Talk to yourself?

interrupt (breakpoint?)

No, interrupt. Your PC has 16 of them, this particular processor has one. Perhaps the term is more familiar as IRQ, that thing you used to have to set for all your hardware; IRQ is the setting for which interrupt occurs when the hardware device needs attention.

Anycase, I don't think it's so much vocalizing your thought that clarifies it as trying to explain it as if to someone not immediately familiar with the problem you're trying to solve.