Key2 and key4 are flagged in the Diag guide as "reserved". I presume
they are flagged as "reserved" for some vendor(IBM or OTHER) reason.

Can anyone enlighten me?

<snip>
A frequant usage for this sort of thing is either Key2 or Key4.

If you store information in the Key2/Key4 block using MVCDK with the
correct key in R1, then you can reduce the likelyhood of storage
overlays even if your pgm is running Sup+Key0.
</snip>

----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [email protected] with the message: GET IBM-MAIN INFO
Search the archives at http://bama.ua.edu/archives/ibm-main.html

Reply via email to