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+/****************************************************************************
+*
+* Ultra Long Period Timer
+*
+* ========================================================================
+*
+* The contents of this file are subject to the SciTech MGL Public
+* License Version 1.0 (the "License"); you may not use this file
+* except in compliance with the License. You may obtain a copy of
+* the License at http://www.scitechsoft.com/mgl-license.txt
+*
+* Software distributed under the License is distributed on an
+* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+* implied. See the License for the specific language governing
+* rights and limitations under the License.
+*
+* The Original Code is Copyright (C) 1991-1998 SciTech Software, Inc.
+*
+* The Initial Developer of the Original Code is SciTech Software, Inc.
+* All Rights Reserved.
+*
+* ========================================================================
+*
+* Language: ANSI C
+* Environment: *** TODO: ADD YOUR OS ENVIRONMENT NAME HERE ***
+*
+* Description: OS specific implementation for the Zen Timer functions.
+*
+****************************************************************************/
+
+/*----------------------------- Implementation ----------------------------*/
+
+/****************************************************************************
+REMARKS:
+Initialise the Zen Timer module internals.
+****************************************************************************/
+void _ZTimerInit(void)
+{
+ // TODO: Do any specific internal initialisation in here
+}
+
+/****************************************************************************
+REMARKS:
+Start the Zen Timer counting.
+****************************************************************************/
+static void _LZTimerOn(
+ LZTimerObject *tm)
+{
+ // TODO: Start the Zen Timer counting. This should be a macro if
+ // possible.
+}
+
+/****************************************************************************
+REMARKS:
+Compute the lap time since the timer was started.
+****************************************************************************/
+static ulong _LZTimerLap(
+ LZTimerObject *tm)
+{
+ // TODO: Compute the lap time between the current time and when the
+ // timer was started.
+ return 0;
+}
+
+/****************************************************************************
+REMARKS:
+Stop the Zen Timer counting.
+****************************************************************************/
+static void _LZTimerOff(
+ LZTimerObject *tm)
+{
+ // TODO: Stop the timer counting. Should be a macro if possible.
+}
+
+/****************************************************************************
+REMARKS:
+Compute the elapsed time in microseconds between start and end timings.
+****************************************************************************/
+static ulong _LZTimerCount(
+ LZTimerObject *tm)
+{
+ // TODO: Compute the elapsed time and return it. Always microseconds.
+ return 0;
+}
+
+/****************************************************************************
+REMARKS:
+Define the resolution of the long period timer as microseconds per timer tick.
+****************************************************************************/
+#define ULZTIMER_RESOLUTION 1
+
+/****************************************************************************
+REMARKS:
+Read the Long Period timer from the OS
+****************************************************************************/
+static ulong _ULZReadTime(void)
+{
+ // TODO: Read the long period timer from the OS. The resolution of this
+ // timer should be around 1/20 of a second for timing long
+ // periods if possible.
+}
+
+/****************************************************************************
+REMARKS:
+Compute the elapsed time from the BIOS timer tick. Note that we check to see
+whether a midnight boundary has passed, and if so adjust the finish time to
+account for this. We cannot detect if more that one midnight boundary has
+passed, so if this happens we will be generating erronous results.
+****************************************************************************/
+ulong _ULZElapsedTime(ulong start,ulong finish)
+{ return finish - start; }
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