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

Briefly explain about laplace transform, Q. Briefly explain about Laplace t...

Q. Briefly explain about Laplace transform? Many commonly encountered excitations can be represented by exponential functions. The differential equations describing the network

What is synchronous data transfer, What is synchronous data transfer? I...

What is synchronous data transfer? It is a data method which is used when the I/O device and the microprocessor match in speed. To transfer a data to or from the device, the us

Microprocessor, Memory map of tpa in a personal computer and explain such o...

Memory map of tpa in a personal computer and explain such of the areas in brief

Downsampling in dsp, #ques1. (MATLAB) Generate 100 samples of the signal ...

#ques1. (MATLAB) Generate 100 samples of the signal  = sin (0.125). We want to decimate this signal using D = 2. • Design a 25-order lowpass filter using the Parks-McClella

Compute the capacitance per unit length, Write a program implementing the c...

Write a program implementing the conjugate gradient method (un-preconditioned). Solve the matrix equation corresponding to a finite difference node-spacing, h = 0.02m in x and y di

Assignment, Hi, I got assignment to design a power electronic system Design...

Hi, I got assignment to design a power electronic system Design the circuit and select the appropriate components for that circuit to fulfil the requirements of the device. Regards

Thevenin equivalent circuit, The circuit below will be most efficiently ana...

The circuit below will be most efficiently analyzed by obtaining the Thevenin equivalent circuit for the circuit to the left of the points (a-b) on the schematic. The capacitor is

Obtain an expression for b, Q. Consider an in?nitely long, straight wire (i...

Q. Consider an in?nitely long, straight wire (in free space) situated along the z-axis and carrying current of I A in the positive z-direction. Obtain an expression for ¯ B everywh

Give a brief description of differentiating circuits, Q. Give a brief descr...

Q. Give a brief description of differentiating circuits ?                Differentiation is a measure of the rate of change. A differentiating circuit produces an output voltag

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