1 files changed, 94 insertions, 0 deletions
diff --git a/board/MAI/bios_emulator/scitech/src/pm/tests/tick.c b/board/MAI/bios_emulator/scitech/src/pm/tests/tick.c
new file mode 100644
index 0000000000..ee1014fb9f
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+++ b/board/MAI/bios_emulator/scitech/src/pm/tests/tick.c
@@ -0,0 +1,94 @@
+/****************************************************************************
+*
+*                   SciTech OS Portability Manager Library
+*
+*  ========================================================================
+*
+*    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:  any
+*
+* Description:  Test program to check the ability to install a C based
+*               timer interrupt handler.
+*
+*               Functions tested:   PM_setTimerHandler()
+*                                   PM_chainPrevTimer();
+*                                   PM_restoreTimerHandler()
+*
+****************************************************************************/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include "pmapi.h"
+
+volatile long count = 0;
+
+#pragma off (check_stack)           /* No stack checking under Watcom   */
+
+void PMAPI timerHandler(void)
+{
+    PM_chainPrevTimer();        /* Chain to previous handler */
+    count++;
+}
+
+int main(void)
+{
+    long            oldCount;
+    PM_lockHandle   lh;
+
+    printf("Program running in ");
+    switch (PM_getModeType()) {
+        case PM_realMode:
+            printf("real mode.\n\n");
+            break;
+        case PM_286:
+            printf("16 bit protected mode.\n\n");
+            break;
+        case PM_386:
+            printf("32 bit protected mode.\n\n");
+            break;
+        }
+
+    /* Install our timer handler and lock handler pages in memory. It is
+     * difficult to get the size of a function in C, but we know our
+     * function is well less than 100 bytes (and an entire 4k page will
+     * need to be locked by the server anyway).
+     */
+    PM_lockCodePages((__codePtr)timerHandler,100,&lh);
+    PM_lockDataPages((void*)&count,sizeof(count),&lh);
+    PM_installBreakHandler();           /* We *DONT* want Ctrl-Breaks! */
+    PM_setTimerHandler(timerHandler);
+    printf("Timer interrupt handler installed - Hit ESC to exit\n");
+    oldCount = count;
+    while (1) {
+        if (PM_kbhit() && (PM_getch() == 0x1B))
+            break;
+        if (count != oldCount) {
+            printf("Tick, Tock: %ld\n", count);
+            oldCount = count;
+            }
+        }
+
+    PM_restoreTimerHandler();
+    PM_restoreBreakHandler();
+    PM_unlockDataPages((void*)&count,sizeof(count),&lh);
+    PM_unlockCodePages((__codePtr)timerHandler,100,&lh);
+    printf("Timer handler was called %ld times\n", count);
+    return 0;
+}