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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 characteristic of the motherboard architecture determines the amount ofnmemory that CPU can address?
Different microprocessor can address different amounts of memory. The motherboard design should allow for maximising the physical memory to what the microprocessor can address
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
Determine the amount of memory that the ATMEGA 32 can address?
it has 32 kB of internal memory
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.
How virtual address is translated into physical address?
MMU-memory management unit
What characteristics of the motherboard architecture determine the amount of memory that a CPU can address?
RAM and the memory cache
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 physical address is generated?
A physical address is generated through a process called address translation, which typically involves the use of a memory management unit (MMU). When a program accesses a virtual address, the MMU translates this virtual address into a physical address by using a page table that maps virtual pages to physical frames in memory. This process allows the operating system to efficiently manage memory and provide isolation between processes. Ultimately, the physical address corresponds to a specific location in the computer's RAM where data is stored.
What is the physical address stored in a special memory location in the device called?
The physical address stored in a special memory location in a device is commonly referred to as the "base address" or "device address." This address serves as a reference point for accessing the device's memory-mapped I/O registers or for direct memory access (DMA) operations. It allows the CPU to communicate with the device efficiently by mapping specific memory locations to the device's functions.
