IO Systems n IO Hardware n Application IO

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I/O Systems n I/O Hardware n Application I/O Interface n Kernel I/O Subsystem n

I/O Systems n I/O Hardware n Application I/O Interface n Kernel I/O Subsystem n Transforming I/O Requests to Hardware Operations n Streams n Performance วเชษฐ พลายมาศ | ระบบปฏบตการ (OS: Operating Systems) | ระบบรบเขา /สงออก (I/O Systems) | 2

Interrupts n CPU จะถก Interrupt request line โดย I/O device n Interrupt handler (CPU)

Interrupts n CPU จะถก Interrupt request line โดย I/O device n Interrupt handler (CPU) ไดรบ interrupts n จะพจารณาวาตองทำตามคำรองขอนนทนทหร อรอเวลาไวกอน n Interrupt vector to dispatch interrupt to correct handler § Based on priority § Some unmaskable n Interrupt mechanism also used for exceptions วเชษฐ พลายมาศ | ระบบปฏบตการ (OS: Operating Systems) | ระบบรบเขา /สงออก (I/O Systems) | 15

Intel Pentium Processor Event-Vector Table วเชษฐ พลายมาศ | ระบบปฏบตการ (OS: Operating Systems) | ระบบรบเขา

Intel Pentium Processor Event-Vector Table วเชษฐ พลายมาศ | ระบบปฏบตการ (OS: Operating Systems) | ระบบรบเขา /สงออก (I/O Systems) | 17

อปกรณแบบบลอกและแบบอกขระ Block and Character Devices n Block devices ไดแก disk drives § Command ประกอบดวย

อปกรณแบบบลอกและแบบอกขระ Block and Character Devices n Block devices ไดแก disk drives § Command ประกอบดวย read, write, seek § Raw I/O หรอ file-system access § อาจใชการเขาถงแฟมแบบ Memory-mapped n Character devices ประกอบดวย keyboards, mice, serial ports § Commands ประกอบดวย get, put § Libraries layered on top allow line editing วเชษฐ พลายมาศ | ระบบปฏบตการ (OS: Operating Systems) | ระบบรบเขา /สงออก (I/O Systems) | 23

Sun Enterprise 6000 Device-Transfer Rates วเชษฐ พลายมาศ | ระบบปฏบตการ (OS: Operating Systems) | ระบบรบเขา

Sun Enterprise 6000 Device-Transfer Rates วเชษฐ พลายมาศ | ระบบปฏบตการ (OS: Operating Systems) | ระบบรบเขา /สงออก (I/O Systems) | 28

Hardware Basic Hardware Hardware vs Software Hardware includesHardware Basic Hardware Hardware vs Software Hardware includes
Hardware Architecture Server Hardware Network hardware Client hardwareHardware Architecture Server Hardware Network hardware Client hardware
HARDWARE TEAM PRESENTATION HARDWARE the only WAY HARDWAREHARDWARE TEAM PRESENTATION HARDWARE the only WAY HARDWARE
HARDWARE A SOFTWARE Zkladn informace HARDWARE Hardware jsouHARDWARE A SOFTWARE Zkladn informace HARDWARE Hardware jsou
Hardware s software Hardware Hardver ang hardware alattHardware s software Hardware Hardver ang hardware alatt
Hardware i software Hardware Hrdver eng hardware suHardware i software Hardware Hrdver eng hardware su
Hardware und Netzwerktechnik Schnittstellen und Hardware Hardware undHardware und Netzwerktechnik Schnittstellen und Hardware Hardware und
Hardware A Ferrari Hardware Con hardware si indicaHardware A Ferrari Hardware Con hardware si indica
Hardware and Software Basic Hardware Hardware vs SoftwareHardware and Software Basic Hardware Hardware vs Software
HARDWARE Co je to hardware HARDWARE je strojHARDWARE Co je to hardware HARDWARE je stroj
Computer Main parts Hardware Software Hardware Computer hardwareComputer Main parts Hardware Software Hardware Computer hardware
HARDWARE TEAM PRESENTATION HARDWARE the only WAY HARDWAREHARDWARE TEAM PRESENTATION HARDWARE the only WAY HARDWARE
HARDWARE HARDWARE Hardware z anglickho vznamu elezsk zboHARDWARE HARDWARE Hardware z anglickho vznamu elezsk zbo
HARDWARE AND SOFTWARE What is hardware Hardware isHARDWARE AND SOFTWARE What is hardware Hardware is
PERIFERICOS Y HARDWARE HARDWARE El trmino hardware sePERIFERICOS Y HARDWARE HARDWARE El trmino hardware se
HARDWARE Y SOFTWARE HARDWARE El hardware de unHARDWARE Y SOFTWARE HARDWARE El hardware de un
Technology ICT Core Computer Systems Hardware Software HardwareTechnology ICT Core Computer Systems Hardware Software Hardware
Hardware Information Systems and Management Hardware Any machineryHardware Information Systems and Management Hardware Any machinery
Technology ICT Core Computer Systems Hardware Software HardwareTechnology ICT Core Computer Systems Hardware Software Hardware
Technology ICT Core Computer Systems Hardware Software HardwareTechnology ICT Core Computer Systems Hardware Software Hardware
Network Hardware Core 3 Communication Systems Network HardwareNetwork Hardware Core 3 Communication Systems Network Hardware
Chapter 13 IO Systems IO Hardware Application IOChapter 13 IO Systems IO Hardware Application IO
IO Systems n n n IO Hardware ApplicationIO Systems n n n IO Hardware Application
IO Systems n n n IO Hardware ApplicationIO Systems n n n IO Hardware Application