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// license:BSD-3-Clause
// copyright-holders:David Haywood
#ifndef MAME_MACHINE_BL_HANDHELDS_MENUCONTROL_H
#define MAME_MACHINE_BL_HANDHELDS_MENUCONTROL_H
#pragma once
DECLARE_DEVICE_TYPE(BL_HANDHELDS_MENUCONTROL, bl_handhelds_menucontrol_device)
class bl_handhelds_menucontrol_device : public device_t
{
public:
// construction/destruction
bl_handhelds_menucontrol_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// the chip is the same between systems, but there's some logic not fully understood that is causing off-by-1 errors on some calcs
void set_is_unsp_type_hack() { m_is_unsp_type_hack = true; }
int status_r();
int data_r();
void clock_w(int state);
void data_w(int state);
void reset_w(int state);
protected:
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
private:
// config
bool m_is_unsp_type_hack;
// internal state
uint16_t m_menupos;
// command handling
uint8_t m_clockstate;
uint8_t m_datashifterpos;
uint8_t m_responsebit;
uint8_t m_response;
uint8_t m_commandbit;
uint8_t m_command;
void handle_command();
enum menustate : uint8_t
{
MENU_READY_FOR_COMMAND = 0,
MENU_COMMAND_00_IN,
MENU_COMMAND_01_IN,
MENU_COMMAND_02_IN,
MENU_COMMAND_03_IN,
MENU_COMMAND_04_IN,
MENU_COMMAND_05_IN,
};
uint8_t m_menustate;
};
#endif // MAME_MACHINE_BL_HANDHELDS_MENUCONTROL_H
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