Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!uunet!ogicse!milton!roger
From: roger@wrq.com (Roger Fulton)
Newsgroups: comp.os.msdos.programmer
Subject: System Information
Message-ID: <13635@milton.u.washington.edu>
Date: 1 Jan 91 23:00:15 GMT
Sender: news@milton.u.washington.edu
Organization: Walker Richer & Quinn, Inc., Seattle, WA
Lines: 19

How do programs like Manifest report the TOTAL amount of extended
memory in a PC?  I tried int 15h with ah=88h, but that only
reports the amount of FREE extended memory (i.e., that which
isn't being used by a program like QEMM).  I've perused all the
DOS references I have (Norton, Brady, etc.) and they all point to
int 15h, ah=88h.

Also, I need some tips on how to know if XMS is installed, and if
so, what version it is and how much memory it's using.

Lastly, is there a reliable way to programatically distinguish a
80386 from a 80486?  PC Mag had some code for this, but it
crashed my machine if I had QEMM installed (with exception #13, I
think).

Thanks in advance.

Roger Fulton
roger@wrq.com