Article View: comp.os.msdos.programmer
Article #1228Re: Why ms-dos is non reentrant
From: Ross Ridge
Date: Wed, 02 Sep 1992 06:53
Date: Wed, 02 Sep 1992 06:53
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kennu@mits.mdata.fi (Kenneth Falck) writes: >So, the question remains, why don't the Microsoft programmers bang >their brains together and rewrite MSDOS to be fully re-entrant and >all the routines to use dynamic memory allocation instead of static? Well the reasons why this wasn't done for MS-DOS 5 and earlier releases is fairly straight forward: a) MS-DOS is a single-user, single-tasking operating system b) MS-DOS is big enough as it is For MS-DOS 6, if it ever comes about, I could see a complete rewrite of MS-DOS in C, supporting full re-entrency and other wonderful stuff. It of course would only run on a '286 or better, and require a couple of megabytes of memory. Not suprisingly it would look at a lot like OS/2 (once known internally at MS as DOS 5). Ross Ridge -- Ross Ridge - The Great HTMU l/ // [OO][oo] ross@zooid.guild.org /()\/()/ uunet.ca!zooid!ross db //
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Path: arc1-ca.pugleaf.net!sparky!uunet!utcsri!geac!alias!imax!beltrix!zooid!ross From: Ross Ridge <ross@zooid.guild.org> Newsgroups: comp.os.msdos.programmer,comp.os.msdos.misc Subject: Re: Why ms-dos is non reentrant Message-ID: <1992Sep2.065315.19027@zooid.guild.org> Date: Wed, 2 Sep 1992 06:53:15 GMT References: <92245.122042A10742@TRMETU.BITNET> <bws.35@ccs.carleton.ca> <1992Sep1.160133.19060@mits.mdata.fi> Organization: ZOOiD BBS Lines: 24