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
26 #include "wine/debug.h"
28 WINE_DEFAULT_DEBUG_CHANNEL(int);
30 #define BCD_TO_BIN(x) ((x&15) + (x>>4)*10)
31 #define BIN_TO_BCD(x) ((x%10) + ((x/10)<<4))
34 /**********************************************************************
35 * INT1A_GetTicksSinceMidnight
37 * Return number of clock ticks since midnight.
39 DWORD
INT1A_GetTicksSinceMidnight(void)
45 /* This should give us the (approximately) correct
46 * 18.206 clock ticks per second since midnight.
48 gettimeofday( &tvs
, NULL
);
50 bdtime
= localtime( &seconds
);
51 return (((bdtime
->tm_hour
* 3600 + bdtime
->tm_min
* 60 +
52 bdtime
->tm_sec
) * 18206) / 1000) +
53 (tvs
.tv_usec
/ 54927);
57 /**********************************************************************
58 * INT_Int1aHandler (WPROCS.126)
61 * 0x00 - 0x07 - date and time
62 * 0x?? - 0x?? - Microsoft Real Time Compression Interface
64 void WINAPI
INT_Int1aHandler( CONTEXT86
*context
)
70 switch(AH_reg(context
))
73 ticks
= INT1A_GetTicksSinceMidnight();
74 CX_reg(context
) = HIWORD(ticks
);
75 DX_reg(context
) = LOWORD(ticks
);
76 AX_reg(context
) = 0; /* No midnight rollover */
77 TRACE("int1a: AH=00 -- ticks=%ld\n", ticks
);
82 bdtime
= localtime(<ime
);
84 CX_reg(context
) = (BIN_TO_BCD(bdtime
->tm_hour
)<<8) |
85 BIN_TO_BCD(bdtime
->tm_min
);
86 DX_reg(context
) = (BIN_TO_BCD(bdtime
->tm_sec
)<<8);
90 bdtime
= localtime(<ime
);
91 CX_reg(context
) = (BIN_TO_BCD(bdtime
->tm_year
/100)<<8) |
92 BIN_TO_BCD((bdtime
->tm_year
-1900)%100);
93 DX_reg(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 );