Description: Apple IIGS: How to Access the Clock
Header: Apple IIGS: How to Access the Clock


 This article last reviewed: 14 July 1989

 TOPIC ---------------------------------------------

 I have a customer using Z-BASIC on his Apple IIGS under ProDOS, running as
 an Apple IIe.  Although there no are toolbox calls for accessing the Apple
 IIGS clock from Z-BASIC, is there a way to do this from Z-BASIC with PEEKS
 and POKES or a machine language call?

 DISCUSSION ---------------------------------------------

 The preferred method is to use the ProDOS GET_TIME call.  Note: You need
 ProDOS 8 version 1.2 or later to get the time on the Apple IIGS.

 This method works on any Apple II running under ProDOS and with most Apple
 II-compatible clocks (because they all come with ProDOS patch routines).
 More information on the format of the GET_TIME call and other ProDOS
 commands is in the ProDOS Technical Reference Manual.  The GET_TIME call is
 documented on page 71.  Additional information is on page 99 and pages 104
 through 106.

 When the GET_TIME routine is called, the system date and time are placed
 into the documented locations.  Using PEEKs, the data in those location can
 be extracted.
 Copyright 1989 Apple Computer, Inc.
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