Path: utzoo!attcan!uunet!aplcen!uakari.primate.wisc.edu!zaphod.mps.ohio-state.edu!mips!sjsca4!poffen
From: poffen@sj.ate.slb.com (Russ Poffenberger)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Why use MS-window ?
Message-ID: <1990Jun7.171026.21526@sj.ate.slb.com>
Date: 7 Jun 90 17:10:26 GMT
References: <10699@medusa.cs.purdue.edu> <46500092@uxa.cso.uiuc.edu> <3867@rtifs1.UUCP> <10343@batcomputer.tn.cornell.edu>
Reply-To: poffen@sj.ate.slb.com (Russ Poffenberger)
Organization: Schlumberger Technologies, San Jose, CA.
Lines: 33

In article <10343@batcomputer.tn.cornell.edu> pwong@tcgould.tn.cornell.edu (Patrick Wong) writes:
>In article <3867@rtifs1.UUCP> bcw@rti.rti.org (Bruce Wright) writes:
>>
>>In Windows for 8086/8088/80286 machines, Windows uses _non-pre-emptive_ 
>>multitasking.  This means that programs run until they relinquish the
>>CPU.  Windows can run (many) ordinary DOS programs in this mode, but
>>if they don't relinquish the CPU then other programs won't get any.
>>
>>						Bruce C. Wright
>
>By the way, you've got me interested !  So (pardon my ignorance) which
>version of Windows will work for a 8086/8088 compatibles ?  Is it the
>one called Windows 286, or is it some older and no-longer-available
>version ?
>

Windows 3.0 has three modes, real, standard, and 386 enhanced.

Real mode will run on any CPU type, however with limitations. It can sortof
multitask between windows applications (not DOS applications). You are limited
to 640K plus expanded memory.

Standard mode runs only on 286/386 CPU's. It can take advantage of up to 16Mb
of extended memory, and run windows 3.0 applications in extended memory.

386 enhanced mode is preferred because it utilizes the virtual memory mode of
the 386 CPU's. It can multitask between DOS applications.


Russ Poffenberger               DOMAIN: poffen@sj.ate.slb.com
Schlumberger Technologies       UUCP:   {uunet,decwrl,amdahl}!sjsca4!poffen
1601 Technology Drive		CIS:	72401,276
San Jose, Ca. 95110             (408)437-5254