1 /****************************************************************************
3 * SciTech OS Portability Manager Library
5 * ========================================================================
7 * The contents of this file are subject to the SciTech MGL Public
8 * License Version 1.0 (the "License"); you may not use this file
9 * except in compliance with the License. You may obtain a copy of
10 * the License at http://www.scitechsoft.com/mgl-license.txt
12 * Software distributed under the License is distributed on an
13 * "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
14 * implied. See the License for the specific language governing
15 * rights and limitations under the License.
17 * The Original Code is Copyright (C) 1991-1998 SciTech Software, Inc.
19 * The Initial Developer of the Original Code is SciTech Software, Inc.
20 * All Rights Reserved.
22 * ========================================================================
28 * Description: Test program to check the ability to install a C based
29 * control C/break interrupt handler. Note that this
30 * alternate version does not work with all extenders.
32 * Functions tested: PM_installAltBreakHandler()
33 * PM_restoreBreakHandler()
36 ****************************************************************************/
42 volatile int breakHit = false;
43 volatile int ctrlCHit = false;
45 #pragma off (check_stack) /* No stack checking under Watcom */
47 void PMAPI breakHandler(uint bHit)
57 printf("Program running in ");
58 switch (PM_getModeType()) {
60 printf("real mode.\n\n");
63 printf("16 bit protected mode.\n\n");
66 printf("32 bit protected mode.\n\n");
70 PM_installAltBreakHandler(breakHandler);
71 printf("Control C/Break interrupt handler installed\n");
74 printf("Code termimated with Ctrl-C.\n");
78 printf("Code termimated with Ctrl-Break.\n");
81 if (PM_kbhit() && PM_getch() == 0x1B) {
82 printf("No break code detected!\n");
85 printf("Hit Ctrl-C or Ctrl-Break to exit!\n");
88 PM_restoreBreakHandler();