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

What are difference equations, What are Difference Equations? A continu...

What are Difference Equations? A continuous-time system can be described by differential equations. Likewise, a discrete-time system can be explained by difference equations. T

Reporting requirements for distribution licensees, Reporting Requirements f...

Reporting Requirements for Distribution Licensees Distribution licensees are needs to provide operational reports, commercial reports, financial reports, energy audit reports

Microprocessor, what is the function of CBW in the microprocessor

what is the function of CBW in the microprocessor

Show the r’s complement, Q. Show the r’s Complement? Step1- get the (r-...

Q. Show the r’s Complement? Step1- get the (r-1)'s complement Step 2- add 1 to the result ex.            935 10                                     9 9 9

Configured the dual processor architecture, Configured dual processor archi...

Configured dual processor architecture  In centralized SPC, dual processor architecture can be configured to operate in following one of three modes: 1.  Standby mode: In

What is the per-unit slip at full load, Q. A three-phase, 60-Hz induction m...

Q. A three-phase, 60-Hz induction motor runs at almost 1800 r/min at no load, and at 1710 r/min at full load. (a) How many poles does the motor have? (b) What is the per-unit

What do you mean by signal multipath, Q. What do you mean by Signal multipa...

Q. What do you mean by Signal multipath? Signal multipath occurs with electromagnetic wave propagation via sky wave in the HF range. When the transmitted signal reaches the rec

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.

When both mt2 and gate are negative, When both MT 2 and Gate  are Negativ...

When both MT 2 and Gate  are Negative In this case N 3   works as a remote gate. Current  flows form layer P 2 to layer  N 3 junction N 1 P 1 is reverse biased  and it  br

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