Explain the working of direct memory access controller, Electrical Engineering

Assignment Help:

Explain the various modes in which DMAC works.

Working of Direct memory access controller:

The modes of operation has demand mode, block mode, single mode and cascade mode. Demand mode transfers data till an external EOP is input or till the DREQ input becomes inactive. Particular mode releases the HOLD after all byte of data transferred. Block mode automatically transfers the no. of bytes specified by the county register for the channel. Cascade mode is used while more than one 8237 is present into a system.


Related Discussions:- Explain the working of direct memory access controller

Evaluate the damping ratio for the gain, A feedback control system with the...

A feedback control system with the configuration of Figure has the following parameters: K p = 0.5 V/rad, K a = 100 V/V, K m = 2.7 × 10 -4 N·m/V, J = 1.5 × 10 -5 kg·m 2 , and

Network theorems.., how to calculate voltage when 3 voltage sources are giv...

how to calculate voltage when 3 voltage sources are given?

Design a crossover circuit for loudspeaker, The aim of the research paper i...

The aim of the research paper is to design a crossover circuit for loudspeaker that will be used with a 2-way speaker. Circuit consists of the resistors, capacitors and operational

Find the current flow through resistor using norton theorem, Use Norton Th...

Use Norton Theorem, find the current flow through resistor R=10Ω.

Digital Signal Processing, Can you do a survey paper on Wavelet and Subband...

Can you do a survey paper on Wavelet and Subband Coding? I need 10 pages and I will provide the references.

Describe the methods of improving commutation., There are two practical way...

There are two practical ways of improving commutation i.e. of making current reversal in the short - circuited coil as sparkless as possible. These methods are known as (i) resista

What does the eu do, Execution Unit receives program instruction codes and ...

Execution Unit receives program instruction codes and data from BIU, implements these instructions and store the result in general registers.

Digital electronics, Design a recycling MOD 19 up counter using JK FFs. In ...

Design a recycling MOD 19 up counter using JK FFs. In your design, include the logic circuit diagram and the timing diagram output that counts from 000002 = 010 to 100112 = 1910. C

Emitter follwer, Ask questertion #Minimum 100 words accepted#

Ask questertion #Minimum 100 words accepted#

Calculation of aggregate technical and commercial loss, Calculation of Aggr...

Calculation of Aggregate Technical and Commercial Loss The concept of AT&C loss was introduced within 2001-02. The AT&C losses are presently in the range of 18% to 62% in seve

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