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

Clapp oscillator, having looked at the circuit, i first wanted to start my ...

having looked at the circuit, i first wanted to start my frequency from 0 and plot for 10000 to 20000. so in matlab i used f = 0:10000:20000; but the equation for frequency is f= 1

Calculate the minimum sampling frequency, Three sine waves along with frequ...

Three sine waves along with frequencies 100Hz, 200Hz and 350Hz and with amplitudes of 1V, 2V and 1.5V correspondingly, are added together to make a single waveform. What is the min

Distinguish between paramagnetic and diamagnetic materials, Distinguish bet...

Distinguish between paramagnetic and diamagnetic materials, mentioning at least one example of each. Paramagnetic Materials: The atoms of these materials have permanent magne

Define explicit - implicit and parametric representations, Give an industri...

Give an industrial look at modern CAM/CAD. Define explicit, implicit and parametric representations. What are the basic advantages of parametric representations over the impli

DSP-chebyshev, Consider Chebyshev Type I versus Chebyshev Type II (also cal...

Consider Chebyshev Type I versus Chebyshev Type II (also called inverse Chebyshev) Ölters. Which one should be used based on the following criteria? (If there is no difference betw

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

block diagram of digital control system and explain each block

Combinational logic circuit , Design a combinational logic circuit to conve...

Design a combinational logic circuit to convert XS3BCD code in to the  standard 8421 BCD code.

Operation performed by instruction out 47 h, Q. Illustrate the operation p...

Q. Illustrate the operation performed by instruction OUT 47 h, AL. Ans:  It transfers contents of AL to I/O port 47h. Notice that I/O port number appears as 0047h on the 16 b

Explain soft ferrites and their applications, Explain Soft ferrites and the...

Explain Soft ferrites and their applications. Soft ferrites and their applications: Such are non- metallic compounds having ferric oxide and one or two bivalent metal oxides as

Explain memory mapped i/o scheme, Explain Memory Mapped I/O Scheme. Me...

Explain Memory Mapped I/O Scheme. Memory Mapped I/O Scheme: In such scheme there is only one address space. These address space is defined as all possible addresses which m

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