board/MAI/bios_emulator/scitech/src/pm/tests/biosptr.c

   1 /****************************************************************************
   2 *
   3 *                   SciTech OS Portability Manager Library
   4 *
   5 *  ========================================================================
   6 *
   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
  11 *
  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.
  16 *
  17 *    The Original Code is Copyright (C) 1991-1998 SciTech Software, Inc.
  18 *
  19 *    The Initial Developer of the Original Code is SciTech Software, Inc.
  20 *    All Rights Reserved.
  21 *
  22 *  ========================================================================
  23 *
  24 * Language:     ANSI C
  25 * Environment:  any
  26 *
  27 * Description:  Test program to check the ability to manipulate the
  28 *               BIOS data area from protected mode using the PM
  29 *               library. Compile and link with the appropriate command
  30 *               line for your DOS extender.
  31 *
  32 *               Functions tested:   PM_getBIOSSelector()
  33 *                                   PM_getLong()
  34 *                                   PM_getByte()
  35 *                                   PM_getWord()
  36 *
  37 ****************************************************************************/
  38
  39 #include <stdlib.h>
  40 #include <stdio.h>
  41 #include "pmapi.h"
  42
  43 /* Macros to obtain values from the BIOS data area */
  44
  45 #define TICKS()     PM_getLong(bios+0x6C)
  46 #define KB_STAT     PM_getByte(bios+0x17)
  47 #define KB_HEAD     PM_getWord(bios+0x1A)
  48 #define KB_TAIL     PM_getWord(bios+0x1C)
  49
  50 /* Macros for working with the keyboard buffer */
  51
  52 #define KB_HIT()    (KB_HEAD != KB_TAIL)
  53 #define CTRL()      (KB_STAT & 4)
  54 #define SHIFT()     (KB_STAT & 2)
  55 #define ESC         0x1B
  56
  57 /* Selector for BIOS data area */
  58
  59 uchar *bios;
  60
  61 int main(void)
  62 {
  63     int c,done = 0;
  64
  65     printf("Program running in ");
  66     switch (PM_getModeType()) {
  67         case PM_realMode:
  68             printf("real mode.\n\n");
  69             break;
  70         case PM_286:
  71             printf("16 bit protected mode.\n\n");
  72             break;
  73         case PM_386:
  74             printf("32 bit protected mode.\n\n");
  75             break;
  76         }
  77
  78     bios = PM_getBIOSPointer();
  79     printf("Hit any key to test, Ctrl-Shift-Esc to quit\n");
  80     while (!done) {
  81         if (KB_HIT()) {
  82             c = PM_getch();
  83             if (c == 0) PM_getch();
  84             printf("TIME=%-8lX ST=%02X CHAR=%02X ", TICKS(), KB_STAT, c);
  85             printf("\n");
  86             if ((c == ESC) && SHIFT() && CTRL())/* Ctrl-Shift-Esc */
  87                 break;
  88             }
  89         }
  90
  91     return 0;
  92 }