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

Write a brief note on mmx technology, Write a brief note on MMX technology....

Write a brief note on MMX technology. MMX (Multimedia extensions) technology adds 57 new types of instructions to the Pentium - 4 microprocessors instruction set. The MMX tech

Illustrate hexadecimal number system, Q. Illustrate Hexadecimal Number Syst...

Q. Illustrate Hexadecimal Number System? A big difficulty with the binary system is verbosity. To symbolize the value 202 requires eight binary digits. The decimal version n

DC machine, a dc generator has 300 turns in each field coil. the flux per p...

a dc generator has 300 turns in each field coil. the flux per pol is 0.1 wb. find the average value of EMF inducet in field winding in the flux decays to zero in 0.3 second?

Why common collector amplifier is known aa emitter follower, Q. Why a commo...

Q. Why a common collector amplifier is called an emitter follower?         When the input voltage goes through its positive half cycle, the output voltage is also seen to go th

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

Fixed bias, Fixed bias (base bias): Diagram: Fixed bias (Base ...

Fixed bias (base bias): Diagram: Fixed bias (Base bias) This type of biasing is also known as  base bias . In the instance above figure, the single power source (

Determine active power-reactive power, Three equal impedances of D ohms res...

Three equal impedances of D ohms resistance and C inductive reactance are connected in a DELTA configuration. The line voltage is A00 volts. Determine the line current, phase cur

Operating system, what is serveces of operating system?

what is serveces of operating system?

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