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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
ColecoVision controller port emulation
**********************************************************************
**********************************************************************/
#ifndef MAME_BUS_COLECO_CTRL_H
#define MAME_BUS_COLECO_CTRL_H
#pragma once
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_COLECOVISION_CONTROL_PORT_ADD(_tag, _slot_intf, _def_slot) \
MCFG_DEVICE_ADD(_tag, COLECOVISION_CONTROL_PORT, 0) \
MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, false)
#define MCFG_COLECOVISION_CONTROL_PORT_IRQ_CALLBACK(_write) \
devcb = &colecovision_control_port_device::set_irq_wr_callback(*device, DEVCB_##_write);
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
class colecovision_control_port_device;
// ======================> device_colecovision_control_port_interface
class device_colecovision_control_port_interface : public device_slot_card_interface
{
public:
virtual uint8_t joy_r() { return 0xff; }
virtual void common0_w(int state) { m_common0 = state; }
virtual void common1_w(int state) { m_common1 = state; }
protected:
// construction/destruction
device_colecovision_control_port_interface(const machine_config &mconfig, device_t &device);
colecovision_control_port_device *m_port;
int m_common0;
int m_common1;
};
// ======================> colecovision_control_port_device
class colecovision_control_port_device : public device_t,
public device_slot_interface
{
public:
// construction/destruction
colecovision_control_port_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// static configuration helpers
template <class Object> static devcb_base &set_irq_wr_callback(device_t &device, Object &&cb) { return downcast<colecovision_control_port_device &>(device).m_write_irq.set_callback(std::forward<Object>(cb)); }
// computer interface
uint8_t read() { uint8_t data = 0xff; if (exists()) data = m_device->joy_r(); return data; }
DECLARE_READ8_MEMBER( read ) { return read(); }
DECLARE_WRITE_LINE_MEMBER( common0_w ) { if (exists()) m_device->common0_w(state); }
DECLARE_WRITE_LINE_MEMBER( common1_w ) { if (exists()) m_device->common1_w(state); }
bool exists() { return m_device != nullptr; }
void irq_w(int state) { m_write_irq(state); }
protected:
// device-level overrides
virtual void device_start() override;
device_colecovision_control_port_interface *m_device;
private:
devcb_write_line m_write_irq;
};
// device type definition
DECLARE_DEVICE_TYPE(COLECOVISION_CONTROL_PORT, colecovision_control_port_device)
SLOT_INTERFACE_EXTERN( colecovision_control_port_devices );
#endif // MAME_BUS_COLECO_CTRL_H
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