Path: utzoo!yunexus!ists!stpl!bbm!darcy
From: darcy@bbm.UUCP (D'Arcy Cain)
Newsgroups: comp.os.minix
Subject: Re: Minix Virtual Memory
Message-ID: <808@bbm.UUCP>
Date: 7 Nov 89 20:03:59 GMT
Article-I.D.: bbm.808
References: <12@caslon.cs.arizona.edu>
Reply-To: darcy@cain.UUCP (D'Arcy J.M. Cain)
Organization: BBM Bureau of Measurement, Toronto
Lines: 16

In article <12@caslon.cs.arizona.edu> roussos@caslon.arizona.edu writes:
>Has anyone tried to write a device driver to support an EMS board under
>Minix for the purpose of Virtual Memory ?  It does have the distinct
>advantage that it can work even on an 8086 or 8088. ...
> ... Face it - EMS is essentially virtual memory for
>DOS.  I think that this might be a decent addition to Minix.
>
Don't forget that virtual memory looks like native memory to programs
that are running on the processor.  The 8088 and 8086 don't generate
an interupt when a process gets to the end of allocated memory so Minix
would never know that it was time to swap some memory.  As I
see it there  only one thing that Minix could do with EMS and that is
to create a larger ram disk allowing more programs to be "insta-loaded".

D'Arcy J.M. Cain
(darcy@{bbm,cain})