Re: Reason for 2 digit years was Re: Instruction speeds

On Sun, 18 Aug 2019 20:43:52 +, Seymour J Metz wrote: > > 5. No memory pricing for any of the 7 dwarves (BUNCH, RCA and General > Electric), >Bendix, Data General, DEC, PB, Philco, SDS, Sylvania, TRW or the major > European manufacturers. > The DEC PDP-6 was relentlessly asynchronous (

Re: Reason for 2 digit years was Re: Instruction speeds

Sent: Friday, August 16, 2019 7:28 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Reason for 2 digit years was Re: Instruction speeds I'd note this fun page: https://secure-web.cisc

Re: Reason for 2 digit years was Re: Instruction speeds

I'd note this fun page: https://web.archive.org/web/20170108175446/http://www.jcmit.com/memoryprice.htm -- For IBM-MAIN subscribe / signoff / ar

Re: Reason for 2 digit years was Re: Instruction speeds

On Thu, 15 Aug 2019 00:46:00 -0500, Support, DUNNIT SYSTEMS LTD. wrote: >2 digit years I recall a shop who throughout the 70's implemented 1 digit >year dates across their files because of the precious cost and availability of >DASD space. In 1979, someone there took are hard look at what th

Re: Reason for 2 digit years was Re: Instruction speeds

: IBM-MAIN@LISTSERV.UA.EDU Subject: (External):Re: Reason for 2 digit years was Re: Instruction speeds > foremoms and foredads Some of us were there at the time. I've lost track of the number of times that I've criticized something only to be accused, decades later, of only having "

Re: Reason for 2 digit years was Re: Instruction speeds

If you don't like binarythen there's unsigned packed decimal. The code to convert between packed decimal and unsigned packed decimal is not exactly rocket science. -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 From: IBM Mainframe Discussion L

Re: Reason for 2 digit years was Re: Instruction speeds

http://mason.gmu.edu/~smetz3 From: IBM Mainframe Discussion List on behalf of Jesse 1 Robinson Sent: Wednesday, August 14, 2019 6:50 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Reason for 2 digit years was Re: Instruction speeds It's a modern day cottage indus

Re: Reason for 2 digit years was Re: Instruction speeds

> IBM 701 with 2048, later 4095 36 bit word ITYM 4096 The Williams Tube was one of those technologies that I was too young to know about, for which I am grateful. > two digit dates and Packed Decimal It's not that hard to used unsigned packed decimal for a three digit year in two bytes. --

Re: Reason for 2 digit years was Re: Instruction speeds

I worked at such company that had 1 digit years. The routine(s) to keep them straight across the decades I never did fully understand. OTOH, I also worked at a small Insurance company. The best (non) joke was when a client called regarding a new build discount she was getting on her house. T

Re: Reason for 2 digit years was Re: Instruction speeds

I interned in a catalog sales company in the marketing department in 1984. Used 1 digit year and purged sales data over 6 years old. On Thu, Aug 15, 2019 at 12:46 AM Support, DUNNIT SYSTEMS LTD. wrote: > > 2 digit years I recall a shop who throughout the 70's implemented 1 digit > year date

Re: Reason for 2 digit years was Re: Instruction speeds

2 digit years I recall a shop who throughout the 70's implemented 1 digit year dates across their files because of the precious cost and availability of DASD space. In 1979, someone there took are hard look at what the future held in store. So they did a full conversion project and changed a

Re: Reason for 2 digit years was Re: Instruction speeds

[Default] On 14 Aug 2019 15:50:58 -0700, in bit.listserv.ibm-main jesse1.robin...@sce.com (Jesse 1 Robinson) wrote: >It's a modern day cottage industry--or hobby maybe--to excoriate our foremoms >and foredads for the reckless choice they made decades ago to store dates in >two-digit format. Maki

Re: Reason for 2 digit years was Re: Instruction speeds

It's a modern day cottage industry--or hobby maybe--to excoriate our foremoms and foredads for the reckless choice they made decades ago to store dates in two-digit format. Making our lives miserable in the process. OTOH I remember reading some diary excerpts from US Civil War soldiers who routi