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
  15 /**********************************************************************
  16  *          INT_Int16Handler
  17  *
  18  * Handler for int 16h (keyboard)
  19  *
  20  * NOTE:
  21  *
  22  *    KEYB.COM (DOS >3.2) adds functions to this interrupt, they are
  23  *    not currently listed here.
  24  */
  25
  26 void WINAPI INT_Int16Handler( CONTEXT *context )
  27 {
  28    switch AH_reg(context) {
  29
  30    case 0x00: /* Get Keystroke */
  31       /* Returns: AH = Scan code
  32                   AL = ASCII character */
  33       TRACE(int16, "Get Keystroke\n");
  34       CONSOLE_GetKeystroke(&AH_reg(context), &AL_reg(context));
  35       break;
  36
  37    case 0x01: /* Check for Keystroke */
  38       /* Returns: ZF set if no keystroke */
  39       /*          AH = Scan code */
  40       /*          AL = ASCII character */
  41       TRACE(int16, "Check for Keystroke\n");
  42       if (!CONSOLE_CheckForKeystroke(&AH_reg(context), &AL_reg(context)))
  43       {
  44           SET_ZFLAG(context);
  45       }
  46       else
  47       {
  48           RESET_ZFLAG(context);
  49       }
  50       break;
  51
  52    case 0x02: /* Get Shift Flags */
  53       FIXME(int16, "Get Shift Flags - Not Supported\n");
  54       break;
  55
  56    case 0x03: /* Set Typematic Rate and Delay */
  57       FIXME(int16, "Set Typematic Rate and Delay - Not Supported\n");
  58       break;
  59
  60    case 0x09: /* Get Keyboard Functionality */
  61       FIXME(int16, "Get Keyboard Functionality - Not Supported\n");
  62       /* As a temporary measure, say that "nothing" is supported... */
  63       AL_reg(context) = 0;
  64       break;
  65
  66    case 0x0a: /* Get Keyboard ID */
  67       FIXME(int16, "Get Keyboard ID - Not Supported\n");
  68       break;
  69
  70    case 0x10: /* Get Enhanced Keystroke */
  71       TRACE(int16, "Get Enhanced Keystroke - Partially supported\n");
  72       /* Returns: AH = Scan code
  73                   AL = ASCII character */
  74       CONSOLE_GetKeystroke(&AH_reg(context), &AL_reg(context));
  75       break;
  76
  77
  78    case 0x11: /* Check for Enhanced Keystroke */
  79       /* Returns: ZF set if no keystroke */
  80       /*          AH = Scan code */
  81       /*          AL = ASCII character */
  82       TRACE(int16, "Check for Enhanced Keystroke - Partially supported\n");
  83       if (!CONSOLE_CheckForKeystroke(&AH_reg(context), &AL_reg(context)))
  84       {
  85           SET_ZFLAG(context);
  86       }
  87       else
  88       {
  89           RESET_ZFLAG(context);
  90       }
  91       break;
  92
  93    case 0x12: /* Get Extended Shift States */
  94       FIXME(int16, "Get Extended Shift States - Not Supported\n");
  95       break;
  96
  97    default:
  98       FIXME(int16, "Unknown INT 16 function - 0x%x\n", AH_reg(context));
  99       break;
 100
 101    }
 102 }
 103