Re: Dos taking over int 5.

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#6373

From: Paul Rolland
Date: Wed, 18 Nov 1992 13:19

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In article <1992Nov13.075323.454@ifi.uio.no>, runefr@ifi.uio.no (Rune
Fr|ysa) wrote:
> 
> 
> Yesterday, I experienced the following problem:
> I have an interrupt (print screen key) routine conntected to int 5.
> After booting, the interupt address is: FF000:FF54 which is owned by
> BIOS, next using Norton SI to set screen mode to 80x50 lines, results
> in a vector to 02D5:37E3 which is Dos system area, and my interrupt
> routine which was installed before DOS takes over, no longer get 
> called at the press of the print screen key.
> 
> Anyone who has any idea of how to solve this problem? 
> (I prefer not to take control over int 09)

I think BIOS routines works only in 80x25 mode. If you want to have it
working in a graphic mode, you have to load the program GRAPHICS (if I
remember well), which will setup a new routine for graphic printing (on an
IBM compatible printer :( ). I *guess* it is the same problem for 80x50
text mode, but I don't know if the answer is the same. Why about trying ? 

Paul Rolland, rol@grasp1.univ-lyon1.fr
---

A bug can be changed to a feature by documenting it. Developpers know !

--------------------- DISCLAIMER -------------------

All the opinions I express in this posting are mine, but I'm
ready to share them with anybody interested :-)

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Path: arc1-ca.pugleaf.net!sparky!uunet!spool.mu.edu!agate!apple!apple!NewsWatcher!user
From: rol@grasp1.univ-lyon1.fr (Paul Rolland)
Newsgroups: comp.os.msdos.programmer
Subject: Re: Dos taking over int 5.
Message-ID: <rol-181192141737@90.222.1.80>
Date: 18 Nov 92 13:19:45 GMT
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