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

How do we save a selected sub-image to a file in gimp, Use "Edit->Paste As-...

Use "Edit->Paste As->New Image" menu command or press Ctrl-Shift-V key combination, then save newly created image.The script-fu-selection-to image can also be used to cut a selecti

Describe the working of CRT in detail, Describe the Working of CRT The ...

Describe the Working of CRT The electron beam produces a tiny, bright visible spot when it strikes the phosphor-coated screen. A colour CRT monitor has three different coloured

Explain about threads model - programming model, Q. Explain about Threads M...

Q. Explain about Threads Model - programming model? In this model a single process can have many as well as concurrent execution paths. The main program is planned to run by na

Explain the potential role of information technology, Question 1: Descr...

Question 1: Describe the five maturity levels of KM that an organization faces when adopting the Frid's KM framework. Question 2: (a) Describe three major issues that

State in brief about the pseudo instruction, State in brief about the pseud...

State in brief about the pseudo instruction A pseudo instruction isn't a real instruction. CPU can't execute it. It often requires a complex architectural operation and if it w

Which things should microprocessor validate, Q. Which things should micropr...

Q. Which things should microprocessor validate? A microprocessor should validate: Powerful addressing modes More addressing capability More throughput Po

Develop a regular expression for integer and identifier, Develop a regular ...

Develop a regular expression for Integer and Identifier (i) A regular expression for integer is [+ | -] (d)+ (ii) A regular expression for identifier is l(l | d)*

Define process of instruction execution, Instruction execution is performed...

Instruction execution is performed in CPU registers. Although before we define process of instruction execution let's first give details on Registers (temporary storage location in

What are the various components in sequence diagrams, ? Actor: Actor shows ...

? Actor: Actor shows an external user / end user who interact with the system. ? Object: Object is shown by one of components of the system. ? Unit: A unit is a subsystem, o

Explain optimal page replacement algorithm, Optimal Page Replacement Algori...

Optimal Page Replacement Algorithm The optimal page replacement algorithm that as well known as OPT is an algorithm which works as follows: while a page needs to be swapped in,

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