apps/calc/main.c

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2007  Tomas 'ZeXx86' Jedrzejek (zexx86@gmail.com)
   4  *
   5  *  This program is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19
  20 #include <stdio.h>
  21 #include <string.h>
  22 #include <stdlib.h>
  23
  24 #define         ESC     1
  25
  26 void write (const char *buf, unsigned l)
  27 {
  28         unsigned i;
  29         for (i = 0; i < l; i ++)
  30                 putch (buf[i]);
  31 }
  32
  33 unsigned key_pressed (int keycode)
  34 {
  35         int scancode = getkey ();
  36
  37         if (scancode == keycode)
  38                 return 1;
  39
  40         if (scancode == keycode+128)
  41                 return 2;
  42         else
  43                 return 0;
  44 }
  45
  46
  47
  48 int main ()
  49 {
  50         cls ();
  51
  52         /*write (, 20);
  53
  54 */
  55
  56         char *addr = (char *) 0x9000;
  57         strcpy (addr, "Prdy prdy\n");
  58
  59         puts (addr);
  60
  61         unsigned char key = 0;
  62         while (1) {
  63                 if (key_pressed (ESC))
  64                         break;
  65
  66                 key = getch ();
  67
  68                 putch (key);
  69
  70                 schedule ();
  71         }
  72
  73         exit (1);
  74
  75         return 0;
  76 }