Article View: comp.sys.ibm.pc
Article #41397EMS 4.0
From: srinivas.vasantharajan
Date: Fri, 12 Jan 1990 20:04
Date: Fri, 12 Jan 1990 20:04
20 lines
1344 bytes
1344 bytes
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
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!cs.utexas.edu!tut.cis.ohio-state.edu!att!cbnewsl!vassShow Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!cs.utexas.edu!tut.cis.ohio-state.edu!att!cbnewsl!vass 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