PPT-MIPS I/O and Interrupt SPIM I/O and MIPS Interrupts

The materials of this lecture can be found in A7A8 3 rd Edition and B7B8 4 th Edition The MIPS memory Actually everything above 0x7fffffff is used by the system What is in there. of the lecture. :. Chandana. :. 1. . Introduction. 2. Example . 3. Definition . 4. Vector table and . Maskable. /. nonmaskable. interrupts . ________________________________________________. Hao. :. 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:. Ganesh Pitchiah. . What’s an MCU ?. Frequency = 8 MHz. Time Period = 1/f. = 0.125 us . Code for Switching LED. int a; . // . Define . variable . 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. Tami Meredith, Ph.D.. CSCI 3431. Why?. Devices need CPU access. E.g., NIC has a full buffer it needs to empty. These device needs are often asynchronous and unrelated to the currently executing process. Design of Microprocessor-Based Systems. Mark Brehob. University of Michigan. Lecture 6 & 7: Interrupts (please bring slides again on Thursday). January 26. th. & 28. th. . Exceptions. , Traps, Faults . Interrupt Handling. David Ferry, Chris Gill. CSE 522S - Advanced Operating Systems. Washington University in St. Louis. St. Louis, MO 63130. 1. Why Interrupts?. Interrupts allow a currently executing process to be preempted. Fall 2009. Kipp Schoenwald. Stephen . Hunte. Joseph Storey. Outline. Interrupts . Vectors and Vector Table. Flow Chart. Applications. Example 1. Example 2. Thermistors. Theory. Applications. Opto-isolators. 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. s and. . Time. r. s. An. . embed. d. ed. . s. y. s. t. em. . h. a. v. e. . t. o. . r. espo. n. d. . t. o. . e. v. e. n. ts. . whe. r. e. . t. i. m. i. ng. . i. s. . a. . k. e. y. c. on. s. 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.. The materials of this lecture can be found in A7-A8 (3. rd. Edition) and B7-B8 (4. th. Edition). . The MIPS memory . Actually, everything above 0x7fffffff is used by the system.. What is in there?. Dept. Of Electrical Engineering. IIT Goa. The 8051 . Microcontroller . and Embedded . Systems: . Using . Assembly . and. . C. Mazidi. , Mazidi . and. . McKinlay. Prof. Bidyadhar Subudhi. INTERRUPTS PROGRAMMING. Lab 4: Interrupt. Prof. Chung-Ta King. Department of Computer Science. National Tsing Hua University, Taiwan. Introduction. In . this lab, we will . learn interrupts of MSP430. Handling interrupts in MSP430.