msdos/int15.c

   1 /*
   2  * BIOS interrupt 15h handler
   3  */
   4
   5 #include <stdlib.h>
   6 #include "miscemu.h"
   7 #include "debug.h"
   8
   9 DEFAULT_DEBUG_CHANNEL(int)
  10
  11
  12 /**********************************************************************
  13  *          INT_Int15Handler
  14  *
  15  * Handler for int 15h (old cassette interrupt).
  16  */
  17 void WINAPI INT_Int15Handler( CONTEXT *context )
  18 {
  19     switch(AH_reg(context))
  20     {
  21     case 0x88: /* get size of memory above 1 M */
  22         AX_reg(context) = 64;  /* FIXME: are 64K ok? */
  23         RESET_CFLAG(context);
  24         break;
  25
  26     case 0xc0: /* GET CONFIGURATION */
  27         if (ISV86(context)) /* real */
  28             ES_reg(context) = 0xf000;
  29         else
  30             ES_reg(context) = DOSMEM_BiosSysSeg;
  31         BX_reg(context) = 0xe6f5;
  32         AH_reg(context) = 0x0;
  33         RESET_CFLAG(context);
  34         break;
  35     case 0xc2:
  36         switch(AL_reg(context))
  37         {
  38         case 0x00: /* Enable-Disable Pointing Device (mouse) */
  39             /* BH = newstate, 00h = disabled 01h = enabled */
  40             switch(BH_reg(context))
  41             {
  42                 case 0x00:
  43                     FIXME(int, "Disable Pointing Device - not implemented\n");
  44                     break;
  45                 case 0x01:
  46                     FIXME(int, "Enable Pointing Device - not implemented\n");
  47                     break;
  48                 default:
  49                     INT_BARF( context, 0x15 );
  50                     break;
  51             }
  52             AH_reg(context) = 0x00; /* successful */
  53             break;
  54         case 0x02: /* Set Sampling Rate */
  55             /* BH = sampling rate */
  56             FIXME(int, "Set Sampling Rate - not implemented\n");
  57             AH_reg(context) = 0x00; /* successful */
  58             break;
  59         case 0x04: /* Get Pointing Device Type */
  60             FIXME(int, "Get Pointing Device Type - not implemented\n");
  61             BH_reg(context) = 0x01;/*Device id FIXME what is it suposed to be?*/
  62             break;
  63         default:
  64             INT_BARF( context, 0x15 );
  65         }
  66         break;
  67
  68     default:
  69         INT_BARF( context, 0x15 );
  70     }
  71 }