Re: A86: What is a TSR! (was lurking programs)

To: assembly-86@lists.ticalc.org
Subject: Re: A86: What is a TSR! (was lurking programs)
From: Dan Eble <eble@cis.ohio-state.edu>
Date: Sat, 30 Aug 1997 11:59:18 -0400 (EDT)
In-Reply-To: <970830114008_1361003860@emout13.mail.aol.com>
Reply-To: assembly-86@lists.ticalc.org

On Sat, 30 Aug 1997 MTNBIKE560@aol.com wrote:

> what is a TSR?
> 

Wow... I feel old. :)

For those of you unfortunate enough never to have used DOS, a TSR is a DOS
program that (T)erminates and (S)tays (R)esident in memory.  DOS doesn't
multitask, but when a TSR is loaded into memory, it captures an interrupt
(such as is generated by the keyboard, mouse, or any piece of hardware or
software) and gives control back to DOS.  Typical examples of TSRs are
mouse drivers, CD-ROM drivers, and network card drivers.

Calling a calculator program a TSR borders on incorrectness, since the
programs are always resident in the memory.  If we make a distiction 
between storage memrory and execution memory, then the term could apply.

--------
Dan Eble (mailto:eble@cis.ohio-state.edu)
         (http://www.cis.ohio-state.edu/~eble)

References:

Re: A86: Re: lurking programs

From: MTNBIKE560@aol.com