Define the dma controller interface, Electrical Engineering

Assignment Help:

Define the DMA controller interface.

A DMA controller interfaces along with a few peripherals which may request DMA. The controller chooses the priority of simultaneous DMA requests communicates along with the peripheral and the CPU, and gives memory addresses for data transfer. DMA controller generally used with 8088 is the 8237 programmable device.

The 8237 is actually a special-purpose microprocessor. Normally this appears as part of the system controller chip-sets. The 8237 is a 4-channel device type. All channels are dedicated to an exact peripheral device and able of addressing 64 K bytes section of memory.

1416_8237 microprocessor.png

8237 microprocessor


Related Discussions:- Define the dma controller interface

Find the value of the induced emf, Q. A six-pole, double-layer dc armature ...

Q. A six-pole, double-layer dc armature winding in 28 slots has five turns per coil. If the field flux is 0.025 Wb per pole and the speed of the rotor is 1200 r/min, find the value

Digital control system, block diagram of digital control system and explain...

block diagram of digital control system and explain each block

Explain the operation of rc phase shift oscillator, Question 1 With the he...

Question 1 With the help of energy band diagram differentiate between Insulators, semiconductors and metals Question 2 Explain the operation of RC phase shift oscillator

Insulation resistance, how can we increase insulation resistance of sheet

how can we increase insulation resistance of sheet

Enhance the supply chain, Over 6,000 companies have established operations ...

Over 6,000 companies have established operations within Jebel Ali Free Zone, using it as a base to distribute their products to the GCC countries and beyond. These companies hav

Provide definition of signals, Provide Definition of Signals A continuo...

Provide Definition of Signals A continuous-time signal x(t) is a signal that is a function of real number t. For a discrete-time signal x[n], it is a method of discrete time in

DLD, draw alogic diagramto implement F=ABCDE using only 3 inputAND gates

draw alogic diagramto implement F=ABCDE using only 3 inputAND gates

Determine the mmf of the exciting coil, Q. For themagnetic circuit shown in...

Q. For themagnetic circuit shown in Figure, neglecting leakage and fringing, determine the mmf of the exciting coil required to produce a flux density of 1.6 T in the air gap. Them

What are the basic operations of a computer, What are the basic operations ...

What are the basic operations of a computer? The basic operations are READ and WRITE.

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