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- Path: sparky!uunet!pipex!warwick!uknet!brunel!ee91mds2
- From: ee91mds2@brunel.ac.uk (Mark D Smith)
- Newsgroups: comp.sys.acorn.tech
- Subject: Re: real time and IIC
- Message-ID: <BxEEC3.2xM@brunel.ac.uk>
- Date: 8 Nov 92 12:50:27 GMT
- Organization: Brunel University, West London, UK
- Lines: 31
-
-
- In article <1992Nov5.192740.23514@cs.nott.ac.uk> Simon Burrows writes:
-
- >In article <Bx8x68.3ID@dcs.ed.ac.uk> gst@dcs.ed.ac.uk (George Taylor) writes:
- >>I would have thought that the newer machines might not suffer from this
- >>problem. An A3010 in Dixons suffered more severe symptoms though I didn't
- >>have the operrtunity to look at it in detail.
- >
- >Why didn't you get the opportunity? Were you chucked out of the shop for
- >damaging one of their computers..? Doesn't sound a good idea.
-
- This sounds a rather odd problem, why should the RTC only stop counting when
- it is being powered from the battery rather than the mains? Obviously, there
- is still battery power to the RTC, otherwise it would lose the time
- completely (possibly be reset to Jan 1st 1990). Sounds to me like it is
- something that has been purposely built in to the RTC chip for some reason,
- and that there must be some way (using IIC_Control) of restoring normal
- operation, possibly to keep a record of the total length of time a machine
- has been in use? Obviously this 'function' is not intended to be used on the
- Arc.
-
- But why should the effect be 'more severe' on an A3010? (I assume the same
- RTC hardware is used)
-
- --
- -------------------------------------------------------------------------------
- | M M AAA RRRR K K Janet email: ee91mds2@brunel.ac.uk |
- | MM MM A A R R K K Subject: Microelectronic Systems Design |
- | M MM M AAAAA RRRR KK Establishment: Brunel University, U.K. |
- | M M A A R R K K |
- | M M A A R RR K K |
-