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Diffstat (limited to 'src/devices/bus/rc2014/rtc.cpp')
-rw-r--r--src/devices/bus/rc2014/rtc.cpp107
1 files changed, 107 insertions, 0 deletions
diff --git a/src/devices/bus/rc2014/rtc.cpp b/src/devices/bus/rc2014/rtc.cpp
new file mode 100644
index 00000000000..4e8659c2771
--- /dev/null
+++ b/src/devices/bus/rc2014/rtc.cpp
@@ -0,0 +1,107 @@
+// 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, u32 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<ds1302_device> m_rtc;
+ required_ioport m_addr;
+};
+
+rc2014_ds1302_device::rc2014_ds1302_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 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")