Pushes the Flag register values on to the stack. When this interrupt is activated, these actions take place −Ĭompletes the current instruction that is in progress. It is a single non-maskable interrupt pin (NMI) having higher priority than the maskable interrupt request pin (INTR)and it is of type 2 interrupt. One more interrupt pin associated is INTA called interrupt acknowledge. NMI is a non-maskable interrupt and INTR is a maskable interrupt having lower priority. The 8086 has two hardware interrupt pins, i.e. Hardware interrupt is caused by any peripheral device by sending a signal through a specified pin to the microprocessor. The following image shows the types of interrupts we have in a 8086 microprocessor − Hardware Interrupts The microprocessor responds to that interrupt with an ISR (Interrupt Service Routine), which is a short program to instruct the microprocessor on how to handle the interrupt. ![]() Interrupt is the method of creating a temporary halt during program execution and allows peripheral devices to access the microprocessor.
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