What do you mean by daisy chain, Computer Engineering

Assignment Help:

Q. What do you mean by Daisy chain?

This scheme provides a hardware poll. With this scheme, an interrupt acknowledge line is chain by different interrupt devices. All I/O interfaces share a common interrupt request line. When processor senses an interrupt it sends out an interrupt acknowledgement. This signal passes via all I/O devices till it gets to requesting device. First device that has made interrupt request so senses signal and responds by putting in a word that is generally an address of interrupt servicing program or a unique identifier on data lines. This word is also called as interrupt vector. This address or identifier in turn is used for selecting an appropriate interrupt-servicing program. Daisy chaining has an in-built priority scheme that is determined by sequence of devices on interrupt acknowledge line.


Related Discussions:- What do you mean by daisy chain

What are the principles of transport layer, Q. What are the principles of t...

Q. What are the principles of transport layer? Transport layer: This layer is the first end-to-end layer. Header of transport layer includes information which helps send the

What is a null object in c++, It is an object of a number of classes whose ...

It is an object of a number of classes whose purpose is to indicate that a real object of that class does not exist. One common use for a null object is a return value from a membe

Data types done between abap/4 & external level, How is conversion of data ...

How is conversion of data types done between ABAP/4 & external level? Conversion among the external layer and the ABAP/4 layer is completed in the SAP dialog manager DYNP.

Explain adaptive routing, Explain adaptive routing. Adaptive routing de...

Explain adaptive routing. Adaptive routing defines the ability of a system, by which routes are characterised through their destination, to change the path that the route takes

Explain bit-o-ring technique, Explain bit-O-Ring technique. The micro p...

Explain bit-O-Ring technique. The micro program represents that branches are not always made to a one branch address. This is a direct consequence of combining easy micro routi

Define a variant of top-down parsing without backtracking, A parser which i...

A parser which is a variant of top-down parsing without backtracking is? Ans. Recursive Descend is a variant of top-down parsing without backtracking.

How read and write is performed using sockets, How read and write is perfor...

How read and write is performed using sockets? An application program interface gives the details of how can an application program interacts along with protocol software. But

What is file scope, Explain File scope File scope: The variables and ...

Explain File scope File scope: The variables and functions with file scope appear outside any block or list of parameters and are accessible from any place in the translation

Prepurchase and purchase consummation of consumer mercantile, Differentiate...

Differentiate between Prepurchase and Purchase Consummation of consumer mercantile model. The prepurchase interaction for consumers comprises three activities: Product/ser

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