Message-ID: <158@hocsl.UUCP>
Date: Fri, 31-Aug-84 20:26:53 EDT
Article-I.D.: hocsl.158
Posted: Fri Aug 31 20:26:53 1984
Date-Received: Mon, 3-Sep-84 20:10:20 EDT
Organization: AT&T Information Systems Labs, Holmdel NJ
Lines: 21


I need a little help with a problem I'm having with PC/MS-DOS.
(At least I think the problem is DOS.)

I've built a relatively simple program, in assembler, for
my IBM PC almost-alike.  It ends, as I THINK it should,
with an INT 20H (but I get the same effect with DOS call 0).
The program executes right up to the INT 20 exactly as it should.
But then it hangs, and I have to reboot.  Mysteriously enough,
when run under DEBUG, it works fine and gives the "program
terminated normally" message.

To try to localize the problem, I created a program that does
NOTHING but call INT 20.  Once again, it ran fine under DEBUG,
but hung when called from the command interpreter as a .BIN
file (I get the same problem with a .EXE).

What am I doing wrong?
Thanks in advance for any suggestions.

			Dave Tutelman