Other Instructions of
Processors
ä NOP No operation
ä Can be used to fill in code areas to start
instructions on word boundaries
ä Can be used to control timing in a loop
ä HLT Halt, to stop execution until:
ä A pulse is sent to the reset line
ä Or an interrupt occurs
ä Useful for debugging
ä LOCK
ä Used to synchronize operations when multiple
processors
ä Provides support for semaphores that can be
used to provide mutual exclusion over
hardware resources