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How can one calculate the physical address from a given logical address?
To calculate the physical address from a logical address, you can use the base address and offset. Add the base address to the offset to get the physical address. This process is commonly used in computer systems to translate logical addresses to physical addresses for memory access.
Why you need memory physical address and memory logical address?
Physical Address refers to Storage location on Physical Memory wheres Logical Addressing is used by Memory Managing Programs to refers addresses from Physical Memory and Virtual Memory.
What is logical address space and physical address space?
Logical address is the address generated by the CPU (from the perspective of a program that is running) whereas physical address (or the real address) is the address seen by the memory unit and it allows the data bus to access a particular memory cell in the main memory. All the logical addresses need to be mapped in to physical addresses before they can be used by the MMU. Physical and logical addresses are same when using compile time and load time address binding but they differ when using execution time address binding.
What is the hexadecimal address range for upper memory?
group of consecutive memory that has had physical memory assigned to it
How do you calculate starting address in the memory map of a 4k byte memory is 2000Hspecify the last address?
If a 4k segment is stored at address 2000H, the last address will be 2FFFH.
How virtual address is translated into physical address?
MMU-memory management unit
In paged system Can the logical address space b larger than physical address space?
Yes. This is the fundamental premise of paged or virtual memory - that you can have more logical memory than physical memory.
Physical address and logical address?
A logical (or virtual) address is a reference to a memory location independent of the current assignment of data to memory; a translation must be made to a physical address before the memory access can be achieved. A relative address is the address expressed as a location relative to some known point, usually the beginning of the program. A physical address, or absolute address, is an actual location in main memory.
What kind of memory address does a CPU generate?
- An MMU (memory management unit) generates physical address. - A CPU (central processing unit) generates a logical address.
How can you calculate the physical memory of the next instruction executed by the microprocessor?
To calculate the physical memory address of the next instruction executed by a microprocessor, you typically use the program counter (PC), which holds the address of the next instruction to be fetched. The PC is incremented after each fetch, usually by the size of the instruction that was executed. In systems with paging or segmentation, you may also need to consider the current values of the segment registers or page tables to translate virtual addresses to physical addresses correctly. Thus, the physical address can be derived from the PC value, along with any necessary address translation mechanisms.
Which formula you will use to calculate The memory address of fifth element of an array?
a
What factors determine how much physical memory an 80286 can address?
An 80286 has a 24 bit address bus. As such, it can address 224, or 16,777,216, or 16 MB of memory.
