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diff --git a/src/devices/bus/archimedes/podule/a448.cpp b/src/devices/bus/archimedes/podule/a448.cpp
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+// license:BSD-3-Clause
+// copyright-holders:Nigel Barnes
+/**********************************************************************
+
+ Armadillo Systems A448 Sound Sampler
+
+ http://chrisacorns.computinghistory.org.uk/32bit_UpgradesA2G/Armadillo_A448.html
+
+ TODO:
+ - everything, requires driver software to determine how hardware is accessed.
+
+**********************************************************************/
+
+#include "emu.h"
+#include "a448.h"
+#include "bus/midi/midi.h"
+
+
+namespace {
+
+// ======================> arc_a448_device
+
+class arc_a448_device :
+ public device_t,
+ public device_archimedes_podule_interface
+{
+public:
+ static constexpr feature_type unemulated_features() { return feature::CAPTURE; }
+
+ // construction/destruction
+ arc_a448_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+
+protected:
+ arc_a448_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock);
+
+ // device-level overrides
+ virtual void device_start() 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;
+};
+
+
+// ======================> arc_a448b_device
+
+class arc_a448b_device : public arc_a448_device
+{
+public:
+ // construction/destruction
+ arc_a448b_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+
+protected:
+ // optional information overrides
+ virtual void device_add_mconfig(machine_config &config) override;
+ virtual const tiny_rom_entry *device_rom_region() const override;
+};
+
+
+void arc_a448_device::ioc_map(address_map &map)
+{
+ map(0x0000, 0x1fff).lr8(NAME([this](offs_t offset) { return m_podule_rom->base()[offset]; })).umask32(0x000000ff);
+}
+
+
+//-------------------------------------------------
+// ROM( a448 )
+//-------------------------------------------------
+
+ROM_START( a448 )
+ ROM_REGION(0x1000, "podule_rom", 0)
+ ROM_LOAD("a448.rom", 0x0000, 0x1000, CRC(e1988e76) SHA1(8140e9cf82dc67324963766d33efd5c8ad6d53f8))
+ROM_END
+
+ROM_START( a448b )
+ ROM_REGION(0x4000, "podule_rom", 0)
+ ROM_LOAD("a448b_midi.rom", 0x0000, 0x4000, CRC(864f7967) SHA1(125b5a505498d91ca049f95fd05e693b2396bda6))
+ROM_END
+
+const tiny_rom_entry *arc_a448_device::device_rom_region() const
+{
+ return ROM_NAME( a448 );
+}
+
+const tiny_rom_entry *arc_a448b_device::device_rom_region() const
+{
+ return ROM_NAME( a448b );
+}
+
+
+//-------------------------------------------------
+// device_add_mconfig - add device configuration
+//-------------------------------------------------
+
+void arc_a448_device::device_add_mconfig(machine_config &config)
+{
+ //ZN448(config, "zn448", 0);
+}
+
+void arc_a448b_device::device_add_mconfig(machine_config &config)
+{
+ arc_a448_device::device_add_mconfig(config);
+
+ midi_port_device &mdin(MIDI_PORT(config, "mdin", midiin_slot, "midiin"));
+ mdin.rxd_handler().set("mdthru", FUNC(midi_port_device::write_txd));
+ midiout_slot(MIDI_PORT(config, "mdthru"));
+ midiout_slot(MIDI_PORT(config, "mdout"));
+}
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// arc_a448_device - constructor
+//-------------------------------------------------
+
+arc_a448_device::arc_a448_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock)
+ : device_t(mconfig, type, tag, owner, clock)
+ , device_archimedes_podule_interface(mconfig, *this)
+ , m_podule_rom(*this, "podule_rom")
+{
+}
+
+arc_a448_device::arc_a448_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+ : arc_a448_device(mconfig, ARC_A448, tag, owner, clock)
+{
+}
+
+arc_a448b_device::arc_a448b_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+ : arc_a448_device(mconfig, ARC_A448B, tag, owner, clock)
+{
+}
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void arc_a448_device::device_start()
+{
+}
+
+} // anonymous namespace
+
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+DEFINE_DEVICE_TYPE_PRIVATE(ARC_A448, device_archimedes_podule_interface, arc_a448_device, "arc_a448", "Armadillo Systems A448 Sound Sampler")
+DEFINE_DEVICE_TYPE_PRIVATE(ARC_A448B, device_archimedes_podule_interface, arc_a448b_device, "arc_a448b", "Armadillo Systems A448b Stereo MIDI Sound Sampler")