Compare memory mapped i/o with i/o mapped i/o, Computer Engineering

Assignment Help:

Compare memory mapped I/O with I/O mapped I/O.

Memory Mapped I/O Scheme: In this scheme there is only one address space. Address space is stated as all possible addresses that microprocessor can generate. Some addresses are allocated to memories and some addresses to I/O devices. An I/O device is also treated just like a memory location and one address is assigned to it. In this scheme all the data transfer instructions of microprocessor can be used for both memory and I/O device. This scheme is suitable for a small system.

In I/O mapped I/O scheme addresses assigned to memory locations can also be assigned to I/O devices. As the same address may be assigned to a memory location or an I/O device, microprocessor should issue a signal to distinguish whether the address on address bus is for a memory location or an I/O device.

 


Related Discussions:- Compare memory mapped i/o with i/o mapped i/o

Write a subroutine in c which toggles the cursor, Q . Write a subroutine in...

Q . Write a subroutine in C which toggles the cursor? Write a subroutine in C which toggles the cursor. It takes one argument which toggles the value between on (1) and off (0)

Define bootstrap loader, Define bootstrap loader? The ROM portion of ma...

Define bootstrap loader? The ROM portion of main memory is required for storing an initial program known as bootstrap loader. It is a program whose function is to start the com

Connector of conventional keyboard, 5-pin DIN connector: It is the conn...

5-pin DIN connector: It is the connector of conventional keyboard which have 5 pins (2 IN, 2 OUT and one ground pin) used for transfer and synchronization.

Compute the positive integer and square root, Question: Q1) Write a cod...

Question: Q1) Write a code that asks the user for a positive integer, computes the square root of that integer, and return the result to the user. The computational error needs

Explain about candidate check, The process which is underlined throughout t...

The process which is underlined throughout the check of base data is called as candidate check. When performing candidate check performance varies either towards the positive side

Communications and synchronization, Communications Parallel tasks class...

Communications Parallel tasks classically need to exchange data. There are many ways in which this can be accomplished, such as, through a network or shared memory bus. The act

What do you mean by manual assembly, Q. What do you mean by Manual Assembly...

Q. What do you mean by Manual Assembly? It was an old method which required the programmer to translate every opcode in its numerical machine language representation by search

Which language is a platform free language, Which language  is a platform ...

Which language  is a platform free language Java language

Build a tv remote control, Communication by devices, such as the HC11 proce...

Communication by devices, such as the HC11 processor, is a key and vital part of most systems that are used in military, commercial, and academic settings.  In fact, most of these

Explain excess-3 and gray code using four binary digitis, Give the details ...

Give the details of excess 3 codes and gray code using four binary digits. Ans: Table of excess 3 codes and gray code using four binary digits Binary

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd