Miscellaneous

What is the size of logical address space?

What is the size of logical address space?

Logical Address = 24 bits. Logical Address space = 2 ^ 24 bytes.

Is logical address space can be larger than physical address space?

Logical Address space can be larger than physical address space. Explanation: The statement is true. Since, a part of the program needs to be in memory for the process of execution, the logical space can therefore be much larger than the physical address space.

How large is the logical address space of a machine that uses 32 bit logical addresses?

Each user-mode process has its own private virtual address space. For a 32-bit process, the virtual address space is usually the 2-gigabyte range 0x00000000 through 0x7FFFFFFF. For a 64-bit process on 64-bit Windows, virtual address space is the 128-terabyte range 0x000’00000000 through 0x7FFF’FFFFFFFF.

What is logical address space in memory management?

The term Logical Address Space is used for the set of all logical addresses generated by a program’s perspective. The hardware device called Memory-Management Unit is used for mapping logical address to its corresponding physical address. Physical Address identifies a physical location of required data in a memory.

What is the size of physical address space?

Explanation: Physical Address Space = 2P Bytes. Word Length is 2W bytes, which means each word is of size 2W bytes. Cache memory size = 2N Bytes and Tag Size = 2X Bytes.

What is difference between logical address space and physical address space?

The logical address is used like a reference, to access the physical address. The fundamental difference between logical and physical address is that logical address is generated by CPU during a program execution whereas, the physical address refers to a location in the memory unit.

What is the difference between logical address space and physical address space?

The basic difference between Logical and physical address is that Logical address is generated by CPU in perspective of a program. On the other hand, the physical address is a location that exists in the memory unit. The set of all logical addresses generated by CPU for a program is called Logical Address Space.

Why can the virtual address space be larger than the physical address space?

The virtual address space of each process can be smaller or larger than the total physical memory available on the computer. To maximize its flexibility in managing memory, the system can move pages of physical memory to and from a paging file on disk.

What is the size in bytes of a memory with an address space of 32 and an addressability of 32?

4G
A 2-bit address bus can address 22 or 4 locations (that is 00, 01, 10 and 11). A 20-bit address bus can address up to 220 addresses (1 MB). A 24-bit address bus can address up to 16 MB. A 32-bit address bus can address up to 4 GB….13.6 Memory addressing size.

Address bus size Addressable memory (bytes)
32 4G‡
64 16GG

What is the limit of the virtual address space size for a processor with a 32-bit word size?

4 gigabytes
A 32-bit word size limits the virtual address space to 4 gigabytes, that is, just over 4 x 10^9 bytes. Is my understanding correct that it’s the number of possible addresses, not the total memory size?

What is the size of logical address space if bits in logical address are 16?

logical address space contains 32 pages and to represent 32 pages we need 5 bits (2^5=32) and each page contains 2048 words therefore the offset or “d” parameter can be represented by 11 bits (2^11=2048). So total number of bits to represent logical address = 5+11=16 bits.

What is the differences between physical and logical address and why do we need logical addresses?