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Subjects>Electronics>Computers

How does microprocessor keep instraction in main memory?

Anonymous

∙ 12y ago

Updated: 12/11/2022

It doesn't.

Main memory is usually volatile (that is, it "forgets" when power is removed).

Most microprocessor systems keep a "bootloader" which is a special type of program located in memory that is available when power is applied. These days, that is usually Flash memory.

So, a typical microprocessor boot sequence is that the microprocessor places a known starting address on the Flash's address lines. The data that is returned is then executed. This data forms a basic program which copies from the Flash memory into main memory. Control then shifts to the main memory when the Flash has been completely read.

There may be additional aspects to the booting process, such as the second-stage boot loader which is responsible for loading the operating system, usually from a disk drive rather than Flash.

Wiki User

∙ 12y ago

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Related Questions

Where is the operating system stored in the computer for quick access by microprocessor?

in main memory

What is bus cycle in a microprocessor?

Bus cycle is a single transaction between the main memory and the CPU.

What are registers in assembly language?

Registers are memory locations on the microprocessor itself (not in main memory). In RISC architectures generally most operations (add, multiply, etc) must take there input from registers and write their output to a register. Since registers are located directly on the microprocessor, they represent the fastest form of memory in the computer, and also the type of memory available in the least quantity.

What is memory mapped in 8085?

memory interfacing in 8085 microprocessor refers to provide a intermediate mode of transferring or receiving data from registers to main memory

What are the major components of a microprocessor?

THE BASIC OMPONENT OF MICRO COMPUTER ARE 1. PROGRAM MEMORY 2. DATA MEMORY 3. MICROPROCESSOR 4. INPUT PORT 5. OUTPUT PORT 6. CLOCK GENRATOR THE BASIC OMPONENT OF MICRO COMPUTER ARE 1. PROGRAM MEMORY 2. DATA MEMORY 3. MICROPROCESSOR 4. INPUT PORT 5. OUTPUT PORT 6. CLOCK GENRATOR

Is cache memory is main or sec memory?

cache memory is neither main memory nor second memory. DDR's are Main memory and Disk is second memory.

What are the Uses of Cache a very high speed memory?

Cache is a high-speed memory device that is placed between a microprocessor and a system memory. A Microprocessor usually can process data at a much faster rate than what the system memory can provide. If this disparity isn't handled, we will end up with a microprocessor that's idling most of the time, because it has to wait on main system memory to provide the (or cosnume) data. With a cache, which could operate at a speed near the processor to shuttle data back and forth between processor and memory. Cache memory relies on a concept in computer science called locality of reference. This concept stipulates that when the processor accesses a piece of data, it is highly likely that it will access data that are also in the same locale in memory. A cache subsystem will fetch the requested data and those around to anticpate the next processor request.

What is microprocessor and its evolution?

A microprocessor is any computer with all ALU & control unit functions integrated into a single chip (or a very small number of chips). Microcontrollers are specialized microprocessors that also have memory and sometimes part of the I/O functions integrated into the chip too. Their main evolution has been to get higher performance and support for more memory. Even the simplest and least expensive microprocessor today has the ability to perform tasks far beyond the abilities of the fastest and most expensive supercomputers built in the 1970s.

What are the two main microprocessor manufacturing companies?

Intel and AMD

Is the main circuit board in a computer the microprocessor?

No... The main circuit board in a computer is referred to as the mother-board. The microprocessor is one chip on the mother-board, and is often referred to as the 'brains' of the computer.

What are advantages of downloading the main program into a microprocessor based system.Are there any disadvantages?

The advantages of downloading the main program into a microprocessor based system can be it can cause the system to run efficiently and the main program will be able to be easily accessed through the microprocessor system. Disadvantages can be due to errors they can happen due to system failure.

Special high-speed memory built into the micro processor for the micro processors?

virtual memory

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