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
  34     default:
  35         INT_BARF( context, 0x15 );
  36     }
  37 }