

malmberg
August 29 2020
Eisner, which is currently being moved, got an SSH update and the keys were updated to more modern encryption standards.

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