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// license:BSD-3-Clause
// copyright-holders:AJR
/*********************************************************************
Apple II Game I/O Connector
*********************************************************************/
#ifndef MAME_BUS_A2GAMEIO_GAMEIO_H
#define MAME_BUS_A2GAMEIO_GAMEIO_H
#pragma once
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// forward declaration
class device_a2gameio_interface;
// ======================> apple2_gameio_device
class apple2_gameio_device : public device_t, public device_single_card_slot_interface<device_a2gameio_interface>
{
public:
// construction/destruction
apple2_gameio_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock = XTAL());
template <typename T>
apple2_gameio_device(const machine_config &mconfig, const char *tag, device_t *owner, T &&opts, const char *dflt)
: apple2_gameio_device(mconfig, tag, owner)
{
option_reset();
opts(*this);
set_default_option(dflt);
set_fixed(false);
}
// configuration
void set_sw_pullups(bool enabled) { m_sw_pullups = enabled; }
bool has_sw_pullups() const { return m_sw_pullups; }
// standard options
static void default_options(device_slot_interface &slot);
static void iiandplus_options(device_slot_interface &slot);
// analog paddles
u8 pdl0_r();
u8 pdl1_r();
u8 pdl2_r();
u8 pdl3_r();
// digital switches
DECLARE_READ_LINE_MEMBER(sw0_r);
DECLARE_READ_LINE_MEMBER(sw1_r);
DECLARE_READ_LINE_MEMBER(sw2_r);
DECLARE_READ_LINE_MEMBER(sw3_r);
// annunciator outputs
DECLARE_WRITE_LINE_MEMBER(an0_w);
DECLARE_WRITE_LINE_MEMBER(an1_w);
DECLARE_WRITE_LINE_MEMBER(an2_w);
DECLARE_WRITE_LINE_MEMBER(an3_w);
DECLARE_WRITE_LINE_MEMBER(an4_w);
// utility strobe (active low)
DECLARE_WRITE_LINE_MEMBER(strobe_w);
// check if a device is connected
bool is_device_connected() { return (m_intf != nullptr); }
protected:
// device-level overrides
virtual void device_config_complete() override;
virtual void device_resolve_objects() override;
virtual void device_start() override;
private:
// selected device
device_a2gameio_interface *m_intf;
bool m_sw_pullups;
};
// ======================> device_a2gameio_interface
class device_a2gameio_interface : public device_interface
{
friend class apple2_gameio_device;
public:
virtual ~device_a2gameio_interface();
protected:
// construction/destruction
device_a2gameio_interface(const machine_config &mconfig, device_t &device);
// optional input overrides
virtual u8 pdl0_r() { return 0; }
virtual u8 pdl1_r() { return 0; }
virtual u8 pdl2_r() { return 0; }
virtual u8 pdl3_r() { return 0; }
virtual DECLARE_READ_LINE_MEMBER(sw0_r) { return m_connector->has_sw_pullups() ? 1 : 0; }
virtual DECLARE_READ_LINE_MEMBER(sw1_r) { return m_connector->has_sw_pullups() ? 1 : 0; }
virtual DECLARE_READ_LINE_MEMBER(sw2_r) { return m_connector->has_sw_pullups() ? 1 : 0; }
virtual DECLARE_READ_LINE_MEMBER(sw3_r) { return m_connector->has_sw_pullups() ? 1 : 0; }
// optional output overrides
virtual DECLARE_WRITE_LINE_MEMBER(an0_w) { }
virtual DECLARE_WRITE_LINE_MEMBER(an1_w) { }
virtual DECLARE_WRITE_LINE_MEMBER(an2_w) { }
virtual DECLARE_WRITE_LINE_MEMBER(an3_w) { }
virtual DECLARE_WRITE_LINE_MEMBER(an4_w) { }
virtual DECLARE_WRITE_LINE_MEMBER(strobe_w) { }
private:
apple2_gameio_device *m_connector;
};
// device type declaration
DECLARE_DEVICE_TYPE(APPLE2_GAMEIO, apple2_gameio_device)
#endif // MAME_BUS_A2GAMEIO_GAMEIO_H
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