There are 2 different types of interrupts in a 8086 microprocessor. Internal and external hardware interrupts. Hardware interrupts happen when a peripheral device asserts an interrupt input pin of the microprocessor. Internal interrupts are started by the state of the CPU or by instruction. When an interrupt occurs the program must first be saved. Once the program is saved , then the processor
. will brand to the address of the service routine. For more detailed information you can go to: http://www.electronics.dit.ie/staff/tscarff/Interrupts/interrupts.htm .
