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

Effect of power factor correction capacitors, For a 50kW three phase rectif...

For a 50kW three phase rectifier connected at 415 V to a point of common coupling with a short circuit capacity 500kVA modelled as an inductive source, design filters to make the s

Transformers, A 440v 4-pole dc generator takes an armature current of 50A w...

A 440v 4-pole dc generator takes an armature current of 50A when rotating at 626 rpm. the armature circuit resistance is 0.25 ohms. determine the generated emf?

Show the block diagram for a 3-bit ripple counter, Q. (a) For a JKFFwith JK...

Q. (a) For a JKFFwith JK = 11, the output changes on every clock pulse. The change will be coincident with the clock pulse trailing edge and the flip-flop is said to toggle, when T

Produce a storage scope using peripheral interface control, First section ...

First section Aim: the aim of this project is to produce a storage scope using a PIC. In this project, several samples were taken from an analog signal and stored in the memo

Explain hall effect, Explain Hall Effect. Hall Effect: If a current c...

Explain Hall Effect. Hall Effect: If a current carrying conductor is placed in a magnetic field, a voltage is produced that acts in the perpendicular direction to the current

A, A microstrip antenna system operating at 915MHz must be designed using R...

A microstrip antenna system operating at 915MHz must be designed using Rogers RO3010 substrate with the thickness of 0.635mm.

Mvi move immediate instruction , MVI Move Immediate  Instruction This...

MVI Move Immediate  Instruction This form  of the instruction is used to copy 8bit  data ( specified  in the  instruction )  directly  into the  register or memory  pointed by

Compute the area of each plate, Q For a parallel-plate capacitor with plate...

Q For a parallel-plate capacitor with plates of area A m 2 and separation d m in air, the capacitance in farads may be computed from the approximate relation Compute the a

How to get solution in taxation assignment help, i need help with taxation ...

i need help with taxation assignment help, how do i get solution for it?

Find the duration t of the pulse, By a simple time multiplexing of natural ...

By a simple time multiplexing of natural samples over a single line, a large radar site transmits 85 analog signals, each with 200-Hz bandwidth. If the sampling is done at twice th

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