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From: jelynch@hubcap.clemson.edu (james e lynch)
Newsgroups: comp.sys.ibm.pc,comp.sys.ibm.pc.misc
Subject: MS-DOS interrupt 10h (Video)
Keywords: MS-DOS, INT 10h, TSR
Message-ID: <12767@hubcap.clemson.edu>
Date: 23 Jan 91 23:27:20 GMT
Organization: Clemson University, Clemson, SC
Lines: 12

I am writing a TSR program in assembly language for MS-DOS 3.xx that requires knowing the video mode from time to time.  Polling the video mode via int 10h is unacceptable, however, I can poll a variable.  My understanding is that I can rewrite the vectored interrupt for int 10h to jump to a location, update a variable and jump to the normal int 10h location.  Since I am not familiar with writing code to do this, would someone please indicate how to do this or preferably write a procedure/subroutine to do 











it.  Please forward any responses to 

jelynch@hubcap.clemson.edu


since I do not use vnews on a regular basis.


Thank you,


J Lynch: