Explanation: The Interrupt-request line is a control line along which the device is allowed to send the interrupt signal. Explanation: The Processor after servicing the interrupts as to load the address of the previous process and this address is stored in the stack.
- What is interrupt request line?
- What is interrupt request in computer?
- What is interrupt interrupt?
- What are the different interrupt request lines in OS?
What is interrupt request line?
Abbreviation of interrupt request line, and pronounced I-R-Q. IRQs are hardware lines over which devices can send interrupt signals to the microprocessor. When you add a new device to a PC, you sometimes need to set its IRQ number by setting a DIP switch. This specifies which interrupt line the device may use.
What is interrupt request in computer?
An Interrupt Request is a signal from a hardware device on your computer to your CPU. When a hardware device needs the CPU to do something (such as move the cursor as you move the mouse), the device sends an Interrupt Request to the CPU.
What is interrupt interrupt?
1. Role of Interrupts. Interrupts are signals sent to the CPU by external devices, normally I/O devices. They tell the CPU to stop its current activities and execute the appropriate part of the operating system.
What are the different interrupt request lines in OS?
Master PIC
- IRQ 0 – system timer (cannot be changed)
- IRQ 1 – keyboard on PS/2 port (cannot be changed)
- IRQ 2 – cascaded signals from IRQs 8–15 (any devices configured to use IRQ 2 will actually be using IRQ 9)
- IRQ 3 – serial port controller for serial port 2 (shared with serial port 4, if present)