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All David Wilkinson has submitted a new solution for #11 with fewer instructions. See the contest webpage for details: ...
1 Sep 21, 2008
11:35 pm

Don Higgins
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All I am pleased to announce new #1 solution for problem #5 submitted by David Wilkinson. Here is a way to translate any number of binary bytes to EBCDIC hex...
1 Sep 8, 2008
8:24 pm

Don Higgins
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All The following 3 new solutions and 1 new problem have been contributed: * 08/11/08 * P17DW1.MLC <http://z390.sourceforge.net/contest/p17/P17DW1.TXT> /LOG ...
1 Aug 11, 2008
1:37 pm

Don Higgins
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All * 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...
1 Jun 9, 2008
11:52 pm

Don Higgins
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All It's been a while, but the contest will resume once z390 priority 1 compatibility RPI's are fixed hopefully in the next day or two with RPI v1.4.01f. I'm...
1 Jun 8, 2008
3:02 am

Don Higgins
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All Congratulations to Werner Rams for coding and testing published random number generator which ran for 5 hours on his PC without any duplications. To see...
1 Apr 11, 2008
9:15 pm

Don Higgins
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All Congratulations to Werner Rams for solution to #19 using TRTR. Honorable mention also goes to Steve R.K. for sending email suggesting TRTR earlier the...
2 Apr 9, 2008
1:34 pm

Martin Ward
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All 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...
1 Mar 21, 2008
10:01 pm

Don Higgins
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All Correction on the number of instructions required for solution to problem 17 - it is 827 and not 30,619. I had mistakenly published the instructions per ...
1 Mar 9, 2008
1:02 pm

Don Higgins
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All Congratulations to Werner Rams for the first solution to problem #17. His solution compresses and decompresses 3 records using CLCL to detect end of ...
1 Mar 7, 2008
4:19 pm

Don Higgins
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Congratulations to Werner Rams for a better solution to primes from 3 to 97 using bit table! ...
1 Feb 23, 2008
11:08 pm

Don Higgins
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Can we have some clarification on Problem 17 in as far as any constraints on the operand field. For example, compressing: L1 CLI F1,64 Is much easier...
2 Feb 23, 2008
12:46 pm

Don Higgins
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All Visit the ZMFACC contest web site for links to source code and output logs plus new problems: ...
3 Feb 23, 2008
12:46 pm

Don Higgins
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All Today a friend living in Finland sent me this fascinating reference on hash tables by Bob Jenkins: http://burtleburtle.net/bob/hash/doobs.html It...
1 Feb 20, 2008
12:35 pm

Don Higgins
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All Congratulations to Werner Hams for submitting new #1 solution to problem #11 hash table lookup using linked list for duplicates. This solution uses a few...
1 Feb 5, 2008
8:12 pm

Don Higgins
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All I've posted correction to comments on Martin Ward's solution to #14. It supports up to 31 digit solutions. I've also posted new current problem category...
1 Jan 31, 2008
8:35 pm

Don Higgins
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All Congratulations to Martin Ward for a very impressive solution to problem #14 using packed decimal to handle higher value Ackerman functions with up to 15 ...
1 Jan 29, 2008
6:03 pm

Don Higgins
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All Problem #15 has been posted. Neither #14 or #15 have any solutions posted yet. Visit website for details: ...
1 Jan 29, 2008
1:54 pm

Don Higgins
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All ZMFACC Assembler Coding Contest - A new problem #14 - code the Ackerman function to calc a(4,1)=65533. Code a macro assembler program to calculate the...
1 Jan 27, 2008
10:00 pm

Don Higgins
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All I've updated the problem statement for #13 per posting on Mainframe Assembler List indicating it was incorrect. I've also posted a new solution to #13...
1 Jan 27, 2008
3:01 am

Don Higgins
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All Congratulations to Steve Comstock with http://www.trainersfriend.com/ for posting first solution to problem #13 using 5 packed decimal instructions. See...
1 Jan 25, 2008
1:39 pm

Don Higgins
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I've posted a second solution to the hash table problem which allows up to 2 duplicate hash key searches per entry resulting in a reduction in the hash table...
1 Jan 24, 2008
6:48 pm

Don Higgins
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Given a decimal number with 2 decimal places representing the total cost of an item and another decimal number representing the quantify, calculate the unit...
1 Jan 24, 2008
6:48 pm

Don Higgins
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All I've posted a solution to problem #11 which asks for the fastest hash routine to retrieve address of table entry given 8 character key for a table of known...
1 Jan 18, 2008
3:31 pm

Don Higgins
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All This was posted on Hercules email group today by Jay Maynard, and I thought I'd pass it on for those interested in using it to extend older assemblers to...
1 Jan 15, 2008
1:18 pm

Don Higgins
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All Two new solutions have been posted 1. P10MB1.MLC <file:///W:\websites\z390\contest\p10\P10MB1.TXT> /LOG ...
1 Jan 15, 2008
2:32 am

Don Higgins
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All 1. A new problem #12 submitted by Tony Matharu has been posted regarding standard deviation. 2. A new solution to #4 submitted by Alfred Nykolya...
1 Jan 6, 2008
1:39 pm

Don Higgins
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All 1. I've posted my solution for problem 10 which uses about 27 instructions and no loops to convert any 128 bit unsigned integer. The technique is...
1 Jan 1, 2008
2:34 pm

Don Higgins
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All Since the last update on 12/27/07 we have 2 new solutions posted: 1. Congratulations to Mats Broberg, Roland Johansson, and Seb Sweden for the new #1...
1 Dec 30, 2007
10:45 pm

Don Higgins
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All A new problem #10 and another solution for problem #9 have been posted on the contest web site here: ...
1 Dec 27, 2007
3:04 pm

Don Higgins
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