building a PDP11 from the things you find at home

From: Iggy Drougge <optimus_at_canit.se>
Date: Sat Jul 28 21:24:49 2001

John Foust skrev:

>At 12:39 AM 7/27/01 -0400, Sean 'Captain Napalm' Conner wrote:
>>Well, AmigaDOS has processes, threads, semaphores, message ports,
>>messages, preemptive multitasking, multiple file systems and long file names
>>(on such filesystems that support that). It's not multi-user so it lacks
>>file permissions but it's a single user OS anyway. What else do you need?

>Well, we once wanted memory protection, but seeing that all
>the above was based heavily on the fact that any process could poke
>into any other memory, it was tough. :-)

AmigaOS is a zero-copy system, which makes it quite fast. Inter-process
communications are simply done by passing pointers instead of copying the
required data. Efficient but hardly secure. =)

--
En ligne avec Thor 2.6a.
"Computer games don't affect kids, I mean if Pac Man affected us as kids, we'd
all be running around in darkened rooms, munching pills and listening to
repetitive music."
   David McMinn
Received on Sat Jul 28 2001 - 21:24:49 BST

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