Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!apple!mattd
From: mattd@Apple.COM (Matt Deatherage)
Newsgroups: comp.sys.apple2
Subject: Re: Applesoft memory help
Message-ID: <53318@apple.Apple.COM>
Date: 24 May 91 22:52:22 GMT
References: <26276@know.pws.bull.com>
Organization: Apple Computer Inc., Cupertino, CA
Lines: 24

In article <26276@know.pws.bull.com> aq696@cleveland.Freenet.Edu (Charles Perlingiero) writes:
>
>First, the locations in ProDOS that contain the minute and the hour will
>not change while a program is running, why?  I wanted to have a clock
>routine in my program, but these locations (49042=minute, 49043=hour) do not
>update when the program is running.  Also, does anyone know if there is
>a second location?  I'm sure ProDOS reads the clock continuously, but how
>can I access it?
>
>| Charles Perlingiero                 | Interests: Apple II's & Guitars       |

It doesn't read the clock continuously -- to do so would be a waste of CPU
time because ProDOS only needs the time when a ProDOS call is made.  It updates
the time in the global page whenever a ProDOS MLI call is made.  In assembly,
the easiest thing to use is the GET_TIME call which does nothing but update
the time on the global page.  From BASIC, PRINT CHR$(4)"FLUSH" will accomplish
the same thing (even if no files are open).
-- 
============================================================================
Matt Deatherage, Developer Technical  | The opinions expressed herein are
Support, Apple Computer, Inc.         | not those of Apple Computer, and
Personal mail only, please.  Thanks.  | shame on you for thinking otherwise.
^^^^^^^^ Technical questions are not personal. Please post them instead.
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