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

How 8255 programmable peripheral interface can operate, What are the differ...

What are the different modes in which 8255 Programmable Peripheral Interface (PPI) can operate? Twenty Four I/O lines in 38-bit port groups - A, B and C A and B can be

Programming, ELEC 132 COURSEWORK – ADC This work will be assessed based...

ELEC 132 COURSEWORK – ADC This work will be assessed based on program demonstration (during lab sessions) and design. You will also have to submit your c-source codes as word o

Dsp, what is circular convolution

what is circular convolution

Materials that can store electrical energy, Q . Materials that can store ...

Q . Materials that can store electrical energy are called (A) magnetic materials. (B) semi conductors. (C) dielectric materials. (D) super conductors. Ans: C

Fet parameters, FET Parameters A basic, low-frequency hybrid-pi model ...

FET Parameters A basic, low-frequency hybrid-pi model for the MOSFET is displayed in figure. The several parameters are as follows. is the transconductance in siemens

Sketch one full period of the am wave, Q. Let a(t) = [1 + m A x(t)] and x(t...

Q. Let a(t) = [1 + m A x(t)] and x(t) = cos 2πf m t, f m c , and x c (t) = A(t) cos 2πfct . (a) With m A =1, sketch one full period of the AM wave and draw the envelope by co

Hybrid meters, Hybrid Meters These meters have electronic measurement ...

Hybrid Meters These meters have electronic measurement circuits but show is by impulse counters/stepper motors. Accuracy is classically class 1.0 or 2.0 and commonly these met

Applied mechanics, State whether Lamis theorem is applicable for more than ...

State whether Lamis theorem is applicable for more than three coplanar concurrent forces?

Discuss some features of pentium series of microprocessors, Discuss some fe...

Discuss some features of Pentium series of microprocessors. The Pentium is a CISC microprocessor, 32-bit superscalar.  The term superscalar is utilized for the processor that

Write short notes on the stability factor of biasing circuit, Q. Write shor...

Q. Write short notes on the Stability Factor of Biasing circuits. The degree of success achieved in stabilizing Ic in the face of variations in Ico is expressed in terms of sta

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