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// license:BSD-3-Clause
// copyright-holders:Nigel Barnes
/**********************************************************************
Opus Discovery disc system
**********************************************************************/
#ifndef MAME_BUS_SPECTRUM_OPUS_H
#define MAME_BUS_SPECTRUM_OPUS_H
#include "exp.h"
#include "softlist.h"
#include "imagedev/floppy.h"
#include "machine/wd_fdc.h"
#include "machine/6821pia.h"
#include "bus/centronics/ctronics.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
class spectrum_opus_device:
public device_t,
public device_spectrum_expansion_interface
{
public:
// construction/destruction
spectrum_opus_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
static void floppy_formats(format_registration &fr);
protected:
// device-level overrides
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
// optional information overrides
virtual void device_add_mconfig(machine_config &config) override ATTR_COLD;
virtual ioport_constructor device_input_ports() const override ATTR_COLD;
virtual const tiny_rom_entry *device_rom_region() const override ATTR_COLD;
virtual void post_opcode_fetch(offs_t offset) override;
virtual uint8_t mreq_r(offs_t offset) override;
virtual void mreq_w(offs_t offset, uint8_t data) override;
virtual uint8_t iorq_r(offs_t offset) override;
virtual bool romcs() override;
// passthru
virtual void pre_opcode_fetch(offs_t offset) override { m_exp->pre_opcode_fetch(offset); }
virtual void pre_data_fetch(offs_t offset) override { m_exp->pre_data_fetch(offset); }
virtual void post_data_fetch(offs_t offset) override { m_exp->post_data_fetch(offset); }
virtual void iorq_w(offs_t offset, uint8_t data) override { m_exp->iorq_w(offset, data); }
private:
void pia_out_a(uint8_t data);
void pia_out_b(uint8_t data);
void busy_w(int state);
required_ioport m_joy;
required_memory_region m_rom;
required_device<pia6821_device> m_pia;
required_device<wd_fdc_device_base> m_fdc;
required_device_array<floppy_connector, 2> m_floppy;
required_device<centronics_device> m_centronics;
required_device<spectrum_expansion_slot_device> m_exp;
bool m_romcs;
uint8_t m_ram[4 * 1024];
};
// device type definition
DECLARE_DEVICE_TYPE(SPECTRUM_OPUS, spectrum_opus_device)
#endif // MAME_BUS_SPECTRUM_OPUS_H
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