Software Vs Hardware Interrupts. Hardware interrupt can be invoked with some external device such as request to start an IO or occurrence of a hardware failure. Software interrupt can be invoked with the help of INT instruction.
I need a better understanding of this. Int 0x80There is also a related difference in their role. An interrupt is an event that occurs by a component of a device other than the CPU.
So when CPU gets an interrupt signal trough the indication interrupt-request line CPU stops the current process and respond to the interrupt by passing the control to interrupt handler which services device.
What is a software interrupt give an example. A hardware interrupt is generated by the processor or some connected external device. A hardware interrupt causes the processor to save its state of execution and begin execution of an interrupt handler. Hardware and software interrupts primarily differ by how theyre generated.