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Path: utzoo!watmath!clyde!ima!johnl
From: johnl@ima.UUCP
Newsgroups: comp.sys.ibm.pc
Subject: Re: DOS function 4Bh and 2.11
Message-ID: <469@ima.UUCP>
Date: Sat, 31-Jan-87 16:16:24 EST
Article-I.D.: ima.469
Posted: Sat Jan 31 16:16:24 1987
Date-Received: Sat, 31-Jan-87 23:55:05 EST
References: <975@nbires.UUCP>
Reply-To: johnl@ima.UUCP (John R. Levine)
Organization: Javelin Software Corporation
Lines: 15
Summary: famous DOS bug

In article <975@nbires.UUCP> mmm@nbires.UUCP (Michelle Melvin) writes:
>it seems i have a little problem.  dos function 4bh, subfunction 3 
>(load overlay) will corrupt the loaded program.  ...
I had the same problem with PC-DOS 2.0, the load overlay function smashes
the calling program.  Kind of makes you wonder what all of those QA people
at Microsoft and IBM spend their time doing.

It seems to work OK in PC-DOS 2.1 and all of the 3.x versions, but since I
was writing a program that we sell to users with all sorts of random
configurations, I reimplemented the function myself.  It turns out that
reading in the code and applying the fixups is not very hard.
-- 
John R. Levine, Javelin Software Corp., Cambridge MA +1 617 494 1400
{ ihnp4 | decvax | cbosgd | harvard | yale }!ima!johnl, Levine@YALE.something
Where is Richard Nixon now that we need him?