Restoring Remapped Interrupt Vectors

Product Version(s): 3.3x
Operating System:   MS-DOS
Flags: ENDUSER | TAR53039
Last Modified: 23-FEB-1988    ArticleIdent: Q11709

Problem:
   When you define interrupt service routines using Microsoft Pascal
Version 3.3x under MS-DOS, the interrupt vector will not always be
restored to its original value after program termination.

Response:
   Pascal will not allow you to automatically restore remapped interrupt
vectors. If you want to remap interrupt vectors, you will have to use
DOS functions 25H and 35H to both change and explicitly restore the
vectors.