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// license:MAME|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 __HANDSET__
#define __HANDSET__
#include "emu.h"
#include "joyport.h"
#define MAX_HANDSETS 4
extern const device_type HANDSET;
class ti99_handset_device : public joyport_attached_device
{
public:
ti99_handset_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
UINT8 read_dev();
void write_dev(UINT8 data);
void pulse_clock();
protected:
virtual void device_start(void);
virtual void device_reset(void);
virtual ioport_constructor device_input_ports() const;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
private:
void do_task();
void post_message(int message);
bool poll_keyboard(int num);
bool poll_joystick(int num);
void set_acknowledge(int data);
int m_ack;
bool m_clock_high;
int m_buf;
int m_buflen;
UINT8 previous_joy[MAX_HANDSETS];
UINT8 previous_key[MAX_HANDSETS];
emu_timer *m_delay_timer;
};
#define MCFG_HANDSET_ADD(_tag, _intf, _clock ) \
MCFG_DEVICE_ADD(_tag, HANDSET, _clock) \
MCFG_DEVICE_CONFIG(_intf)
#define TI99_HANDSET_INTERFACE(name) \
const ti99_handset_intf(name) =
/****************************************************************************/
extern const device_type TI99_JOYSTICK;
class ti99_twin_joystick : public joyport_attached_device
{
public:
ti99_twin_joystick(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
DECLARE_READ8_MEMBER( read );
virtual void device_start(void);
UINT8 read_dev();
void write_dev(UINT8 data);
protected:
virtual ioport_constructor device_input_ports() const;
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;
};
#endif
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