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// license:LGPL-2.1+
// copyright-holders:Michael Zapf
/****************************************************************************
TI-99/4 handset
See handset.c for documentation.
This file also contains the implementation of the twin joystick;
actually, no big deal, as it contains no logic but only switches.
Michael Zapf, October 2010
February 2012: Rewritten as class
June 2012: Added joystick
*****************************************************************************/
#ifndef MAME_BUS_TI99_JOYPORT_HANDSET_H
#define MAME_BUS_TI99_JOYPORT_HANDSET_H
#pragma once
#include "joyport.h"
namespace bus::ti99::joyport {
class ti99_handset_device : public device_t, public device_ti99_joyport_interface
{
public:
ti99_handset_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
uint8_t read_dev() override;
void write_dev(uint8_t data) override;
void pulse_clock() override;
protected:
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
virtual ioport_constructor device_input_ports() const override ATTR_COLD;
TIMER_CALLBACK_MEMBER(delayed_data_ack);
private:
static constexpr unsigned MAX_HANDSETS = 4;
void do_task();
void post_message(int message);
bool poll_keyboard(int num);
bool poll_joystick(int num);
void set_acknowledge(int data);
required_ioport_array<4> m_joyx;
required_ioport_array<4> m_joyy;
required_ioport_array<5> m_keys;
int m_ack;
bool m_clock_high;
int m_buf;
int m_buflen;
uint8_t previous_joy[MAX_HANDSETS];
uint8_t previous_key[MAX_HANDSETS];
emu_timer *m_delay_timer;
};
/****************************************************************************/
class ti99_twin_joystick_device : public device_t, public device_ti99_joyport_interface
{
public:
ti99_twin_joystick_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual void device_start() override ATTR_COLD;
uint8_t read_dev() override;
void write_dev(uint8_t data) override;
protected:
virtual ioport_constructor device_input_ports() const override ATTR_COLD;
private:
// Which joystick is selected?
// In reality this is no latch but GND is put on one of the selector lines
// and then routed back to the port via the joystick
int m_joystick;
required_ioport_array<2> m_joys;
};
} // end namespace bus::ti99::joyport
DECLARE_DEVICE_TYPE_NS(TI99_HANDSET, bus::ti99::joyport, ti99_handset_device)
DECLARE_DEVICE_TYPE_NS(TI99_JOYSTICK, bus::ti99::joyport, ti99_twin_joystick_device)
#endif // MAME_BUS_TI99_JOYPORT_HANDSET_H
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