msdos/int15.c

   1 /*
   2  * BIOS interrupt 15h handler
   3  */
   4
   5 #include <stdlib.h>
   6 #include "miscemu.h"
   7 #include "debugtools.h"
   8
   9 DEFAULT_DEBUG_CHANNEL(int);
  10
  11
  12 /**********************************************************************
  13  *          INT_Int15Handler
  14  *
  15  * Handler for int 15h
  16  */
  17 void WINAPI INT_Int15Handler( CONTEXT86 *context )
  18 {
  19     switch(AH_reg(context))
  20     {
  21     case 0x84: /* read joystick information */
  22         FIXME("Read joystick information not implemented\n");
  23
  24         /* FIXME: report status as if no game port exists */
  25         switch(DX_reg(context))
  26         {
  27         case 0x0: /* read joystick switches */
  28             AL_reg(context) = 0x0; /* all switches open */
  29             break;
  30         case 0x1: /* read joystick position */
  31             AX_reg(context) = 0x0;
  32             BX_reg(context) = 0x0;
  33             CX_reg(context) = 0x0;
  34             DX_reg(context) = 0x0;
  35             break;
  36         default:
  37             INT_BARF( context, 0x15 );
  38             break;
  39         }
  40
  41         RESET_CFLAG(context);
  42
  43         break;
  44
  45     case 0x88: /* get size of memory above 1 M */
  46         AX_reg(context) = 64;  /* FIXME: are 64K ok? */
  47         RESET_CFLAG(context);
  48         break;
  49
  50     case 0xc0: /* GET CONFIGURATION */
  51         if (ISV86(context)) /* real */
  52             context->SegEs = 0xf000;
  53         else
  54             context->SegEs = DOSMEM_BiosSysSeg;
  55         BX_reg(context) = 0xe6f5;
  56         AH_reg(context) = 0x0;
  57         RESET_CFLAG(context);
  58         break;
  59     case 0xc2:
  60         switch(AL_reg(context))
  61         {
  62         case 0x00: /* Enable-Disable Pointing Device (mouse) */
  63             /* BH = newstate, 00h = disabled 01h = enabled */
  64             switch(BH_reg(context))
  65             {
  66                 case 0x00:
  67                     FIXME("Disable Pointing Device - not implemented\n");
  68                     break;
  69                 case 0x01:
  70                     FIXME("Enable Pointing Device - not implemented\n");
  71                     break;
  72                 default:
  73                     INT_BARF( context, 0x15 );
  74                     break;
  75             }
  76             AH_reg(context) = 0x00; /* successful */
  77             break;
  78         case 0x02: /* Set Sampling Rate */
  79             /* BH = sampling rate */
  80             FIXME("Set Sampling Rate - not implemented\n");
  81             AH_reg(context) = 0x00; /* successful */
  82             break;
  83         case 0x04: /* Get Pointing Device Type */
  84             FIXME("Get Pointing Device Type - not implemented\n");
  85             BH_reg(context) = 0x01;/*Device id FIXME what is it supposed to be?*/
  86             break;
  87         default:
  88             INT_BARF( context, 0x15 );
  89         }
  90         break;
  91
  92     default:
  93         INT_BARF( context, 0x15 );
  94     }
  95 }