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