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

Find the truth table and the type of gate, Q. The DeMorgan's theorems sugge...

Q. The DeMorgan's theorems suggest that the basic logic operations can be realized by use of inverters and NAND gates only. For the circuits shown in Figure,  find the truth table,

Add instruction , ADD Instruction Op code  format  of ADD instruction...

ADD Instruction Op code  format  of ADD instruction is Replace  the three bit code  of the register R from   to obtain the op code of the  required ADD instruction . op co

inverters- recifiers and inverters, Inverters Inverter is a device w...

Inverters Inverter is a device which  converts dc power into ac  power at desired output voltage and frequency. Inverters are used in  uninterruptible power  supply  hvdc  tra

Centrifugal compressor, hi I need information of Compressor Shaft Impelle...

hi I need information of Compressor Shaft Impellers Coupling Hub Thrust Collars Balance Drum for centrifugal compressor with pecture

What is ohmmeter, What is ohmmeter An ohmmeter is an instrument for mea...

What is ohmmeter An ohmmeter is an instrument for measuring resistance

Merits and demerits of voltage divider bias, Merits and Demerits of Voltage...

Merits and Demerits of Voltage divider bias: Merits: 1. Not like the above circuits, only one dc supply is essential. 2. Operating point is approximately independent o

Determine the admittance of the parallel combination, Q. The voltage across...

Q. The voltage across a parallel combination of a 100- resistor and a 0.1-µF capacitor is 10 cos(5000t +30°) V. Determine the admittance of the parallel combination and find the c

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