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Article #4505Does default DTA in PSP automatically track a PSP switch?
From: Bob Davis
Date: Sun, 03 Feb 1991 14:35
Date: Sun, 03 Feb 1991 14:35
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1417 bytes
In an assembly language TSR, I switch from the interrupted foreground program's Program Segment Prefix (PSP) to the PSP of the TSR by calling DOS function 50h. Is the default Disk Transfer Area (DTA) *automatically* switched by DOS to be in the new PSP of the TSR, OR do I have to explicitly set the DTA address to offset 80h of the TSR's PSP by calling DOS function 1Ah? Thanks. _____________________________________________________________________________ Bob Davis, UofALA alum \\ 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) 729-3363 | FOR MYSELF. |_________|
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arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!soleil!mlb.semi.harris.com!trantor.harris-atd.com!charybdis!sonnyShow Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!soleil!mlb.semi.harris.com!trantor.harris-atd.com!charybdis!sonny From: sonny@charybdis.harris-atd.com (Bob Davis) Newsgroups: comp.os.msdos.programmer,alt.msdos.programmer Subject: Does default DTA in PSP automatically track a PSP switch? Message-ID: <5408@trantor.harris-atd.com> Date: 3 Feb 91 14:35:12 GMT Sender: news@trantor.harris-atd.com Reply-To: sonny@trantor.harris-atd.com (Bob Davis) Organization: Advanced Technology Dept., Harris ESS, Melbourne, FL Lines: 18