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-rw-r--r--src/devices/bus/a2bus/uthernet.cpp67
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diff --git a/src/devices/bus/a2bus/uthernet.cpp b/src/devices/bus/a2bus/uthernet.cpp
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+// license:BSD-3-Clause
+// copyright-holders:R. Belmont
+/*********************************************************************
+
+ uthernet.cpp
+
+ Apple II Uthernet Card
+
+*********************************************************************/
+
+#include "emu.h"
+#include "uthernet.h"
+
+#include "machine/cs8900a.h"
+
+namespace {
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+class a2bus_uthernet_device:
+ public device_t,
+ public device_a2bus_card_interface
+{
+public:
+ // construction/destruction
+ a2bus_uthernet_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
+ a2bus_uthernet_device(mconfig, A2BUS_UTHERNET, tag, owner, clock)
+ {
+ }
+
+protected:
+ a2bus_uthernet_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) :
+ device_t(mconfig, type, tag, owner, clock),
+ device_a2bus_card_interface(mconfig, *this),
+ m_netinf(*this, "cs8900a")
+ {
+ }
+
+ virtual void device_add_mconfig(machine_config &config) override
+ {
+ CS8900A(config, m_netinf, 20_MHz_XTAL); // see CS8900A data sheet sec 3.13
+ }
+
+ virtual void device_start() override { }
+ virtual void device_reset() override { }
+
+ // read_c0nx - called for reads from this card's c0nx space
+ virtual uint8_t read_c0nx(uint8_t offset) override { return m_netinf->read(offset); }
+
+ // write_c0nx - called for writes to this card's c0nx space
+ virtual void write_c0nx(uint8_t offset, uint8_t data) override { m_netinf->write(offset,data); }
+
+private:
+ required_device<cs8900a_device> m_netinf;
+
+};
+
+} // anonymous namespace
+
+
+//**************************************************************************
+// GLOBAL VARIABLES
+//**************************************************************************
+
+DEFINE_DEVICE_TYPE_PRIVATE(A2BUS_UTHERNET, device_a2bus_card_interface, a2bus_uthernet_device, "a2uthernet", "a2RetroSystems Uthernet")