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What is irq3 used for?
IRQ Interrupt Request 3 are usually reserved for COM port (1,2,3,4) but can be assigned to anything.Interrupts are a commonly used technique for computer multitasking, especially in real-time computing. Such a system is said to be interrupt-driven.An act of interrupting is referred to as an interrupt request (IRQ
What is the purpose of interrupts in Operating System?
Answer: An interrupt is a hardware-generated change-of-flow within the system. An interrupt handler is summoned to deal with the cause of the interrupt; control is then returned to the interrupted context and instruction. A trap is a software-generated interrupt. An interrupt can be used to signal the completion of an I/O to obviate the need for device polling. A trap can be used to call operating system routines or to catch arithmetic errors.Type your answer here...
You are troubleshooting a system problem and believe that there is a duplicate interrupt being used on the system what file can you view to verify this?
/proc/interrupts
What is irq3?
Interrupt Request - IRQ0 through IRQ7 commonly.Interrupts are a commonly used technique for computer multitasking, especially in real-time computing. Such a system is said to be interrupt-driven.An act of interrupting is referred to as an interrupt request (IRQ)
What are the benefits of interrupt driven operating system?
interrupts are used to ensure adequate service response times by the processing.
What is The highest priority interrupt in 8085 microprocessor?
In most of the Intel processors, the highest priority interrupt is the NMI line (called TRAP in the 8085). NMI means a non-maskable interrupt, and that means it cannot be delayed or ignored. The NMI line is usually used when there are problems such as non-recoverable errors, but it could be used for debugging or profiling.Most of the Intel CPUs have 2 interrupt lines, the NMI line and the standard interrupt line. The regular interrupt line is connected to one or more interrupt controllers which split that interrupt signal to different devices. The NMI line is for the most critical processes in the computer.
Why used interrupts?
An interrupt is a signal from hardware (h/w interrupt) or software (s/w interrupt) to indicate the occurence of an event. It indicates the need of a change in execution. Interrupt handling or servicing of the interrupts depends upon the design of the operating system. A routine which will be called for servicing the interrupt is known as interrupt service routine or ISR and the request for the ISR through an interrupt is known as interrupt request or IRQ. Interrupt is a mechanism used for implementing the multitasking concept. It will use the concept of context switching, for servicing the request.
What is a trap in an operating system with example?
Trapdoor is a secret undocumented entry point into a program used to grant access without normal methods of access authentication. A trap is a software interrupt, usually the result of an error condition.
What are the four timers used in TCP?
Connection establishment timer, persist timer, keepalive timer, retransmission timer
Why is a timer function incorportated in a window heating system circuit?
A timer is often used in a heated rear window function to stop the circuit from over heating and blowing a fuse if forgotton about.
Why timer can be used in star delta starter?
delay timer
What is software interrupt with examples?
Interrupt generated by executing an instruction is called software interrupt. It's also called 'trap'. Software interrupts are generally used to make system calls i.e. to request operating system to perform an I/O operation or to run a new program.Examples:C++:A cout or cin statement would generate a software interrupt because it would make a system call to print something.A fork() statement in Linux would generate a software interrupt because it would make a system call to create a new process.Assembly IA32:The instruction int 21h would generate a software interrupt which would request something from operating system (depending on the register values).
