Fluke Biomedical 942A-200L-M4 - Manual (Page 16)

942A-200L-M4 & 942A-200L-M5 UDR
Operator Manual
2-2
The non-maskable interrupt (NMI) input, upon detection of a low-going edge, requests that a non-
maskable interrupt sequence is generated within the MPU. As with the interrupt request signal, the
processor will complete the current instruction being executed before it recognizes the NMI signal.
Various internal registers are stored on the stack before a branch to the NMI vector occurs. Upon
completion of the NMI routine, the internal registers are restored and program execution continues.
Figure 2-1 System Block Diagram