Assignment No. 03 Semester FALL 2010 Advance Computer Architecture-CS501

	Assignment No. 03 Semester FALL 2010 Advance Computer Architecture-CS501		Total Marks: 20 Due Date: 10/01/2011
Objective: To learn and understand basic concepts of I/O subsystems, Input Output Interface, Programmed I/O, and Interrupt Driven I/O. Instructions: Please read the following instructions carefully before solving & submitting assignment: Assignment should be in your own wordings not copied from net, handouts or books. It should be clear that your assignment will not get any credit (zero marks) if: o        The assignment is submitted after due date. o        The submitted assignment does not open or file corrupt. o        The assignment is copied (from other student or copy from handouts or internet). o        Student ID is not mentioned in the assignment File or name of file is other than student ID. For any query about the assignment, contact at cs501@vu.edu.pk GOOD LUCK
Suppose that a certain program takes 800 seconds of elapsed time to execute. Out of these 800 seconds, 590seconds is the CPU time and the rest is I/O time. What will be the I/O time? What is the difference between Daisy-Chained interrupt method and Parallel Priority interrupt method?