Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!rochester!kodak!ektools!isctsse!pajerek
From: pajerek@isctsse.UUCP (Don Pajerek)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Os/2, Dos and X-windows
Message-ID: <253@isctsse.UUCP>
Date: 23 Jun 89 13:46:10 GMT
References: <25112@shemp.CS.UCLA.EDU>
Sender: daemon@ektools (The Devil Himself)
Reply-To: pajerek@isctsse.UUCP (Donald Pajerek)
Organization: Eastman Kodak Telecommunication Services, Rochester, N.Y. 14650
Lines: 28

In article <25112@shemp.CS.UCLA.EDU> gblee@CS.UCLA.EDU () writes:
>Many of you requested summary of Os/2, Dos and X-window.
>Here is intermediate one. Enjoy it.
>
>>Also, i want to know in PS/2, is there any way to use Dos and Os/2 
>>at the same time, in other words, open one window for Dos, and
>>another window for os/2... Is it possible? 
>
>Os/2 comes with the capability of having a "DOS Compatibility Box" in
>which you can run a single dos session.  You can run multiple OS/2
>tasks in the background when you have the DOS session in the
>foreground, but MS-windows-like, it will suspend the DOS session to put
>an OS/2 task in the foreground.

No.  When the DOS Compatibility Box is brought to the foreground, all OS/2
programs are suspended.  This is because the DOS program must execute in
real mode, while OS/2 programs use protected mode.  This eliminates the
possibility of multitasking mixed DOS and OS/2 programs.

386 machines can multitask DOS applications by using the 'virtual 8086'
mode of the 386 processor.  However, you cannot run OS/2 programs in
this environment.

>-- 
>     john nelson
>

Don Pajerek