interrupt means to stop the execution of some task and save it, start the new task which is caused by it. interrupt increases the efficiency of a computer and caused by multi-tasking. mehmood Ahmed (Superior university)
Interrupt flags are used to interrupt the processor on what it is doing. When the flag is triggered the processor stops what it is doing attends what the flag wants to get done and once that is done it goes back to what it was doing. It is very useful for detect bug.
The technique of catheter ablation (meaning tube-guided removal) is used to interrupt the abnormal contractions in the heart, allowing normal heart beating to resume.
Intr timer interrupt 0 and 1 external interrupt 0 and 1
By checking the interrupt register at fixed time intervals
polling interrupt is alternative to the vector interrupt , it requires that the interrupt handler poll or send a signal to each device in turn in order to find out which one is sent the interrupt request.....
IRET stands for RETurn from Interrupt.
RIM is Read Interrupt Mask. It is used to access the interrupt mask register, which contains the status of the three interrupt masks and the serial input data pin.
RIM
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...
Type-2 interrupt is called NMI (Non-maskable interrupt).May occur when 8086 receives a low to high transition on it's interrupt response.Could be used for handling critical situations like power failure detection.
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.
IRQ 0
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.
In an IBM PC or compatible computer, IRQ2 should not be used because it is internally cascaded from the second 8259 Programmable Interrupt Controller, so as to provide IRQ8 through IRQ15.
Interrupts are required in order to get the attention of the CPU. A CPU typically has two interrupt lines. One is the nonmaskable interrupt line (NMI). That is used in the case of critical errors, since this interrupt cannot be ignored. The other one is the regular interrupt line. That is used by hardware devices and certain software to get the attention of the CPU. When you move a mouse, for instance, that creates both a hardware and software interrupt. So the CPU would then process the mouse driver code and move the cursor, then get back to what it was doing.
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
Interrupt flags are used to interrupt the processor on what it is doing. When the flag is triggered the processor stops what it is doing attends what the flag wants to get done and once that is done it goes back to what it was doing. It is very useful for detect bug.