Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!WPI.BITNET!GREYELF
From: GREYELF@WPI.BITNET
Newsgroups: comp.sys.apple
Subject: date
Message-ID: <8903212307.AA06735@wpi>
Date: 21 Mar 89 23:07:30 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 41


>I'm trying to help a friend read system date/time of an A.E.
>TimeMaster card and Manx (Aztec) C compiler.  They don't have any
>ProDos manuals, Apple programming experience, etc., neither do I.

>Does anyone know where the date/time info is kept (system time) in
>memory with ProDos?  In other words, _where_ to read the clock?  The
>date command with the Manx 'shell' returns everything but the seconds.
>Is that all ProDos returns?

>Any/all help appreciated.

In answer to your questions, the current minute is kept in $BF92,
the current hour is kept in $BF93, and the day month and year are
encoded as follows:

        7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
DATE:  | year        | month |  day    |
         $BF91             $BF90

That is, the year is stored in the upper 7 bits of address $BF91,
the month is stored in the lowest bit of $BF91, and the upper
two bits of $BF90, and the day is stored in the lower 5 bits of
$BF90.

I help people too guys.

>--
>Bruce Davis - SWBT - Advanced Technology Laboratory ------------------------
>1010 Pine St. - Room 502 - St. Louis. MO. 63101.    |    May the source    |
>UUCP: : pyramid, uunet, bellcore :...!swbatl!bdd    |    be with you...    |
>PHON: 314-235-0709 FAX: 314-235-5797               |______________________|

--
Michael J Pender Jr  Box 1942 c/o W.P.I.
greyelf@wpi.bitnet   100 Institute Rd.
greyelf@wpi.wpi.com  Worcester, Ma 01609
I wrote SHELL, please send bug reports to me.

P.S.  Bruce, if you take the tab characters out and replace them with
spaces, your signiature should come out right.