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OpenVMS Hobbyist Program | VAX Systems Forums | Emulated VAX Forum
Author Maximum memory that can be used?
alexbuell
Member

Posts: 8
Joined: 27.09.10
Posted on October 06 2010 09:39
I recently tried to boot VMS 5.3 with 512MB and could not get to boot until I reduced the RAM to 128MB. at that point it booted perfectly. OpenVMS 7.3 booted without any problems with 512MB.

What is the maximum memory simh-vax can handle?

Thanks!
Author RE: Maximum memory that can be used?
astrodanco
Member

Posts: 36
Joined: 04.03.10
Posted on November 10 2010 12:17
512MB works fine here with SIMH 3.8-1.

Here is the contents of my SIMH boot script (do boot from simh> prompt):

set cpu 512m
set cpu conhalt
set cpu idle
set lpt disable
set tq disable
set rq0 rauser=8000
attach rq0 vaxvms073.dsk
set rq1 rrd40
attach -r rq1 vaxvms073.iso
set dz lines=4
attach -am dz 1025
show xq eth
set xq mac=00-24-8C-A1-DC-D0
attach xq0 eth2
b cpu
Edited by astrodanco on November 10 2010 12:17
Author RE: Maximum memory that can be used?
abrsvc
Member

Posts: 91
Joined: 12.03.10
Posted on November 11 2010 01:22
This is likely to be VMS version dependent. I will try to look this up, but V5.3 is very old and may not support the full 512MB. Realize that the VAX 8700/8800 was the first to actually be able to have 512MB of real memory. Prior to that, I'm not sure if the hardware structures could handle "real" memory sizes over 128MB. Stay tuned. I'll look up in the release notes (I think I still have them.)

Dan
Author RE: Maximum memory that can be used?
kzsolt
Member

Posts: 14
Location: Budapest, Hungary
Joined: 08.10.09
Posted on March 13 2011 03:44
smiley I Have the problem with OpenVMS 7.3. I can increase the memory to 128m or 256m or 512m, I see it on autoboot vax console, but looks like VMS does not recognize it. The show memory always tell 64M. Just for sure if I decrease it to 32m, then I show 32M on show memory result.

Remark: The PHYSICALPAGES default value is 1048576 and the current is 131072.
Author RE: Maximum memory that can be used?
VolkerHalle
Member

User Avatar

Posts: 96
Location: Germany
Joined: 02.04.10
Posted on March 13 2011 06:45
The PHYSICALPAGES system parameters controls the useable physical memory in OpenVMS VAX. Consider to run AUTOGEN to get the correct value set for PHYSICALPAGES or increase the parameter yourself with a conversational boot.

Volker.
http://www.invenate.de
Author RE: Maximum memory that can be used?
kzsolt
Member

Posts: 14
Location: Budapest, Hungary
Joined: 08.10.09
Posted on March 14 2011 11:58
Thank you!

smiley For me the:
1. set def sys$update
2. @autogen getdata reboot nofeedback
form was the winner...
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malmberg
December 12 2017
HPE only makes the most current version of OpenVMS Alpha / IA64 /VAX available to hobbyists. When I had access to the Alliance 1 program it was the same. No public downloads are allowed by HPE.

nmbonao
December 08 2017
Is anybody knows OpenVMS 8.2 version downloadable version? or CD copy? Thank you very much

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Bitcoin and Blockchain enthusiasts ( plus distributed computing ) please connec / reply: http://www.openvmshobbyis
t.com/forum/viewthread.ph
p?forum_id=130&thread_id=
2991


malmberg
September 10 2017
https://sourceforge.net/p
/vms-ports/wiki/VMSInstal
lation/ For the most part just use VMS 6.1 media instead of 7.3. But why run the older release?


DoeveR
August 07 2017
Where can I find the write up on running VMS 6.1 using the simh emulator?

Bart
March 20 2017
Happy to have found my password again!

pintero
March 16 2017
peteherrera. Agreed.

peteherrera
March 04 2017
It would be nice to be able to buy the lastest hardcopy full OpenVMS docset at a very reduced price through the Hobbyist program. smiley

malmberg
February 05 2017
Decus > Connect > Encompass<Country>

ChrisChiesa
February 02 2017
What's the status of DECUS memberships? Just found my membership card. :-)

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malmberg
December 29 2016
The openvms disks question is frequently answered in the forums, and is not something to ask about in the shout box.

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December 29 2016
Hello, I am in need of the openvms.disk, but I don't know where to obtain it

moch75
December 26 2016
personal alpha

moch75
December 24 2016
personal alpha+

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