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-rw-r--r--src/devices/bus/archimedes/podule/serial.cpp156
1 files changed, 156 insertions, 0 deletions
diff --git a/src/devices/bus/archimedes/podule/serial.cpp b/src/devices/bus/archimedes/podule/serial.cpp
new file mode 100644
index 00000000000..dff0fa826f9
--- /dev/null
+++ b/src/devices/bus/archimedes/podule/serial.cpp
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+// license:BSD-3-Clause
+// copyright-holders:Nigel Barnes
+/**********************************************************************
+
+ Atomwide Serial Expansion Card
+
+ http://chrisacorns.computinghistory.org.uk/32bit_UpgradesA2G/Atomwide_SerialExp.html
+
+**********************************************************************/
+
+#include "emu.h"
+#include "serial.h"
+#include "machine/ins8250.h"
+#include "bus/rs232/rs232.h"
+
+
+namespace {
+
+// ======================> arc_serial_device
+
+class arc_serial_device :
+ public device_t,
+ public device_archimedes_podule_interface
+{
+public:
+ // construction/destruction
+ arc_serial_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;
+
+ // optional information overrides
+ virtual void device_add_mconfig(machine_config &config) override;
+ virtual const tiny_rom_entry *device_rom_region() const override;
+
+ // device_archimedes_podule_interface overrides
+ virtual void ioc_map(address_map &map) override;
+
+private:
+ required_memory_region m_podule_rom;
+
+ u8 m_rom_page;
+};
+
+
+void arc_serial_device::ioc_map(address_map &map)
+{
+ map(0x0000, 0x1fff).lr8(NAME([this](offs_t offset) { return m_podule_rom->base()[offset | ((m_rom_page << 11) & 0xf800)]; })).umask32(0x000000ff);
+ map(0x2000, 0x201f).rw("uart2", FUNC(ns16550_device::ins8250_r), FUNC(ns16550_device::ins8250_w)).umask32(0x000000ff);
+ map(0x2400, 0x241f).rw("uart1", FUNC(ns16550_device::ins8250_r), FUNC(ns16550_device::ins8250_w)).umask32(0x000000ff);
+ map(0x2800, 0x281f).rw("uart0", FUNC(ns16550_device::ins8250_r), FUNC(ns16550_device::ins8250_w)).umask32(0x000000ff);
+ map(0x3c00, 0x3c00).lw8(NAME([this](u8 data) { m_rom_page = data; }));
+}
+
+
+//-------------------------------------------------
+// ROM( serial )
+//-------------------------------------------------
+
+ROM_START( serial )
+ ROM_REGION(0x10000, "podule_rom", 0)
+ ROM_LOAD("atomwide_serial.rom", 0x0000, 0x10000, CRC(2dcf3b28) SHA1(c100cc4f5e3d87233e6db6a1da04ac7c19ac2357))
+ROM_END
+
+const tiny_rom_entry *arc_serial_device::device_rom_region() const
+{
+ return ROM_NAME( serial );
+}
+
+
+//-------------------------------------------------
+// device_add_mconfig - add device configuration
+//-------------------------------------------------
+
+void arc_serial_device::device_add_mconfig(machine_config &config)
+{
+ ns16550_device &uart0(NS16550(config, "uart0", 7.3728_MHz_XTAL));
+ uart0.out_tx_callback().set("serial0", FUNC(rs232_port_device::write_txd));
+ uart0.out_dtr_callback().set("serial0", FUNC(rs232_port_device::write_dtr));
+ uart0.out_rts_callback().set("serial0", FUNC(rs232_port_device::write_rts));
+
+ rs232_port_device &serial0(RS232_PORT(config, "serial0", default_rs232_devices, nullptr));
+ serial0.rxd_handler().set("uart0", FUNC(ns16550_device::rx_w));
+ serial0.dcd_handler().set("uart0", FUNC(ns16550_device::dcd_w));
+ serial0.dsr_handler().set("uart0", FUNC(ns16550_device::dsr_w));
+ serial0.cts_handler().set("uart0", FUNC(ns16550_device::cts_w));
+
+ ns16550_device &uart1(NS16550(config, "uart1", 7.3728_MHz_XTAL));
+ uart1.out_tx_callback().set("serial1", FUNC(rs232_port_device::write_txd));
+ uart1.out_dtr_callback().set("serial1", FUNC(rs232_port_device::write_dtr));
+ uart1.out_rts_callback().set("serial1", FUNC(rs232_port_device::write_rts));
+
+ rs232_port_device &serial1(RS232_PORT(config, "serial1", default_rs232_devices, nullptr));
+ serial1.rxd_handler().set("uart1", FUNC(ns16550_device::rx_w));
+ serial1.dcd_handler().set("uart1", FUNC(ns16550_device::dcd_w));
+ serial1.dsr_handler().set("uart1", FUNC(ns16550_device::dsr_w));
+ serial1.cts_handler().set("uart1", FUNC(ns16550_device::cts_w));
+
+ ns16550_device &uart2(NS16550(config, "uart2", 7.3728_MHz_XTAL));
+ uart2.out_tx_callback().set("serial2", FUNC(rs232_port_device::write_txd));
+ uart2.out_dtr_callback().set("serial2", FUNC(rs232_port_device::write_dtr));
+ uart2.out_rts_callback().set("serial2", FUNC(rs232_port_device::write_rts));
+
+ rs232_port_device &serial2(RS232_PORT(config, "serial2", default_rs232_devices, nullptr));
+ serial2.rxd_handler().set("uart2", FUNC(ns16550_device::rx_w));
+ serial2.dcd_handler().set("uart2", FUNC(ns16550_device::dcd_w));
+ serial2.dsr_handler().set("uart2", FUNC(ns16550_device::dsr_w));
+ serial2.cts_handler().set("uart2", FUNC(ns16550_device::cts_w));
+}
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// arc_serial_device - constructor
+//-------------------------------------------------
+
+arc_serial_device::arc_serial_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+ : device_t(mconfig, ARC_SERIAL, tag, owner, clock)
+ , device_archimedes_podule_interface(mconfig, *this)
+ , m_podule_rom(*this, "podule_rom")
+ , m_rom_page(0)
+{
+}
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void arc_serial_device::device_start()
+{
+ save_item(NAME(m_rom_page));
+}
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void arc_serial_device::device_reset()
+{
+ m_rom_page = 0x00;
+}
+
+} // anonymous namespace
+
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+DEFINE_DEVICE_TYPE_PRIVATE(ARC_SERIAL, device_archimedes_podule_interface, arc_serial_device, "arc_serial", "Atomwide Serial Expansion Card")