ReactOS  0.4.15-dev-2522-g9e0a3cd
rtc.h
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1 /*
2  * PROJECT: NEC PC-98 series onboard hardware
3  * LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
4  * PURPOSE: NEC uPD1990A/uPD4990A RTC header file
5  * COPYRIGHT: Copyright 2020 Dmitry Borisov (di.sean@protonmail.com)
6  */
7 
8 #pragma once
9 
10 #define RTC_IO_o_DATA 0x20
11  /* Input terminals */
12  #define RTC_DATA_INPUT 0x20
13  #define RTC_CLOCK 0x10
14  #define RTC_STROBE 0x08
15  /* Commands, shift register 40 bit */
16  #define RTC_CMD_REGISTER_HOLD 0x00
17  #define RTC_CMD_REGISTER_SHIFT 0x01
18  #define RTC_CMD_TIME_SET_COUNTER_HOLD 0x02
19  #define RTC_CMD_TIME_READ 0x03
20  #define RTC_CMD_TIMING_PULSE_64_HZ 0x04
21  #define RTC_CMD_TIMING_PULSE_256_HZ 0x05
22  #define RTC_CMD_TIMING_PULSE_2048_HZ 0x06
23  #define RTC_CMD_SERIAL_TRANSFER_MODE 0x07
24  /* Serial data commands, shift register 52 bit (uPD4990A only) */
25  #define RTC_CMD_TIMING_PULSE_4096_HZ 0x07
26  #define RTC_CMD_TIMING_PULSE_1_S_INT 0x08
27  #define RTC_CMD_TIMING_PULSE_10_S_INT 0x09
28  #define RTC_CMD_TIMING_PULSE_30_S_INT 0x0A
29  #define RTC_CMD_TIMING_PULSE_60_S_INT 0x0B
30  #define RTC_CMD_INTERRUPT_RESET 0x0C
31  #define RTC_CMD_INTERRUPT_START 0x0D
32  #define RTC_CMD_INTERRUPT_STOP 0x0E
33  #define RTC_CMD_TEST_MODE 0x0F
34 
35 #define RTC_IO_o_MODE 0x22
36 
37 #define RTC_IO_o_INT_CLOCK_DIVISOR 0x128
38  #define RTC_INT_CLOCK_DIVISOR_64 0x00
39  #define RTC_INT_CLOCK_DIVISOR_32 0x01
40  #define RTC_INT_CLOCK_DIVISOR_0 0x02
41  #define RTC_INT_CLOCK_DIVISOR_16 0x03
42 
43 #define RTC_IO_i_MODE 0x22
44 #define RTC_IO_i_INTERRUPT_RESET 0x128