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Following the release of z390 v1.4.01a with new date and time callable routine named DAT that can be used for benchmark testing, I’ve published a first solution to problem #18.  The solution show that the MIP rate dropped 15% when using the new z10 compare and branch code, but the elapsed time in nano-seconds also reduced by 8%.  Visit the web site to see source code including copy of the new DAT routine and the execution log showing results:

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

I’ve also posted a new problem #18 to write code to find the last non-blank character in an 80 byte text line using the least number of instructions.  Hint there is a z10 instruction that might be the fastest, but I could also be wrong.

Enjoy the weekend!

Don Higgins

mailto:don@...

http://don.higgins.net