From: ypjofficial AT indiatimes DOT com (yogesh) Newsgroups: comp.os.msdos.4dos,comp.os.msdos.apps,comp.os.msdos.desqview,comp.os.msdos.djgpp,comp.os.msdos.mail-news Subject: regarding dos 640kb barrier Date: 30 Jul 2003 01:42:24 -0700 Organization: http://groups.google.com/ Lines: 16 Message-ID: NNTP-Posting-Host: 202.43.32.230 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Trace: posting.google.com 1059554545 7882 127.0.0.1 (30 Jul 2003 08:42:25 GMT) X-Complaints-To: groups-abuse AT google DOT com NNTP-Posting-Date: 30 Jul 2003 08:42:25 GMT To: djgpp AT delorie DOT com DJ-Gateway: from newsgroup comp.os.msdos.djgpp Reply-To: djgpp AT delorie DOT com hi all!! i have one question whose convincing answer i couldn' find in any book. everybody knows that dos has 640kb barrier..and hence this makes dos inefficient... my question is if dos is such a weak operating system..then why somebody like microsoft(creater of ms dos)didn't redesigned dos so that there could be no 640 kb memory limit...why they chose to develop memory managers like himem and extended memory manager etc.... why microsft waited for winnt to eradicate dos...??? why ms didn't do it before... hope i am clear in conveying my question... regds, yogesh