// license:BSD-3-Clause // copyright-holders:Miodrag Milanovic /*************************************************************************** RC2014 Real Time Clock ****************************************************************************/ #include "emu.h" #include "rtc.h" #include "machine/ds1302.h" namespace { //************************************************************************** // RC2014 Real Time Clock DS1302 module // Module author: Ed Brindley //************************************************************************** class rc2014_ds1302_device : public device_t, public device_rc2014_card_interface { public: // construction/destruction rc2014_ds1302_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock); protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; virtual void device_add_mconfig(machine_config &config) override; virtual ioport_constructor device_input_ports() const override; uint8_t rtc_r(offs_t offset); void rtc_w(offs_t offset, uint8_t data); private: required_device m_rtc; required_ioport m_addr; }; rc2014_ds1302_device::rc2014_ds1302_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock) : device_t(mconfig, RC2014_DS1302_RTC, tag, owner, clock) , device_rc2014_card_interface(mconfig, *this) , m_rtc(*this, "rtc") , m_addr(*this, "SW1") { } void rc2014_ds1302_device::device_start() { } void rc2014_ds1302_device::device_reset() { // A15-A8, A1 and A0 not connected m_bus->installer(AS_IO)->install_readwrite_handler(m_addr->read(), m_addr->read(), 0, 0xff03, 0, read8sm_delegate(*this, FUNC(rc2014_ds1302_device::rtc_r)), write8sm_delegate(*this, FUNC(rc2014_ds1302_device::rtc_w))); } void rc2014_ds1302_device::device_add_mconfig(machine_config &config) { DS1302(config, m_rtc, 32.768_kHz_XTAL); } uint8_t rc2014_ds1302_device::rtc_r(offs_t offset) { return m_rtc->io_r() ? 0x01 : 0x00; } void rc2014_ds1302_device::rtc_w(offs_t, uint8_t data) { m_rtc->ce_w(BIT(data,4)); if (BIT(data,5)==0) m_rtc->io_w(BIT(data,7)); m_rtc->sclk_w(BIT(data,6)); } static INPUT_PORTS_START( rc2014_ds1302_jumpers ) PORT_START("SW1") PORT_DIPNAME(0x04, 0x00, "0x04") PORT_DIPLOCATION("Base Address:1") PORT_DIPSETTING(0x00, DEF_STR( Off ) ) PORT_DIPSETTING(0x04, DEF_STR( On ) ) PORT_DIPNAME(0x08, 0x00, "0x08") PORT_DIPLOCATION("Base Address:2") PORT_DIPSETTING(0x00, DEF_STR( Off ) ) PORT_DIPSETTING(0x08, DEF_STR( On ) ) PORT_DIPNAME(0x10, 0x00, "0x10") PORT_DIPLOCATION("Base Address:3") PORT_DIPSETTING(0x00, DEF_STR( Off ) ) PORT_DIPSETTING(0x10, DEF_STR( On ) ) PORT_DIPNAME(0x20, 0x00, "0x20") PORT_DIPLOCATION("Base Address:4") PORT_DIPSETTING(0x00, DEF_STR( Off ) ) PORT_DIPSETTING(0x20, DEF_STR( On ) ) PORT_DIPNAME(0x40, 0x40, "0x40") PORT_DIPLOCATION("Base Address:5") PORT_DIPSETTING(0x00, DEF_STR( Off ) ) PORT_DIPSETTING(0x40, DEF_STR( On ) ) PORT_DIPNAME(0x80, 0x80, "0x80") PORT_DIPLOCATION("Base Address:6") PORT_DIPSETTING(0x00, DEF_STR( Off ) ) PORT_DIPSETTING(0x80, DEF_STR( On ) ) INPUT_PORTS_END ioport_constructor rc2014_ds1302_device::device_input_ports() const { return INPUT_PORTS_NAME( rc2014_ds1302_jumpers ); } } //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** DEFINE_DEVICE_TYPE_PRIVATE(RC2014_DS1302_RTC, device_rc2014_card_interface, rc2014_ds1302_device, "rc2014_ds1302", "RC2014 Real Time Clock DS1302 module")