int 10 AH=12 BL=20 select alt PrtSc routine

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#5529

From: Arthur Rubin
Date: Fri, 29 Mar 1991 19:00

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Why is this called, and can I disable it without crashing my machine?

There are various filters I want to put into print screen, such as quoting
graphics characters (for my specific printer), but the above mentioned interrupt
remaps INT 05 for its own purposes.  There's a bug in the remapped code which
causes it not to work if the screen width is over 128 characters, so I would
want to take it over anyway.

My system:  
Everex Step 386/20
main BIOS (C)1987AMI
Video BIOS extension "IBM COMPATIBLE.*EGA BIOS V1.54
                      Copyright Everex Systems Inc."
Everex EGA card (obviously)
EverVision monitor
2 Mb memory
Dos 3.3

Thanks for any information you can give.
---------------------------------------------------------------------------------
a_rubin@dsg4.dse.beckman.com                .signature file under construction
Me? Represent Beckman Instruments? You've got to be kidding!!!!!!!!!!

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From: a_rubin@dn71.css.beckman.com (Arthur Rubin)
Newsgroups: comp.os.msdos.programmer
Subject: int 10 AH=12 BL=20 select alt PrtSc routine
Keywords: interrupt print screen bios
Message-ID: <a_rubin.670273228@dn71>
Date: 29 Mar 91 19:00:28 GMT
Lines: 22
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