Two areas bold programs that are loaded from disk. These areas are
The user program area starts at location
to the loader tables. Generally, all user programs and certain syste.
area. Since only one program can be executing in the user
at anyone time, it is impossible (without unpredictable results) for
one program being executed in the user program area to invoke, by
The transient program area is two pages long, extending from locaticn
tbat may also be invoked from the user program area by means of an
executed with the
routines located either in the
the user program area, as close to the loader tables as possible. If
DMSITS cannot find the address of a supported as
then it loads the file
that routine handle the
another program intended for execution in the transient program area.
example, a program being executed in the transient program area
invoke the RENAME command. In
enabled for all interrupts but starts the programs to be executed in the
transient program area disabled for all interrupts. The individual
program may have to use the
the current status of its system mask.