Handling multiple devices - computer architecture, Computer Engineering

Assignment Help:

Handling Multiple Devices

Interrupt Priority

  •   Continue to accept interrupt requests from higher priority components
  •   Disable interrupts from component at the same level priority or lower
  •   At the time of execution of interrupt-service routine
  •   Privileged instructions executed in the supervisor mode

Controlling device requests

  •   Interrupt-enable

KEN, DEN

Implementation of interrupt priory by using individual interrupt-request and acknowledge lines

Polled interrupts: Priority decided by the order in which processor polls the component (polls their status registers) vectored interrupts: Priority determined by the order in which processor tells component toput its code on the address lines (order of connection in the chain)

801_Handling Multiple Devices.png

(a)   Daisy chain

Daisy chaining of INTA: If device has not requested any service, passes the INTA signal to next device if necessitate service, does not pass the INTA, puts its code on the address lines Polled

518_Handling Multiple Devices1.png

 


Related Discussions:- Handling multiple devices - computer architecture

Main drawbacks of cd-roms, Q. Main drawbacks of CD-ROMs? The main drawb...

Q. Main drawbacks of CD-ROMs? The main drawbacks of CD-ROMs are: It is read only thus can't be updated Access time is longer than that of magnetic disks. Very

Describe the term- system analyst design, Describe the term- System analyst...

Describe the term- System analyst Design Once analysis has taken place and systems analyst has some idea of the scale of problem and what needs to be done, subsequent stage is

What is called when a star connected intermediate exchange, A star connecte...

A star connected intermediate exchange is known as a? A star connected intermediate exchange is termed as a Hub exchange.

Describe method overloading, Method overloading is to overload methods usin...

Method overloading is to overload methods using similar class name by writing different parameters. This is known as Method Overloading.

Sorting, Different sorting algorithm will be discussed in the lecutres. The...

Different sorting algorithm will be discussed in the lecutres. The task in this worksheet is to write a funtions based on the Quicksort algorithm. When sorting an array of objec

For which class address 192.5.48.3 belogs, Address 192.5.48.3 belongs to? ...

Address 192.5.48.3 belongs to? Address 192.5.48.3 belongs to class C.

Define mapping and list mapping procedure, Define Mapping and List  mappin...

Define Mapping and List  mapping procedure? The transformation of data from main memory to cache memory is known as an Mapping. Associative mapping Direct mapping

Rubbers, engineering plastics ,rubbers ,composites

engineering plastics ,rubbers ,composites

Combinational circuit for sorting the string, Every input line of combinati...

Every input line of combinational circuit represents a specific element of the string let's say xi and every output line results in the form of a sorted list. In order to get the a

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