COP888FH Datasheet, PDF (31/49 Pages) National Semiconductor (TI) – 8-Bit CMOS ROM Based Microcontrollers with 12k Memory, Comparators, USART and Hardware Multiply/Divide

Interrupts (Continued)
Figure 17 illustrates the different steps performed by the VIS
instruction. Figure 18 shows a flowchart for the VIS instruc-
tion.
The non-maskable interrupt pending flag is cleared by the
RPND (Reset Non-Maskable Pending Bit) instruction (under
certain conditions) and upon RESET.
FIGURE 17. VIS Operation
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FIGURE 18. VIS Flowchart
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