Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. Interrupt - Driven Input-output?
Problem with programmed I/O is that processor has to wait a long time for I/O interface to see whether a device is free or waits until completion of I/O. Result is that the performance of processor goes down extremely. What is the solution? What about processor going back to do other useful work without waiting for I/O device to finish or get freed up? However how will processor be intimated about completion of I/O or a device is ready for I/O? A well-organized mechanism was considered for this which is referred to as interrupt-driven I/O. In this mechanism provision of interruption of processor work once device has completed I/O or when it's ready for I/O has been provided.
Interrupt-driven I/O mechanism for transferring a block of data is displayed in Figure 5(b). Please note after issuing a read command (for input) CPU goes off to do some other useful work whereas I/O interface proceeds to read data from connected device. On completion of an instruction cycle CPU checks for interrupts (that will happen when data is in data register of I/O interface and it now requires CPU's attention). Now CPU saves important register and processor status of executing program in a stack and requests I/O device to provide its data that is placed on data bus by I/O device. After taking needed action with data CPU can go back to program it was executing before interrupt.
write miss
How to declare array in c
explain depth buffer algorithm and its application?
How can common bus system be constructed A common bus system could be constructed using multiplexers. These multiplexers select source register whose binary information is then
What is a ABAP/4 module pool? -Every dynpro refers to exactly one ABAP/4 dialog program. Like a dialog program is also known as a module pool ,since it having on interactive mo
Jobs which are admitted to the system for processing is called ? Ans. Long-term scheduling is admitted to the system for processing.
1. The Goal: Do you think that this is an operational methodology or a philosophy? Please explain. 2. How to apply Constraint Management to a Production Facility? How about to a
How to attain 180 degree precise phase shift? Never tell using inverter: a. DCM an inbuilt resource into most of FPGA can be arranged to get 180 degree phase shift. b. BU
Give brief summary of common aspects found in spreadsheets - It's made up of columns and rows; every row is identified by a number and every column is identified with a letter
What is meant by opening a data file A data file is a file that can be read from or written to. Data files are particularly useful when large amounts of data are involved. Each
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd