In a message dated 7/29/2008 6:55:10 A.M. Central Daylight Time, [EMAIL PROTECTED] writes: >The final check is when we look at the UCBMIDAW bit in the UCB involved. If a channel program tried to use MIDAW and it was disabled on the system level, IOS would fail the channel program with a PGM CHECK. I look at that same UCB bit and nowhere else. I trust the rest of the operating system to turn the bit on if the processor, controller, device, and parmlib settings all allow it. So far I haven't gotten any channel program checks, which by the way are detected by the Channel Subsystem (part of the processor hardware microcode) rather than IOS (software component of the operating system). Bill Fairchild Rocket Software
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