Path: utzoo!attcan!uunet!peregrine!elroy.jpl.nasa.gov!sdd.hp.com!wuarchive!julius.cs.uiuc.edu!rpi!uupsi!sunic!liuida!isy!ingemar From: ingemar@isy.liu.se (Ingemar Ragnemalm) Newsgroups: comp.sys.mac.programmer Subject: Re: A use for protected mode after all Message-ID: Date: 5 Dec 90 09:27:19 GMT References: <2371.27539d74@waikato.ac.nz> <1990Nov28.000542.21632@verity.com> <1990Nov28.031713.14035@maverick.ksu.ksu.edu> <2382.2754d79e@waikato.ac.nz> <1990Nov29.025924.7662@maverick.ksu.ksu.edu> <4857@husc6.harvard.edu> Sender: news@isy.liu.se (Lord of the News) Organization: Dept of EE, University of Linkoping Lines: 30 siegel@endor.uucp (Rich Siegel) writes: >Memory protection on the Mac is a tricky problem, because the OS, Toolbox, >and application code are so tightly coupled, and applications often have >legitimate reasons to access OS space. That doesn't make it impossible, >though. I agree in principle with the need, but for all practical purposes, >I believe that software that doesn't crash in the first place is the best >way to go - whether it stomps on other parts of the system or not, a >crash interferes with the user's ability to get work done, and therefore >it is a good thing to avoid. Software that doesn't crash? Ever seen a totally bug-free program? I havn't. Ever seen MS Word bomb? I don't need protected mode that much when running unifinder, but under Multifinder, it is very much needed. Is it that hard to do? I really don't know much of this, but I'd imagine a flag on applications that tells if they allow protected mode. Is it possible to protect only against writing and not against reading? PS: Is there a "crashsaver" anywhere that works on Mac II's? Mine works like a dream on Plus and SE, but when I try to jump out of a bomb on a II, it hangs. -- Ingemar Ragnemalm Dept. of Electrical Engineering ...!uunet!mcvax!enea!rainier!ingemar .. University of Linkoping, Sweden ingemar@isy.liu.se