tailieunhanh - Lecture Operating system concepts (Sixth ed) - Chapter 2: Computer-system structures

Chapter 2 - Computer-system structures. The main contents of this chapter include all of the following: Computer system operation, I/O structure, storage structure, storage hierarchy, hardware protection, general system architecture. | Chapter 2 Computer-System Structures Computer System Operation I O Structure Storage Structure Storage Hierarchy Hardware Protection General System Architecture Operating System Concepts Silberschatz Galvin and Gagne 2002 Computer-System Operation I O devices and the CPU can execute concurrently. Each device controller is in charge of a particular device type. Each device controller has a local buffer. CPU moves data from to main memory to from local buffers I O is from the device to local buffer of controller. Device controller informs CPU that it has finished its operation by causing an interrupt. Operating System Concepts Silberschatz Galvin and Gagne 2002 Common Functions of Interrupts Interrupt transfers control to the interrupt service routine generally through the interrupt vector which contains the addresses of all the service routines. Interrupt architecture must save the address of the interrupted instruction. Incoming interrupts are disabled while another interrupt is being processed to prevent a lost interrupt. A trap is a software-generated interrupt caused either by an error or a user request. An operating system is interrupt driven. Operating System Concepts Silberschatz Galvin and Gagne 2002