[Simh] Simh Digest, Vol 26, Issue 4

[bsupnik at comcast.net]

I just pulled the zip file off the web:

VAX simulator V3.5-1
sim> sho cpu mod
CPU     EXTENDEDMEMORY, NOEXTENDEDMEMORY, 8M, 16M, 32M, 48M, 64M, 
128M, 256M, 512M, SIMHALT, CONHALT, HISTORY, DEBUG, NODEBUG
CPU     DEBUG=INTEXC,REI,CONTEXT
sim> set cpu 512m
sim> sho cpu
CPU, 512MB, HALT to SIMH
sim>

This is on Windows XP SP2 on a PC with 1GB memory.

If the error is "Memory exhausted", then you don't have enough (virtual or physical) memory to support the malloc (512MB) needed to allocate simulated memory.  Check the size of your paging file (under advanced performance options under system properties).

/Bob Supnik

/Bob
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> Today's Topics:
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>    1. Pre-built Windows SIMH Vax and memory limitation (Dr Robert Young)
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Tue, 10 Jan 2006 22:27:47 -0500
> From: Dr Robert Young <rcyoung at aliconsultants.com>
> Subject: [Simh] Pre-built Windows SIMH Vax and memory limitation
> To: simh at trailing-edge.com
> Message-ID: <7E0FE7DA-2251-48E4-8FE1-6531B8BA7791 at aliconsultants.com>
> Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed
> 
> I pulled down the ethernet supported Vax version of the Windows   
> executables for SIMH from http://simh.trailing-edge.com ( the pre- 
> built ones) . However, I can not go above 128Mb memory without  
> getting an error. I have built SIMH "from scratch"  on Mac OS/X from  
> the sources,  and can set the memory up to 512M.
> 
> Are the prebuilt Windows (I am running XP) versions memory limited? I  
> am using the ka665x.bin file. I don't have a Windows compiler  
> installed at present (although I could install an older Borland if  
> necessary, but I would prefer not to).
> 
> Does anyone have a Windows SIMH executable for Vax built with  
> ethernet (I have WinpCap 3.0 installed) and extended memory I could  
> try out??
> 
> Mac OS/X has a limit at present on the size of the disk image files.   
> I am trying to see if the Windows Vax SIMH simulator will let me  
> define a "larger" disk.
> 
> _______________________________________________________
> 
> Dr. Robert Young
> 
> 
> 
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> End of Simh Digest, Vol 26, Issue 4
> ***********************************