Introduction › Multilayered Architecture › Software Services › Base Common Services › CA Master
CA Master
The CAMASTER address space is an early IPL, limited function, permanent system address space which provides a set of operating system level services that may be utilized by any CA product. CAMASTER provides the capability for privileged CA components to:
- Register non-space switch PC function routines that may be used instead of SVC routines, or to provide persistent access to component-specific function routines through the hardware assisted program-call mechanism.
- Use persistent private storage provided by the CAMASTER address space (through CAMASTER provided space switch PC storage management services or explicit STORAGE OBTAIN using the CAMASTER ALET in AR ASC mode) to eliminate the need for using z/OS common storage resources such as ESQA or ECSA.
- Provide a CA owned permanent system address space from which to anchor CA product objects, such as public access data spaces, and so forth.
In short, CAMASTER can help CA products reduce their ECSA usage, help them avoid using user SVCs, and help CA products avoid using the IBM *MASTER* address space.
