summaryrefslogblamecommitdiffstatshomepage
path: root/src/mame/machine/dmv_keyb.h
blob: a572133448d61858b8f6a4a4d9096da2f3787314 (plain) (tree)
1
2
3
4
5
6
7
8
9
10







                                                                       

                               
 
            

 




















                                                                            
                                                                                                             
 


                                             

                                 

                                             
 




                                                                         



                                                    
                        

                                



                                         



                         
                                                      

 
                                 
// license:BSD-3-Clause
// copyright-holders:Sandro Ronco
/**********************************************************************

    Decision Mate V keyboard emulation

*********************************************************************/

#ifndef MAME_MACHINE_DMV_KEYB_H
#define MAME_MACHINE_DMV_KEYB_H

#pragma once


#include "cpu/mcs48/mcs48.h"


//**************************************************************************
//  INTERFACE CONFIGURATION MACROS
//**************************************************************************

#define MCFG_DMV_KEYBOARD_ADD(_tag) \
	MCFG_DEVICE_ADD(_tag, DMV_KEYBOARD, 0)


//**************************************************************************
//  TYPE DEFINITIONS
//**************************************************************************

// ======================> dmv_keyboard_device

class dmv_keyboard_device : public device_t
{
public:
	// construction/destruction
	dmv_keyboard_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

	DECLARE_WRITE_LINE_MEMBER(sd_poll_w);
	DECLARE_READ_LINE_MEMBER(sd_poll_r);

protected:
	// device-level overrides
	virtual void device_start() override;
	virtual void device_reset() override;

	// optional information overrides
	virtual const tiny_rom_entry *device_rom_region() const override;
	virtual void device_add_mconfig(machine_config &config) override;
	virtual ioport_constructor device_input_ports() const override;

private:
	required_device<upi41_cpu_device> m_maincpu;
	required_ioport_array<16> m_keyboard;

	uint8_t   m_col;
	int     m_sd_data_state;
	int     m_sd_poll_state;

	DECLARE_READ8_MEMBER( port1_r );
	DECLARE_READ8_MEMBER( port2_r );
	DECLARE_WRITE8_MEMBER( port2_w );
};


// device type definition
DECLARE_DEVICE_TYPE(DMV_KEYBOARD, dmv_keyboard_device)


#endif // MAME_MACHINE_DMV_KEYB_H