Limit Register

A MEMORY ABSTRACTION: ADDRESS SPACES
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A MEMORY ABSTRACTION: ADDRESS SPACES

On the whole, exposing physical memory to processes has many major drawbacks. First, if user programs can address every byte of memory, they can easily trash the operating system, intentionally or by accident, bringing the system to a grinding halt (unless there is

VIRTUAL MEMORY
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VIRTUAL MEMORY

As base and limit registers can be used to create the abstraction of address spaces, there is another problem that has to be solved: managing bloatware. While memory sizes are increasing rapidly, software sizes are increasing much faster. In the 1980s, many universities

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