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Instructions fun 142 iret interrupt return – Toshiba 6F3B0253 User Manual

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6F3B0253

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T1-16S User’s Manual

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

Output

-

Execution

-

Operand

No operand is required.

Example

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.

An interrupt program

(Timer interrupt,

I/O interrupt #1, #2, #3 or #4)