Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!bradley From: bradley@cs.utexas.edu (Bradley L. Richards) Newsgroups: comp.lang.prolog Subject: Re: Prolog Memory Management in DOS Message-ID: <14837@cs.utexas.edu> Date: 19 Nov 90 00:41:28 GMT References: <90320.090657F0O@psuvm.psu.edu> <14722@cs.utexas.edu> Distribution: usa Organization: Dept of Computer Sciences, UTexas, Austin Lines: 21 In article dowding@ai.sri.com (John Dowding) writes: > >Is anyone going to come up with a good implementation that uses Windows >3.0 as the DOS extender, so I could run it on my grumpy old '286? Note that Windows is *not* a DOS extender in the sense you mean. Windows provides a multi-tasking environment, as does DESQView (which in my mind is preferable to Windows). But either environment (or just standard DOS for that matter) will run programs which were written using a DOS extender like PharLap. I'm not exactly sure how many applications have been extended (in this sense) for 286's--the great advantage for 386's is that the extenders kick the CPU into the native 386 mode with a flat memory architecture. Presumably similar advantages can be had by using the 286 in true 286 mode, but I don't know if this is done very often since getting out of 286 mode literally requires a hard CPU reset (one of the reasons the 286 was called "brain-dead" by many reviewers). But again, DOS extenders are a completely separate issue from environments like Windows.... Bradley