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Article #2851TSR Install: Int 27h or Int 21h,Fcn 31h ?
From: Bob Davis
Date: Tue, 30 Oct 1990 14:09
Date: Tue, 30 Oct 1990 14:09
22 lines
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1617 bytes
Stuff I read says that Int 27h for installing a TSR should be considered obsolete and should not be used. Says use DOS Int 21h, Fcn 31h instead. Yet every TSR I look at uses Int 27h to go resident. For me, Int 27 works fine. With DOS 3.3, Int 21,Fcn 31 does not work. Kokkonen's Mark/Release mapmem command shows the TSR resident after the Int 21, but the specified interrupt is not shown as hooked by the TSR. And the TSR is not functional. What gives? My BIOS should not matter, should it? I have a BIOS dated sometime in 1985: November, I think. Thanks. ______________________________________________________________________________ Bob Davis, UofALA'66 \\ INTERNET : sonny@trantor.harris-atd.com | _ _ | Harris Corporation, ESS \\ UUCP : ...!uunet!x102a!trantor!sonny |_| |_| | | Advanced Technology Dept.\\ AETHER : K4VNO |==============|_/\/\/\|_| PO Box 37, MS 3A/1912 \\ VOICE : (407) 727-5886 | I SPEAK ONLY | |_| |_| | Melbourne, FL 32902 \\ FAX : (407) 729-2537 | FOR MYSELF. |_________|
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!timbuk!cs.umn.edu!uc!noc.MR.NET!msi.umn.edu!umeecs!umich!samsung!sol.ctr.columbia.edu!trantor.harris-atd.com!charybdis!sonny From: sonny@charybdis.harris-atd.com (Bob Davis) Newsgroups: comp.os.msdos.programmer Subject: TSR Install: Int 27h or Int 21h,Fcn 31h ? Message-ID: <4684@trantor.harris-atd.com> Date: 30 Oct 90 14:09:12 GMT Sender: news@trantor.harris-atd.com Reply-To: sonny@trantor.harris-atd.com (Bob Davis) Distribution: na Organization: Advanced Technology Dept., Harris ESS, Melbourne, FL Lines: 22