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What kind of memory addresses does a memory management unit generate?
- An MMU (memory management unit) generates physical address. - A CPU (central processing unit) generates a logical address.
Does data bus and address bus determine the address space of a CPU?
Yes, the data bus and address bus play crucial roles in determining the address space of a CPU. The address bus defines the range of memory addresses that the CPU can access, with its width (number of lines) directly influencing the maximum addressable memory. The data bus, on the other hand, determines how much data can be transferred simultaneously between the CPU and memory. Together, they define the overall capability of the CPU to communicate with memory and peripherals.
What characteristics of the motherboard architecture determine the amount of memory that a CPU can address?
RAM and the memory cache
How does CPU generate logical address?
Lets take the scenario of CPU MMU (memory management unit) Physical Memory.CPU generates the logical address as Page number + Page offset.Of course this address will point to some physical address.Page number is for the index in page table (for base address).The base address + offset is sent to MMU which is mapped to the corresponding physical page.
What is the difference between Harvard and Princeton computer architecture?
Harvard architecture : _________ ______ | code | | | | memory | | CPU | <-----> |_________| | | | | ----------- | data | | memory | ---------------- the CPU generated address is either point to code or data memory. Princeton arhitecture: data memory <--------> CPU <-------> code memory in this the CPU generated address will point to both the data and code. for this some internal operation are take place to point to either data or code. answered by prasad. mail prasad40613@gmail.com
What is the memory's addressibility?
HI I am Ahtarva,The addressibility is how many bits does that particular processor or micro-controller's architecture use to specify the address of a memory location in the memory. For example if someone say that addressibility is 8 bit then your memory address contains 8 bits and at maximum you have 2^8 different memory locations (or say memory addresses in your device). Here 2^8 is called Address space.
Which 3 computer devices generates heat?
The folowing 3 devices generate heat:hard disks, memory, and CPU's
What is the address space of 8086 CPU?
The 8086 CPU has a 20-bit address space, allowing it to address a total of 1 MB (2^20 bytes) of memory. This is achieved through a segmented memory model, where memory addresses are specified using a combination of segment and offset values. The segments can start from addresses 0x0000 to 0xFFFF, enabling the CPU to access different memory segments within the overall 1 MB range.
What is the function of the control unit in the CPU?
The control unit provides the timing and control signal to all operations of microcomputer. It control the flow of data between microprocessor and memory and peripherals.
When evaluating CPU memory do you check the cache memory?
The only memory on the CPU is cache memory and it is only dependent on the CPU type and generation you use.
How important is a CPU in terms of memory?
Although memory and CPUs are linked together very closely, a CPU is only important to memory when the memory is active. It is the CPU that writes to and reads from memory (or other devices that are under the control of the CPU). When the memory is idle, its only function is to retain data ready for it to be written over or read. In almost all cases. memory can do this without any intervention by a CPU. In volatile memory, a power supply needs to be provided to retain the data. Non-volatile memory on the other hand will stored data without power. An example of this kind of memory is a USB drive that can be unplugged from a USB port and retain all data without needing either a power supply or a CPU. Memory in fact is rather more important to the CPU than the other way round. The CPU operates as directed by a program that is stored in memory. Without memory, a CPU will not have a program to run so will not be able to fucntion.
Why is the wait for memory function completed step needed when reading from or writing to main memory?
When CPU needs to access a memory location for read or write, it places an address on the address bus. In case of Read, data is meant to be read into Memory Data Register (MDR) and in case of Write, the data (to be written to memory) is put in the MDR.After that CPU issues the Read or Write signal.However, CPU needs to know when the desired memory function (Read or Write) has been completed..This line back to the CPU saying that the operation is complete is sometimes called memory function complete (MFC).In the meanwhile, the instruction or step that is executed by the CPU is known as Wait for Memory Function Completed (WMFC)To summarize:To read (if you are a CPU): Put the desired memory address in the MAR.Assert the Read control line.Wait for the MFC line to be set to 1 by the main memory unit. (Or wait for the appropriate amount of time, if there's no MFC line with your particular main memory unit you are using (rare these days).)Get the data out of the MDR.To write (again, if you are a CPU): Put the desired memory address in the MAR and put the desired data in the MDR.Assert the Write control line.Wait for the MFC line to be set to 1 by the main memory unit
