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.

-- gil

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