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From: vass@cbnewsl.ATT.COM (srinivas.vasantharajan)
Newsgroups: comp.sys.ibm.pc
Subject: EMS 4.0
Message-ID: <3631@cbnewsl.ATT.COM>
Date: 12 Jan 90 20:04:47 GMT
Reply-To: vass@cbnewsl.ATT.COM (srinivas.vasantharajan,sf,)
Distribution: usa
Organization: AT&T Bell Laboratories
Lines: 20

Folks
         According to LIM EMS3.2, the page frame in the conventional memory
maps only 4 16K pages. I have read some material that EMS4.0 allows non
contiguous page frames and allows access to more than 4 physical pages.
In 3.2 I can find the address of each physical page by offseting n * 16K 
from the page frame to get at address of the physical pages. How can I do
this with 4.0 (find page addresses) with non contiguous page frames and
more than 4 physical pages.

         Second what do the functions 25 subfunctions 0 and 1 provide me ?. 
According to the materials I have, function 25 subfunc 0 gives me the number
of entries in the mappable physical addresses array and function 25 subfunction
0 gives me an array of segment addresses and physical page nos. I am not
sure how to use the information contained in this array ?

I would appreciate if somebody can help me.

Thanks

vas@attunix.att.com