515CHAPTER 22 INTERRUPT FUNCTIONSFigure 22-12. Non-Maskable Interrupt Request Acknowledge Operation(a) If a new non-maskable interrupt request is generated duringnon-maskable interrupt servicing program execution(b) If two non-maskable interrupt requests are generated duringnon-maskable interrupt servicing program executionNMI Request <2>NMI Request <1>1 Instruction ExecutionMain RoutineNMI Request <1> ExecuteNMI Request <2> ReserveReserved NMI Request <2> ProcessingNMI Request <3>NMI Request <2>NMI Request <1>1 Instruction ExecutionMain RoutineNMI Request <1> ExecuteNMI Request <2> ReserveNMI Request <3> ReserveReserved NMI Request <2> ProcessingNMI Request <3> Not Acknowledged(Only 1 NMI request is acknowledged even iftwo or more NMI requests are generated.)
