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

Gis database, GIS database:  In a nutshell, we could say that the GIS ...

GIS database:  In a nutshell, we could say that the GIS technology integrates general database operations (data query and statistical analysis), along with the unique a

Determine current for a bjt, Q. For a BJT with vBE = 0.7V, I CBO = 4 nA, ...

Q. For a BJT with vBE = 0.7V, I CBO = 4 nA, i E = 1 mA, and i C = 0.9 mA, evaluate α, iB,iSE, and β.

Tunneling effect, what is tunneling effect ? With calculation.

what is tunneling effect ? With calculation.

Electricity policies, Electricity Policies: The National Electricity P...

Electricity Policies: The National Electricity Policy is a main policy instrument having the force of law under the Electricity Act, 2003. The Central and State Electricity Re

Voltage quadrupler, Voltage Quadrupler : A voltage quadrupler circuit is s...

Voltage Quadrupler : A voltage quadrupler circuit is shown in fig. which provides output voltage V0 = 4 Vm. Operation : Capacitor C 1 , C 2 and C 3 charges to Vm, 2Vm and 2Vm

Example of binary subtraction of negative number , Example of binary subtra...

Example of binary subtraction of Negative number Case 2.   Negative number is more than  the positive number ( i e, answer  is negative)  Example : Subtract 92 10 ( 101

The cross-sectional area of a wire of the same length, Some wire of cross-s...

Some wire of cross-sectional area 1mm 2 has a resistance of 20Ω. Determine: a)  The resistance of a wire of the same length and material if the cross-sectional area is 4 mm 2 .

Forward and reverse battery bias, Forward and Reverse battery bias In ...

Forward and Reverse battery bias In diagram below(a) the battery is arranged that is why the negative terminal supplies electrons to the N-type material. These types of electr

Integrator circuit, Q. Addition and integration can be combined by the summ...

Q. Addition and integration can be combined by the summing integrator circuit shown in Figure. With the given component values and input waveforms, sketch v o when S is opened at

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