Datasheet

142
11011B–ATARM–21-Feb-12
SAM3N
10.18.5 ISB
Instruction Synchronization Barrier.
10.18.5.1 Syntax
ISB{cond}
where:
cond is an optional condition code, see “Conditional execution” on page 84.
10.18.5.2 Operation
ISB acts as an instruction synchronization barrier. It flushes the pipeline of the processor, so that
all instructions following the ISB are fetched from memory again, after the ISB instruction has
been completed.
10.18.5.3 Condition flags
This instruction does not change the flags.
10.18.5.4 Examples
ISB ; Instruction Synchronisation Barrier