Why does dma have priority over the cpu, Computer Engineering

Assignment Help:

Why does DMA have priority over the CPU when both request a memory transfer?

The data transfer monitored by DMA controller which is called as DMA channel. The CPU is included only at the starting and end of the transfer, when the CPU wishes to read or write a block of data, it issues a command to DMA Channel by sending read/write operation, address of I/O, number of words to be read or written, as DMA have priority over the CPU when both request a memory transfer.

 


Related Discussions:- Why does dma have priority over the cpu

What is micro programmed control, What is micro programmed control? Mic...

What is micro programmed control? Micro programmed control is a scheme in which control signals are formed by a program same to machine language program.

Associativity of connectives - artificial intelligence, Associativity of Co...

Associativity of Connectives: In order to tell us brackets are useful when to perform calculations in arithmetic and when to evaluate the truth of sentences in logic. Imagine w

Register data type as combinational element, Reg data type as Combinational...

Reg data type as Combinational element module reg_combo_example( a, b, y); input a, b; output y; reg y; wire a, b; always @ ( a or b) begin y = a & b; e

Elucidate in brief the functions of the clock generator chip, Elucidate in ...

Elucidate in brief the functions of the clock generator chip, 8284. 8284 Clock generator: 8284 is an ancillary component to the microprocessors. Without clock generator, many

Chains of inference, Chains of Inference: Now we have to look at how t...

Chains of Inference: Now we have to look at how to get an agent to prove a given theorem using various search strategies? Thus we have noted in previous lectures that, there i

Illustrate diffrent types of modems, Q. Illustrate Diffrent types of modems...

Q. Illustrate Diffrent types of modems? There are four different types of modems: half-duplex, full-duplex, synchronous, and asynchronous.With half-duplex modems data can be tr

Explain topology method used in lan technology in detail, Explain topology ...

Explain topology method used in LAN technology in detail. LAN Topologies: Network topology is a physical schematic that shows interconnection of the various users. There are

Explain the term- signals, Explain the term- Signals -  Signals are use...

Explain the term- Signals -  Signals are used for communication between components -  Signals can be seen as real, physical signals -  Some delay should be incurred in a

Explain bootp (boot strap protocol), Explain BOOTP (Boot Strap Protocol). ...

Explain BOOTP (Boot Strap Protocol). TCP or IP designer observed that several of the configuration steps could be combined in a single step if a server was capable to supply mo

Explain how sap gui handles output screen for the user, Explain how SAP GUI...

Explain how SAP GUI handles output screen for the user. The SAP front-end s/w can either run on the similar computer or on dissimilar computers given for that purpose.  User t

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