In
<cy1pr0101mb0763a118f326b92feb5c45dece...@cy1pr0101mb0763.prod.exchangelabs.com>,
on 02/13/2015
   at 05:09 PM, J O Skip Robinson <jo.skip.robin...@sce.com> said:

>1. How early in IPL can K S,DEL=RD be issued?

When MVS has stopped using the NIP console and is instead using MCS.

>At some point we see message 'IEE389I MVS COMMAND PROCESSING
>AVAILABLE'. Is that the earliest point?

Given console restructuring and OCO[1], I'd suspect that only IBM
knows for sure.

[1] Promise them the wheel but give them the shaft.
 
-- 
     Shmuel (Seymour J.) Metz, SysProg and JOAT
     ISO position; see <http://patriot.net/~shmuel/resume/brief.html> 
We don't care. We don't have to care, we're Congress.
(S877: The Shut up and Eat Your spam act of 2003)

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