machine's page zero is not in real storage. Obtains the
before continuing. If the system lock is not immediately available,
state and reflect the
store an old
change, store user's new
dispatch via
continuing. If the system lock is not
the interrupt and exit to
condition.
the caller by loading the
old
address are maintained in a new
calling routine and restores addressabi1ity via R12 and R13.
to charge for supervisor overhead. If problem
interruption, update the virtual machine