In
<77142d37c0c3c34da0d7b1da7d7ca3437231e...@nwt-s-mbx1.rocketsoftware.com>,
on 12/14/2012
at 08:07 PM, Bill Fairchild <[email protected]> said:
>I believe this resolves the confusion over MVC's not working: the
>MVC instruction does not allow for an Index register's being
>specified. Therefore the MVC, all by itself, cannot be used to
>access storage in a data space as, e.g., the L instruction can,
>since L requires an Index register to be used.
There is no requirement to use an index register in order to access a
data space. You need to be in AR mode and you need to load the access
registers corresponding to the base registers. Note that this
requirement applies just as much to L as it does to MVC.
--
Shmuel (Seymour J.) Metz, SysProg and JOAT
Atid/2 <http://patriot.net/~shmuel>
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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