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From: gt6294b@gitpyr.UUCP (SCHEUTZOW,MICHAEL J)
Newsgroups: net.micro.pc
Subject: Re: why does program stop print spooler?
Message-ID: <2247@gitpyr.UUCP>
Date: Thu, 11-Sep-86 15:28:10 EDT
Article-I.D.: gitpyr.2247
Posted: Thu Sep 11 15:28:10 1986
Date-Received: Thu, 11-Sep-86 21:43:45 EDT
References: <729@tekred.UUCP>
Reply-To: gt6294b@gitpyr.UUCP (SCHEUTZOW,MICHAEL J)
Distribution: na
Organization: Georgia Institute of Technology
Lines: 14

>
>I have a C program that stops the print spooler ( the PRINT command).
>The spooler stops printing
>whin this program is in control, and resumes normally when it exits.
>
Does the C-program grab interrupt 28h?  I believe that PRINT uses this
interrupt to achieve a pseudo-form of multitasking.  When the machine
is waiting around for you to type something, it ocassionally calls int
int 28h when it is safe to do so.  See Best of BIX in the Sept issue
of BYTE.

Mike Scheutzow         Trek trivia: In what state was Kirk born?
Georgia Tech
gt6294b@gitpyr.uucp