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

Transformer, how much transformer oil is used in transformers

how much transformer oil is used in transformers

Successive approximation adc, Successive approximation ADC One method ...

Successive approximation ADC One method of addressing digital ramp ADC's shortcomings is so-called successive approximation ADC. Only change in this design is a very special c

Voltage and frequency control methods - motor control , Voltage  and Freq...

Voltage  and Frequency Control Methods In this  control  method the ratio of voltage  to frequency is kept constant so that the  flux  remains  constant. The voltage  at varia

Asynchronous and synchronous logic design, One of the simplest circuits is ...

One of the simplest circuits is the asynchronous or ' ripple' counter. Below is shown the circuit diagram of a simple 3 stage ripple counter. The operation of this circuit

., Ask quA 380-V, 15-hp, 50-Hz, four-pole, Y-connected wound-rotor inductio...

Ask quA 380-V, 15-hp, 50-Hz, four-pole, Y-connected wound-rotor induction motor has the following impedances in ohms per phase referred to the stator circuit: R1= 0.453? R2= 0.24

Fast recovery diodes - types of power diodes , Fast  Recovery diodes ...

Fast  Recovery diodes The fast  recovery  diodes low recovery times. These diodes  are manufactured by diffusion. They are used in converter circuits where  the speed  of reco

What do you mean by capacitance, Q. What do you mean by Capacitance? An...

Q. What do you mean by Capacitance? An ideal capacitor is an energy-storage circuit element (with no loss associated with it) representing the electric-field effect. The capaci

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