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

Describe about address space and memory space, Q. Describe about Address Sp...

Q. Describe about Address Space and Memory Space? An address used by a programmer will be termed as a virtual address and set of such addresses the address space. An address in

Information distribution, INFORMATION DISTRIBUTION: The organization and m...

INFORMATION DISTRIBUTION: The organization and management of any institution, be it an isolated lab or a large site with many labs, requires that information is managed. Methods o

Explain folded network, Explain Folded network. Folded network: While...

Explain Folded network. Folded network: While all the inlets/outlets are connected to the subscriber lines, the logical connection shows as demonstrated in figure. When, the

Calculate a table of responses to all boolean inputs, 1.  The network shown...

1.  The network shown in figure 2 uses neurons with:             (a) Unipolar Binary;             (b) Bipolar Binary. Calculate a table of responses to all four possi

System programming, concurrentisation and vectorisation of program

concurrentisation and vectorisation of program

Various threats posed by server in client server environment, Explain vario...

Explain various threats posed through servers into a client server environment. Server Destroyed within an Accident: Power failures, Leaking pipes and equipment failures are no

What is literal, Meaning of Literal is:- Literal is string constant.

Meaning of Literal is:- Literal is string constant.

What is the significance timescale directive, What is the significance Time...

What is the significance Timescale directive? Defines time units and simulation precision (smallest increment). Syntax 'timescale TimeUnit / PrecisionUnit TimeUnit =

Exponential search, Exponential Search Another alternative to variable ...

Exponential Search Another alternative to variable size decrease-and-conquer search is known as exponential search. This algorithm begins searching at the beginning of the list

How many and gates are required to realize Y = CD+EF+G, How many AND gates ...

How many AND gates are required to realize Y = CD+EF+G ? Ans. Y = CD + EF + G for realize this two AND gates are needed (for CD and EF).

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