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

Develop the equivalent circuits, (a) contains a freewheeling diode Dm, comm...

(a) contains a freewheeling diode Dm, commonly connected across an inductive load to provide a path for the current in the inductive load when the switch S is opened after time t (

Real power sources - overview, We have seen that a practical power source m...

We have seen that a practical power source may be modelled by an ideal constant voltage source in series with a resistor - a Thevenin equivalent circuit Alternati

Explain radio and television broadcasting, Q. Explain Radio and Television ...

Q. Explain Radio and Television Broadcasting? Radio (AM and FM) and television broadcasting are the most familiar forms of communication via analog transmission systems. The re

What are transistor amplifiers, Q. What are transistor amplifiers? What is ...

Q. What are transistor amplifiers? What is meant by efficiency of an amplifier? What is amplifier coupling? The AMPLIFIER is a device that enables an input signal to control an

Lhld load hl pair direct instruction, LHLD  Load  HL Pair Direct  Instru...

LHLD  Load  HL Pair Direct  Instruction This  instruction is used to copy the  content  of memory  location specified  by opened  in register L  and copy the content of next  m

Explain the synchronous up-down counters, Explain the Synchronous Up-Down C...

Explain the Synchronous Up-Down Counters? The circuit of a 3-bit synchronous up-down counter and a table of its sequence are shown below.  Alike to an asynchronous up-down count

Describe the operation of 8279, Q. Describe the operation of 8279. And als...

Q. Describe the operation of 8279. And also explain following terms: (i) N key Roll over. (ii) Key board debounce. (iii) FIFO RAM. Ans: 8279 is a programmabl

Emirrer feedback bias, RE should be made large enough to swamp out rB/ B. h...

RE should be made large enough to swamp out rB/ B. how does making RE large saturate the transistor b

Calculate arithmetic mean, a) Get the best linear relationship in accordanc...

a) Get the best linear relationship in accordance with least square analysis for the following data:- X 0.9 2.3 3.3 4.5 5.7 6.7 Y 1.1 1.6 2.6 3.2 4.0 5.0 b) The table belo

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