What is the difference between Trap and Interrupt?

Question

What is the difference between Trap and Interrupt?

If the terminology is different for different systems, then what do they mean on x86?

Answer 1

A trap is a special kind of interrupt which is commonly referred to as a software interrupt. An interrupt is a more general term which covers both hardware interrupts (interrupts from hardware devices) and software interrupts (interrupts from software, such as traps).