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

How the canvas class and the graphics class are linked, A Canvas object giv...

A Canvas object gives access to a Graphics object by its paint() method.

Determine the term queries-DBMS, Determine the term Queries-DBMS Querie...

Determine the term Queries-DBMS Queries most commonly allow information to be retrieved from tables. As the information is often spread across numerous tables, queries allow it

Explain the virtual memory, What is virtual memory?  Virtual memory is ...

What is virtual memory?  Virtual memory is a technique that permits the execution of processes that may not be completely in memory. It is the separation of user logical memory

What is disk controller and word count, What is disk controller The ele...

What is disk controller The electronic circuit that controls the operation of the disk known as disk controller.  word count The number of words in the block to be tran

Properties for of static ram, a) Give eight properties for each of static R...

a) Give eight properties for each of static RAM (SRAM) and DRAM (dynamic RAM) and provide the low-level structure of each type of memory. b) Assume a system with 16 Megabytes o

Purpose of pointer phrase in string command, The Purpose of POINTER phrase ...

The Purpose of POINTER phrase is to verify the leftmost position within receiving field where the first transferred character will be kept

Explain macros and macro processors, System Software 1. Explain MASM? E...

System Software 1. Explain MASM? Explain its features. 2. What is the significance of Lexical analysis and Syntax analysis? 3. Explain macros and macro processors? Explai

What a header represents in CGI document, A Header in CGI document can repr...

A Header in CGI document can represent? A header into CGI document can show format of the document and the location if document used to various URL.

What is static timing, What is Static timing a. Delays over all paths a...

What is Static timing a. Delays over all paths are added up. b. All possibilities, including false paths, verified without the need for test vectors. c. Faster than simul

Human–computer interaction, In the view of the M364 module team, HCI has be...

In the view of the M364 module team, HCI has been superseded by ID. This is because HCI traditionally concentrated upon desktop computers with single users, whereas ID includes the

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