2 * BIOS interrupt 1ah handler
4 * Copyright 1993 Erik Bos
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.
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.
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
22 #include "wine/port.h"
25 #ifdef HAVE_SYS_TIME_H
26 # include <sys/time.h>
31 #include "wine/debug.h"
33 WINE_DEFAULT_DEBUG_CHANNEL(int);
35 #define BCD_TO_BIN(x) ((x&15) + (x>>4)*10)
36 #define BIN_TO_BCD(x) ((x%10) + ((x/10)<<4))
39 /**********************************************************************
40 * INT1A_GetTicksSinceMidnight
42 * Return number of clock ticks since midnight.
44 DWORD INT1A_GetTicksSinceMidnight(void)
49 NtQuerySystemTime( &time );
50 RtlSystemTimeToLocalTime( &time, &time );
51 RtlTimeToTimeFields( &time, &tf );
52 return ((tf.Hour * 3600 + tf.Minute * 60 + tf.Second) * 18206 / 1000 +
53 tf.Milliseconds * 1000 / 54927);
57 /**********************************************************************
58 * DOSVM_Int1aHandler (WINEDOS16.126)
61 * 0x00 - 0x07 - date and time
62 * 0x?? - 0x?? - Microsoft Real Time Compression Interface
64 void WINAPI DOSVM_Int1aHandler( CONTEXT86 *context )
70 switch(AH_reg(context))
73 ticks = INT1A_GetTicksSinceMidnight();
74 SET_CX( context, HIWORD(ticks) );
75 SET_DX( context, LOWORD(ticks) );
76 SET_AX( context, 0 ); /* No midnight rollover */
77 TRACE("int1a: AH=00 -- ticks=%ld\n", ticks);
82 bdtime = localtime(<ime);
84 SET_CX( context, (BIN_TO_BCD(bdtime->tm_hour)<<8) |
85 BIN_TO_BCD(bdtime->tm_min) );
86 SET_DX( context, (BIN_TO_BCD(bdtime->tm_sec)<<8) );
90 bdtime = localtime(<ime);
91 SET_CX( context, (BIN_TO_BCD(bdtime->tm_year/100)<<8) |
92 BIN_TO_BCD((bdtime->tm_year-1900)%100) );
93 SET_DX( context, (BIN_TO_BCD(bdtime->tm_mon)<<8) |
94 BIN_TO_BCD(bdtime->tm_mday) );
97 /* setting the time,date or RTC is not allow -EB */
110 case 0xb0: /* Microsoft Real Time Compression */
111 switch AL_reg(context)
117 INT_BARF(context, 0x1a);
122 INT_BARF( context, 0x1a );