While the SMCA (IEESMCA) may have existed "forever", SMCAITME / SMCAIDTE were added in OS/390 R3., one release *after* the introduction of the IPA (IHAIPA). These are in "TIME BIN" format. IPAICTOD was provided in the base IPA. IPAILTOD was added in OS/390 R10. These are in STCK format.
The IPA field identifies the end of the IPL/NIP phase. The SMCA fields actually identify when the SMF address space starts, and is set via the "TIME BIN" service. DISPLAY IPLINFO uses IPAILTOD (it originally used IPAICTOD). The closest-to-true-start-of-IPL time is formatted by the IEAVFTED exec "Timed Event Data Report" which shows various IPL statistics. The value used is not in a programming interface field. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
