On Thu, Oct 13, 2022 at 7:57 PM John Rankin <John.Rankin@...> wrote:
Thank you.
By the way. Linux on Z requires an IPL in z mode.? But that is just a side note.
The reason I mentioned it here, is because my company owns MVT, and we are working on a z/MVT.? If you don't recall MVT, it was a competitive operating system to VSE.
? ? > Thank you for the quick response.? However, z/Arch mode ipls
? ? > in ESA and then switches to z mode.? I’m looking for the ability
? ? > to IPL in z mode.
? ? The ability to do that requires support for the Configuration-z/Architecture-Architectural-Mode (CZAM) Facility, which Hercules does not currently support:
? ? ? *
? ? ? *
? ? You CAN of course do a RESTART directly in z/Architecture mode of course. All it takes is a proper z/Arch PSW placed at low core address X'1A0' followed by a Restart Interrupt (i.e. the Hercules "restart" command). We do it all the time in many of our stand-alone integrity tests in our "tests" subdirectory.
? ? But to actually be able to *IPL* directly in z/Architecture mode? Nope. We don't support that yet.
? ? Sorry!? :(
? ? p.s. Why is this question being asked here in this forum? z/Architecture mode has absolutely nothing to do with DOS/VS!
? ? --
? ? "Fish" (David B. Trout)
? ? Software Development Laboratories
? ?
? ? mail: fish@...
