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64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
/*
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* FreeLoader
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <freeldr.h>
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#define RTC_REGISTER_A 0x0A
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#define RTC_REG_A_UIP 0x80 /* Update In Progress bit */
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#define BCD_INT(bcd) (((bcd & 0xf0) >> 4) * 10 + (bcd &0x0f))
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static UCHAR
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HalpQueryCMOS(UCHAR Reg)
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{
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UCHAR Val;
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Reg |= 0x80;
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WRITE_PORT_UCHAR((PUCHAR)0x70, Reg);
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Val = READ_PORT_UCHAR((PUCHAR)0x71);
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WRITE_PORT_UCHAR((PUCHAR)0x70, 0);
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return(Val);
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}
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TIMEINFO*
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XboxGetTime(VOID)
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{
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static TIMEINFO TimeInfo;
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while (HalpQueryCMOS (RTC_REGISTER_A) & RTC_REG_A_UIP)
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{
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;
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}
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TimeInfo.Second = BCD_INT(HalpQueryCMOS(0));
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TimeInfo.Minute = BCD_INT(HalpQueryCMOS(2));
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TimeInfo.Hour = BCD_INT(HalpQueryCMOS(4));
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TimeInfo.Day = BCD_INT(HalpQueryCMOS(7));
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TimeInfo.Month = BCD_INT(HalpQueryCMOS(8));
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TimeInfo.Year = BCD_INT(HalpQueryCMOS(9));
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if (TimeInfo.Year > 80)
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TimeInfo.Year += 1900;
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else
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TimeInfo.Year += 2000;
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return &TimeInfo;
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}
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/* EOF */
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