Re: What machine goes with PoP -04?

[Emir Garza]

I can see the message-security assist facility (and the KMC instruction) in the 
third edition (-02, June 2003) of PoP.
I could be wrong, but I think the first models to include message-security 
assist were the IBM z890 and z990.
Regards,
Emir Garza