6F3B0253
7. Instructions
FUN 142
IRET
Interrupt return
Expression
−− [ IRET ]−
Function
This instruction indicates the end of an interrupt program. When program execution reaches this instruction, it returns to the original location of the main program (or subroutine).
Execution condition
Input | Operation |
- | Execution |
Output
-
Operand
No operand is required.
Example
An interrupt program
(Timer interrupt,
I/O interrupt #1, #2, #3 or #4)
Note
•The IRET instruction can be used only in an interrupt program.
•There is no specific instruction which indicates the beginning of the interrupt program.
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