CEJECrS AND OPERATORS
Table
Viewpoint of IP/GDP in 432 System
. Directly Accessible 432 Infor.mation
oaccess descriptors All access descriptors in the four Entry Access Segments.
o data | All objects of type data segment referenced |
| b¥ access descriptors in the four Entry |
| Access Segments. |
Indirectly Accessible 432 InfoLmation
oInformation, data or access, which can be reached via access path manipllation (i.e. by following a chain of access descriptors using the Enter Access Segment function).
Viewpoint of AP in Peripheral Subsystem
(Controlling an IP operating in logical reference mode)
Directly Accessible 432 Information
oaccess descriptors tmE, the AP cannot directly alter access infor.mation.
o data | all objects of type data segment for which a | |
| windCM is currently opened. | Note, this |
| ~lies the object is directly accessible to | |
| the IP. |
|
Indirectly Accessible | 432 Information |
|
oObjects of type data segment which are directly accessible to the IP rut which have not been mapped. through a window. These objects can be made directly accessible by issuing an IP function request which opens a windCM to the object.
oAccess· descriptors in the Entry Access Segments. These can never be made directly accessible to the AP but can be manipulated via the IP function request facility.
oInformation, data or access, which can be reached via access path manipulation (i. e. by following a chain of access descriptors using the Enter Access Segment function provided by the IP function request facili ty) • Note that two levels of indirection are involved, traversing the path of access descriptors and the use of the IP function request facility.
