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From: amb43790@uxa.cso.uiuc.edu (Anthony M Brummett)
Newsgroups: comp.lang.pascal
Subject: multitasking snag
Summary: can't get SS&SP
Message-ID: <1991Mar12.203716.17161@ux1.cso.uiuc.edu>
Date: 12 Mar 91 20:37:16 GMT
Sender: usenet@ux1.cso.uiuc.edu (News)
Organization: University of Illinois at Urbana
Lines: 12


 I am writing a program in TP 5.5 that will allow MS/PC-DOS 4.01 to run at
least three processeson a time sharing basis.  The procedure that does this is
declared an INTERRUPT and is chained to INT8 (timer interrupt).  It is able to 
read all the registers off of the stack except SS and SP.  Now my questions:"
  1) Does the procedure use the stack of the interrupted program or the stack
     of the program it is in?
  2) If it uses its program's stack, is there a way to retrieve and set the
     saved SS and SP?
Any help would be greatly appreciated.

Antione-------------amb34790@uxa.cso.uiuc.edu