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-rw-r--r--src/devices/bus/bbc/tube/tube_z80.h69
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diff --git a/src/devices/bus/bbc/tube/tube_z80.h b/src/devices/bus/bbc/tube/tube_z80.h
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+++ b/src/devices/bus/bbc/tube/tube_z80.h
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+// license:BSD-3-Clause
+// copyright-holders:Nigel Barnes
+/**********************************************************************
+
+ Acorn ANC04 Z80 2nd processor
+
+ http://chrisacorns.computinghistory.org.uk/8bit_Upgrades/Acorn_ANC04_Z802ndproc.html
+
+**********************************************************************/
+
+
+#ifndef MAME_BUS_BBC_TUBE_Z80_H
+#define MAME_BUS_BBC_TUBE_Z80_H
+
+#include "tube.h"
+#include "cpu/z80/z80.h"
+#include "machine/ram.h"
+#include "machine/tube.h"
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> bbc_tube_z80_device
+
+class bbc_tube_z80_device :
+ public device_t,
+ public device_bbc_tube_interface
+{
+public:
+ // construction/destruction
+ bbc_tube_z80_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+ DECLARE_READ8_MEMBER( mem_r );
+ DECLARE_WRITE8_MEMBER( mem_w );
+ DECLARE_READ8_MEMBER( io_r );
+ DECLARE_WRITE8_MEMBER( io_w );
+
+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;
+
+ virtual DECLARE_READ8_MEMBER( host_r ) override;
+ virtual DECLARE_WRITE8_MEMBER( host_w ) override;
+
+private:
+ IRQ_CALLBACK_MEMBER( irq_callback );
+ DECLARE_WRITE_LINE_MEMBER( nmi_w );
+
+ required_device<cpu_device> m_z80;
+ required_device<tube_device> m_ula;
+ required_device<ram_device> m_ram;
+ required_memory_region m_rom;
+
+ bool m_rom_enabled;
+ int m_nmiserv;
+};
+
+
+// device type definition
+DECLARE_DEVICE_TYPE(BBC_TUBE_Z80, bbc_tube_z80_device)
+
+
+#endif /* MAME_BUS_BBC_TUBE_Z80_H */