mirror of
https://github.com/holub/mame
synced 2025-05-16 10:52:43 +03:00
Imported uPD1990A RTC from MESS. (no whatsnew)
This commit is contained in:
Curt Coder
parent
9809123a38
commit
9ce28237de
2
.gitattributes
vendored
2
.gitattributes
vendored
@ -877,6 +877,8 @@ src/emu/machine/tmp68301.c svneol=native#text/plain
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src/emu/machine/tmp68301.h svneol=native#text/plain
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src/emu/machine/tms6100.c svneol=native#text/plain
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src/emu/machine/tms6100.h svneol=native#text/plain
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src/emu/machine/upd1990a.c svneol=native#text/plain
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src/emu/machine/upd1990a.h svneol=native#text/plain
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src/emu/machine/upd4701.c svneol=native#text/plain
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src/emu/machine/upd4701.h svneol=native#text/plain
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src/emu/machine/wd33c93.c svneol=native#text/plain
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@ -213,6 +213,7 @@ EMUMACHINEOBJS = \
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$(EMUMACHINE)/timekpr.o \
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$(EMUMACHINE)/tmp68301.o \
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$(EMUMACHINE)/tms6100.o \
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$(EMUMACHINE)/upd1990a.o \
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$(EMUMACHINE)/upd4701.o \
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$(EMUMACHINE)/wd33c93.o \
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$(EMUMACHINE)/x2212.o \
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534
src/emu/machine/upd1990a.c
Normal file
534
src/emu/machine/upd1990a.c
Normal file
@ -0,0 +1,534 @@
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/**********************************************************************
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NEC uPD1990AC Serial I/O Calendar & Clock emulation
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Copyright MESS Team.
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Visit http://mamedev.org for licensing and usage restrictions.
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**********************************************************************/
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/*
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TODO:
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- test mode
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*/
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#include "emu.h"
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#include "upd1990a.h"
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#include "machine/devhelpr.h"
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//**************************************************************************
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// MACROS / CONSTANTS
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//**************************************************************************
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#define LOG 0
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// operating modes
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enum
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{
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MODE_REGISTER_HOLD = 0,
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MODE_SHIFT,
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MODE_TIME_SET,
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MODE_TIME_READ,
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MODE_TP_64HZ_SET,
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MODE_TP_256HZ_SET,
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MODE_TP_2048HZ_SET,
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MODE_TEST,
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};
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//**************************************************************************
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// GLOBAL VARIABLES
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//**************************************************************************
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// devices
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const device_type UPD1990A = upd1990a_device_config::static_alloc_device_config;
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//**************************************************************************
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// DEVICE CONFIGURATION
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//**************************************************************************
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GENERIC_DEVICE_CONFIG_SETUP(upd1990a, "uPD1990A")
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//-------------------------------------------------
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// device_config_complete - perform any
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// operations now that the configuration is
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// complete
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//-------------------------------------------------
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void upd1990a_device_config::device_config_complete()
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{
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// inherit a copy of the static data
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const upd1990a_interface *intf = reinterpret_cast<const upd1990a_interface *>(static_config());
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if (intf != NULL)
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*static_cast<upd1990a_interface *>(this) = *intf;
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// or initialize to defaults if none provided
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else
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{
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// memset(&in_pa_func, 0, sizeof(in_pa_func));
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}
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}
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//**************************************************************************
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// INLINE HELPERS
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//**************************************************************************
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//-------------------------------------------------
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// convert_to_bcd -
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//-------------------------------------------------
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inline UINT8 upd1990a_device::convert_to_bcd(int val)
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{
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return ((val / 10) << 4) | (val % 10);
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}
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//-------------------------------------------------
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// bcd_to_integer -
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//-------------------------------------------------
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inline int upd1990a_device::bcd_to_integer(UINT8 val)
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{
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return (((val & 0xf0) >> 4) * 10) + (val & 0x0f);
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}
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//-------------------------------------------------
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// advance_seconds -
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//-------------------------------------------------
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inline void upd1990a_device::advance_seconds()
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{
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static const int days_per_month[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
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int seconds = bcd_to_integer(m_time_counter[0]);
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int minutes = bcd_to_integer(m_time_counter[1]);
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int hours = bcd_to_integer(m_time_counter[2]);
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int days = bcd_to_integer(m_time_counter[3]);
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int day_of_week = m_time_counter[4] & 0x0f;
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int month = (m_time_counter[4] & 0xf0) >> 4;
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seconds++;
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if (seconds > 59)
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{
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seconds = 0;
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minutes++;
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}
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if (minutes > 59)
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{
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minutes = 0;
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hours++;
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}
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if (hours > 23)
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{
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hours = 0;
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days++;
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day_of_week++;
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}
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if (day_of_week > 6)
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{
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day_of_week++;
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}
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if (days > days_per_month[month - 1])
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{
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days = 1;
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month++;
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}
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if (month > 12)
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{
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month = 1;
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}
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m_time_counter[0] = convert_to_bcd(seconds);
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m_time_counter[1] = convert_to_bcd(minutes);
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m_time_counter[2] = convert_to_bcd(hours);
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m_time_counter[3] = convert_to_bcd(days);
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m_time_counter[4] = (month << 4) | day_of_week;
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}
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// upd1990a_device - constructor
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//-------------------------------------------------
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upd1990a_device::upd1990a_device(running_machine &_machine, const upd1990a_device_config &config)
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: device_t(_machine, config),
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m_config(config)
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{
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}
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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void upd1990a_device::device_start()
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{
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// resolve callbacks
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devcb_resolve_write_line(&m_out_data_func, &m_config.m_out_data_func, this);
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devcb_resolve_write_line(&m_out_tp_func, &m_config.m_out_tp_func, this);
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// allocate timers
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m_timer_clock = timer_alloc(TIMER_CLOCK);
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m_timer_clock->adjust(attotime::zero, 0, attotime::from_hz(1));
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m_timer_tp = timer_alloc(TIMER_TP);
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m_timer_data_out = timer_alloc(TIMER_DATA_OUT);
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// state saving
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save_item(NAME(m_time_counter));
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save_item(NAME(m_shift_reg));
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save_item(NAME(m_oe));
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save_item(NAME(m_cs));
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save_item(NAME(m_stb));
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save_item(NAME(m_data_in));
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save_item(NAME(m_data_out));
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save_item(NAME(m_c));
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save_item(NAME(m_clk));
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save_item(NAME(m_tp));
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}
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//-------------------------------------------------
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// device_reset - device-specific reset
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//-------------------------------------------------
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void upd1990a_device::device_reset()
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{
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system_time curtime, *systime = &curtime;
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machine().current_datetime(curtime);
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// HACK: load time counter from system time
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m_time_counter[0] = convert_to_bcd(systime->local_time.second);
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m_time_counter[1] = convert_to_bcd(systime->local_time.minute);
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m_time_counter[2] = convert_to_bcd(systime->local_time.hour);
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m_time_counter[3] = convert_to_bcd(systime->local_time.mday);
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m_time_counter[4] = systime->local_time.weekday;
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m_time_counter[4] |= (systime->local_time.month + 1) << 4;
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}
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//-------------------------------------------------
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// device_timer - handler timer events
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//-------------------------------------------------
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void upd1990a_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
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{
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switch (id)
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{
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case TIMER_CLOCK:
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advance_seconds();
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break;
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case TIMER_TP:
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m_tp = !m_tp;
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if (LOG) logerror("UPD1990A TP %u\n", m_tp);
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devcb_call_write_line(&m_out_tp_func, m_tp);
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break;
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case TIMER_DATA_OUT:
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m_data_out = !m_data_out;
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if (LOG) logerror("UPD1990A DATA OUT TICK %u\n", m_data_out);
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devcb_call_write_line(&m_out_data_func, m_data_out);
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break;
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}
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}
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//-------------------------------------------------
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// oe_w -
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//-------------------------------------------------
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WRITE_LINE_MEMBER( upd1990a_device::oe_w )
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{
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if (LOG) logerror("UPD1990A OE %u\n", state);
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m_oe = state;
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}
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//-------------------------------------------------
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// cs_w -
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//-------------------------------------------------
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WRITE_LINE_MEMBER( upd1990a_device::cs_w )
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{
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if (LOG) logerror("UPD1990A CS %u\n", state);
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m_cs = state;
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}
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//-------------------------------------------------
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// stb_w -
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//-------------------------------------------------
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WRITE_LINE_MEMBER( upd1990a_device::stb_w )
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{
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if (LOG) logerror("UPD1990A STB %u\n", state);
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m_stb = state;
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if (m_cs && m_stb && !m_clk)
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{
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switch (m_c)
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{
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case MODE_REGISTER_HOLD:
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if (LOG) logerror("UPD1990A Register Hold Mode\n");
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/* enable time counter */
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m_timer_clock->enable(1);
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/* 1 Hz data out pulse */
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m_data_out = 1;
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m_timer_data_out->adjust(attotime::zero, 0, attotime::from_hz(1*2));
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/* 64 Hz time pulse */
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m_timer_tp->adjust(attotime::zero, 0, attotime::from_hz(64*2));
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break;
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case MODE_SHIFT:
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if (LOG) logerror("UPD1990A Shift Mode\n");
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/* enable time counter */
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m_timer_clock->enable(1);
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/* disable data out pulse */
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m_timer_data_out->enable(0);
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/* output LSB of shift register */
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m_data_out = BIT(m_shift_reg[0], 0);
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devcb_call_write_line(&m_out_data_func, m_data_out);
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/* 32 Hz time pulse */
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m_timer_tp->adjust(attotime::zero, 0, attotime::from_hz(32*2));
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break;
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case MODE_TIME_SET:
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{
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int i;
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if (LOG) logerror("UPD1990A Time Set Mode\n");
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if (LOG) logerror("UPD1990A Shift Register %02x%02x%02x%02x%02x\n", m_shift_reg[4], m_shift_reg[3], m_shift_reg[2], m_shift_reg[1], m_shift_reg[0]);
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/* disable time counter */
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m_timer_clock->enable(0);
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/* disable data out pulse */
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m_timer_data_out->enable(0);
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/* output LSB of shift register */
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m_data_out = BIT(m_shift_reg[0], 0);
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devcb_call_write_line(&m_out_data_func, m_data_out);
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/* load shift register data into time counter */
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for (i = 0; i < 5; i++)
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{
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m_time_counter[i] = m_shift_reg[i];
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}
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/* 32 Hz time pulse */
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m_timer_tp->adjust(attotime::zero, 0, attotime::from_hz(32*2));
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}
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break;
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case MODE_TIME_READ:
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{
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int i;
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if (LOG) logerror("UPD1990A Time Read Mode\n");
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/* enable time counter */
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m_timer_clock->enable(1);
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/* load time counter data into shift register */
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for (i = 0; i < 5; i++)
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{
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m_shift_reg[i] = m_time_counter[i];
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}
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if (LOG) logerror("UPD1990A Shift Register %02x%02x%02x%02x%02x\n", m_shift_reg[4], m_shift_reg[3], m_shift_reg[2], m_shift_reg[1], m_shift_reg[0]);
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/* 512 Hz data out pulse */
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m_data_out = 1;
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m_timer_data_out->adjust(attotime::zero, 0, attotime::from_hz(512*2));
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/* 32 Hz time pulse */
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m_timer_tp->adjust(attotime::zero, 0, attotime::from_hz(32*2));
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}
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break;
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case MODE_TP_64HZ_SET:
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if (LOG) logerror("UPD1990A TP = 64 Hz Set Mode\n");
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/* 64 Hz time pulse */
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m_timer_tp->adjust(attotime::zero, 0, attotime::from_hz(64*2));
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break;
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case MODE_TP_256HZ_SET:
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if (LOG) logerror("UPD1990A TP = 256 Hz Set Mode\n");
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/* 256 Hz time pulse */
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m_timer_tp->adjust(attotime::zero, 0, attotime::from_hz(256*2));
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break;
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case MODE_TP_2048HZ_SET:
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if (LOG) logerror("UPD1990A TP = 2048 Hz Set Mode\n");
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/* 2048 Hz time pulse */
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m_timer_tp->adjust(attotime::zero, 0, attotime::from_hz(2048*2));
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break;
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case MODE_TEST:
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if (LOG) logerror("UPD1990A Test Mode not supported!\n");
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if (m_oe)
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{
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/* time counter is advanced at 1024 Hz from "Second" counter input */
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}
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else
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{
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/* each counter is advanced at 1024 Hz in parallel, overflow carry does not affect next counter */
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}
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break;
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}
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}
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}
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//-------------------------------------------------
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// clk_w -
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//-------------------------------------------------
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WRITE_LINE_MEMBER( upd1990a_device::clk_w )
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{
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if (LOG) logerror("UPD1990A CLK %u\n", state);
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if (!m_clk && state) // rising edge
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{
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if (m_c == MODE_SHIFT)
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{
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m_shift_reg[0] >>= 1;
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m_shift_reg[0] |= (BIT(m_shift_reg[1], 0) << 7);
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m_shift_reg[1] >>= 1;
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m_shift_reg[1] |= (BIT(m_shift_reg[2], 0) << 7);
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m_shift_reg[2] >>= 1;
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m_shift_reg[2] |= (BIT(m_shift_reg[3], 0) << 7);
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m_shift_reg[3] >>= 1;
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m_shift_reg[3] |= (BIT(m_shift_reg[4], 0) << 7);
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m_shift_reg[4] >>= 1;
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m_shift_reg[4] |= (m_data_in << 7);
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if (m_oe)
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{
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m_data_out = BIT(m_shift_reg[0], 0);
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if (LOG) logerror("UPD1990A DATA OUT %u\n", m_data_out);
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devcb_call_write_line(&m_out_data_func, m_data_out);
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}
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}
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}
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m_clk = state;
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}
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//-------------------------------------------------
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// c0_w -
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//-------------------------------------------------
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WRITE_LINE_MEMBER( upd1990a_device::c0_w )
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{
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if (LOG) logerror("UPD1990A C0 %u\n", state);
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m_c = (m_c & 0x06) | state;
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}
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//-------------------------------------------------
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// c1_w -
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//-------------------------------------------------
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WRITE_LINE_MEMBER( upd1990a_device::c1_w )
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{
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if (LOG) logerror("UPD1990A C1 %u\n", state);
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m_c = (m_c & 0x05) | (state << 1);
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}
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//-------------------------------------------------
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// c2_w -
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//-------------------------------------------------
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WRITE_LINE_MEMBER( upd1990a_device::c2_w )
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||||
{
|
||||
if (LOG) logerror("UPD1990A C2 %u\n", state);
|
||||
|
||||
m_c = (m_c & 0x03) | (state << 2);
|
||||
}
|
||||
|
||||
|
||||
//-------------------------------------------------
|
||||
// data_in_w -
|
||||
//-------------------------------------------------
|
||||
|
||||
WRITE_LINE_MEMBER( upd1990a_device::data_in_w )
|
||||
{
|
||||
if (LOG) logerror("UPD1990A DATA IN %u\n", state);
|
||||
|
||||
m_data_in = state;
|
||||
}
|
||||
|
||||
|
||||
//-------------------------------------------------
|
||||
// data_out_r -
|
||||
//-------------------------------------------------
|
||||
|
||||
READ_LINE_MEMBER( upd1990a_device::data_out_r )
|
||||
{
|
||||
return m_data_out;
|
||||
}
|
||||
|
||||
|
||||
//-------------------------------------------------
|
||||
// tp_r -
|
||||
//-------------------------------------------------
|
||||
|
||||
READ_LINE_MEMBER( upd1990a_device::tp_r )
|
||||
{
|
||||
return m_tp;
|
||||
}
|
||||
150
src/emu/machine/upd1990a.h
Normal file
150
src/emu/machine/upd1990a.h
Normal file
@ -0,0 +1,150 @@
|
||||
/**********************************************************************
|
||||
|
||||
NEC uPD1990AC Serial I/O Calendar & Clock emulation
|
||||
|
||||
Copyright MESS Team.
|
||||
Visit http://mamedev.org for licensing and usage restrictions.
|
||||
|
||||
**********************************************************************
|
||||
_____ _____
|
||||
C2 1 |* \_/ | 14 Vdd
|
||||
C1 2 | | 13 XTAL
|
||||
C0 3 | | 12 _XTAL
|
||||
STB 4 | uPD1990AC | 11 OUT ENBL
|
||||
CS 5 | | 10 TP
|
||||
DATA IN 6 | | 9 DATA OUT
|
||||
GND 7 |_____________| 8 CLK
|
||||
|
||||
**********************************************************************/
|
||||
|
||||
#pragma once
|
||||
|
||||
#ifndef __UPD1990A__
|
||||
#define __UPD1990A__
|
||||
|
||||
#include "emu.h"
|
||||
|
||||
|
||||
|
||||
//**************************************************************************
|
||||
// MACROS / CONSTANTS
|
||||
//**************************************************************************
|
||||
|
||||
|
||||
|
||||
|
||||
//**************************************************************************
|
||||
// INTERFACE CONFIGURATION MACROS
|
||||
//**************************************************************************
|
||||
|
||||
#define MCFG_UPD1990A_ADD(_tag, _clock, _config) \
|
||||
MCFG_DEVICE_ADD((_tag), UPD1990A, _clock) \
|
||||
MCFG_DEVICE_CONFIG(_config)
|
||||
|
||||
#define UPD1990A_INTERFACE(name) \
|
||||
const upd1990a_interface (name) =
|
||||
|
||||
|
||||
|
||||
//**************************************************************************
|
||||
// TYPE DEFINITIONS
|
||||
//**************************************************************************
|
||||
|
||||
// ======================> upd1990a_interface
|
||||
|
||||
struct upd1990a_interface
|
||||
{
|
||||
devcb_write_line m_out_data_func;
|
||||
devcb_write_line m_out_tp_func;
|
||||
};
|
||||
|
||||
|
||||
|
||||
// ======================> upd1990a_device_config
|
||||
|
||||
class upd1990a_device_config : public device_config,
|
||||
public upd1990a_interface
|
||||
{
|
||||
friend class upd1990a_device;
|
||||
|
||||
// construction/destruction
|
||||
upd1990a_device_config(const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock);
|
||||
|
||||
public:
|
||||
// allocators
|
||||
static device_config *static_alloc_device_config(const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock);
|
||||
virtual device_t *alloc_device(running_machine &machine) const;
|
||||
|
||||
protected:
|
||||
// device_config overrides
|
||||
virtual void device_config_complete();
|
||||
};
|
||||
|
||||
|
||||
|
||||
// ======================> upd1990a_device
|
||||
|
||||
class upd1990a_device : public device_t
|
||||
{
|
||||
friend class upd1990a_device_config;
|
||||
|
||||
// construction/destruction
|
||||
upd1990a_device(running_machine &_machine, const upd1990a_device_config &_config);
|
||||
|
||||
public:
|
||||
DECLARE_WRITE_LINE_MEMBER( oe_w );
|
||||
DECLARE_WRITE_LINE_MEMBER( cs_w );
|
||||
DECLARE_WRITE_LINE_MEMBER( stb_w );
|
||||
DECLARE_WRITE_LINE_MEMBER( clk_w );
|
||||
DECLARE_WRITE_LINE_MEMBER( c0_w );
|
||||
DECLARE_WRITE_LINE_MEMBER( c1_w );
|
||||
DECLARE_WRITE_LINE_MEMBER( c2_w );
|
||||
DECLARE_WRITE_LINE_MEMBER( data_in_w );
|
||||
DECLARE_READ_LINE_MEMBER( data_out_r );
|
||||
DECLARE_READ_LINE_MEMBER( tp_r );
|
||||
|
||||
protected:
|
||||
// device-level overrides
|
||||
virtual void device_start();
|
||||
virtual void device_reset();
|
||||
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
|
||||
|
||||
private:
|
||||
inline UINT8 convert_to_bcd(int val);
|
||||
inline int bcd_to_integer(UINT8 val);
|
||||
inline void advance_seconds();
|
||||
|
||||
static const device_timer_id TIMER_CLOCK = 0;
|
||||
static const device_timer_id TIMER_TP = 1;
|
||||
static const device_timer_id TIMER_DATA_OUT = 2;
|
||||
|
||||
devcb_resolved_write_line m_out_data_func;
|
||||
devcb_resolved_write_line m_out_tp_func;
|
||||
|
||||
UINT8 m_time_counter[5]; // time counter
|
||||
UINT8 m_shift_reg[5]; // shift register
|
||||
|
||||
int m_oe; // output enable
|
||||
int m_cs; // chip select
|
||||
int m_stb; // strobe
|
||||
int m_data_in; // data in
|
||||
int m_data_out; // data out
|
||||
int m_c; // command
|
||||
int m_clk; // shift clock
|
||||
int m_tp; // time pulse
|
||||
|
||||
// timers
|
||||
emu_timer *m_timer_clock;
|
||||
emu_timer *m_timer_tp;
|
||||
emu_timer *m_timer_data_out;
|
||||
|
||||
const upd1990a_device_config &m_config;
|
||||
};
|
||||
|
||||
|
||||
// device type definition
|
||||
extern const device_type UPD1990A;
|
||||
|
||||
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user