msdos/int16.c

   1 /*
   2  * DOS interrupt 16h handler
   3  */
   4
   5 #include <stdlib.h>
   6 #include <string.h>
   7 #include <unistd.h>
   8
   9 #include "config.h"
  10 #include "module.h"
  11 #include "console.h"
  12 #include "wincon.h"
  13 #include "debug.h"
  14 #include "winuser.h"
  15
  16 /**********************************************************************
  17  *          INT_Int16Handler
  18  *
  19  * Handler for int 16h (keyboard)
  20  *
  21  * NOTE:
  22  *
  23  *    KEYB.COM (DOS >3.2) adds functions to this interrupt, they are
  24  *    not currently listed here.
  25  */
  26
  27 void WINAPI INT_Int16Handler( CONTEXT *context )
  28 {
  29    switch AH_reg(context) {
  30
  31    case 0x00: /* Get Keystroke */
  32       /* Returns: AH = Scan code
  33                   AL = ASCII character */
  34       TRACE(int16, "Get Keystroke\n");
  35       CONSOLE_GetKeystroke(&AH_reg(context), &AL_reg(context));
  36       break;
  37
  38    case 0x01: /* Check for Keystroke */
  39       /* Returns: ZF set if no keystroke */
  40       /*          AH = Scan code */
  41       /*          AL = ASCII character */
  42       TRACE(int16, "Check for Keystroke\n");
  43       if (!CONSOLE_CheckForKeystroke(&AH_reg(context), &AL_reg(context)))
  44       {
  45           SET_ZFLAG(context);
  46       }
  47       else
  48       {
  49           RESET_ZFLAG(context);
  50       }
  51       break;
  52
  53    case 0x02: /* Get Shift Flags */
  54       AL_reg(context) = 0;
  55
  56       if (GetAsyncKeyState(VK_RSHIFT))
  57           AL_reg(context) |= 0x01;
  58       if (GetAsyncKeyState(VK_LSHIFT))
  59           AL_reg(context) |= 0x02;
  60       if (GetAsyncKeyState(VK_LCONTROL) || GetAsyncKeyState(VK_RCONTROL))
  61           AL_reg(context) |= 0x04;
  62       if (GetAsyncKeyState(VK_LMENU) || GetAsyncKeyState(VK_RMENU))
  63           AL_reg(context) |= 0x08;
  64       if (GetAsyncKeyState(VK_SCROLL))
  65           AL_reg(context) |= 0x10;
  66       if (GetAsyncKeyState(VK_NUMLOCK))
  67           AL_reg(context) |= 0x20;
  68       if (GetAsyncKeyState(VK_CAPITAL))
  69           AL_reg(context) |= 0x40;
  70       if (GetAsyncKeyState(VK_INSERT))
  71           AL_reg(context) |= 0x80;
  72       TRACE(int16, "Get Shift Flags: returning 0x%02x\n", AL_reg(context));
  73       break;
  74
  75    case 0x03: /* Set Typematic Rate and Delay */
  76       FIXME(int16, "Set Typematic Rate and Delay - Not Supported\n");
  77       break;
  78
  79    case 0x09: /* Get Keyboard Functionality */
  80       FIXME(int16, "Get Keyboard Functionality - Not Supported\n");
  81       /* As a temporary measure, say that "nothing" is supported... */
  82       AL_reg(context) = 0;
  83       break;
  84
  85    case 0x0a: /* Get Keyboard ID */
  86       FIXME(int16, "Get Keyboard ID - Not Supported\n");
  87       break;
  88
  89    case 0x10: /* Get Enhanced Keystroke */
  90       TRACE(int16, "Get Enhanced Keystroke - Partially supported\n");
  91       /* Returns: AH = Scan code
  92                   AL = ASCII character */
  93       CONSOLE_GetKeystroke(&AH_reg(context), &AL_reg(context));
  94       break;
  95
  96
  97    case 0x11: /* Check for Enhanced Keystroke */
  98       /* Returns: ZF set if no keystroke */
  99       /*          AH = Scan code */
 100       /*          AL = ASCII character */
 101       TRACE(int16, "Check for Enhanced Keystroke - Partially supported\n");
 102       if (!CONSOLE_CheckForKeystroke(&AH_reg(context), &AL_reg(context)))
 103       {
 104           SET_ZFLAG(context);
 105       }
 106       else
 107       {
 108           RESET_ZFLAG(context);
 109       }
 110       break;
 111
 112    case 0x12: /* Get Extended Shift States */
 113       FIXME(int16, "Get Extended Shift States - Not Supported\n");
 114       break;
 115
 116    default:
 117       FIXME(int16, "Unknown INT 16 function - 0x%x\n", AH_reg(context));
 118       break;
 119
 120    }
 121 }
 122