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 DEFAULT_DEBUG_CHANNEL(int16)
  17
  18 /**********************************************************************
  19  *          INT_Int16Handler
  20  *
  21  * Handler for int 16h (keyboard)
  22  *
  23  * NOTE:
  24  *
  25  *    KEYB.COM (DOS >3.2) adds functions to this interrupt, they are
  26  *    not currently listed here.
  27  */
  28
  29 void WINAPI INT_Int16Handler( CONTEXT *context )
  30 {
  31    switch AH_reg(context) {
  32
  33    case 0x00: /* Get Keystroke */
  34       /* Returns: AH = Scan code
  35                   AL = ASCII character */
  36       TRACE(int16, "Get Keystroke\n");
  37       CONSOLE_GetKeystroke(&AH_reg(context), &AL_reg(context));
  38       break;
  39
  40    case 0x01: /* Check for Keystroke */
  41       /* Returns: ZF set if no keystroke */
  42       /*          AH = Scan code */
  43       /*          AL = ASCII character */
  44       TRACE(int16, "Check for Keystroke\n");
  45       if (!CONSOLE_CheckForKeystroke(&AH_reg(context), &AL_reg(context)))
  46       {
  47           SET_ZFLAG(context);
  48       }
  49       else
  50       {
  51           RESET_ZFLAG(context);
  52       }
  53       break;
  54
  55    case 0x02: /* Get Shift Flags */
  56       AL_reg(context) = 0;
  57
  58       if (GetAsyncKeyState(VK_RSHIFT))
  59           AL_reg(context) |= 0x01;
  60       if (GetAsyncKeyState(VK_LSHIFT))
  61           AL_reg(context) |= 0x02;
  62       if (GetAsyncKeyState(VK_LCONTROL) || GetAsyncKeyState(VK_RCONTROL))
  63           AL_reg(context) |= 0x04;
  64       if (GetAsyncKeyState(VK_LMENU) || GetAsyncKeyState(VK_RMENU))
  65           AL_reg(context) |= 0x08;
  66       if (GetAsyncKeyState(VK_SCROLL))
  67           AL_reg(context) |= 0x10;
  68       if (GetAsyncKeyState(VK_NUMLOCK))
  69           AL_reg(context) |= 0x20;
  70       if (GetAsyncKeyState(VK_CAPITAL))
  71           AL_reg(context) |= 0x40;
  72       if (GetAsyncKeyState(VK_INSERT))
  73           AL_reg(context) |= 0x80;
  74       TRACE(int16, "Get Shift Flags: returning 0x%02x\n", AL_reg(context));
  75       break;
  76
  77    case 0x03: /* Set Typematic Rate and Delay */
  78       FIXME(int16, "Set Typematic Rate and Delay - Not Supported\n");
  79       break;
  80
  81    case 0x09: /* Get Keyboard Functionality */
  82       FIXME(int16, "Get Keyboard Functionality - Not Supported\n");
  83       /* As a temporary measure, say that "nothing" is supported... */
  84       AL_reg(context) = 0;
  85       break;
  86
  87    case 0x0a: /* Get Keyboard ID */
  88       FIXME(int16, "Get Keyboard ID - Not Supported\n");
  89       break;
  90
  91    case 0x10: /* Get Enhanced Keystroke */
  92       TRACE(int16, "Get Enhanced Keystroke - Partially supported\n");
  93       /* Returns: AH = Scan code
  94                   AL = ASCII character */
  95       CONSOLE_GetKeystroke(&AH_reg(context), &AL_reg(context));
  96       break;
  97
  98
  99    case 0x11: /* Check for Enhanced Keystroke */
 100       /* Returns: ZF set if no keystroke */
 101       /*          AH = Scan code */
 102       /*          AL = ASCII character */
 103       TRACE(int16, "Check for Enhanced Keystroke - Partially supported\n");
 104       if (!CONSOLE_CheckForKeystroke(&AH_reg(context), &AL_reg(context)))
 105       {
 106           SET_ZFLAG(context);
 107       }
 108       else
 109       {
 110           RESET_ZFLAG(context);
 111       }
 112       break;
 113
 114    case 0x12: /* Get Extended Shift States */
 115       FIXME(int16, "Get Extended Shift States - Not Supported\n");
 116       break;
 117
 118    default:
 119       FIXME(int16, "Unknown INT 16 function - 0x%x\n", AH_reg(context));
 120       break;
 121
 122    }
 123 }
 124