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

The alignment of a type ''c'' field in a report, The alignment of a type 'c...

The alignment of a type 'c' field in a report is? ? Left Aligned.

Explain the necessary conditions for deadlock to occur, Explain the necessa...

Explain the necessary conditions for deadlock to occur. Conditions for deadlock to arise are: i. Mutual exclusion: At least one resource must be held in a non-sharable mo

Find the average of two values, Q. Find the average of two values? Find...

Q. Find the average of two values? Find the average of two values which are stored in  ; Memory locations named FIRST and SECOND  ; And puts result in memory location AVG

Program size for different instruction set approaches, Q. Program size for ...

Q. Program size for different Instruction Set Approaches? Assumptions: Complex Instruction is: Add C, A, B having 16 bit addresses and 8 bit data operands All opera

Add multiple layout cells, Q. Add Multiple Layout Cells ? Next you will...

Q. Add Multiple Layout Cells ? Next you will add three layout cells below the logo cell you just created. Afterwards you will insert page's navigation buttons in these cells.

Explain the feasibility study, Explain the Feasibility Study This inclu...

Explain the Feasibility Study This includes writing a report to convince management of the merits of adopting proposed new system. Some features of the study comprise: T

What is indirect addressing mode explain, Q. What is Indirect Addressing Mo...

Q. What is Indirect Addressing Mode explain? Indirect Addressing Mode In the indirect addressing modes operands employ registers to point to locations in memory. So it is

Characters in vi editor, What is the command used to replace many character...

What is the command used to replace many characters in Vi Editor? Ans) For replace most of the character in vi editor press esc key and then press R for change many character.

Describe the roles of association, Describe the roles of association No...

Describe the roles of association Note that each association has roles. For instance, in Figure we can see that two classes, Student and University, have their predefined roles

Database management subsystem, (a) Explain, using suitable examples, the fu...

(a) Explain, using suitable examples, the functions of each of the sub system mentioned in the context of a large chain of supermarkets (i) Database Management Subsystem (ii)

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