Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!dali.cs.montana.edu!milton!ogicse!intelhf!ichips!inews!iWarp.intel.com!pdxgate!jove!caster
From: caster@jove.cs.pdx.edu (Brad J. Caster)
Newsgroups: comp.sys.ibm.pc.programmer
Subject: Re: INT 2F, subfunc 13h
Message-ID: <2743@pdxgate.UUCP>
Date: 27 May 91 02:44:39 GMT
References: <1991May26.064558.13108@umbc3.umbc.edu>
Sender: news@pdxgate.UUCP
Reply-To: caster@jove.UUCP (Brad J. Caster)
Distribution: usa
Organization: /etc/organization
Lines: 15

In article <1991May26.064558.13108@umbc3.umbc.edu> cs106132@umbc5.umbc.edu (cs106132) writes:
...
>   DS:DX points to current handler to set
>   AX = 13h
    ^^^^^^^^   AH = 13h  or AX = 13xxh
>   Int 2F
>   DS:DX now contains the original address
>   store away DS:DX
>   Int 2F again to set it back to what it was
...




Warning!  Not for the novice.