Rev. 1.0, 02/00, page 552 of 1141
2. In case of NMI
When the NMI interruption request is made at the timing in (1) (A) against the ATC interrupt
request, the interrupt appears to take place in NMI at the timing earlier than usual, because
higher priority is assigned to the NMI interrupt processing. The ATC interrupt processing
starts after fetching the instruction at the starting address of the NMI interrupt processing. The
address to be stacked is 02E0 for the NMI and 340 for the ATC.
When the ATC interrupt request is made at the timing in (2) (B) against the NMI interrupt
request, the ATC interrupt processing starts after fetching the instruction at the starting address
of the NMI interrupt processing. The address to be stacked is 02E6 for the NMI and 0340 for
the ATC.