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How physical address is generated?

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∙ 8y ago

Updated: 10/16/2024

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Q: How physical address is generated?

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Related Questions

Difference between effective address and physical address?

The effective address is the address generated by the program, after all transformations, such as index registers, offsets, addressing mode, etc. have been made. The physical address is the address generated by the hardware, after performing whatever lookups through the page table, etc. have been made. The effective address, or virtual address, is the concern of the program. The physical address, or real address, is the concern of the operating system.

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 difference between virtual logical and physical address spaces?

The concept of a logical address space is simply involved the process of mapping the Logical addresses to their Physical Addresses . Logical addresses are generated by the CPU; also referred to as virtual addresses.while Physical Address is the actual address of the data stored on the physical device and mapped by MMU.

What does physical address mean?

The physical address is the final address that is presented to the bus, at the pins of the microprocessor chip, to form the address of the desired item in memory.In the 8085, physical and effective addresses are one and the same.In the 8086/8088, the physical address is the effective address plus 16 times one of the segment registers.In higher level processors, such as the 80386 and beyond, the physical address is formed by lookup of the effective address in a page table to convert from virtual/effective address to physical, or linear, address.The effective/virtual address is the address generated by the instruction and the programmer, without regard to any underlying addressing scheme. This is the address used when considering the "programming model", in "user mode".

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.

Explain the concept of segement memory if the 8086 excution unit calculates an effective address of 14A3H and DS contains 7000H what physical address will the BIU produce?

Segmented memory in the 8086/8088 means that the effective address is added to 16 times the segment address. In the question, an effective address of 14A3H with DS of 7000H, means the physical address is 714A3H. However, the BIU in the 8086 only addresses words, not bytes, so the address generated is 714A2H. If the operation required more than one byte of data, subsequent even addresses of 714A4H, 714A6H, etc. would be generated.

What is meant by effective address in microprocessor?

Effective address is the final address generated by offsetting and indexing which is sent to the virtual translation logic. It is the address of the operand in the virtual address space of the process, but not necessarily the address of the operand in the physical address space of the computer. In the 8085, efffective/virtual address is the same as physical address, because there is no virtual addressing logic in the 8085. In the 8086/8088, effective/virtual address is the same as physical address, but only in real mode. For example, in the 8086/8088, if the EBX register contains 1000000H, then the instruction MOV EAX,[EBX+1234H] has an effective address of 10001234H.

What is another name for the physical address assigned to each adapter?

mac address, physical .address address book ,physical change

Is physical address the home address?

Yes, a physical address would the the same as a person's address of their home. An example of a non-physical address would be a PO Box address.

Where physical address stored in computer network?

There is no physical address.

Can physical address and virtual address be same?

your question is wrong. it should be "can physical address and logical address be same" answer is no because logical address is the combination of page number and offset whereas physical address is the combination of physical page[frame] and offset

What is present physical address?

A physical address is where you live, or in the case of a business, where the store itself is located. The reason they specify is that sometimes the mailing address is different from the physical address. (a post office box for example)

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