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CHAPTER9 DEVICES
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9.10 Interrupt Pointer (I)
9.10 Interrupt Pointer (I)
(1) Definition
The interrupt pointer (I) is used as a label at the start of an interrupt program, and can be used in any programs.
(2) Number of available points
• Basic model QCPU: 128 points (I0 to I127)
• High Performance model QCPU, Process CPU, and Redundant CPU: 256 points (I0 to I255)
Figure 9.90 Interrupt pointer
Interrupt pointer (interrupt program label)
Interrupt program
IRET
I
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