[Info-vax] VMS Alpha emulator

Chris Townley news at cct-net.co.uk
Fri May 28 20:19:00 EDT 2021


On 29/05/2021 00:57, Arne Vajhøj wrote:
> On 5/28/2021 7:50 PM, gah4 wrote:
>> On Friday, May 28, 2021 at 6:50:00 AM UTC-7, Chris Townley wrote:
>>> I think FreeAXP has improved. I use it extensively - you are limited in
>>> the free version to 128Mb, a single SCSI bank and 1 NIC.
>>
>> Real 128M or virtual?  Swapping from a RAM disk should be really fast 
>> compared
>> to 30 year old hardware.  But if it is virtual, it is more of a problem.
> 
> I believe it is emulated VMS RAM.
> 
> So:
> 
>                    |--128 MB VMS RAM--128 MB virtual memory on PC
> processes on VMS--|
>                    |--VMS disk--container file on PC
> 
> If the PC has SSD disk then it is a lot faster than the original RZ 
> disks. But I suspect some overhead.
> 
> Arne
> 

The FreeAXP docs refers to virtual RAM, but as I have 32Gb RAM, I only 
have very small swap file - only on an M2 SSD

-- 
Chris Townley



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