INSTRUCTION DESCRIPTIONS
A - 282 INSTRUCTION SET DETAILS MOTOROLA
Operation: Assembler Syntax:
Begin SWI exception processing SWI
Description: Suspend normal instruction execution and begin SWI exception process-
ing. The interrupt priority level (I1,I0) is set to 3 in the status register (SR) if a long inter-
rupt service routine is used.
Restrictions:
An SWI instruction cannot be used in a fast interrupt routine.
An SWI instruction cannot be repeated using the REP instruction.
Example: :
SWI ;begin SWI exception processing
:
Explanation of Example: The SWI instruction suspends normal instruction execution
and initiates SWI exception processing.
SWI Software Interrupt SWI