On 2017-03-06, at 10:01, Charles Mills wrote:
> A detail, right? In AMODE 64 I could load X'FFFFFFFFFFFFFFF0' into R1, ...
>
You could, but that's not the example I gave. And you can't code
the USING. I'm disputing the operation not of the hardware but of
the USING instruction.
I don't know why a programmer, in AMODE 31, would access the CVT by:
USING X'7FFFFFF0',R1
L R2,X'80000020'
in order to access the CVT, which works in HLASM but not in DASM
(yesterday). Well, I suppose in a bizarre circumstance it saves
a precious base register.
-- gil
