// license:BSD-3-Clause
// copyright-holders:Peter Trauner, Kevin Thacker
/**********************************************************************
pckeybrd.h
PC-style keyboard emulation
This emulation is decoupled from the AT 8042 emulation used in the
IBM ATs and above
**********************************************************************/
#ifndef PCKEYBRD_H
#define PCKEYBRD_H
#include "emu.h"
class pc_keyboard_device : public device_t
{
public:
pc_keyboard_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
pc_keyboard_device(const machine_config &mconfig, device_type type, std::string name, std::string tag, device_t *owner, UINT32 clock, std::string shortname, std::string source);
DECLARE_READ8_MEMBER(read);
DECLARE_WRITE_LINE_MEMBER(enable);
template<class _Object> static devcb_base &static_set_keypress_callback(device_t &device, _Object object)
{ return downcast<pc_keyboard_device &>(device).m_out_keypress_func.set_callback(object); }
enum KEYBOARD_TYPE
{
KEYBOARD_TYPE_PC,
KEYBOARD_TYPE_AT,
KEYBOARD_TYPE_MF2
};
protected:
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
void queue_insert(UINT8 data);
void clear_buffer(void);
int m_numlock;
KEYBOARD_TYPE m_type;
private:
void polling(void);
UINT32 readport(int port);
UINT8 unicode_char_to_at_keycode(unicode_char ch);
virtual void standard_scancode_insert(int our_code, int pressed);
virtual void extended_scancode_insert(int code, int pressed) { }
int queue_size(void);
int queue_chars(const unicode_char *text, size_t text_len);
bool accept_char(unicode_char ch);
bool charqueue_empty();
bool m_on;
UINT8 m_delay; /* 240/60 -> 0,25s */
UINT8 m_repeat; /* 240/ 8 -> 30/s */
UINT8 m_queue[256];
UINT8 m_head;
UINT8 m_tail;
UINT8 m_make[128];
optional_ioport m_ioport_0;
optional_ioport m_ioport_1;
optional_ioport m_ioport_2;
optional_ioport m_ioport_3;
optional_ioport m_ioport_4;
optional_ioport m_ioport_5;
optional_ioport m_ioport_6;
optional_ioport m_ioport_7;
devcb_write_line m_out_keypress_func;
emu_timer *m_keyboard_timer;
};
class at_keyboard_device : public pc_keyboard_device
{
public:
at_keyboard_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
DECLARE_WRITE8_MEMBER( write );
static void static_set_type(device_t &device, KEYBOARD_TYPE type, int default_set)
{ downcast<at_keyboard_device &>(device).m_scan_code_set = default_set; downcast<at_keyboard_device &>(device).m_type = type; }
protected:
virtual void device_reset() override;
virtual void device_start() override;
private:
virtual void standard_scancode_insert(int our_code, int pressed) override;
virtual void extended_scancode_insert(int code, int pressed) override;
void helper(const char *codes);
void clear_buffer_and_acknowledge(void);
struct extended_keyboard_code
{
const char *pressed;
const char *released;
};
static const extended_keyboard_code m_extended_codes_set_2_3[];
static const int m_scancode_set_2_3[];
static const extended_keyboard_code m_mf2_code[0x10][2];
int m_scan_code_set;
int m_input_state;
};
INPUT_PORTS_EXTERN( pc_keyboard );
INPUT_PORTS_EXTERN( at_keyboard );
extern const device_type PC_KEYB;
extern const device_type AT_KEYB;
#define MCFG_PC_KEYB_ADD(_tag, _cb) \
MCFG_DEVICE_ADD(_tag, PC_KEYB, 0) \
devcb = &pc_keyboard_device::static_set_keypress_callback(*device, DEVCB_##_cb);
#define MCFG_AT_KEYB_ADD(_tag, _def_set, _cb) \
MCFG_DEVICE_ADD(_tag, AT_KEYB, 0) \
at_keyboard_device::static_set_type(*device, pc_keyboard_device::KEYBOARD_TYPE_AT, _def_set); \
devcb = &pc_keyboard_device::static_set_keypress_callback(*device, DEVCB_##_cb);
#define MCFG_AT_MF2_KEYB_ADD(_tag, _def_set, _cb) \
MCFG_DEVICE_ADD(_tag, AT_KEYB, 0) \
at_keyboard_device::static_set_type(*device, pc_keyboard_device::KEYBOARD_TYPE_MF2, _def_set); \
devcb = &pc_keyboard_device::static_set_keypress_callback(*device, DEVCB_##_cb);
#endif /* PCKEYBRD_H */