mirror of
https://github.com/holub/mame
synced 2025-05-11 16:48:52 +03:00
Imported RP5C15 RTC from MESS. (no whatsnew)
This commit is contained in:
Curt Coder
parent
62335e3a06
commit
c39297ce17
2
.gitattributes
vendored
2
.gitattributes
vendored
@ -866,6 +866,8 @@ src/emu/machine/roc10937.c svneol=native#text/plain
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src/emu/machine/roc10937.h svneol=native#text/plain
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src/emu/machine/rp5c01.c svneol=native#text/plain
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src/emu/machine/rp5c01.h svneol=native#text/plain
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src/emu/machine/rp5c15.c svneol=native#text/plain
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src/emu/machine/rp5c15.h svneol=native#text/plain
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src/emu/machine/rp5h01.c svneol=native#text/plain
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src/emu/machine/rp5h01.h svneol=native#text/plain
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src/emu/machine/rtc65271.c svneol=native#text/plain
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@ -208,6 +208,7 @@ EMUMACHINEOBJS = \
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$(EMUMACHINE)/ram.o \
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$(EMUMACHINE)/roc10937.o \
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$(EMUMACHINE)/rp5c01.o \
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$(EMUMACHINE)/rp5c15.o \
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$(EMUMACHINE)/rp5h01.o \
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$(EMUMACHINE)/rtc65271.o \
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$(EMUMACHINE)/s3c2400.o \
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@ -293,6 +293,26 @@ inline void rp5c01_device::advance_minutes()
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}
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//-------------------------------------------------
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// adjust_seconds -
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//-------------------------------------------------
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inline void rp5c01_device::adjust_seconds()
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{
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int seconds = read_counter(REGISTER_1_SECOND);
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if (seconds < 30)
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{
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write_counter(REGISTER_1_SECOND, 0);
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}
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else
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{
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write_counter(REGISTER_1_SECOND, 0);
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advance_minutes();
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}
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}
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//-------------------------------------------------
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// check_alarm -
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//-------------------------------------------------
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@ -427,17 +447,7 @@ WRITE_LINE_MEMBER( rp5c01_device::adj_w )
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{
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if (state)
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{
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int seconds = read_counter(REGISTER_1_SECOND);
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if (seconds < 30)
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{
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write_counter(REGISTER_1_SECOND, 0);
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}
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else
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{
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write_counter(REGISTER_1_SECOND, 0);
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advance_minutes();
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}
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adjust_seconds();
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}
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}
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@ -109,6 +109,7 @@ private:
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inline void write_counter(int counter, int value);
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inline void advance_seconds();
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inline void advance_minutes();
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inline void adjust_seconds();
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inline void check_alarm();
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static const device_timer_id TIMER_CLOCK = 0;
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571
src/emu/machine/rp5c15.c
Normal file
571
src/emu/machine/rp5c15.c
Normal file
@ -0,0 +1,571 @@
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/**********************************************************************
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Ricoh RP5C15 Real Time 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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- 12 hour clock
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- test register
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- timer reset
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*/
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#include "rp5c15.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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// registers
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enum
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{
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REGISTER_1_SECOND = 0, REGISTER_CLOCK_OUTPUT = REGISTER_1_SECOND,
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REGISTER_10_SECOND, REGISTER_ADJUST = REGISTER_10_SECOND,
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REGISTER_1_MINUTE,
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REGISTER_10_MINUTE,
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REGISTER_1_HOUR,
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REGISTER_10_HOUR,
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REGISTER_DAY_OF_THE_WEEK,
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REGISTER_1_DAY,
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REGISTER_10_DAY,
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REGISTER_1_MONTH,
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REGISTER_10_MONTH, REGISTER_12_24_SELECT = REGISTER_10_MONTH,
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REGISTER_1_YEAR, REGISTER_LEAP_YEAR = REGISTER_1_YEAR,
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REGISTER_10_YEAR,
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REGISTER_MODE,
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REGISTER_TEST,
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REGISTER_RESET
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};
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// clock output select
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enum
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{
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CLKOUT_Z = 0,
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CLKOUT_16384_HZ,
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CLKOUT_1024_HZ,
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CLKOUT_128_HZ,
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CLKOUT_16_HZ,
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CLKOUT_1_HZ,
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CLKOUT_1_DIV_60_HZ,
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CLKOUT_L
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};
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// register write mask
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static const int REGISTER_WRITE_MASK[2][16] =
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{
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{ 0xf, 0x7, 0xf, 0x7, 0xf, 0x3, 0x7, 0xf, 0x3, 0xf, 0x1, 0xf, 0xf, 0xf, 0xf, 0xf },
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{ 0x3, 0x1, 0xf, 0x7, 0xf, 0x3, 0x7, 0xf, 0x3, 0x0, 0x1, 0x3, 0x0, 0xf, 0xf, 0xf }
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};
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// days per month
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static const int DAYS_PER_MONTH[12] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
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// modes
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enum
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{
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MODE00 = 0,
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MODE01
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};
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// mode register
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#define MODE_TIMER_EN 0x08
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#define MODE_ALARM_EN 0x04
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#define MODE_MASK 0x01
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// test register
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#define TEST_3 0x08
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#define TEST_2 0x04
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#define TEST_1 0x02
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#define TEST_0 0x01
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// reset register
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#define RESET_ALARM 0x08
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#define RESET_TIMER 0x04
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#define RESET_16_HZ 0x02
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#define RESET_1_HZ 0x01
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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 RP5C15 = rp5c15_device_config::static_alloc_device_config;
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//**************************************************************************
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// DEVICE CONFIGURATION
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//**************************************************************************
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//-------------------------------------------------
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// rp5c15_device_config - constructor
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//-------------------------------------------------
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rp5c15_device_config::rp5c15_device_config(const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock)
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: device_config(mconfig, static_alloc_device_config, "RP5C15", tag, owner, clock)
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{
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}
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//-------------------------------------------------
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// static_alloc_device_config - allocate a new
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// configuration object
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//-------------------------------------------------
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device_config *rp5c15_device_config::static_alloc_device_config(const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock)
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{
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return global_alloc(rp5c15_device_config(mconfig, tag, owner, clock));
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}
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//-------------------------------------------------
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// alloc_device - allocate a new device object
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//-------------------------------------------------
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device_t *rp5c15_device_config::alloc_device(running_machine &machine) const
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{
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return auto_alloc(machine, rp5c15_device(machine, *this));
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}
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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 rp5c15_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 rp5c15_interface *intf = reinterpret_cast<const rp5c15_interface *>(static_config());
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if (intf != NULL)
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*static_cast<rp5c15_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(&m_out_alarm_func, 0, sizeof(m_out_alarm_func));
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memset(&m_out_clkout_func, 0, sizeof(m_out_clkout_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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// set_alarm_line -
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//-------------------------------------------------
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inline void rp5c15_device::set_alarm_line()
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{
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int alarm = ((m_mode & MODE_ALARM_EN) ? m_alarm_on : 1) &
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((m_reset & RESET_16_HZ) ? 1 : m_16hz) &
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((m_reset & RESET_1_HZ) ? 1 : m_1hz);
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if (m_alarm != alarm)
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{
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if (LOG) logerror("RP5C15 '%s' Alarm %u\n", tag(), alarm);
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devcb_call_write_line(&m_out_alarm_func, alarm);
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m_alarm = alarm;
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}
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}
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//-------------------------------------------------
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// read_counter -
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//-------------------------------------------------
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inline int rp5c15_device::read_counter(int counter)
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{
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return (m_reg[MODE00][counter + 1] * 10) + m_reg[MODE00][counter];
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}
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//-------------------------------------------------
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// write_counter -
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//-------------------------------------------------
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inline void rp5c15_device::write_counter(int counter, int value)
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{
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m_reg[MODE00][counter] = value % 10;
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m_reg[MODE00][counter + 1] = value / 10;
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}
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//-------------------------------------------------
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// advance_seconds -
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//-------------------------------------------------
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inline void rp5c15_device::advance_seconds()
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{
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int seconds = read_counter(REGISTER_1_SECOND);
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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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advance_minutes();
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}
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write_counter(REGISTER_1_SECOND, seconds);
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}
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//-------------------------------------------------
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// advance_minutes -
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//-------------------------------------------------
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inline void rp5c15_device::advance_minutes()
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{
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int minutes = read_counter(REGISTER_1_MINUTE);
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int hours = read_counter(REGISTER_1_HOUR);
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int days = read_counter(REGISTER_1_DAY);
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int month = read_counter(REGISTER_1_MONTH);
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int year = read_counter(REGISTER_1_YEAR);
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int day_of_week = m_reg[MODE00][REGISTER_DAY_OF_THE_WEEK];
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minutes++;
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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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year++;
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m_reg[MODE01][REGISTER_LEAP_YEAR]++;
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m_reg[MODE01][REGISTER_LEAP_YEAR] &= 0x03;
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}
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if (year > 99)
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{
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year = 0;
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}
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write_counter(REGISTER_1_MINUTE, minutes);
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write_counter(REGISTER_1_HOUR, hours);
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write_counter(REGISTER_1_DAY, days);
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write_counter(REGISTER_1_MONTH, month);
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write_counter(REGISTER_1_YEAR, year);
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m_reg[MODE00][REGISTER_DAY_OF_THE_WEEK] = day_of_week;
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check_alarm();
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set_alarm_line();
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}
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//-------------------------------------------------
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// adjust_seconds -
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//-------------------------------------------------
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inline void rp5c15_device::adjust_seconds()
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{
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int seconds = read_counter(REGISTER_1_SECOND);
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if (seconds < 30)
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{
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write_counter(REGISTER_1_SECOND, 0);
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}
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else
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{
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write_counter(REGISTER_1_SECOND, 0);
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advance_minutes();
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}
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}
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//-------------------------------------------------
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// check_alarm -
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//-------------------------------------------------
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inline void rp5c15_device::check_alarm()
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{
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bool all_match = true;
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bool all_zeroes = true;
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for (int i = REGISTER_1_MINUTE; i < REGISTER_1_MONTH; i++)
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{
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if (m_reg[MODE01][i] != 0) all_zeroes = false;
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if (m_reg[MODE01][i] != m_reg[MODE00][i]) all_match = false;
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}
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m_alarm_on = (all_match || (!m_alarm_on && all_zeroes)) ? 0 : 1;
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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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// rp5c15_device - constructor
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//-------------------------------------------------
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rp5c15_device::rp5c15_device(running_machine &_machine, const rp5c15_device_config &config)
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: device_t(_machine, config),
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m_alarm(1),
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m_alarm_on(1),
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m_1hz(1),
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m_16hz(1),
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m_clkout(1),
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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 rp5c15_device::device_start()
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{
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// resolve callbacks
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devcb_resolve_write_line(&m_out_alarm_func, &m_config.m_out_alarm_func, this);
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devcb_resolve_write_line(&m_out_clkout_func, &m_config.m_out_clkout_func, this);
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// allocate timers
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m_clock_timer = timer_alloc(TIMER_CLOCK);
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m_clock_timer->adjust(attotime::from_hz(clock() / 16384), 0, attotime::from_hz(clock() / 16384));
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m_16hz_timer = timer_alloc(TIMER_16HZ);
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m_16hz_timer->adjust(attotime::from_hz(clock() / 1024), 0, attotime::from_hz(clock() / 1024));
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m_clkout_timer = timer_alloc(TIMER_CLKOUT);
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// state saving
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save_item(NAME(m_reg[MODE00]));
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save_item(NAME(m_reg[MODE01]));
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save_item(NAME(m_mode));
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save_item(NAME(m_reset));
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save_item(NAME(m_alarm));
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save_item(NAME(m_alarm_on));
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save_item(NAME(m_1hz));
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save_item(NAME(m_16hz));
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save_item(NAME(m_clkout));
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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 rp5c15_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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if (m_1hz && (m_mode & MODE_TIMER_EN))
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{
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advance_seconds();
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}
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m_1hz = !m_1hz;
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set_alarm_line();
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break;
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case TIMER_16HZ:
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m_16hz = !m_16hz;
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set_alarm_line();
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break;
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case TIMER_CLKOUT:
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m_clkout = !m_clkout;
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devcb_call_write_line(&m_out_clkout_func, m_clkout);
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break;
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}
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}
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//-------------------------------------------------
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// read -
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//-------------------------------------------------
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READ8_MEMBER( rp5c15_device::read )
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{
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UINT8 data = 0;
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switch (offset & 0x0f)
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{
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case REGISTER_MODE:
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data = m_mode;
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break;
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case REGISTER_TEST:
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case REGISTER_RESET:
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// write only
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break;
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default:
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data = m_reg[m_mode & MODE_MASK][offset];
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break;
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}
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if (LOG) logerror("RP5C15 '%s' Register %u Read %02x\n", tag(), offset & 0x0f, data);
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return data & 0x0f;
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}
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//-------------------------------------------------
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// write -
|
||||
//-------------------------------------------------
|
||||
|
||||
WRITE8_MEMBER( rp5c15_device::write )
|
||||
{
|
||||
int mode = m_mode & MODE_MASK;
|
||||
|
||||
switch (offset & 0x0f)
|
||||
{
|
||||
case REGISTER_MODE:
|
||||
m_mode = data & 0x0f;
|
||||
|
||||
if (LOG)
|
||||
{
|
||||
logerror("RP5C15 '%s' Mode %u\n", tag(), data & MODE_MASK);
|
||||
logerror("RP5C15 '%s' Timer %s\n", tag(), (data & MODE_TIMER_EN) ? "enabled" : "disabled");
|
||||
logerror("RP5C15 '%s' Alarm %s\n", tag(), (data & MODE_ALARM_EN) ? "enabled" : "disabled");
|
||||
}
|
||||
break;
|
||||
|
||||
case REGISTER_TEST:
|
||||
if (LOG) logerror("RP5C15 '%s' Test %u not supported!\n", tag(), data);
|
||||
break;
|
||||
|
||||
case REGISTER_RESET:
|
||||
m_reset = data & 0x0f;
|
||||
|
||||
if (data & RESET_ALARM)
|
||||
{
|
||||
int i;
|
||||
|
||||
// reset alarm registers
|
||||
for (i = REGISTER_1_MINUTE; i < REGISTER_1_MONTH; i++)
|
||||
{
|
||||
m_reg[MODE01][i] = 0;
|
||||
}
|
||||
}
|
||||
|
||||
if (LOG)
|
||||
{
|
||||
if (data & RESET_ALARM) logerror("RP5C15 '%s' Alarm Reset\n", tag());
|
||||
if (data & RESET_TIMER) logerror("RP5C15 '%s' Timer Reset not supported!\n", tag());
|
||||
logerror("RP5C15 '%s' 16Hz Signal %s\n", tag(), (data & RESET_16_HZ) ? "disabled" : "enabled");
|
||||
logerror("RP5C15 '%s' 1Hz Signal %s\n", tag(), (data & RESET_1_HZ) ? "disabled" : "enabled");
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
switch (mode)
|
||||
{
|
||||
case MODE00:
|
||||
m_reg[mode][offset & 0x0f] = data & REGISTER_WRITE_MASK[mode][offset & 0x0f];
|
||||
break;
|
||||
|
||||
case MODE01:
|
||||
switch (offset & 0x0f)
|
||||
{
|
||||
case REGISTER_CLOCK_OUTPUT:
|
||||
switch (data & 0x07)
|
||||
{
|
||||
case CLKOUT_16384_HZ:
|
||||
m_clkout_timer->adjust(attotime::from_hz(clock()), 0, attotime::from_hz(clock()));
|
||||
break;
|
||||
|
||||
case CLKOUT_1024_HZ:
|
||||
m_clkout_timer->adjust(attotime::from_hz(clock() / 16), 0, attotime::from_hz(clock() / 16));
|
||||
break;
|
||||
|
||||
case CLKOUT_128_HZ:
|
||||
m_clkout_timer->adjust(attotime::from_hz(clock() / 128), 0, attotime::from_hz(clock() / 128));
|
||||
break;
|
||||
|
||||
case CLKOUT_16_HZ:
|
||||
m_clkout_timer->adjust(attotime::from_hz(clock() / 1024), 0, attotime::from_hz(clock() / 1024));
|
||||
break;
|
||||
|
||||
case CLKOUT_1_HZ:
|
||||
m_clkout_timer->adjust(attotime::from_hz(clock() / 16384), 0, attotime::from_hz(clock() / 16384));
|
||||
break;
|
||||
|
||||
case CLKOUT_1_DIV_60_HZ:
|
||||
// TODO
|
||||
break;
|
||||
|
||||
case CLKOUT_L:
|
||||
case CLKOUT_Z:
|
||||
m_clkout = 1;
|
||||
m_clkout_timer->adjust(attotime::zero, 0);
|
||||
break;
|
||||
}
|
||||
|
||||
m_reg[mode][offset & 0x0f] = data & REGISTER_WRITE_MASK[mode][offset & 0x0f];
|
||||
break;
|
||||
|
||||
case REGISTER_ADJUST:
|
||||
if (BIT(data, 0))
|
||||
{
|
||||
adjust_seconds();
|
||||
}
|
||||
m_reg[mode][offset & 0x0f] = data & REGISTER_WRITE_MASK[mode][offset & 0x0f];
|
||||
break;
|
||||
|
||||
default:
|
||||
m_reg[mode][offset & 0x0f] = data & REGISTER_WRITE_MASK[mode][offset & 0x0f];
|
||||
break;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
if (LOG) logerror("RP5C15 '%s' Register %u Write %02x\n", tag(), offset & 0x0f, data);
|
||||
break;
|
||||
}
|
||||
}
|
||||
141
src/emu/machine/rp5c15.h
Normal file
141
src/emu/machine/rp5c15.h
Normal file
@ -0,0 +1,141 @@
|
||||
/**********************************************************************
|
||||
|
||||
Ricoh RP5C15 Real Time Clock emulation
|
||||
|
||||
Copyright MESS Team.
|
||||
Visit http://mamedev.org for licensing and usage restrictions.
|
||||
|
||||
**********************************************************************
|
||||
_____ _____
|
||||
_CS 1 |* \_/ | 18 Vcc
|
||||
CS 2 | | 17 OSCOUT
|
||||
CLKOUT 3 | | 16 OSCIN
|
||||
A0 4 | RP5C15 | 15 _ALARM
|
||||
A1 5 | RF5C15 | 14 D3
|
||||
A2 6 | RJ5C15 | 13 D2
|
||||
A3 7 | | 12 D1
|
||||
_RD 8 | | 11 D0
|
||||
GND 9 |_____________| 10 _WR
|
||||
|
||||
**********************************************************************/
|
||||
|
||||
#pragma once
|
||||
|
||||
#ifndef __RP5C15__
|
||||
#define __RP5C15__
|
||||
|
||||
#include "emu.h"
|
||||
|
||||
|
||||
|
||||
//**************************************************************************
|
||||
// INTERFACE CONFIGURATION MACROS
|
||||
//**************************************************************************
|
||||
|
||||
#define MCFG_RP5C15_ADD(_tag, _clock, _config) \
|
||||
MCFG_DEVICE_ADD((_tag), RP5C15, _clock) \
|
||||
MCFG_DEVICE_CONFIG(_config)
|
||||
|
||||
|
||||
#define RP5C15_INTERFACE(name) \
|
||||
const rp5c15_interface (name) =
|
||||
|
||||
|
||||
|
||||
//**************************************************************************
|
||||
// TYPE DEFINITIONS
|
||||
//**************************************************************************
|
||||
|
||||
// ======================> rp5c15_interface
|
||||
|
||||
struct rp5c15_interface
|
||||
{
|
||||
devcb_write_line m_out_alarm_func;
|
||||
devcb_write_line m_out_clkout_func;
|
||||
};
|
||||
|
||||
|
||||
|
||||
// ======================> rp5c15_device_config
|
||||
|
||||
class rp5c15_device_config : public device_config,
|
||||
public rp5c15_interface
|
||||
{
|
||||
friend class rp5c15_device;
|
||||
|
||||
// construction/destruction
|
||||
rp5c15_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();
|
||||
};
|
||||
|
||||
|
||||
|
||||
// ======================> rp5c15_device
|
||||
|
||||
class rp5c15_device : public device_t
|
||||
{
|
||||
friend class rp5c15_device_config;
|
||||
|
||||
// construction/destruction
|
||||
rp5c15_device(running_machine &_machine, const rp5c15_device_config &_config);
|
||||
|
||||
public:
|
||||
DECLARE_READ8_MEMBER( read );
|
||||
DECLARE_WRITE8_MEMBER( write );
|
||||
DECLARE_WRITE_LINE_MEMBER( adj_w );
|
||||
|
||||
protected:
|
||||
// device-level overrides
|
||||
virtual void device_start();
|
||||
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
|
||||
|
||||
private:
|
||||
inline void set_alarm_line();
|
||||
inline int read_counter(int counter);
|
||||
inline void write_counter(int counter, int value);
|
||||
inline void advance_seconds();
|
||||
inline void advance_minutes();
|
||||
inline void adjust_seconds();
|
||||
inline void check_alarm();
|
||||
|
||||
static const device_timer_id TIMER_CLOCK = 0;
|
||||
static const device_timer_id TIMER_16HZ = 1;
|
||||
static const device_timer_id TIMER_CLKOUT = 2;
|
||||
|
||||
devcb_resolved_write_line m_out_alarm_func;
|
||||
devcb_resolved_write_line m_out_clkout_func;
|
||||
|
||||
UINT8 m_reg[2][13]; // clock registers
|
||||
UINT8 m_ram[13]; // RAM
|
||||
|
||||
UINT8 m_mode; // mode register
|
||||
UINT8 m_reset; // reset register
|
||||
int m_alarm; // alarm output
|
||||
int m_alarm_on; // alarm condition
|
||||
int m_1hz; // 1 Hz condition
|
||||
int m_16hz; // 16 Hz condition
|
||||
int m_clkout; // clock output
|
||||
|
||||
// timers
|
||||
emu_timer *m_clock_timer;
|
||||
emu_timer *m_16hz_timer;
|
||||
emu_timer *m_clkout_timer;
|
||||
|
||||
const rp5c15_device_config &m_config;
|
||||
};
|
||||
|
||||
|
||||
// device type definition
|
||||
extern const device_type RP5C15;
|
||||
|
||||
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user