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

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 (

Compute sending - end voltage current and real power, Q. Athree-phase, 60-H...

Q. Athree-phase, 60-Hz transmission line has a total series impedance of 22.86 62.3°  per phase. It delivers 2.5 MW at 13.8 kV to a load connected to its receiving end. Compute th

Methods of testing, Methods of Testing Irrespective of reasons, testin...

Methods of Testing Irrespective of reasons, testing is commonly carried out 1. On site, or 2. In a Meter Testing Station (MTS) accredited as per IS/ISO/IEC 17025.

What is non-maskable interrupts, An interrupt which can be never be turned ...

An interrupt which can be never be turned off (ie. disabled) is called as Non-Maskable interrupt.

Dc machines, a 400V 4-pole DC generator takes an armature current of 50A wh...

a 400V 4-pole DC generator takes an armature current of 50A when rotating at 626 rpm. the armature circuit resistance is 0,25ohms. determine the generated emf. DOC

Illustrate the principle of alignment, Q. Illustrate the principle of align...

Q. Illustrate the principle of alignment? Pieces of highly permeablematerial, such as iron, situated in ambientmediumof lowpermeability, such as air, in which a magnetic field

What is the procedure of binary division, Q. What is the procedure of Binar...

Q. What is the procedure of Binary Division? The Binary division is the repeated process of subtraction, just as in decimal division. Signed Numbers Representation If w

Notations that are used in transistor circuits -h parameters, Notations tha...

Notations that are used in transistor circuits:-             h ie = h 11e = Short circuit input impedance             h 0e = h 22e = Open circuit output admittance

Vacancy, i just want to know any vacant in teaching side. Iam interested in...

i just want to know any vacant in teaching side. Iam interested in taking online classes

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