On Tuesday, 06/21/2011 at 02:40 EDT, gclo...@br.ibm.com wrote: > Is SYSC the unique restriction? > Another legacy of the last millennium?
"Restriction" against what? It is the one unifying console interface. It works for all the OSes. If you know how to use it for one OS, you know how to use it for the others, both on the HMC and via #CP VINPUT VMSG. And it operates whether the guest is running in 3270 mode or 3215. Ideally, you shouldn't even have to code it in SYSTEM CONFIG. System_3270 (SYSG) and System_Console (SYSC) should be the consoles of last resort. If you don't specify any operator or emergency consoles, SYSG and SYSC are what you get. If the 3270 session is started, you get that. If not, you get the linemode console. Easy. The only time a 1010 would be given would be if an explicitly specified console at IPL wasn't available for use. And I have to think about whether I believe that SAPL parms or LOADPARM that are re-used on SHUTDOWN REIPL constitute "explicitly specified" -- I don't think so. IMO, for the purposes of abend restart and SHUTDOWN REIPL, that stored value is simply prepended to the operator and emergency console lists. Just come up on the next available operator console with a message that says "PREVIOUS CONSOLE DEVICE 01F IS NO LONGER AVAILABLE". While we're Wishing, I would also wish that CP would accompany all IPL wait states with a message to the integrated console, including "SPECIFIED CONSOLE DEVICE 009 IS NOT A 3270". (Natch, the system has to be able to come up far enough to allow CP to connect to SYSC!) The one wait state with no message would be the one for "I can't establish a connection with the integrated console - something is seriously wrong." (If SYSC doesn't exist at all, that's a horse of a different color.) An always-on, always-there console changes the nature of traditional CP error reporting. Alan Altmark z/VM and Linux on System z Consultant IBM System Lab Services and Training ibm.com/systems/services/labservices office: 607.429.3323 mobile; 607.321.7556 alan_altm...@us.ibm.com IBM Endicott
