Year 2000 (Y2K) Embedded Systems & Infrastructure Problem Message Board

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Technology Stocks : Year 2000 (Y2K) Embedded Systems & Infrastructure Problem

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To: John Mansfield who wrote (97)	2/20/1998 2:10:00 PM
From: John Mansfield	Read Replies (2) of 618

Frequently asked Embeddeds Q/A 'Q: 'If there is no way you could enter a date, or the system receive a date through its interfaces and if the system could operate normally after a power failures (pulling the plug out and disconnecting any batteries on it) Then can we be sure it does not have an year 2000 problem? A: 'The answer to this is categorically NO' 'Many of these assumptions are being made by individuals who do not fully understand the design and programming of "Embedded Software based Systems".' ------ Date: Thu, 19 Feb 1998 13:17:26 +0000 Message-ID: <000271EE.001268@ccgate.aeat.co.uk> From: david.spinks@aeat.co.uk (David \|Spinks) Subject: Re: Embedded Systems - False Assumptions To: year2000-discuss@year2000.com Dear All The answer to this is categorically NO... there are a number of conditions which enable dates or date related or date generated errors to enter a "system" and cause a failure. Please do not forget that some date and real time chips have their own power source which can preserve data for up to 10 years. Removal of batteries or power does not proves very little as far as this problem is concerned. Many of these assumptions are being made by individuals who do not fully understand the design and programming of "Embedded Software based Systems". Experience shows that equipment may be placed into other modes of operation (calibration and maintenance modes being two of the most common) other than normal operation mode. Dates may enter systems when under repair or being calibrated. The bottom line is that organisations who operate safety related equipment will need to ensure that these systems will not fail due to a date related problem. Testing is only one option but if your supplier cannot demonstrate his testing to you then you may have to employ specialists to do this work. It is not something most companies can do themselves - remember testing may present a higher risk than the Y2K failure itself... I suggest a starting point for understanding these issues might be found by looking at the UK IEE web site which has some of the best guidance available. For organisations with real problems I would be happy to assist directly. David Spinks Business Development Manager Warrington WA3 6AT ---- ********************************************************** Embedded Software - Year 2000 Consultancy ********************************************************** _____________________________ Reply Separator From: "Yastreboff, Michael MM" <Yastreboff.Michael.MM@bhp.com.au> To: "'year2000-discuss@year2000.com'" <year2000-discuss@year2000.com> Subject: RE: Embedded Systems: Fire Sprinkler Control Systems Date: Wed, 18 Feb 1998 17:04:01 +1100 Gentlemen: Lets try this statement: If there is no way you could enter a date, or the system receive a date through its interfaces and if the system could operate normally after a power failures (pulling the plug out and disconnecting any batteries on it) Then can we be sure it does not have an year 2000 problem? -------------

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