What keeps getting missed is the reason why a functionality to extend past
the 4GB limit is not available to Windows clients like XP so that us
technology enthusiasts can romp and play in Big Memory Land.

Dennis is saying it could be done and that is true. He is saying therefore
MS chose not to enable it in Windows clients and faults them for not doing
so. That's where I disagree. My take on that point is that MS concluded
that PAE is not the solution they wanted to present to Windows client users
because moving on to 64bit Windows clients was the more robust solution by
far.

There isn't much beyond this point that is getting anywhere in this thread.
The technical woulda, coulda, shoulda stuff really misses the point of why
MS didn't bother to use PAE to address the 4GB limitations in 32bit Windows
clients.

Providing 64bit operating systems is a far better resolution of the issue
than a workaround for 32bit. For that I applaud MS, not fault them.

"Charlie Tame" wrote in message
...
Yes Dennis was correct but so is the 4GB limit if some other technology is
not used. My point was that if "Something else" is not used then the
original statement that there is a 4GB limit was correct.

Curious wrote:
As Colin pointed out in one of his posts yes you can support more the 4GB
of physical memory with a 32bit OS if you provide different threads/users
each with their own individual logical memory map which is limited to no
more the 4GB. 32 bit Server Operating systems have used this technique
for years to support large large numbers of users on large memory
systems. Also by providing separate logical memory maps for different
users servers are able to insure that the programs or data being used by
one user can not be corrupted by another server user.
Dennis is correct when he states that with a 32 bit OS that supports
memory mapping one can develop an application that use more then 4GB of
physical memory by spreading the functionality across multiple processes
each of which is limited to its own 4GB of logical address space.

"dennis" wrote in message
...
Charlie Tame wrote:

But I could NOT use BASIC routines and the underlying RAM at the same
time.

Try and count the number of address pins on a 32-bit CPU that supports
36bit PAE, and tell me if anything needs to overlap



Yes he