dlls/winedos/int1a.c

   1 /*
   2  * BIOS interrupt 1ah handler
   3  *
   4  * Copyright 1993 Erik Bos
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22 #include "miscemu.h"
  23 #include "wine/debug.h"
  24 #include "dosexe.h"
  25
  26 WINE_DEFAULT_DEBUG_CHANNEL(int);
  27
  28 #define BCD_TO_BIN(x) ((x&15) + (x>>4)*10)
  29 #define BIN_TO_BCD(x) ((x%10) + ((x/10)<<4))
  30
  31
  32 /**********************************************************************
  33  *         DOSVM_Int1aHandler
  34  *
  35  * Handler for int 1ah.
  36  */
  37 void WINAPI DOSVM_Int1aHandler( CONTEXT86 *context )
  38 {
  39     switch(AH_reg(context))
  40     {
  41     case 0x00: /* GET SYSTEM TIME */
  42         {
  43             BIOSDATA *data = DOSVM_BiosData();
  44             SET_CX( context, HIWORD(data->Ticks) );
  45             SET_DX( context, LOWORD(data->Ticks) );
  46             SET_AL( context, 0 ); /* FIXME: midnight flag is unsupported */
  47             TRACE( "GET SYSTEM TIME - ticks=%ld\n", data->Ticks );
  48         }
  49         break;
  50
  51     case 0x01: /* SET SYSTEM TIME */
  52         FIXME( "SET SYSTEM TIME - not allowed\n" );
  53         break;
  54
  55     case 0x02: /* GET REAL-TIME CLOCK TIME */
  56         TRACE( "GET REAL-TIME CLOCK TIME\n" );
  57         {
  58             SYSTEMTIME systime;
  59             GetLocalTime( &systime );
  60             SET_CH( context, BIN_TO_BCD(systime.wHour) );
  61             SET_CL( context, BIN_TO_BCD(systime.wMinute) );
  62             SET_DH( context, BIN_TO_BCD(systime.wSecond) );
  63             SET_DL( context, 0 ); /* FIXME: assume no daylight saving */
  64             RESET_CFLAG(context);
  65         }
  66         break;
  67
  68     case 0x03: /* SET REAL-TIME CLOCK TIME */
  69         FIXME( "SET REAL-TIME CLOCK TIME - not allowed\n" );
  70         break;
  71
  72     case 0x04: /* GET REAL-TIME CLOCK DATE */
  73         TRACE( "GET REAL-TIME CLOCK DATE\n" );
  74         {
  75             SYSTEMTIME systime;
  76             GetLocalTime( &systime );
  77             SET_CH( context, BIN_TO_BCD(systime.wYear / 100) );
  78             SET_CL( context, BIN_TO_BCD(systime.wYear % 100) );
  79             SET_DH( context, BIN_TO_BCD(systime.wMonth) );
  80             SET_DL( context, BIN_TO_BCD(systime.wDay) );
  81             RESET_CFLAG(context);
  82         }
  83         break;
  84
  85     case 0x05: /* SET REAL-TIME CLOCK DATE */
  86         FIXME( "SET REAL-TIME CLOCK DATE - not allowed\n" );
  87         break;
  88
  89     case 0x06: /* SET ALARM */
  90         FIXME( "SET ALARM - unimplemented\n" );
  91         break;
  92
  93     case 0x07: /* CANCEL ALARM */
  94         FIXME( "CANCEL ALARM - unimplemented\n" );
  95         break;
  96
  97     case 0x08: /* SET RTC ACTIVATED POWER ON MODE */
  98     case 0x09: /* READ RTC ALARM TIME AND STATUS */
  99     case 0x0a: /* READ SYSTEM-TIMER DAY COUNTER */
 100     case 0x0b: /* SET SYSTEM-TIMER DAY COUNTER */
 101     case 0x0c: /* SET RTC DATE/TIME ACTIVATED POWER-ON MODE */
 102     case 0x0d: /* RESET RTC DATE/TIME ACTIVATED POWER-ON MODE */
 103     case 0x0e: /* GET RTC DATE/TIME ALARM AND STATUS */
 104     case 0x0f: /* INITIALIZE REAL-TIME CLOCK */
 105         INT_BARF( context, 0x1a );
 106         break;
 107
 108     case 0xb0:
 109         if (CX_reg(context) == 0x4d52 &&
 110             DX_reg(context) == 0x4349 &&
 111             AL_reg(context) == 0x01)
 112         {
 113             /*
 114              * Microsoft Real-Time Compression Interface (MRCI).
 115              * Ignoring this call indicates MRCI is not supported.
 116              */
 117             TRACE( "Microsoft Real-Time Compression Interface - not supported\n" );
 118         }
 119         else
 120         {
 121             INT_BARF(context, 0x1a);
 122         }
 123         break;
 124
 125     default:
 126         INT_BARF( context, 0x1a );
 127     }
 128 }