Memory management unit for digital computer

Details Memory management unit for digital computer Memory management unit for digital computer

G - Physics

06

F

354/239

G06F 12/02 (2006.01) G06F 12/14 (2006.01)

Patent

CA 1197020

ABSTRACT OF THE DISCLOSURE: An improved memory management unit (MMU) for interfacing between a CPU and a main computer memory. The MMU's memory provides overlapping management capacity. This permits relocation data and limit data to be stored for a plurality of processes, and thus, allows several programs to be run without reprogramming the MMU. Special "access" bits are also stored in the MMU's memory which, by way of example, prevent the writing into program, accessing of unselected processes or user access to certain memory locations to prevent, for instance, the copying of an operating system.

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