IBM Device Address
1 , Name Device Type
device table made resident to change the addresses.
2The virtual device address (ccu) of a disk for user files can be
a disk immediately after loading
the primary disk at virtual address 191.
Figure 26. Devices Supported by a
time, some of them are made "transient." This means that when they
are needed, they are loaded from the disk into the transient program
is the size of the transient area. (A page is
storage.) All transient routines must be serially reusable since
they are not read in each time they are needed.