In
<cae1xxdfoflzbbxuvaammpcn2nqn9s46bnd7to8urosko87n...@mail.gmail.com>,
on 04/25/2013
at 08:43 AM, John Gilmore <[email protected]> said:
>There is in fact an advantage to using a sign value of F, 1111b,
>instead of C, 1010b in some circumstances.
If so, you haven't iodentified it.
>See the programming note midway in the first column of page 8-3 of
>the current PrOp.
If you are referring to "The result of the PACK instruction converting
such a number to the signed-packed-decimal format may be used directly
as an operand for decimal instructions.", it applies equally well to
1100 (C) and 1110 (E). In effect, the note says that using F will do
no harm, not that it has an advantage.
--
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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