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// license:BSD-3-Clause
// copyright-holders:AJR
/*********************************************************************
CCS Model 7710 Asynchronous Serial Interface
*********************************************************************/
#ifndef MAME_BUS_A2BUS_CCS7710_H
#define MAME_BUS_A2BUS_CCS7710_H
#pragma once
#include "a2bus.h"
#include "machine/6850acia.h"
#include "machine/f4702.h"
class ccs7710_device : public device_t, public device_a2bus_card_interface
{
public:
// device type constructor
ccs7710_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
protected:
// device-level overrides
virtual void device_start() override;
virtual ioport_constructor device_input_ports() const override;
virtual void device_add_mconfig(machine_config &config) override;
virtual const tiny_rom_entry *device_rom_region() const override;
// device_a2bus_card_interface overrides
virtual u8 read_c0nx(u8 offset) override;
virtual void write_c0nx(u8 offset, u8 data) override;
virtual u8 read_cnxx(u8 offset) override;
virtual bool take_c800() override { return false; }
private:
// miscellaneous handlers
DECLARE_WRITE_LINE_MEMBER(acia_irq_w);
DECLARE_WRITE_LINE_MEMBER(external_clock_w);
u8 baud_select_r(offs_t offset);
// object finders
required_device<acia6850_device> m_acia;
required_device<f4702_device> m_brg;
required_region_ptr<u8> m_firmware;
required_ioport m_baud_select;
// internal state
bool m_external_clock;
};
// device type declaration
DECLARE_DEVICE_TYPE(A2BUS_CCS7710, ccs7710_device)
#endif // MAME_BUS_A2BUS_CCS7710_H
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