posted by Eugenia Loli on Tue 23rd Mar 2004 03:09 UTC
The (never-was) DOS 4 was a preemptive real-mode multitasking operating system for the 8086 family of processors. It had a boatload of cool features, including movable and discardable code segments, movable data segments (the Windows memory manager was a version of the DOS 4 memory manager). It had the ability to switch screens dynamically – it would capture the foreground screen contents, save it away and switch to a new window.



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