As none of the information that you seek constitutes programming interfaces, I am reluctant to be very specific without understanding why you have a need for it.
LPA consists of PLPA (built from LPALSTxx) MLPA (built from IEALPAxx) FLPA (built from IEAFIXxx) device support modules dynamic LPA (built from CSVDYLPA, SETPROG LPA, and LPA statement in PROGxx) PLPA is represented by an "LPA directory" of LPDEs. CVTLPDIA is not the address of a queue. That field itself is not necessarily anything that you can use directly unless you are AMODE 24. The 3 byte field CVTLPDIR within CVTLPDIA is the address of the PLPA directory of LPDEs which happens currently to be an array, not a queue. The others are all represented by CDEs on the "active LPA" queue. You write "Since we can load the module to CSA and modify this queue to reflect the change, dynamic LPA is available." I hope you did not mean "we" as in "your program" modifies this queue directly. That is, and always has been, unacceptable (although far from unknown). It is not necessarily true that any queue is searched. There is also a hash structure. In many cases after doing a hash search, the active LPA queue is searched, and that is to account for the "unacceptable" practice which I mentioned earlier. It is certainly true that if there is a copy of module M both in PLPA and also in active LPA, that a LOAD or CSVQUERY by name will locate the active LPA copy. And if there are multiple copies of M in active LPA, the most recently added copy will be found, with the caveat that the rule applies to things added by supported mechanisms. The main difference beween LPDEs and CDEs, aside from the bit that indicates it is one vs the other is that (major, not alias) CDEs point to an "extent list" (lengths and addresses of each extent), and (major, not alias0 LPDEs contain only one extent and that extent is contained in the last bytes of the LPDE. What are you trying to accomplish or find out? CSVQUERY will locate information about an LPA module. CSVINFO can run through all the LPA modules given your exit routine control for each. Those are the intended interfaces made available by z/OS. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
