On 12/3/2010 9:26 PM, Paul Gilmartin wrote:
On Dec 3, 2010, at 16:02, Edward Jaffe wrote:
This restriction results in field placement favoritism. The fields to which
access via an SS instruction is expected will tend to be placed within +4K of
the control block or work area whereas fields used by shorter instructions would
tend to be placed elsewhere. For the programs I'm researching, a cursory
examination seems to suggest that rearranging the fields could result in *none*
of the SS instructions needing to be reworked. One can only hope...
Yow! And if you reassemble the entire system you needn't worry
about compatibility.
Good point. Fortunately, these changes are targeted for a release boundary and
the data areas in question, though shared with other programs, are internal use
only and not shared across releases.
--
Edward E Jaffe
Phoenix Software International, Inc
831 Parkview Drive North
El Segundo, CA 90245
310-338-0400 x318
[email protected]
http://www.phoenixsoftware.com/
