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

When do we need to use cgi, There are innumerable caveats to this answer, b...

There are innumerable caveats to this answer, but basically any Webpage containing a form will need a CGI script or program to process the form inputs.

What is system-software, What is System-software? System-software is co...

What is System-software? System-software is collection of system programs which perform a variety of functions, name are: file editing, IO management, recourse accounting and s

Define various classes of interrupts, Q. Define Various classes of Interrup...

Q. Define Various classes of Interrupts? Figure below gives list of some common interrupts and events which causes occurrence of those interrupts. Figure: Various clas

Input device used in computer system, Input device used in computer system:...

Input device used in computer system: An input device is typically a mouse or keyboard, the input device is the conduit through which data and instructions enter a computer. A

Write a perl script, Write a PERL script which takes a file named input.txt...

Write a PERL script which takes a file named input.txt as an input and processes it. The input file has the following format: firstname lastname: pass/fail score%. A sample input f

Explain bootp (boot strap protocol), Explain BOOTP (Boot Strap Protocol). ...

Explain BOOTP (Boot Strap Protocol). TCP or IP designer observed that several of the configuration steps could be combined in a single step if a server was capable to supply mo

What is analysis iteration, Analysis Iteration   To understand any prob...

Analysis Iteration   To understand any problem completely you have to repeat task which implies that analysis requires repetition. First, just get overview of problem, make a r

Input output techniques - computer architecture, Input Output Techniques: ...

Input Output Techniques: o   Interrupt driven o   Direct Memory Access (DMA) o   Programmed Programmed I/O   CPU has control over I/O directly   Read/write

Prove boolean identities using boolean algebra, Prove the following Boolean...

Prove the following Boolean identities using the laws of Boolean algebra: ABC + AB ‾C + ABC ‾ = A(B + C) Ans. ABC+AB'C+ABC'=A(B + C) LHS AC(B+B')+AB(C+C') OR  AC+AB OR  A(B

Discuss the advantages of firewalls, Discuss the advantages of Firewalls ...

Discuss the advantages of Firewalls Firewalls also offer additional protection to local users who like to browse or surf out from the Intranet to the Internet, by acting as pro

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