There are also many control blocks used in Contents Supervision that must be 
changed.  Then all the programs that inspect, manipulate, or format-dump those 
control blocks must also be changed.

Bill Fairchild
Rocket Software

From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of 
Chris Craddock
Sent: Wednesday, December 01, 2010 10:33 AM
To: [email protected]
Subject: Re: 64 bit mode disabled

As you can probably imagine, there is literally no way to preserve
compatibility with the near infinite number of programs that currently
understand and inspect the task management control blocks, so while
execution above the bar is a goal, it is a long way off yet.

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