git.oblomov.eu Git - wine/blob - miscemu/int13.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include "registers.h"
   4 #include "wine.h"
   5 #include "miscemu.h"
   6 #include "stddebug.h"
   7 /* #define DEBUG_INT */
   8 #include "debug.h"
   9
  10
  11 /**********************************************************************
  12  *          INT_Int13Handler
  13  *
  14  * Handler for int 13h (disk I/O).
  15  */
  16 void INT_Int13Handler( struct sigcontext_struct sigcontext )
  17 {
  18 #define context (&sigcontext)
  19     switch(AH)
  20     {
  21         case 0x00:                            /* RESET DISK SYSTEM     */
  22         case 0x04:                            /* VERIFY DISK SECTOR(S) */
  23                 AH = 0;
  24                 break;
  25
  26         case 0x05:                                     /* FORMAT TRACK */
  27                 AH = 0x0c;
  28                 SetCflag;
  29                 break;
  30
  31         case 0x06:             /* FORMAT TRACK AND SET BAD SECTOR FLAGS */
  32         case 0x07:             /* FORMAT DRIVE STARTING AT GIVEN TRACK  */
  33                 AH = 0x0c;
  34                 break;
  35
  36         case 0x08:                              /* GET DRIVE PARAMETERS  */
  37                 AH = (DL & 0x80) ? 0x07 : 0x01;
  38                 SetCflag;
  39                 break;
  40
  41         case 0x09:         /* INITIALIZE CONTROLLER WITH DRIVE PARAMETERS */
  42         case 0x0c:         /* SEEK TO CYLINDER                            */
  43         case 0x0d:         /* RESET HARD DISKS                            */
  44         case 0x10:         /* CHECK IF DRIVE READY                        */
  45         case 0x11:         /* RECALIBRATE DRIVE                           */
  46         case 0x14:         /* CONTROLLER INTERNAL DIAGNOSTIC              */
  47                 AH = 0;
  48                 break;
  49
  50         case 0x0e:                    /* READ SECTOR BUFFER (XT only)      */
  51         case 0x0f:                    /* WRITE SECTOR BUFFER (XT only)     */
  52         case 0x12:                    /* CONTROLLER RAM DIAGNOSTIC (XT,PS) */
  53         case 0x13:                    /* DRIVE DIAGNOSTIC (XT,PS)          */
  54                 AH = 0x01;
  55                 SetCflag;
  56                 break;
  57
  58         default:
  59                 INT_BARF( 0x13 );
  60     }
  61 #undef context
  62 }