home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!mcsun!sun4nl!star.cs.vu.nl!estel@cs.vu.nl
- From: estel@cs.vu.nl (Stel E)
- Newsgroups: comp.os.msdos.programmer
- Subject: Can TSR slow down system too much?
- Message-ID: <15775@star.cs.vu.nl>
- Date: 17 Aug 92 12:52:52 GMT
- Sender: news@cs.vu.nl
- Organization: Fac. Wiskunde & Informatica, Vrije Universiteit, Amsterdam
- Lines: 21
-
-
- Hai programmers,
-
- I've made a simple Screen Saver. I'd like the program to work
- with both DOS and Windows programs. So I hooked it to the
- timer interrupt (0x1c). Every time this interrupt is generated
- (18.2 times a sec.) it checks the SHIFT status (scancode).
- If both SHIFT keys are pressed, the screen blanks, if some
- other key (SHIFT/ALT/CTRL) is pressed the screen unblankes.
-
- The program has to check some things every time it's called.
- Can this slow down my machine too much? Can my clock start
- to run too slow (clock = DOS clock)? It's not so easy to
- test (my machine is quite fast). I couldn't notice any
- difference, not even when blanking/unblanking very fast and
- frequent.
-
- I don't think it's a problem, but I wanna be sure.
-
-
- Thanks in advance, Erik Stel (estel@cs.vu.nl)
-