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From: cbema!las@cbnews.ATT.COM (cbema!las)
Newsgroups: comp.sys.ibm.pc
Subject: Re: UNIX runs DOS applications?
Message-ID: <11629@cbnews.ATT.COM>
Date: 21 Nov 89 18:10:34 GMT
References: <11330003@acf5.NYU.EDU>
Reply-To: cbema!las@cbnews.ATT.COM (Larry A. Shurr,20650,cb,9a110,6148605851)
Organization: AT&T Bell Laboratories, Columbus, OH (actually an AGS consultant)
Lines: 28

In article <11330003@acf5.NYU.EDU> mitsolid@acf5.NYU.EDU (Thanasis Mitsolides) writes:
}It is clear that When one moves to unix can take his DOS applications
}along. On a 386 machine at least which is what interests me anyway.

}	Is it also possible for these DOS virtual machines to use
}	virtual memory? (ie in 4Mb of RAM a DOS Process uses expanded
}	memory of 40Mb (under a compatibility window in unix))

Here at AT&T, I'm running a 6368 WGS with AT&T UNIX and SimulTask
(AT&T labeled VPI/X).  The SimulTask sessions are paged just like
any other process.  RAM is currently 4 Mbytes, so it isn't too 
difficult to push the system into paging.   An expanded memory 
driver is supplied with SimulTask which emulates up to 2Mbytes of 
expanded memory.  The 2 meg limit is probably a somewhat arbitrary 
choice; it could probably have been made larger, but...

}	Is that asking for too much? :-)

Maybe.  You should see what happens to the system when it gets into some
serious paging! (The small disk runs it little legs off and after you
press return, you simply leave and come back tomorrow).

regards, Larry
-- 
Signed: Larry A. Shurr (cbema!las@att.ATT.COM or att!cbema!las)
Clever signature, Wonderful wit, Outdo the others, Be a big hit! - Burma Shave
(With apologies to the real thing.  The above represents my views only.)
(Please note my mailing address.  Mail sent directly to cbnews doesn't make it.)