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1 total messages Started by bill Fri, 13 Feb 1987 05:59

#137

Author: bill
Date: Fri, 13 Feb 1987 05:59

42 lines
1965 bytes

Path: tifsie!bill
From: bill@tifsie.UUCP (Bill Stoltz)
Newsgroups: mod.computers.68k
Subject: OS9 Questions (was Re: Minix/68k)
Summary: questions about OS9
Message-ID: <311@tifsie.UUCP>
Date: 13 Feb 87 05:58:02 GMT
Article-I.D.: tifsie.311
Posted: Thu Feb 12 23:58:02 1987
References: <8702081739.AA11278@gorgo.att.com>
Organization: TI Process Automation Center, Dallas
Lines: 29

Steve Blasingame gave a lot of information about OS9, but he left
me with a few unanswered questions.

If every process is position independent then is every process limited
to 64K bytes?  In order to be position independent you have to use
PC relative code.  PC relative, from what I have been able to find,
is +-32K bytes.  Obviously, programs can be greater than 64k but all
references must be within 32k.  How does OS9 handle this?

What does OS9 use to try to protect other processes or kernel memory
from the currently running process, without the use of an MMU?

Where can I get more information on OS9?  (General Overview and
some internal workings like we have discussed here)?

-----------------

Bill Stoltz
Texas Instruments
Process Automation Center
P.O. Box 655012, M/S 3635
Dallas, TX 75243

UUCP: 	{uiucdcs!convex!smu, {rice, sun!texsun}!ti-csl}!tifsie!bill
DECNET: TIFSIE::bill
Voice:	(214) 995-2786

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