Virtual memory

Johnny Billquist bqt at softjar.se
Sat Oct 30 04:38:53 CDT 2010


On 2010-10-30 01:12, Rich Alderson<RichA at vulcan.com> wrote:

> From: Johnny Billquist
> Sent: Thursday, October 28, 2010 2:46 PM
>
>> >  Why are people so hung up on physical memory size vs. virtual memory
>> >  size when they need to define what virtual memory is?
>> >  I just don't get it.:-)
> Perhaps because that's the way the term of art "virtual memory" (whether
> as segments or as pages) has been defined since it was first conceived?
>
> Virtual addressing is necessary for virtual memory.  The converse is not
> true.

Well, it is obviously not a definition DEC agrees with, so I guess that 
means there are two different schools (atleast) here.

And when talking about the VAX (which this thread started with), it 
might be meaningful to use DEC's definition?

	Johnny

-- 
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol



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