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 "debug.h"
  11
  12 #include "ldt.h"
  13 #include "drive.h"
  14 #include "msdos.h"
  15 #include "miscemu.h"
  16 #include "module.h"
  17 #include "console.h"
  18
  19 /**********************************************************************
  20  *          INT_Int16Handler
  21  *
  22  * Handler for int 16h (keyboard)
  23  *
  24  * NOTE:
  25  *
  26  *    KEYB.COM (DOS >3.2) adds functions to this interrupt, they are
  27  *    not currently listed here.
  28  */
  29
  30 void WINAPI INT_Int16Handler( CONTEXT *context )
  31 {
  32    switch AH_reg(context) {
  33
  34    case 0x00: /* Get Keystroke */
  35       /* Returns: AH = Scan code
  36                   AL = ASCII character */
  37       TRACE(int16, "Get Keystroke\n");
  38       CONSOLE_GetKeystroke(&AH_reg(context), &AL_reg(context));
  39       break;
  40
  41    case 0x01: /* Check for Keystroke */
  42       /* Returns: ZF set if no keystroke */
  43       /*          AH = Scan code */
  44       /*          AL = ASCII character */
  45       TRACE(int16, "Check for Keystroke\n");
  46       if (!CONSOLE_CheckForKeystroke(&AH_reg(context), &AL_reg(context)))
  47       {
  48           SET_ZFLAG(context);
  49       }
  50       else
  51       {
  52           RESET_ZFLAG(context);
  53       }
  54       break;
  55
  56    case 0x02: /* Get Shift Flags */
  57       FIXME(int16, "Get Shift Flags - Not Supported\n");
  58       break;
  59
  60    case 0x03: /* Set Typematic Rate and Delay */
  61       FIXME(int16, "Set Typematic Rate and Delay - Not Supported\n");
  62       break;
  63
  64    case 0x09: /* Get Keyboard Functionality */
  65       FIXME(int16, "Get Keyboard Functionality - Not Supported\n");
  66       /* As a temporary measure, say that "nothing" is supported... */
  67       AL_reg(context) = 0;
  68       break;
  69
  70    case 0x0a: /* Get Keyboard ID */
  71       FIXME(int16, "Get Keyboard ID - Not Supported\n");
  72       break;
  73
  74    case 0x10: /* Get Enhanced Keystroke */
  75       FIXME(int16, "Get Enhanced Keystroke - Not Supported\n");
  76       break;
  77
  78    case 0x11: /* Check for Enhanced Keystroke */
  79       FIXME(int16, "Check for Enhanced Keystroke - Not Supported\n");
  80       break;
  81
  82    case 0x12: /* Get Extended Shift States */
  83       FIXME(int16, "Get Extended Shift States - Not Supported\n");
  84       break;
  85
  86    default:
  87       FIXME(int16, "Unknown INT 16 function - 0x%x\n", AH_reg(context));
  88       break;
  89
  90    }
  91 }
  92