1 files changed, 85 insertions, 0 deletions
diff --git a/board/MAI/bios_emulator/scitech/src/pm/tests/altcrit.c b/board/MAI/bios_emulator/scitech/src/pm/tests/altcrit.c
new file mode 100644
index 0000000000..c5390f68a9
--- /dev/null
+++ b/board/MAI/bios_emulator/scitech/src/pm/tests/altcrit.c
@@ -0,0 +1,85 @@
+/****************************************************************************
+*
+*                   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
+*               critical error handler.
+*
+*               Functions tested:   PM_installCriticalHandler()
+*                                   PM_criticalError()
+*                                   PM_restoreCriticalHandler()
+*
+*
+****************************************************************************/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include "pmapi.h"
+
+volatile uint criticalError = false;
+volatile uint axValue;
+volatile uint diValue;
+
+#pragma off (check_stack)           /* No stack checking under Watcom   */
+
+uint PMAPI criticalHandler(uint axVal,uint diVal)
+{
+    criticalError = true;
+    axValue = axVal;
+    diValue = diVal;
+    return 3;       /* Tell MS-DOS to fail the operation */
+}
+
+int main(void)
+{
+    FILE    *f;
+
+    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;
+        }
+
+    PM_installAltCriticalHandler(criticalHandler);
+    printf("Critical Error handler installed - trying to read from A: drive...\n");
+    f = fopen("a:\bog.bog","rb");
+    if (f) fclose(f);
+    if (criticalError) {
+        printf("Critical error occured on INT 21h function %02X!\n",
+            axValue >> 8);
+        }
+    else
+        printf("Critical error was not caught!\n");
+    PM_restoreCriticalHandler();
+    return 0;
+}