PPT-Interrupts (Hardware)

Interrupt Descriptor Table Slide 2 IDT specified as a segment using the IDTR register Slide 3 Calling the IRQ handler Interrupt Context Exceptions First 32 IRQ vectors in IDT Correspond to events generated by the CPU. An Integrated Approach to Architecture and Operating Systems. Chapter 4. Processor Implementation. ©Copyright 2008 Umakishore Ramachandran and William D. Leahy Jr.. Interrupts, Traps and Exceptions. Sam King. Browser m. otivation. Browsers most commonly used application . today. Browsers are an application platform. Email, banking, investing, shopping, television, and more!. Browsers are plagued with vulnerabilities. Mutual Exclusion with Hardware Support. Thomas Plagemann. With slides from. Otto J. Anshus & Tore Larsen. (University of Tromsø). and Kai Li. (. Princeton University. ). Overview. Interrupts:. and Interrupts. Overview. What is an Event?. Examples of Events. Polling. Interrupts. Sample Timer I. nterrupt example. What is an Event?. Wikipedia: . In computing an . event.  is an action that is usually initiated outside the scope of a program and that is handled by a piece of code inside the program.. Ganesh Pitchiah. . What’s an MCU ?. Frequency = 8 MHz. Time Period = 1/f. = 0.125 us . Code for Switching LED. int a; . // . Define . variable . Chung-Ta King. National . Tsing. . Hua. University. CS 4101 . Introduction to Embedded Systems. Introduction. In this lab, we will learn. The interrupt of Timer_A in MSP430. The interrupt of port P1 in MSP430. Sam King. Browser m. otivation. Browsers most commonly used application . today. Browsers are an application platform. Email, banking, investing, shopping, television, and more!. Browsers are plagued with vulnerabilities. Lecture 5. Timer and Interrupts. Networked Embedded Systems. Pengyu. . Zhang. What time is the Apple Watch tracking?. Clock. (all the time | sec) . Alarm. (all the time | sec). Stopwatch . (when open | . Chapter 1 – Introduction (Pgs 3 – 42). Architecture Review. SGG see a computer system as:. Hardware : CPU, Memory, I/O, . communication. . *Operating System* - The rest of the course. Applications: Programs that do stuff (. Interrupts . Read . Almy. , . Chapters . 17 – 19. . . Homework #9 and Lab #9 due next week.. Exam #2 next week.. An . interrupt. is a mechanism for causing a program to temporarily suspend what it’s doing, and do something else instead.. Interrupts. . Prof. Chung-Ta King. Department of Computer Science. National Tsing Hua University, Taiwan. Materials from . MSP430 Microcontroller Basics. , John H. Davies, Newnes, 2008. 1. From Clock to Timer to CPU. David Ferry, Chris Gill. CSE 422S - Operating Systems Organization. Washington University in St. Louis. St. Louis, MO 63130. 1. Why Interrupts?. Interrupts allow a currently executing process to be preempted. . Mutual Exclusion. © Janice Regan, CMPT 300, 2007-2016 . 1. Implementation. Now we have the basic ideas we need. How do we actually implement mutual exclusion?. There are several approaches. Interrupt disabling. Opto. -isolators, . Triacs. , and Thermistors. Alex Buchanan. Aaron May. Peter Ngo. Reason for Interrupts. You might want a certain subroutine executed immediately after a request from an external device or from an internal program, providing certain conditions are met..