Dma controllers - computer architecture, Computer Engineering

Assignment Help:

DMA controllers in computer system:

  •   DMA Controller
  •   Part of the I/O device interface
  •   DMA Channels
  •   Performs functions that in general would be performed by the processor
  •   Bus signals that control transfer
  •   Provides memory address
  •   Keeps track of number of transfers
  •   Under control of the processor

INTERFACE CIRCUITS

o   Provides a storage buffer for at least one word of data.

o   Circuitry required connecting an I/O device to a computer bus

o   Contains address-decoding circuitry

o   Contains status flag that can be accessed by the processor.

o   Generates the appropriate timing signals required by the bus control scheme.

o   Performs format conversions

o   Ports

o  Parallel port

o  Serial port

Keyboard to processor connection

8_DMA controllers.png

 


Related Discussions:- Dma controllers - computer architecture

Define in detail about the architecture, Define in detail about the Archite...

Define in detail about the Architecture Architecture is the set of resources visible to machine language programmer: Registers, the memory, data representations, instructions

How semaphores implement mutual exclusion, How semaphores implement mutual ...

How semaphores implement mutual exclusion? Mutual-exclusion implementation along with semaphores: Assume that there are n-processes and they share a semaphore, mutex (stan

How web-based word processing works, How Web-Based Word Processing Works? ...

How Web-Based Word Processing Works? Web-based word processors are hosted in the cloud, not on the hard drive-as are the documents formed with these applications. And these web

State any three properties of the neutrons, Q. State any three properties o...

Q. State any three properties of the neutrons. (i) A Neutrons are the constituent particles of all nuclei except hydrogen. (ii) As they are neutral particles they aren't de

Handling a page in memory - computer architecture, Handling a Page: ...

Handling a Page: Typical page size today are 4 kb to 16 kb ,having tendency to use even larger page sized Organization that reduce the page fault rate are striking (comp

What is binary, Binary is an alternative number system which works very goo...

Binary is an alternative number system which works very good for computers. Humans have ten fingers; that's probably why we use ten digits (0, 1, 2, 3, 4, 5, 6, 7, 8, and 9) in our

What is tri-state logic, Three Logic Levels are used and they are High, Low...

Three Logic Levels are used and they are High, Low, High impedance state. The high and low are normal logic levels & high impedance state is electrical open circuit conditions. Tri

What is gui status, What is GUI status? How to create /Edit GUI status? ...

What is GUI status? How to create /Edit GUI status? A GUI status is a subset of the interface elements used for a certain screen. The status comprises those elements that are c

Define instruction code, Define Instruction Code. An Instruction code i...

Define Instruction Code. An Instruction code is a group of bits that instructs the computer to perform an exact operation. It is usually separated into parts, each having its o

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