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function HalQueryRealTimeClock : partial implementation

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svn path=/trunk/; revision=234
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jean 1999-02-15 11:35:01 +00:00
parent 621baeefa5
commit fc52fb7648
1 changed files with 53 additions and 0 deletions
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reactos/ntoskrnl/hal/x86/time.c Normal file
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/* * COPYRIGHT: See COPYING in the top level directory * PROJECT: ReactOS kernel
* FILE: ntoskrnl/hal/x86/time.c
* PURPOSE: Getting time information
* UPDATE HISTORY:
*/
/* INCLUDES *****************************************************************/
#include <ddk/ntddk.h>
#include <internal/stddef.h>
#include <internal/ntoskrnl.h>
#include <internal/ke.h>
#include <internal/bitops.h>
#include <internal/linkage.h>
#include <internal/string.h>
#include <internal/i386/segment.h>
#include <internal/halio.h>
#define NDEBUG
#include <internal/debug.h>
/* FUNCTIONS *****************************************************************/
/* macro BCD_INT : convert bcd to int */
#define BCD_INT(bcd) ( ((bcd &0xf0)>>4)*10+(bcd &0x0f) )
void HalQueryRealTimeClock(PTIME_FIELDS pTime)
{
//FIXME : wait RTC ok?
do
{
outb(0x70,0);
pTime->Second=BCD_INT(inb(0x71));
} while(pTime->Second>60);
outb(0x70,2);
pTime->Minute=BCD_INT(inb(0x71));
outb(0x70,4);
pTime->Hour=BCD_INT(inb(0x71));
outb(0x70,6);
pTime->Weekday=BCD_INT(inb(0x71));
outb(0x70,7);
pTime->Day=BCD_INT(inb(0x71));
outb(0x70,8);
pTime->Month=BCD_INT(inb(0x71));
outb_p(0x70,9);
pTime->Year=BCD_INT(inb_p(0x71));
if(pTime->Year>80) pTime->Year +=1900;
else pTime->Year +=2000;
//FIXME pTime->MilliSeconds=
}