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

Give illustration of and and or gate - microprocessor, Give Illustration of...

Give Illustration of AND and OR Gate - Microprocessor? Illustration: The image below demonstrate the 4 possible inputs into a 2-input AND gate and all the corresponding outputs

Assumption of capital asset pricing models, Q. Assumption of capital asset ...

Q. Assumption of capital asset pricing models? 1) Investor; s objective is to maximize the utility of terminal wealth: investor aims at maximizing the utility of hi9s wealth r

Corrosion, I want to know whether the circuits for both methods(linear pola...

I want to know whether the circuits for both methods(linear polarization resistance and electrochemical impedance spectroscopy) are same or not?

The resistance of a 7 m length of the similar cable, The resistance of a 2 ...

The resistance of a 2 m length of cable is 2.5?. Verify (a) the resistance of a 7 m length of the similar cable and (b) the length of the same wire when the resistance is 6.2

Operation - unijunction transistor, Operation - unijunction transistor: ...

Operation - unijunction transistor: Operation : Imagine that the emitter supply voltage is turned biased and a small emitter reverse current flows. Then the intrinsic stand

Node voltage method, (a) Carry out a topological analysis for the circuit s...

(a) Carry out a topological analysis for the circuit shown in Figure 1.     (i) Construct a graph for the circuit  (ii) State the different trees you can choose.    (b) Us

Compute the maximum internal torque, For the motor speci?ed in figure,  com...

For the motor speci?ed in figure,  compute the following: (a) The load component I' 2 of the stator current, the internal torque T, and the internal power P m for a slip of 0.

Find the frequency at which the forced response is zero, Q. The response y(...

Q. The response y(t) of a linear system to a unit-step excitation is y(t) = (4 - 10e -t + 8e -2t )u(t). (a) Find the system function. (b) Find the frequency at which the fo

Compute force vector, Q. Consider a current element I 1 d ¯l 1 = 10 dz ¯a...

Q. Consider a current element I 1 d ¯l 1 = 10 dz ¯az kA located at (0,0,1) and another I 2 d ¯ l 2 = 5dx ¯ax kA located at (0,1,0). Compute d ¯F 21 and d ¯F 12 experienced by

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