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

Collection and payment systems, Collection and Payment Systems Payment...

Collection and Payment Systems Payments are currently made in person in most of the places. Only some places payments could be made on line or by the ATM (Automated Teller Mac

A circuit having of a resistor connected in series, A circuit having of a r...

A circuit having of a resistor connected in series with a 0.5µF capacitor and has a time constant of 12 ms. Verify: (a)  The value of the resistor (b)  The capacitor voltage

Advantages of an rc coupling over a direct coupling, Q. What are the advant...

Q. What are the advantages of an RC coupling over a direct coupling? Draw a basic Rc coupling network and explain. Figure -RC-coupled transistor amplifier The network

Explain common base configuration, Q. Explain common base configuration? ...

Q. Explain common base configuration? Common-base transistor amplifiers are so-called because the input and output voltage points share the base lead of the transistor in commo

Variable capacitors, how can I simulate air variable capacitors in cst simu...

how can I simulate air variable capacitors in cst simulator?

TRIAC, what are the electrical characteristics of TRIAC?

what are the electrical characteristics of TRIAC?

For the low-pass filter configuration calculate cf, Q. For the low-pass fil...

Q. For the low-pass filter configuration of Figure, with R i = R f = 1M, calculate C f such that the 3-dB point is at 1 kHz.

Find current-voltage-resistance or power, 1.   Work out the  voltage for ...

1.   Work out the  voltage for the following arrangement of 1.5V cells : (to achieve a pass grade, solve problems with cells in series, parallel and series-parallel) 2.

Use a 4-to-1 multiplexer to simulate nand logic function, Q. Use a 4-to-1mu...

Q. Use a 4-to-1multiplexer to simulate the following: (a) NAND logic function. (b) EXCLUSIVE-OR logic function. (c) Σ m (1, 2, 4).

Draw the equivalent magnetic circuit diagram, 1) Consider the magnetic circ...

1) Consider the magnetic circuit shown in the figure. Steady currents flow in the windings of N 1 and N 2 turns on the outside legs of the ferromagnetic core. The core has a

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