From: "John McKown" <[email protected]> To: [email protected] Sent: Wednesday, February 19, 2014 7:20:20 AM Subject: Re: assembler >They have done some, such as with Find LeftMost One and Population Count (could somebody explain to me what this might really be used for?). One possible use of Population Count is in building any kind of DASD Locate Record Extended CCW that involves reading or writing a track set which is defined by a bit map which is either one or two bytes long, refers to the 16 consecutive tracks after the LRE's domain beginning point has been established, can contain any number of one bits, and the total number of one bits must be copied into the one-byte record count field in the LRE's basic parameters. Bill Fairchild Nolensville, TN
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