On Tuesday, 07/21/2009 at 12:34 EDT, Marcy Cortes <marcy.d.cor...@wellsfargo.com> wrote: > Shouldn't that be MACH ESA ?
It doesn't matter - XA is an alias for ESA in USER DIRECT. (The machine doesn't have a mechanism to restrict a guest to 370-XA mode.) Sometimes a CMS-based app will issue INDICATE USER to find out and do something stupid like "If not XA, then must be 370." (gag) Alan Altmark z/VM Development IBM Endicott
