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What is meant by addressable memory capacity?
What is meant by directly addressable memory capacity?

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"What is meant by addressable memory capacity? "
In a 32-bit computer, the memory addresses are 32 bits long and stored as binary (base 2) numbers. There are approximately 4 billion possible different 32-bit binary numbers (2^32=4,294,967,296). Because of this, there is a 4GB limit for addressable memory in a 32-bit computer.

A program instruction on an Intel 386 or later CPU can address up to 4GB of memory, using its full 32 bits. Each process is assigned an address space of 4GB of ...

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The expert determines what is meant by addressable memory capacity. The direct addressable memory capacity is given.

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Numerical: Direct Mapped Cache and Byte Addressable Memory

Given, a byte addressable main memory of 2^16 bytes and block size of 8 bytes, using direct mapped cache consisting of 32 lines.

a. How many total memory bytes can be stored in the cache?
b. How is a 16 bit memory address divided into tag, line number and byte number?
c. Into what line would byte with the following address be stored?
0001 0001 0001 1011.

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