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From: jay@umcp-cs.UUCP (Jay Elvove)
Newsgroups: net.micro.pc
Subject: Undocumented DOS Interrupts
Message-ID: <1310@umcp-cs.UUCP>
Date: Mon, 5-May-86 08:00:57 EDT
Article-I.D.: umcp-cs.1310
Posted: Mon May  5 08:00:57 1986
Date-Received: Thu, 8-May-86 04:36:27 EDT
Organization: Computer Sci. Dept, U of Maryland, College Park, MD
Lines: 15

Does anybody have information on DOS interrupt 21H function 52H which
changes the values of ES and BX to point to some sort of table with
presumably lots of useful information therein?

Also, anybody ever heard of interrupt 2AH or, better yet, know what it
does? 

If you're curious, I found each of these used within the code for ASSIGN.COM.
BTW, it's not documented as such but ASSIGN remains resident after you invoke
it.  (So should I load it before SIDEKICK?  :-)   )

Please respond via mail.
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Jay Elvove       ..!seismo!mimsy!jay