hw/mc146818rtc_regs.h

   1 /*
   2  * QEMU MC146818 RTC emulation
   3  *
   4  * Copyright (c) 2003-2004 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #ifndef RTC_REGS_H
  25 #define RTC_REGS_H
  26
  27 #define RTC_ISA_IRQ 8
  28
  29 #define RTC_SECONDS             0
  30 #define RTC_SECONDS_ALARM       1
  31 #define RTC_MINUTES             2
  32 #define RTC_MINUTES_ALARM       3
  33 #define RTC_HOURS               4
  34 #define RTC_HOURS_ALARM         5
  35 #define RTC_ALARM_DONT_CARE    0xC0
  36
  37 #define RTC_DAY_OF_WEEK         6
  38 #define RTC_DAY_OF_MONTH        7
  39 #define RTC_MONTH               8
  40 #define RTC_YEAR                9
  41
  42 #define RTC_REG_A               10
  43 #define RTC_REG_B               11
  44 #define RTC_REG_C               12
  45 #define RTC_REG_D               13
  46
  47 /* PC cmos mappings */
  48 #define RTC_CENTURY              0x32
  49 #define RTC_IBM_PS2_CENTURY_BYTE 0x37
  50
  51 #define REG_A_UIP 0x80
  52
  53 #define REG_B_SET  0x80
  54 #define REG_B_PIE  0x40
  55 #define REG_B_AIE  0x20
  56 #define REG_B_UIE  0x10
  57 #define REG_B_SQWE 0x08
  58 #define REG_B_DM   0x04
  59 #define REG_B_24H  0x02
  60
  61 #define REG_C_UF   0x10
  62 #define REG_C_IRQF 0x80
  63 #define REG_C_PF   0x40
  64 #define REG_C_AF   0x20
  65 #define REG_C_MASK 0x70
  66
  67 #endif