arch/all-pc/battclock/cmos.h

   1 /*
   2     Copyright © 1995-2011, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: CMOS offsets.
   6     Lang: English
   7 */
   8
   9 #ifndef CMOS_H
  10 #define CMOS_H
  11
  12 #define CENTURY         0x32
  13 #define YEAR            0x09
  14 #define MONTH           0x08
  15 #define MDAY            0x07
  16 #define HOUR            0x04
  17 #define MIN             0x02
  18 #define SEC             0x00
  19 #define STATUS_A        0x0A
  20 #define STATUS_B        0x0B
  21 #define HEALTH          0x0E
  22
  23 static inline UBYTE ReadCMOSByte(UBYTE port)
  24 {
  25     UBYTE value;
  26
  27     asm volatile("outb  %0,$0x70" :: "a"(port));
  28     asm volatile("inb   $0x71,%0" : "=a"(value));
  29
  30     return value;
  31 }
  32
  33 static inline VOID WriteCMOSByte(UBYTE port, UBYTE value)
  34 {
  35     asm volatile("outb  %0,$0x70" :: "a"(port));
  36     asm volatile("outb  %0,$0x71" :: "a"(value));
  37
  38     return;
  39 }
  40
  41 #endif /* CMOS_H */