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

Random search - artificial intelligence, Random Search - artificial intelli...

Random Search - artificial intelligence: Some problems to be solved by a search agent are more creative in nature, for example, like in writing poetry. In this case, it is oft

Explain about double error detection bit, Q. Explain about Double Error Det...

Q. Explain about Double Error Detection bit? Let's presume now that two bit errors take place in data. Data received: So on -matching we conclude P3-D3 pair doesn't

Real time OS, what is the usuage of Real time Os

what is the usuage of Real time Os

How does tcp take of wrapping over of sequence numbers, How does TCP take o...

How does TCP take of wrapping over of sequence numbers? To handle out of instruct deliveries, transport protocols utilize sequencing. The sending side attaches a sequence numbe

What are the cycle based simulators, What are the Cycle based simulators ...

What are the Cycle based simulators Cycle based simulators are more like a high speed electric carving knife in comparison since they focus on a subset of the biggest problem:

Give example of bus and memory transfer, Give example of bus and memory tra...

Give example of bus and memory transfer For example, the read operation for transfer of a memory unit M from address register AR to another data register DR can be illustrated

Operating system., what is the minimum number of page faults for an optimal...

what is the minimum number of page faults for an optimal page replacement strategy?

Is it possible to pass data and include program explicitly, Is it possible ...

Is it possible to pass data to and from include programs explicitly? No.  If it is needed to pass data to and from modules it is needed to use subroutines or function modules.

Explain the processor-memory interconnection network (pmin), Processor-Memo...

Processor-Memory Interconnection Network (PMIN): It's a switch which attaches several processors to distinct memory modules. Connecting each processor to every memory module in

Colour technologies used in monitors and printer, Q. Which Colour technolog...

Q. Which Colour technologies used in Monitors and Printer? Monitor screens and Printers use different colour technologies.  The monitor uses RGB and the Printer CMYK. So, how d

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