Ross: I'm not sure what you're referring to. There is no hardware restriction to setting the TOD clock without human intervention. Bit 10 of CR 14 is the TOD-Clock-control-override control and can be set to allow software to set the TOD Clock without manual intervention. This is how z/VM sets it at IPL, even though we ask the operator for permission first. There are certainly software considerations required if one wants to change the clock out from under a running system.
Romney On Mon, 14 Jan 2002 16:07:03 -0500 Patterson, Ross said: >Gregg C Levine <[EMAIL PROTECTED]> writes: >> Haven't we been beating this issue over the head with gaffi sticks far >> too long? > >Yup, we have. George hit the nail on the head. I don't >care what software you run to synch up the clock, or which >clocks you choose to synch against. The problem is a >hardware one - System/390 and zSeries boxes won't change >the clock without the permission of a human. Until and >unless IBM changes that, arguments about which NTP server >or client to use are moot. Unless you want to hire someone >to press the TOD-Enable switch or execute the system console/HMC >TOD Enable function every few minutes! :-) > >Ross Patterson >Computer Associates
