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• P7EH1.MLC/LOG by John Erhman - has been updated to remove work-around for AW since the latest z390 PTF v1.4.01f now has support for AW and all the HFP unnormalized floating point instructions.
• An email quiz question was posted about the most efficient way to test if the left most bit in any mask is on.  The solution is to shift the mask 1 bit right and compare it to the selected bits AND'd with mask.  If the selected bits are high then the high bit must be on.

For more information on contest, visit:

http://z390.sourceforge.net/z390_Mainframe_Assemble_Coding_Contest.htm

Don Higgins

mailto:don@...

http://don.higgins.net

Tel. 727-545-4127