2 * BIOS interrupt 1ah handler
12 #define BCD_TO_BIN(x) ((x&15) + (x>>4)*10)
13 #define BIN_TO_BCD(x) ((x%10) + ((x/10)<<4))
16 /**********************************************************************
17 * INT1A_GetTicksSinceMidnight
19 * Return number of clock ticks since midnight.
21 DWORD INT1A_GetTicksSinceMidnight(void)
27 /* This should give us the (approximately) correct
28 * 18.206 clock ticks per second since midnight.
30 gettimeofday( &tvs, NULL );
32 bdtime = localtime( &seconds );
33 return (((bdtime->tm_hour * 3600 + bdtime->tm_min * 60 +
34 bdtime->tm_sec) * 18206) / 1000) +
35 (tvs.tv_usec / 54927);
39 /**********************************************************************
42 * Handler for int 1ah (date and time).
44 void WINAPI INT_Int1aHandler( CONTEXT *context )
50 switch(AH_reg(context))
53 ticks = INT1A_GetTicksSinceMidnight();
54 CX_reg(context) = HIWORD(ticks);
55 DX_reg(context) = LOWORD(ticks);
56 AX_reg(context) = 0; /* No midnight rollover */
57 TRACE(int,"int1a: AH=00 -- ticks=%ld\n", ticks);
62 bdtime = localtime(<ime);
64 CX_reg(context) = (BIN_TO_BCD(bdtime->tm_hour)<<8) |
65 BIN_TO_BCD(bdtime->tm_min);
66 DX_reg(context) = (BIN_TO_BCD(bdtime->tm_sec)<<8);
70 bdtime = localtime(<ime);
71 CX_reg(context) = (BIN_TO_BCD(bdtime->tm_year/100)<<8) |
72 BIN_TO_BCD((bdtime->tm_year-1900)%100);
73 DX_reg(context) = (BIN_TO_BCD(bdtime->tm_mon)<<8) |
74 BIN_TO_BCD(bdtime->tm_mday);
77 /* setting the time,date or RTC is not allow -EB */
91 INT_BARF( context, 0x1a );