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amouse
July 13th, 2008, 01:24 PM
I scanned in the MicroSystems IBM PC/IX review of 1984

Here it is (http://maben.homeip.net/static/S100/IBM/PCIX/198410%20MicroSystems%20October%201984.pdf)

TroyW
July 13th, 2008, 05:33 PM
Very interesting, thanks for sharing!

mbbrutman
July 13th, 2008, 06:52 PM
That was a good read.

I find myself trying to figure out how they implemented any form of Unix on such a small machine. There is no memory protection or memory management unit to support mechanisms like paging, so the OS must be doing things like swapping out entire processes to disk, just like early versions of Windows did it. (The article points out that somebody with an assembler can easy whack the system.) Given the memory size, there is going to be a lot of swapping going on.