sja@swbatl.UUCP (9080) (03/14/89)
REPOST: 'wrong' .sig included ... sorry!
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.
--
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 |______________________|Geva_Apple-Maniac_Patz@cup.portal.com (03/24/89)
ProDOS stores its date in a slightly odd format. You can either use a MLI
call to get it, or try your luck with reading the actual memory locations.
The MLI call is GET_TIME, $82, and has no parameter list. The time is
stored with the hours in $BF93 (49043), and the minutes in $BF92 (49042).
Where things get just a little stickier is in the system date, which is
Sostored over two consecutive memory locations, $BF91 and $BF90 (49041 and
49040, respectively). It's stored as a 16-bit word in low-byte, high-byte
form, with the least significant 5 bits representing the day, the next
four bits representing the month, and the most significant seven bits
representing the year, like this:
$BF91 $BF90
5 4 3 2 1 0
YYYYYYYYYYYYYYMMMMMMMMDDDDDDDDD
Hope this helps,
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Geva
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