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https://github.com/holub/mame
synced 2025-04-19 15:11:37 +03:00
Added ICM7170 real-time clock device. [R. Belmont]
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arbee
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@ -1443,6 +1443,18 @@ if (MACHINES["I80130"]~=null) then
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}
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end
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---------------------------------------------------
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--
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--@src/devices/machine/icm7170.h,MACHINES["ICM7170"] = true
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---------------------------------------------------
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if (MACHINES["ICM7170"]~=null) then
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files {
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MAME_DIR .. "src/devices/machine/icm7170.cpp",
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MAME_DIR .. "src/devices/machine/icm7170.h",
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}
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end
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---------------------------------------------------
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--
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--@src/devices/machine/idectrl.h,MACHINES["IDECTRL"] = true
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@ -511,6 +511,7 @@ MACHINES["I8271"] = true
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MACHINES["I8279"] = true
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MACHINES["I8291A"] = true
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MACHINES["I8355"] = true
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MACHINES["ICM7170"] = true
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MACHINES["IDECTRL"] = true
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MACHINES["IE15"] = true
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MACHINES["IM6402"] = true
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149
src/devices/machine/icm7170.cpp
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149
src/devices/machine/icm7170.cpp
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@ -0,0 +1,149 @@
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// license:BSD-3-Clause
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// copyright-holders:R. Belmont
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/**********************************************************************
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Intersil/Renesas ICM7170 Real Time Clock
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*********************************************************************/
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#include "emu.h"
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#include "icm7170.h"
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#include "coreutil.h"
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#define VERBOSE (1)
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#include "logmacro.h"
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DEFINE_DEVICE_TYPE(ICM7170, icm7170_device, "icm7170", "Intersil/Renesas ICM7170 Real Time Clock")
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// internal registers
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enum
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{
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REG_CNT_100TH_SEC = 0,
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REG_CNT_HOURS,
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REG_CNT_MINUTES,
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REG_CNT_SECONDS,
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REG_CNT_MONTH,
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REG_CNT_DAY,
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REG_CNT_YEAR,
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REG_CNT_DAY_OF_WEEK,
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REG_RAM_100TH_SEC,
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REG_RAM_HOURS,
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REG_RAM_MINUTES,
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REG_RAM_SECONDS,
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REG_RAM_MONTH,
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REG_RAM_DAY,
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REG_RAM_YEAR,
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REG_RAM_DAY_OF_WEEK,
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REG_INT_STATUS_MASK,
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REG_COMMAND
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};
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static constexpr int ICM7170_TIMER_ID = 0;
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// icm7170_device - constructor
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//-------------------------------------------------
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icm7170_device::icm7170_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: device_t(mconfig, ICM7170, tag, owner, clock),
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device_rtc_interface(mconfig, *this),
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device_nvram_interface(mconfig, *this),
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m_out_irq_cb(*this)
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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 icm7170_device::device_start()
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{
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// resolve callbacks
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m_out_irq_cb.resolve_safe();
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m_timer = timer_alloc(ICM7170_TIMER_ID);
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m_timer->adjust(attotime::never);
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save_item(NAME(m_regs));
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}
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//-------------------------------------------------
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// device_timer - handles timer events
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//-------------------------------------------------
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void icm7170_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
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{
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}
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//-------------------------------------------------
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// rtc_clock_updated - called when the host time changes
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//-------------------------------------------------
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void icm7170_device::rtc_clock_updated(int year, int month, int day, int day_of_week, int hour, int minute, int second)
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{
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}
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//-------------------------------------------------
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// nvram_default - called to initialize NVRAM to
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// its default state
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//-------------------------------------------------
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void icm7170_device::nvram_default()
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{
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memset(m_regs, 0, 0x20);
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}
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//-------------------------------------------------
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// nvram_read - called to read NVRAM from the
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// .nv file
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//-------------------------------------------------
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void icm7170_device::nvram_read(emu_file &file)
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{
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file.read(m_regs, 0x20);
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}
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//-------------------------------------------------
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// nvram_write - called to write NVRAM to the
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// .nv file
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//-------------------------------------------------
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void icm7170_device::nvram_write(emu_file &file)
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{
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file.write(m_regs, 0x20);
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}
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// non-inherited device functions
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READ8_MEMBER( icm7170_device::read )
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{
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uint8_t data = m_regs[offset & 0x1f];
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LOG("ICM7170 Register %d Read %02x\n", offset, data);
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return data;
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}
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WRITE8_MEMBER( icm7170_device::write )
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{
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switch (offset & 0x1f)
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{
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default:
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m_regs[offset & 0x1f] = data;
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LOG("ICM7170 Register %d Write %02x\n", offset & 0x1f, data);
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break;
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}
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}
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void icm7170_device::recalc_irqs()
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{
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}
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85
src/devices/machine/icm7170.h
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85
src/devices/machine/icm7170.h
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@ -0,0 +1,85 @@
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// license:BSD-3-Clause
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// copyright-holders:R. Belmont
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/**********************************************************************
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Intersil/Renesas ICM7170 Real Time Clock
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**********************************************************************
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PDIP package:
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_____ _____
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_WR 1 | \_/ | 24 _RD
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ALE 2 | | 23 VDD
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_CS 3 | | 22 D7
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A4 4 | ICM7170 | 21 D6
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A3 5 | | 20 D5
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A2 6 | | 19 D4
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A1 7 | | 18 D3
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A0 8 | | 17 D2
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OSC OUT 9 | | 16 D1
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OSC IN 10 | | 15 D0
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INT SOURCE 11 | | 14 VBACKUP
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/INTERRUPT 12 |_____________| 13 VSS (GND)
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SOIC package:
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_____ _____
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A1 1 | \_/ | 24 A2
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A0 2 | | 23 A3
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OSC OUT 3 | | 22 A4
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OSC IN 4 | ICM7170 | 21 _CS
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INT SOURCE 5 | | 20 ALE
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/INTERRUPT 6 | | 19 _WR
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VSS 7 | | 18 _RD
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VBACKUP 8 | | 17 VDD
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D0 9 | | 16 D7
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D1 10 | | 15 D6
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D2 11 | | 14 D5
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D3 12 |_____________| 13 D4
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**********************************************************************/
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#ifndef MAME_MACHINE_ICM7170_H
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#define MAME_MACHINE_ICM7170_H
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#pragma once
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#include "dirtc.h"
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class icm7170_device : public device_t,
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public device_rtc_interface,
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public device_nvram_interface
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{
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public:
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// construction/destruction
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icm7170_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
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auto irq() { return m_out_irq_cb.bind(); }
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DECLARE_READ8_MEMBER( read );
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DECLARE_WRITE8_MEMBER( write );
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protected:
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// device-level overrides
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virtual void device_start() override;
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virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
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// device_rtc_interface overrides
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virtual void rtc_clock_updated(int year, int month, int day, int day_of_week, int hour, int minute, int second) override;
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// device_nvram_interface overrides
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virtual void nvram_default() override;
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virtual void nvram_read(emu_file &file) override;
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virtual void nvram_write(emu_file &file) override;
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private:
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void recalc_irqs();
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devcb_write_line m_out_irq_cb;
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uint8_t m_regs[0x20];
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emu_timer *m_timer;
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};
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DECLARE_DEVICE_TYPE(ICM7170, icm7170_device)
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#endif // MAME_MACHINE_ICM7170_H
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@ -59,6 +59,7 @@
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#include "cpu/m68000/m68000.h"
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#include "cpu/mcs51/mcs51.h"
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#include "machine/gen_latch.h"
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#include "machine/icm7170.h"
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#include "machine/nvram.h"
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#include "machine/timer.h"
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#include "video/bt47x.h"
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@ -78,7 +79,8 @@ public:
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m_iocpu(*this, "iocpu"),
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m_mainram(*this, "extram"),
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m_extram(*this, "extram"),
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m_vram(*this, "vram")
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m_vram(*this, "vram"),
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m_rtc(*this, "rtc")
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{ }
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void wxstar4k(machine_config &config);
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@ -102,6 +104,7 @@ private:
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optional_device<m68010_device> m_maincpu, m_gfxcpu;
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optional_device<mcs51_cpu_device> m_gfxsubcpu, m_datacpu, m_iocpu;
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optional_shared_ptr<uint16_t> m_mainram, m_extram, m_vram;
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required_device<icm7170_device> m_rtc;
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DECLARE_READ16_MEMBER(buserr_r)
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{
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@ -255,6 +258,8 @@ void wxstar4k_state::wxstar4k(machine_config &config)
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screen.set_palette("palette");
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PALETTE(config, "palette").set_format(palette_device::xBGR_888, 256);
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ICM7170(config, m_rtc, XTAL(32'768));
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}
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ROM_START( wxstar4k )
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