1 files changed, 115 insertions, 0 deletions
diff --git a/board/MAI/bios_emulator/scitech/src/pm/smx/ztimer.c b/board/MAI/bios_emulator/scitech/src/pm/smx/ztimer.c
new file mode 100644
index 0000000000..01e180bdca
--- /dev/null
+++ b/board/MAI/bios_emulator/scitech/src/pm/smx/ztimer.c
@@ -0,0 +1,115 @@
+/****************************************************************************
+*
+*                         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 SMX embedded systems development
+*
+* Description:  OS specific implementation for the Zen Timer functions.
+*     LZTimer not supported for smx (as needed for i486 processors), only
+*     ULZTimer is supported at this time.
+*
+****************************************************************************/
+
+/*---------------------------- Global smx variables -----------------------*/
+
+extern ulong      _cdecl etime;     /* elapsed time */
+extern ulong      _cdecl xticks_per_second(void);
+
+/*----------------------------- Implementation ----------------------------*/
+
+/* External assembler functions */
+
+void    _ASMAPI LZ_disable(void);
+void    _ASMAPI LZ_enable(void);
+
+
+/****************************************************************************
+REMARKS:
+Initialise the Zen Timer module internals.
+****************************************************************************/
+void __ZTimerInit(void)
+{
+}
+
+ulong reterr(void)
+{
+   PM_fatalError("Zen Timer not supported for smx.");
+   return(0);
+}
+
+/****************************************************************************
+REMARKS:
+Call the assembler Zen Timer functions to do the timing.
+****************************************************************************/
+#define __LZTimerOn(tm)     PM_fatalError("Zen Timer not supported for smx.")
+
+/****************************************************************************
+REMARKS:
+Call the assembler Zen Timer functions to do the timing.
+****************************************************************************/
+#define __LZTimerLap(tm)    reterr()
+
+/****************************************************************************
+REMARKS:
+Call the assembler Zen Timer functions to do the timing.
+****************************************************************************/
+#define __LZTimerOff(tm)    PM_fatalError("Zen Timer not supported for smx.")
+
+/****************************************************************************
+REMARKS:
+Call the assembler Zen Timer functions to do the timing.
+****************************************************************************/
+#define __LZTimerCount(tm)  reterr()
+
+/****************************************************************************
+REMARKS:
+Define the resolution of the long period timer as seconds per timer tick.
+****************************************************************************/
+#define ULZTIMER_RESOLUTION     (ulong)(1000000/xticks_per_second())
+
+/****************************************************************************
+REMARKS:
+Read the Long Period timer value from the smx timer tick.
+****************************************************************************/
+static ulong __ULZReadTime(void)
+{
+    ulong   ticks;
+    LZ_disable();            /* Turn of interrupts               */
+    ticks = etime;
+    LZ_enable();             /* Turn on interrupts again         */
+    return ticks;
+}
+
+/****************************************************************************
+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)
+{
+    if (finish < start)
+        finish += xticks_per_second() * 3600 *24;       /* Number of ticks in 24 hours      */
+    return finish - start;
+}