Eit Event; Exception; Interrupt; Trap - Mitsubishi Electric M32R Series User Manual

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4.2 EIT Event

4.2.1 Exception

(1) Reserved Instruction Exception (RIE)
Reserved Instruction Exception (RIE) is generated when execution of a reserved instruction
(unimplemented instruction) is detected.
(2) Address Exception (AE)
Address Exception (AE) is generated when an attempt is made to access a misaligned address
in Load or Store instructions.

4.2.2 Interrupt

(1) Reset Interrupt (RI)
Reset Interrupt (RI) is always accepted by entering the RESET signal. The reset interrupt is
assigned the highest priority.
(2) System Break Interrupt (SBI)
System Break Interrupt (SBI) is an emergency interrupt which is used when power outage is
detected or a fault condition is notified by an external watchdog timer. This interrupt can only be
used in cases when after interrupt processing, control will not return to the program that was
being executed when the interrupt occurred.
(3) External Interrupt (EI)
External Interrupt (EI) is requested from internal peripheral I/Os managed by the interrupt
controller. The 32170's internal interrupt controller manages these interrupts by assigning each
one of eight priority levels including an interrupt-disabled state.

4.2.3 Trap

Traps are software interrupts which are generated by executing the TRAP instruction. Sixteen
distinct vector addresses are provided corresponding to TRAP instruction operands 0-15.
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EIT
4.2 EIT Event
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