Subject:
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mmu
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Tue, 11 Aug 1998 08:35:49 GMT
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Original-From:
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Richard meester <RICHARD.MEESTER@CHESS.nospamNL>
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Viewed:
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1869 times
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Hello all,
i'm trying to write a small OS, but am confused about something.
I don't want to give access to all memory locations for the user, only
for the supervisor.
Since the 68hc11 doens't have these modes i have to think of something
else. A sollution is a external mmu, but this maybe some overkill.
Does anyone have some suggestions, or is it simply impossible to do.
Regards
Richard Meester
Software Engineer
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Message has 1 Reply:
 | | Re: mmu
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| It's not impossible. The easiest way is to use the same technique as Java (or IC) and write an embedded interpreter that executes code for a "psuedo" machine. The resulting machine can have arbitrarily strict access restrictions between tasks. You (...) (26 years ago, 11-Aug-98, to lugnet.robotics.handyboard)
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