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diff --git a/src/devices/bus/abcbus/ssa.h b/src/devices/bus/abcbus/ssa.h
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+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+/**********************************************************************
+
+ Luxor ABC-80 Owoco Super Smartaid cartridge emulation
+
+*********************************************************************/
+
+#ifndef MAME_BUS_ABCBUS_SSA_H
+#define MAME_BUS_ABCBUS_SSA_H
+
+#pragma once
+
+#include "abcbus.h"
+#include "machine/nvram.h"
+
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> super_smartaid_t
+
+class super_smartaid_t : public device_t,
+ public device_abcbus_card_interface,
+ public device_nvram_interface
+{
+public:
+ // construction/destruction
+ super_smartaid_t(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+ // optional information overrides
+ virtual void device_add_mconfig(machine_config &config) override;
+ virtual const tiny_rom_entry *device_rom_region() const override;
+
+protected:
+ // device-level overrides
+ virtual void device_start() override;
+ virtual void device_reset() override;
+
+ // device_nvram_interface overrides
+ virtual void nvram_default() override { }
+ virtual void nvram_read(emu_file &file) override { if (m_nvram != nullptr) { file.read(m_nvram, m_nvram.bytes()); } }
+ virtual void nvram_write(emu_file &file) override { if (m_nvram != nullptr) { file.write(m_nvram, m_nvram.bytes()); } }
+
+ // device_abcbus_interface overrides
+ virtual void abcbus_cs(uint8_t data) override { m_bus->write_cs(data); }
+ virtual uint8_t abcbus_inp() override { return m_bus->read_inp(); }
+ virtual void abcbus_out(uint8_t data) override { m_bus->write_out(data); }
+ virtual uint8_t abcbus_stat() override { return m_bus->read_stat(); }
+ virtual void abcbus_c1(uint8_t data) override { m_bus->write_c1(data); }
+ virtual void abcbus_c2(uint8_t data) override { m_bus->write_c2(data); }
+ virtual void abcbus_c3(uint8_t data) override { m_bus->write_c3(data); }
+ virtual void abcbus_c4(uint8_t data) override { m_bus->write_c4(data); }
+ virtual uint8_t abcbus_xmemfl(offs_t offset) override;
+ virtual void abcbus_xmemw(offs_t offset, uint8_t data) override;
+
+private:
+ required_device<abcbus_slot_device> m_bus;
+ required_memory_region m_rom_1;
+ required_memory_region m_rom_2;
+ required_memory_region m_prom;
+ optional_shared_ptr<uint8_t> m_nvram;
+ uint8_t m_rom_bank;
+ uint8_t m_prom_bank;
+};
+
+
+// device type definition
+DECLARE_DEVICE_TYPE(SUPER_SMARTAID, super_smartaid_t)
+
+#endif // MAME_BUS_ABCBUS_SSA_H