8.6 System Exception Handler

The Nintendo 64 system contains a system-wide exception handler that traps all exceptions and interrupts. This handler is simply an optimized event notifier. That is, upon receiving an event (either a supported exception or interrupt), the handler searches the event table for an associated message queue and message, sends the message to the queue, and simply returns. The handler does not perform any device-specific operations. The osSetEventMesg system call is provided to register a message queue and a message with a specified event.