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

Explain definition of fibonacci, Explain definition of fibonacci Where ...

Explain definition of fibonacci Where an input value gives a trivial result, it is returned directly, otherwise the function calls itself, passing a changed version of the inpu

Why cyclomatic complexity is important, Why cyclomatic complexity is import...

Why cyclomatic complexity is important? Cyclomatic complexity is computed using a graph that verifies the control flow of the program. The nodes of the graph correspond to the

The max number of calling modes stacked at one time is, The max number of ...

The max number of calling modes stacked at one time is? NINE

Introduction to information distribution, INTRODUCTION : Like any other of...

INTRODUCTION : Like any other office we need equipment to provide for information distribution in the laboratory office also. For information distribution we require multiple copi

Draw logic circuit for the simplified function, Minimize the logic function...

Minimize the logic function Y(A, B, C, D) = ∑m(0,1,2,3,5,7,8,9,11,14). Use  Karnaugh map. Draw logic circuit for the simplified function. Ans: In following figure (a) shows the

What is the necessity of an interface, What is the necessity of an interfac...

What is the necessity of an interface?  Any device that has to be linked to a CPU requires an interface. This takes care of the mismatch in speed, data and electrical character

Pythagorean theorem, if the 6 is a and the b is 3 what is the c ?

if the 6 is a and the b is 3 what is the c ?

What are different control function categories, What are different control ...

What are different control function categories. Explain. In several switching systems, the control subsystem may be an integral part of the switching network itself. This syst

Push and pop, Suupose a stack-oriented processor that haves the stack opera...

Suupose a stack-oriented processor that haves the stack operations PUSH and POP.  Arithmetic operations automatically involve the top one or two stack elements. Starting with an

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