z9, according to this page: https://linux.mainframe.blog/zarchitecture-principles-of-operation/
Tony Thigpen writes: > I am researching the KMC instruction and trying to determine when > KMC-AES-128 became available. > > The first PoP that I find it documented within is SA22-7832-04. > > Which machine did -04 represent? Jonathan Scott, HLASM IBM Hursley, UK
