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Subject: Re: OS compare (Unix/clone)
     
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Date: Thu, 30 Jul 1992 22:30:35 GMT
From: Bill Pechter <pechter@OCPT.CCUR.COM>
Subject: Re: OS compare (Unix/clone)
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In article <1992Jul29.172406.29587@klaava.Helsinki.FI>
 torvalds@klaava.Helsinki.FI (Linus Benedict Torvalds) writes:
>
>Having several different code/date-segments doesn't lend itself very
>well to high-level languages (it doesn't even work too well in assembly,
>but there the programmer often knows what he/she is doing).  Thus
>coherent 3.2 and minix don't even try: they keep to one segment, and
>limit all data to 64kB.  You can do a lot in 64kB, but I'd rather miss
>the experience.
>
     
I hate to say it - but back in the old PDP11 days they had overlays.
And learned to like them.
     
And we walked 50 miles to school, uphill, and we didn't have shoes then...
8-)
     
There is some satisfaction in shoehorning the most functionality in to
the smallest space.  The amazing fact that a PDP11 could multitask
with the same 64k of memory that ran CP/M was amazing to me.
     
I grew up with PDP11's and love the fact that RT11 can run foreground
and background tasks (up to 15 background tasks) in a machine with only
64kb of real memory is a fact that some people that haven't had to live
with those restrictions don't understand.
     
Unfortunately, you can't run X in that space, or NFS... Perhaps TCP/IP
though...
     
Bill
     
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        Bill Pechter, N2RDI           | The postman always pings twice.
        Concurrent Computer Corp.     | pechter@ocpt.ccur.com
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