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diff --git a/board/MAI/bios_emulator/scitech/src/pm/vdd/ztimer.c b/board/MAI/bios_emulator/scitech/src/pm/vdd/ztimer.c
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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: 32-bit OS/2 VDD
+*
+* Description: OS specific implementation for the Zen Timer functions.
+*
+****************************************************************************/
+
+/*---------------------------- Global variables ---------------------------*/
+
+static ulong frequency = 1193180;
+
+/*----------------------------- Implementation ----------------------------*/
+
+/****************************************************************************
+REMARKS:
+Initialise the Zen Timer module internals.
+****************************************************************************/
+#define __ZTimerInit()
+
+/****************************************************************************
+REMARKS:
+Call the assembler Zen Timer functions to do the timing.
+****************************************************************************/
+#define __LZTimerOn(tm) VTD_Get_Real_Time(&tm->start.high,&tm->start.low)
+
+/****************************************************************************
+REMARKS:
+Call the assembler Zen Timer functions to do the timing.
+****************************************************************************/
+static ulong __LZTimerLap(
+ LZTimerObject *tm)
+{
+ CPU_largeInteger lap,count;
+ VTD_Get_Real_Time(&lap.high,&lap.low);
+ _CPU_diffTime64(&tm->start,&lap,&count);
+ return _CPU_calcMicroSec(&count,frequency);
+}
+
+/****************************************************************************
+REMARKS:
+Call the assembler Zen Timer functions to do the timing.
+****************************************************************************/
+#define __LZTimerOff(tm) VTD_Get_Real_Time(&tm->end.high,&tm->end.low)
+
+/****************************************************************************
+REMARKS:
+Call the assembler Zen Timer functions to do the timing.
+****************************************************************************/
+static ulong __LZTimerCount(
+ LZTimerObject *tm)
+{
+ CPU_largeInteger tmCount;
+ _CPU_diffTime64(&tm->start,&tm->end,&tmCount);
+ return _CPU_calcMicroSec(&tmCount,frequency);
+}
+
+/****************************************************************************
+REMARKS:
+Define the resolution of the long period timer as microseconds per timer tick.
+****************************************************************************/
+#define ULZTIMER_RESOLUTION 1000
+
+/****************************************************************************
+REMARKS:
+Read the Long Period timer value from the BIOS timer tick.
+****************************************************************************/
+static ulong __ULZReadTime(void)
+{
+ return VDHQuerySysValue(0, VDHGSV_MSECSBOOT);
+}
+
+/****************************************************************************
+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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