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. of the lecture. :. Chandana. :. 1. . Introduction. 2. Example . 3. Definition . 4. Vector table and . Maskable. /. nonmaskable. interrupts . ________________________________________________. Hao. :. Anurag Dwivedi. Let Us Revise. Micro-Controllers. A small . computer integrated . in . a single IC. Has I/O pins, . RAM and Memory. We Use . Atmega. 16. Software Used. CvAvr. : Editor and Compiler. David E. Culler. CS162 – Operating Systems and Systems Programming. Lecture . 12. Sept . 26. , . 2014. Reading: A&D 5-5.6 . HW. . 2 . due. Proj. . 1 . Design Reviews. Mid Term Monday. Synchronization Mechanisms. CS. . 111. Operating . Systems . Peter Reiher. . Outline. Hardware and the operating system. Processor issues. Buses and devices. Disk drives. We’ll talk about memory later. Hardware and the . Operating System. 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. 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 (. 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. 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. 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.. Fall 2014. Hadi Esmaeilzadeh. hadi@cc.gatech.edu. . Georgia Institute of Technology. Some slides adopted from Prof. . Milos . Prvulovic. Better Devices. Now SW, KEY can be read. Problem: several instructions needed to detect change. 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. disable interrupts // Must finish put on queue of threads waiting for lock set guard to 0 call switch enable interrupts else value BUSY guard 0 LockRelease Why disable interrupts N . OR. A Software-generated CALL (internally derived from the execution of an instruction or by some other internal event. An interrupt is used to cause a temporary halt in the execution of program. .