summaryrefslogblamecommitdiffstats
path: root/src/mame/drivers/pce220.cpp
blob: 66c300cd981153ea5dd1ef277c9162481ae2d543 (plain) (tree)
1
2
                       
                                                




















                                                                                      


                                                                                   

                                                                             

                        

                               
                        
                          
                       
                    


                    

                  


                                



                                         
                                                                                      
                                                    

                                                    
                                                
                                                         



                                              
                                            


                                                       



                                 

                       





                               
 

                         
 

                                              
                                                                                                       



















                                               
                                     

                                             
                                                            
                                            

                                          




                                         
                                                                                       


                                                  



                                 
 

                                              
                                                                                                       





                                                     

                                             
                                          

  
                                                                                                            
 
                               





































                                                                                                                                

















                                                                     
 
                 

 
                                                                                                             
 
                               






                                      
                                               

                              
                                                   

                                            
                                                


                                   
                                                 

                                                          
                                                   



































                                                                                                                                         
















                                                                     
 
                 




                                          



                                     
                         







                                            
                                                        
                                       
                                                  
                                              
                                                     
                                              
                                                                





















                                                                            

                                                         








                                           
                                   



















                                                                    

                                                                        






                                               


                                   












                                                 



                          





                                       
                                        










                                         




                                                 
 
                         
























                                                                      
                            



























                                                



                          



















                                            
                                                                


                        
                                                                     



                                                  
                                                     







                                                 


                                     
                         







                                                   
                                                             


                                                                           
                                                             


                                                                                
                                                         


                                        
                                                                 


                                               
                                                             


                                      
                                                              


                                            
                                                      


                                              
                                                               













                                                                           
                                                                                     














                                                                         























































                                                                                                                    
 
                                          
 
                                      
         
                                                                                 
 
                                                                   


         
                                          
 
                                     
         
                                                                                 
 
                                                                        










                                                     







                                                                                                                                                                                                                  
                           







                                                                                                                                                                                                                  
                           







                                                                                                                                                                                                                 
                           







                                                                                                                                                                                                                 
                           







                                                                                                                                                                                                                  
                           







                                                                                                                                                                                                                 
                           







                                                                                                                                                                                                                   
                           







                                                                                                                                                                                                                      
                           







                                                                                                                                                                                                 
                           







                                                                                                                                                                                 
                           
                                                                                                                                                                                                           
                        
                                                                                                                                                                                 








                                                     







                                                                                                                                                                                                                  
                           







                                                                                                                                                                                                                 
                           







                                                                                                                                                                                                                 
                           







                                                                                                                                                                                                                 
                           







                                                                                                                                                                                                                  
                           







                                                                                                                                                                                                                 
                           







                                                                                                                                                                                                                   
                           







                                                                                                                                                                                                                      
                           







                                                                                                                                                                                                 
                           







                                                                                                                                                                                 
                           
                                                                                                                                                                                                           
                        
                                                                                                                                                                                 



                                  

                                                  





                                                                        
                                                         





                                                                              

                                                  





                                                                        
                                                         




                                                                              
                                                            
                                          

                                                    
                                                                        





















                                      
                                                                 
 
                                         
 
                                        
         
                                                         
 
                                                                       


         
                                        
 

                                                       


 
                                          
                                    


                                                               
 
                            
                                                        





                                                                             
                                      
 

                                                    


                                       
                                               
                                             

                                                   
                                                                                                                     









                                                                        
                                           
                                    


                                                                   















                                                                             
                                               
                                             












                                                                                                                     
                                            
                                    


                                                                       
 
                            
                                                        





                                                                             
                                      
 

                                                    


                                       
                                               
                                             

                                                   
                                                                                                                     



























                                                                                                                              
                                                                                              

       


















                                                                                                                    






























                                                                                                             



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

    Sharp PC-E220

    preliminary driver by Angelo Salese
    improvements by Sandro Ronco

    Notes:
    - NVRAM works only if the machine is turned off (with OFF key) before closing MESS

    TODO:
    - ON key doesn't work.
    - Fix the PC-G850V keyboard, that sometimes is too slow.
    - LCD contrast.
    - Add an artwork for the LCD symbols.
    - Add other models that have a similar hardware.

    More info:
      http://wwwhomes.uni-bielefeld.de/achim/pc-e220.html
      http://www.akiyan.com/pc-g850_technical_data (in Japanese)

    PC-G815 added 2016-05-14, not working at all. Needs new IO map.
    Looks like base.rom runs first, then rom00 is at 0x8000 and rom01 is at 0xc000.

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

#include "emu.h"
#include "cpu/z80/z80.h"
#include "machine/nvram.h"
#include "machine/pce220_ser.h"
#include "machine/ram.h"
#include "machine/timer.h"
#include "sound/beep.h"
#include "rendlay.h"
#include "screen.h"
#include "speaker.h"


// Interrupt flags
#define IRQ_FLAG_KEY        0x01
#define IRQ_FLAG_ON         0x02
#define IRQ_FLAG_TIMER      0x04

class pce220_state : public driver_device
{
public:
	pce220_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag),
			m_maincpu(*this, "maincpu"),
			m_ram(*this, RAM_TAG),
			m_beep(*this, "beeper"),
			m_serial(*this, PCE220SERIAL_TAG)
		{ }

	required_device<cpu_device> m_maincpu;
	required_device<ram_device> m_ram;
	required_device<beep_device> m_beep;
	required_device<pce220_serial_device> m_serial;

	// HD61202 LCD controller
	uint8_t m_lcd_index_row;
	uint8_t m_lcd_index_col;
	uint8_t m_lcd_start_line;
	uint8_t m_lcd_on;

	//basic machine
	uint8_t m_bank_num;
	uint8_t m_irq_mask;
	uint8_t m_irq_flag;
	uint8_t m_timer_status;
	uint16_t m_kb_matrix;
	uint8_t *m_vram;

	uint8_t m_port15;
	uint8_t m_port18;

	virtual void machine_start() override;
	virtual void machine_reset() override;
	uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
	DECLARE_READ8_MEMBER( lcd_status_r );
	DECLARE_WRITE8_MEMBER( lcd_control_w );
	DECLARE_READ8_MEMBER( lcd_data_r );
	DECLARE_WRITE8_MEMBER( lcd_data_w );
	DECLARE_READ8_MEMBER( rom_bank_r );
	DECLARE_WRITE8_MEMBER( rom_bank_w );
	DECLARE_WRITE8_MEMBER( ram_bank_w );
	DECLARE_READ8_MEMBER( timer_r );
	DECLARE_WRITE8_MEMBER( timer_w );
	DECLARE_WRITE8_MEMBER( boot_bank_w );
	DECLARE_READ8_MEMBER( port15_r );
	DECLARE_WRITE8_MEMBER( port15_w );
	DECLARE_READ8_MEMBER( port18_r );
	DECLARE_WRITE8_MEMBER( port18_w );
	DECLARE_READ8_MEMBER( port1f_r );
	DECLARE_WRITE8_MEMBER( kb_matrix_w );
	DECLARE_READ8_MEMBER( kb_r );
	DECLARE_READ8_MEMBER( irq_status_r );
	DECLARE_WRITE8_MEMBER( irq_ack_w );
	DECLARE_WRITE8_MEMBER( irq_mask_w );
	DECLARE_PALETTE_INIT(pce220);
	DECLARE_INPUT_CHANGED_MEMBER(kb_irq);
	DECLARE_INPUT_CHANGED_MEMBER(on_irq);
	TIMER_DEVICE_CALLBACK_MEMBER(pce220_timer_callback);
	void pce220(machine_config &config);
	void pce220_io(address_map &map);
	void pce220_mem(address_map &map);
};

class pcg850v_state : public pce220_state
{
public:
	pcg850v_state(const machine_config &mconfig, device_type type, const char *tag)
		: pce220_state(mconfig, type, tag)
		{ }

	uint8_t m_g850v_bank_num;
	uint8_t m_lcd_effects;
	uint8_t m_lcd_contrast;
	uint8_t m_lcd_read_mode;

	virtual void machine_start() override;
	virtual void machine_reset() override;
	uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
	DECLARE_READ8_MEMBER( g850v_bank_r );
	DECLARE_WRITE8_MEMBER( g850v_bank_w );
	DECLARE_READ8_MEMBER( g850v_lcd_status_r );
	DECLARE_WRITE8_MEMBER( g850v_lcd_control_w );
	DECLARE_READ8_MEMBER( g850v_lcd_data_r );
	DECLARE_WRITE8_MEMBER( g850v_lcd_data_w );
	void pcg850v(machine_config &config);
	void pcg815(machine_config &config);
	void pcg850v_io(address_map &map);
};

uint32_t pce220_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
	uint8_t lcd_symbols[4];

	if (m_lcd_on)
	{
		for (int y = 0; y < 4; y++)
		{
			int row_pos = 0;

			for (int x = 0; x < 12; x++)
			{
				for (int xi = 0; xi < 5; xi++)
				{
					for (int yi = 0; yi < 8; yi++)
					{
						//first 12 columns
						int panel1_addr = ((m_lcd_start_line>>3) + y)*0x40 + row_pos;
						bitmap.pix16(y*8 + yi, x*6 + xi) = (m_vram[panel1_addr & 0x1ff] >> yi) & 1;

						//last 12 columns
						int panel2_addr = ((m_lcd_start_line>>3) + y + 4)*0x40 + (59-row_pos);
						bitmap.pix16(y*8 + yi, (x+12)*6 + xi) = (m_vram[panel2_addr & 0x1ff] >> yi) & 1;
					}

					row_pos++;
				}
			}
		}

		lcd_symbols[0] = m_vram[((m_lcd_start_line>>3)*0x40 + 0x03c) & 0x1ff];
		lcd_symbols[1] = m_vram[((m_lcd_start_line>>3)*0x40 + 0x0fc) & 0x1ff];
		lcd_symbols[2] = m_vram[((m_lcd_start_line>>3)*0x40 + 0x13c) & 0x1ff];
		lcd_symbols[3] = m_vram[((m_lcd_start_line>>3)*0x40 + 0x1fc) & 0x1ff];
	}
	else
	{
		bitmap.fill(0, cliprect);
		memset(lcd_symbols, 0, sizeof(lcd_symbols));
	}

	output().set_value("BUSY" , (lcd_symbols[0] & 0x01) ? 1 : 0);
	output().set_value("CAPS" , (lcd_symbols[0] & 0x02) ? 1 : 0);
	output().set_value("KANA" , (lcd_symbols[0] & 0x04) ? 1 : 0);
	output().set_value("SYO"  , (lcd_symbols[0] & 0x08) ? 1 : 0);
	output().set_value("2ndF" , (lcd_symbols[0] & 0x10) ? 1 : 0);
	output().set_value("TEXT" , (lcd_symbols[1] & 0x08) ? 1 : 0);
	output().set_value("CASL" , (lcd_symbols[1] & 0x10) ? 1 : 0);
	output().set_value("PRO"  , (lcd_symbols[1] & 0x20) ? 1 : 0);
	output().set_value("RUN"  , (lcd_symbols[1] & 0x40) ? 1 : 0);
	output().set_value("BATT" , (lcd_symbols[2] & 0x01) ? 1 : 0);
	output().set_value("E"    , (lcd_symbols[2] & 0x02) ? 1 : 0);
	output().set_value("M"    , (lcd_symbols[2] & 0x04) ? 1 : 0);
	output().set_value("CONST", (lcd_symbols[2] & 0x08) ? 1 : 0);
	output().set_value("RAD"  , (lcd_symbols[2] & 0x10) ? 1 : 0);
	output().set_value("G"    , (lcd_symbols[2] & 0x20) ? 1 : 0);
	output().set_value("DE"   , (lcd_symbols[2] & 0x40) ? 1 : 0);
	output().set_value("STAT" , (lcd_symbols[3] & 0x20) ? 1 : 0);
	output().set_value("PRINT", (lcd_symbols[3] & 0x40) ? 1 : 0);

	return 0;
}

uint32_t pcg850v_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
	uint8_t lcd_symbols[6];
	int color0 = 0;
	int color1 = 1;

	if (m_lcd_on)
	{
		switch (m_lcd_effects)
		{
		case 0x01:      //mirror effect
			//TODO
			break;
		case 0x05:      //black mask effect
			color0 = color1 = 1;
			break;
		case 0x07:      //reverse effect
			color0 = 1;
			color1 = 0;
			break;
		case 0x08:      //contrast effect
			//TODO: use the max contrast value
			break;
		case 0x0e:      //white mask effect
			color0 = color1 = 0;
			break;
		}

		for (int y = 0; y < 6; y++)
		{
			int row_pos = 0;

			for (int x = 0; x < 24; x++)
			{
				for (int xi = 0; xi < 6; xi++)
				{
					for (int yi = 0; yi < 8; yi++)
					{
						int addr = ((m_lcd_start_line>>3) + y)*0x100 + row_pos;
						bitmap.pix16(y*8 + yi, x*6 + xi) = ((m_vram[addr & 0x7ff] >> yi) & 1 ) ? color1 : color0;
					}

					row_pos++;
				}
			}
		}

		lcd_symbols[0] = m_vram[((m_lcd_start_line>>3)*0x100 + 0x090) & 0x7ff];
		lcd_symbols[1] = m_vram[((m_lcd_start_line>>3)*0x100 + 0x190) & 0x7ff];
		lcd_symbols[2] = m_vram[((m_lcd_start_line>>3)*0x100 + 0x290) & 0x7ff];
		lcd_symbols[3] = m_vram[((m_lcd_start_line>>3)*0x100 + 0x390) & 0x7ff];
		lcd_symbols[4] = m_vram[((m_lcd_start_line>>3)*0x100 + 0x490) & 0x7ff];
		lcd_symbols[5] = m_vram[((m_lcd_start_line>>3)*0x100 + 0x590) & 0x7ff];
	}
	else
	{
		bitmap.fill(0, cliprect);
		memset(lcd_symbols, 0, sizeof(lcd_symbols));
	}

	output().set_value("RUN"  , (lcd_symbols[0] & 0x02) ? 1 : 0);
	output().set_value("PRO"  , (lcd_symbols[0] & 0x08) ? 1 : 0);
	output().set_value("TEXT" , (lcd_symbols[0] & 0x40) ? 1 : 0);
	output().set_value("CASL" , (lcd_symbols[1] & 0x08) ? 1 : 0);
	output().set_value("STAT" , (lcd_symbols[2] & 0x01) ? 1 : 0);
	output().set_value("2ndF" , (lcd_symbols[2] & 0x20) ? 1 : 0);
	output().set_value("M"    , (lcd_symbols[2] & 0x80) ? 1 : 0);
	output().set_value("CAPS" , (lcd_symbols[3] & 0x04) ? 1 : 0);
	output().set_value("KANA" , (lcd_symbols[3] & 0x80) ? 1 : 0);
	output().set_value("SYO"  , (lcd_symbols[4] & 0x02) ? 1 : 0);
	output().set_value("DE"   , (lcd_symbols[4] & 0x10) ? 1 : 0);
	output().set_value("G"    , (lcd_symbols[4] & 0x40) ? 1 : 0);
	output().set_value("RAD"  , (lcd_symbols[5] & 0x01) ? 1 : 0);
	output().set_value("CONST", (lcd_symbols[5] & 0x04) ? 1 : 0);
	output().set_value("PRINT", (lcd_symbols[5] & 0x10) ? 1 : 0);
	output().set_value("BUSY" , (lcd_symbols[5] & 0x40) ? 1 : 0);
	output().set_value("BATT" , (lcd_symbols[5] & 0x80) ? 1 : 0);

	return 0;
}

READ8_MEMBER( pce220_state::lcd_status_r )
{
	/*
	x--- ---- Busy (not emulated)
	--x- ---- LCD on/off
	---x ---- Reset
	*/
	uint8_t data = 0;

	data &= (m_lcd_on<<5);

	return data;
}

WRITE8_MEMBER( pce220_state::lcd_control_w )
{
	if((data & 0xfe) == 0x3e)       //Display on/off
		m_lcd_on = data & 0x01;
	if((data & 0xb8) == 0xb8)       //Set page
		m_lcd_index_row = data & 0x07;
	if((data & 0xc0) == 0x40)       //Set address
		m_lcd_index_col = data & 0x3f;
	if((data & 0xc0) == 0xc0)       //Set display start line
		m_lcd_start_line = data & 0x3f;
}

READ8_MEMBER( pce220_state::lcd_data_r )
{
	return m_vram[(m_lcd_index_row*0x40 + m_lcd_index_col - 1) & 0x1ff];
}

WRITE8_MEMBER( pce220_state::lcd_data_w )
{
	m_vram[(m_lcd_index_row*0x40 + m_lcd_index_col) & 0x1ff] = data;

	m_lcd_index_col++;
}

READ8_MEMBER( pce220_state::rom_bank_r )
{
	return m_bank_num;
}

WRITE8_MEMBER( pce220_state::rom_bank_w )
{
	uint8_t bank4 = data & 0x07; // bits 0,1,2
	uint8_t bank3 = (data & 0x70) >> 4; // bits 4,5,6

	m_bank_num = data;

	membank("bank3")->set_entry(bank3);
	membank("bank4")->set_entry(bank4);
}

WRITE8_MEMBER( pce220_state::ram_bank_w )
{
	uint8_t bank = BIT(data,2);

	membank("bank1")->set_entry(bank);
	membank("bank2")->set_entry(bank);
}

READ8_MEMBER( pce220_state::timer_r )
{
	return m_timer_status;
}

WRITE8_MEMBER( pce220_state::timer_w )
{
	m_timer_status = data & 1;
}

WRITE8_MEMBER( pce220_state::boot_bank_w )
{
	// set to 1 after boot for restore the ram in the first bank
	if (data & 0x01)
	{
		address_space &space_prg = m_maincpu->space(AS_PROGRAM);
		space_prg.install_write_bank(0x0000, 0x3fff, "bank1");
		membank("bank1")->set_entry(0);
	}
}

READ8_MEMBER( pce220_state::port15_r )
{
	/*
	x--- ---- XIN input enabled
	---- ---0
	*/
	return m_port15;
}

WRITE8_MEMBER( pce220_state::port15_w )
{
	m_serial->enable_interface(BIT(data, 7));

	m_port15 = data;
}

READ8_MEMBER( pce220_state::port18_r )
{
	/*
	x--- ---- XOUT/TXD
	---- --x- DOUT
	---- ---x BUSY/CTS
	*/

	return m_port18;
}

WRITE8_MEMBER( pce220_state::port18_w )
{
	m_beep->set_state(BIT(data, 7));

	m_serial->out_busy(BIT(data, 0));
	m_serial->out_dout(BIT(data, 1));
	m_serial->out_xout(BIT(data, 7));

	m_port18 = data;
}

READ8_MEMBER( pce220_state::port1f_r )
{
	/*
	x--- ---- ON - resp. break key status (?)
	---- -x-- XIN/RXD
	---- --x- ACK/RTS
	---- ---x DIN
	*/

	uint8_t data = 0;

	data |= m_serial->in_din()<<0;
	data |= m_serial->in_ack()<<1;
	data |= m_serial->in_xin()<<2;

	data |= ioport("ON")->read()<<7;

	return data;
}

WRITE8_MEMBER( pce220_state::kb_matrix_w )
{
	switch(offset)
	{
	case 0:
		m_kb_matrix = (m_kb_matrix & 0x300) | data;
		break;
	case 1:
		m_kb_matrix = (m_kb_matrix & 0xff) | ((data&0x03)<<8);
		break;
	}
}

READ8_MEMBER( pce220_state::kb_r )
{
	uint8_t data = 0x00;

	if (m_kb_matrix & 0x01)
		data |= ioport("LINE0")->read();
	if (m_kb_matrix & 0x02)
		data |= ioport("LINE1")->read();
	if (m_kb_matrix & 0x04)
		data |= ioport("LINE2")->read();
	if (m_kb_matrix & 0x08)
		data |= ioport("LINE3")->read();
	if (m_kb_matrix & 0x10)
		data |= ioport("LINE4")->read();
	if (m_kb_matrix & 0x20)
		data |= ioport("LINE5")->read();
	if (m_kb_matrix & 0x40)
		data |= ioport("LINE6")->read();
	if (m_kb_matrix & 0x80)
		data |= ioport("LINE7")->read();
	if (m_kb_matrix & 0x100)
		data |= ioport("LINE8")->read();
	if (m_kb_matrix & 0x200)
		data |= ioport("LINE9")->read();

	return data;
}

READ8_MEMBER( pce220_state::irq_status_r )
{
	/*
	---- -x-- timer
	---- --x- ON-Key
	---- ---x keyboard
	*/
	return m_irq_flag;
}

WRITE8_MEMBER( pce220_state::irq_ack_w )
{
	m_irq_flag &= ~data;
}

WRITE8_MEMBER( pce220_state::irq_mask_w )
{
	m_irq_mask = data;
}

READ8_MEMBER( pcg850v_state::g850v_bank_r )
{
	return m_g850v_bank_num;
}

WRITE8_MEMBER( pcg850v_state::g850v_bank_w )
{
	address_space &space_prg = m_maincpu->space(AS_PROGRAM);

	if (data < 0x16)
	{
		space_prg.install_read_bank(0xc000, 0xffff, "bank4");
		membank("bank4")->set_entry(data);
	}
	else
	{
		space_prg.unmap_read(0xc000, 0xffff);
	}

	m_g850v_bank_num = data;
}

READ8_MEMBER( pcg850v_state::g850v_lcd_status_r )
{
	/*
	x--- ---- Busy (not emulated)
	--x- ---- LCD on/off
	*/
	uint8_t data = 0;

	data &= (m_lcd_on<<5);

	return data;
}

WRITE8_MEMBER( pcg850v_state::g850v_lcd_control_w )
{
	if ((data & 0xf0) == 0x00)          // LCD column LSB
	{
		m_lcd_index_col = (m_lcd_index_col & 0xf0) | (data & 0x0f);
	}
	else if ((data & 0xf0) == 0x10)     // LCD column MSB
	{
		m_lcd_index_col = (m_lcd_index_col & 0x0f) | ((data<<4) & 0xf0);
	}
	else if ((data & 0xf0) == 0x20)     // LCD on/off
	{
		m_lcd_on = BIT(data, 0);
	}
	else if ((data & 0xc0) == 0x40)     // display start line
	{
		m_lcd_start_line = data & 0x3f;
	}
	else if ((data & 0xe0) == 0x80)     // contrast level
	{
		m_lcd_contrast = data;
	}
	else if ((data & 0xf0) == 0xa0)     // display effects
	{
		m_lcd_effects = data & 0x0f;
	}
	else if ((data & 0xf0) == 0xb0)     // set row
	{
		m_lcd_index_row = data & 0x07;
	}
	else if ((data & 0xf0) == 0xe0)     // display controls
	{
		if (BIT(data, 1))
			m_lcd_contrast = 0;

		m_lcd_read_mode = BIT(data, 2);
	}
	else
	{
		logerror( "PC-G850V: Unknown LCD command 0x%02x\n", data );
	}
}

READ8_MEMBER( pcg850v_state::g850v_lcd_data_r )
{
	uint8_t data = m_vram[(m_lcd_index_row*0x100 + m_lcd_index_col - 1) & 0x7ff];

	if (m_lcd_read_mode == 1)
		m_lcd_index_col++;

	return data;
}

WRITE8_MEMBER( pcg850v_state::g850v_lcd_data_w )
{
	m_vram[(m_lcd_index_row*0x100 + m_lcd_index_col) & 0x7ff] = data;

	m_lcd_index_col++;
}


void pce220_state::pce220_mem(address_map &map)
{
	map(0x0000, 0x3fff).bankrw("bank1");
	map(0x4000, 0x7fff).bankrw("bank2");
	map(0x8000, 0xbfff).bankr("bank3");
	map(0xc000, 0xffff).bankr("bank4");
}

void pce220_state::pce220_io(address_map &map)
{
	map.unmap_value_high();
	map.global_mask(0xff);
	map(0x10, 0x10).r(this, FUNC(pce220_state::kb_r));
	map(0x11, 0x12).w(this, FUNC(pce220_state::kb_matrix_w));
	map(0x13, 0x13).portr("SHIFT");
	map(0x14, 0x14).rw(this, FUNC(pce220_state::timer_r), FUNC(pce220_state::timer_w));
	map(0x15, 0x15).rw(this, FUNC(pce220_state::port15_r), FUNC(pce220_state::port15_w));
	map(0x16, 0x16).rw(this, FUNC(pce220_state::irq_status_r), FUNC(pce220_state::irq_ack_w));
	map(0x17, 0x17).w(this, FUNC(pce220_state::irq_mask_w));
	map(0x18, 0x18).rw(this, FUNC(pce220_state::port18_r), FUNC(pce220_state::port18_w));
	map(0x19, 0x19).rw(this, FUNC(pce220_state::rom_bank_r), FUNC(pce220_state::rom_bank_w));
	map(0x1a, 0x1a).w(this, FUNC(pce220_state::boot_bank_w));
	map(0x1b, 0x1b).w(this, FUNC(pce220_state::ram_bank_w));
	map(0x1c, 0x1c).nopw(); //peripheral reset
	map(0x1d, 0x1d).portr("BATTERY");
	map(0x1e, 0x1e).nopw(); //???
	map(0x1f, 0x1f).r(this, FUNC(pce220_state::port1f_r));
	map(0x58, 0x58).w(this, FUNC(pce220_state::lcd_control_w));
	map(0x59, 0x59).r(this, FUNC(pce220_state::lcd_status_r));
	map(0x5a, 0x5a).w(this, FUNC(pce220_state::lcd_data_w));
	map(0x5b, 0x5b).r(this, FUNC(pce220_state::lcd_data_r));
}

void pcg850v_state::pcg850v_io(address_map &map)
{
	map.unmap_value_high();
	map.global_mask(0xff);
	map(0x10, 0x10).r(this, FUNC(pcg850v_state::kb_r));
	map(0x11, 0x12).w(this, FUNC(pcg850v_state::kb_matrix_w));
	map(0x13, 0x13).portr("SHIFT");
	map(0x14, 0x14).rw(this, FUNC(pcg850v_state::timer_r), FUNC(pcg850v_state::timer_w));
	map(0x15, 0x15).rw(this, FUNC(pcg850v_state::port15_r), FUNC(pcg850v_state::port15_w));
	map(0x16, 0x16).rw(this, FUNC(pcg850v_state::irq_status_r), FUNC(pcg850v_state::irq_ack_w));
	map(0x17, 0x17).w(this, FUNC(pcg850v_state::irq_mask_w));
	map(0x18, 0x18).rw(this, FUNC(pcg850v_state::port18_r), FUNC(pcg850v_state::port18_w));
	map(0x19, 0x19).rw(this, FUNC(pcg850v_state::rom_bank_r), FUNC(pcg850v_state::rom_bank_w));
	map(0x1a, 0x1a).w(this, FUNC(pcg850v_state::boot_bank_w));
	map(0x1b, 0x1b).w(this, FUNC(pcg850v_state::ram_bank_w));
	map(0x1c, 0x1c).nopw(); //peripheral reset
	map(0x1d, 0x1d).portr("BATTERY");
	map(0x1e, 0x1e).nopw(); //???
	map(0x1f, 0x1f).r(this, FUNC(pcg850v_state::port1f_r));
	map(0x40, 0x40).rw(this, FUNC(pcg850v_state::g850v_lcd_status_r), FUNC(pcg850v_state::g850v_lcd_control_w));
	map(0x41, 0x41).rw(this, FUNC(pcg850v_state::g850v_lcd_data_r), FUNC(pcg850v_state::g850v_lcd_data_w));
	map(0x69, 0x69).rw(this, FUNC(pcg850v_state::g850v_bank_r), FUNC(pcg850v_state::g850v_bank_w));
}

INPUT_CHANGED_MEMBER(pce220_state::kb_irq)
{
	if (m_irq_mask & IRQ_FLAG_KEY)
	{
		m_maincpu->set_input_line(0, newval ? ASSERT_LINE : CLEAR_LINE );

		m_irq_flag = (m_irq_flag & 0xfe) | (newval & 0x01);
	}
}

INPUT_CHANGED_MEMBER(pce220_state::on_irq)
{
	if (m_irq_mask & IRQ_FLAG_ON)
	{
		m_maincpu->set_input_line(0, newval ? ASSERT_LINE : CLEAR_LINE );

		m_irq_flag = (m_irq_flag & 0xfd) | ((newval & 0x01)<<1);
	}
}

/* Input ports */
static INPUT_PORTS_START( pce220 )
	PORT_START("BATTERY")
	PORT_CONFNAME( 0x01, 0x00, "Battery Status" )
	PORT_CONFSETTING( 0x00, DEF_STR( Normal ) )
	PORT_CONFSETTING( 0x01, "Low Battery" )

	PORT_START("LINE0")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F10)          PORT_NAME("OFF")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_Q)            PORT_NAME("Q")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('Q')  PORT_CHAR('!')
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_W)            PORT_NAME("W")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('W')  PORT_CHAR('"')
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_E)            PORT_NAME("E")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('E')  PORT_CHAR('#')
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_R)            PORT_NAME("R")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('R')  PORT_CHAR('$')
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_T)            PORT_NAME("T")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('T')  PORT_CHAR('%')
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_Y)            PORT_NAME("Y")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('Y')  PORT_CHAR('&')
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_U)            PORT_NAME("U")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('U')  PORT_CHAR('\'')
	PORT_START("LINE1")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_A)            PORT_NAME("A")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('A')  PORT_CHAR('[')
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_S)            PORT_NAME("S")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('S')  PORT_CHAR(']')
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_D)            PORT_NAME("D")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('D')  PORT_CHAR('{')
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F)            PORT_NAME("F")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('F')  PORT_CHAR('}')
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_G)            PORT_NAME("G")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('G')  PORT_CHAR('\\')
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_H)            PORT_NAME("H")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('H')  PORT_CHAR('|')
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_J)            PORT_NAME("J")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('J')  PORT_CHAR('`')
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_K)            PORT_NAME("K")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('K')  PORT_CHAR('_')
	PORT_START("LINE2")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_Z)            PORT_NAME("Z")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('Z')
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_X)            PORT_NAME("X")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('X')
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_C)            PORT_NAME("C")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('C')
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_V)            PORT_NAME("V")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('V')
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_B)            PORT_NAME("B")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('B')
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_N)            PORT_NAME("N")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('N')
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_M)            PORT_NAME("M")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('M')
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_COMMA)        PORT_NAME(",")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(',')  PORT_CHAR('?')
	PORT_START("LINE3")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F1)           PORT_NAME("CAL")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F2)           PORT_NAME("BAS")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_CAPSLOCK)     PORT_NAME("CAPS")       PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_HOME)         PORT_NAME("ANS")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_TAB)          PORT_NAME("TAB")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_SPACE)        PORT_NAME("SPACE")      PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(' ')
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_DOWN)         PORT_NAME("DOWN")       PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(UCHAR_MAMEKEY(DOWN))
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_UP)           PORT_NAME("UP")         PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(UCHAR_MAMEKEY(UP))
	PORT_START("LINE4")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_LEFT)         PORT_NAME("LEFT")       PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(UCHAR_MAMEKEY(LEFT))
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_RIGHT)        PORT_NAME("RIGHT")      PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F4)           PORT_NAME("CONS")       PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_0)            PORT_NAME("0")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('0')
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_STOP)         PORT_NAME(".")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('.')
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_BACKSLASH)    PORT_NAME("+/-")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_PLUS_PAD)     PORT_NAME("+")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('+')
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_ENTER)        PORT_NAME("RET")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(13)
	PORT_START("LINE5")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_L)            PORT_NAME("L")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('L')  PORT_CHAR('=')
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_COLON)        PORT_NAME(";")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(';')  PORT_CHAR(':')
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_DEL)          PORT_NAME("DEL")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(UCHAR_MAMEKEY(DEL))
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_1)            PORT_NAME("1")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('1')
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_2)            PORT_NAME("2")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('2')
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_3)            PORT_NAME("3")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('3')
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_MINUS)        PORT_NAME("-")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('-')
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F5)           PORT_NAME("M+")         PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_START("LINE6")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_I)            PORT_NAME("I")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('I')  PORT_CHAR('<')
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_O)            PORT_NAME("O")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('O')  PORT_CHAR('>')
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_INSERT)       PORT_NAME("INS")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(UCHAR_MAMEKEY(INSERT))
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_4)            PORT_NAME("4")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('4')
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_5)            PORT_NAME("5")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('5')
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_6)            PORT_NAME("6")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('6')
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_ASTERISK)     PORT_NAME("*")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('*')
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F6)           PORT_NAME("RM")         PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_START("LINE7")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_P)            PORT_NAME("P")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('P')  PORT_CHAR('@')
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_BACKSPACE)    PORT_NAME("BS")         PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(UCHAR_MAMEKEY(BACKSPACE))
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F7)           PORT_NAME("n!")         PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_7)            PORT_NAME("7")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('7')
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_8)            PORT_NAME("8")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('8')
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_9)            PORT_NAME("9")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('9')
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_SLASH)        PORT_NAME("/")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('/')
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_CLOSEBRACE)   PORT_NAME(")")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(')')
	PORT_START("LINE8")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_1_PAD)        PORT_NAME("hyp")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_2_PAD)        PORT_NAME("DEG")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_3_PAD)        PORT_NAME("y^x")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('^')
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_4_PAD)        PORT_NAME("sqrt")       PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_5_PAD)        PORT_NAME("x^2")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_OPENBRACE)    PORT_NAME("(")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('(')
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_6_PAD)        PORT_NAME("1/x")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_7_PAD)        PORT_NAME("MDF")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_START("LINE9")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_LCONTROL)     PORT_NAME("2nd")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_8_PAD)        PORT_NAME("sin")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_9_PAD)        PORT_NAME("cos")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_0_PAD)        PORT_NAME("ln")         PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F8)           PORT_NAME("log")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F9)           PORT_NAME("tan")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F11)          PORT_NAME("FSE")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_ESC)          PORT_NAME("CCE")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_START("SHIFT")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_LSHIFT)       PORT_NAME("Shift")      PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(UCHAR_SHIFT_1)
	PORT_START("ON")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_PGUP)         PORT_NAME("ON")         PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  on_irq, nullptr )
INPUT_PORTS_END

static INPUT_PORTS_START( pcg850v )
	PORT_START("BATTERY")
	PORT_CONFNAME( 0x01, 0x00, "Battery Status" )
	PORT_CONFSETTING( 0x00, DEF_STR( Normal ) )
	PORT_CONFSETTING( 0x01, "Low Battery" )

	PORT_START("LINE0")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F10)          PORT_NAME("OFF")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_Q)            PORT_NAME("Q")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('Q')  PORT_CHAR('!')
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_W)            PORT_NAME("W")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('W')  PORT_CHAR('"')
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_E)            PORT_NAME("E")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('E')  PORT_CHAR('#')
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_R)            PORT_NAME("R")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('R')  PORT_CHAR('$')
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_T)            PORT_NAME("T")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('T')  PORT_CHAR('%')
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_Y)            PORT_NAME("Y")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('Y')  PORT_CHAR('&')
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_U)            PORT_NAME("U")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('U')  PORT_CHAR('\'')
	PORT_START("LINE1")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_A)            PORT_NAME("A")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('A')  PORT_CHAR('[')
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_S)            PORT_NAME("S")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('S')  PORT_CHAR(']')
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_D)            PORT_NAME("D")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('D')  PORT_CHAR('{')
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F)            PORT_NAME("F")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('F')  PORT_CHAR('}')
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_G)            PORT_NAME("G")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('G')
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_H)            PORT_NAME("H")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('H')  PORT_CHAR('|')
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_J)            PORT_NAME("J")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('J')  PORT_CHAR('`')
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_K)            PORT_NAME("K")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('K')  PORT_CHAR('_')
	PORT_START("LINE2")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_Z)            PORT_NAME("Z")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('Z')
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_X)            PORT_NAME("X")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('X')
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_C)            PORT_NAME("C")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('C')
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_V)            PORT_NAME("V")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('V')
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_B)            PORT_NAME("B")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('B')
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_N)            PORT_NAME("N")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('N')
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_M)            PORT_NAME("M")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('M')
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_COMMA)        PORT_NAME(",")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(',')  PORT_CHAR('?')
	PORT_START("LINE3")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F1)           PORT_NAME("BAS")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F2)           PORT_NAME("TEXT")       PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_CAPSLOCK)     PORT_NAME("CAPS")       PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_HOME)         PORT_NAME("KANA")       PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_TAB)          PORT_NAME("TAB")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_SPACE)        PORT_NAME("SPACE")      PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(' ')
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_DOWN)         PORT_NAME("DOWN")       PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(UCHAR_MAMEKEY(DOWN))
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_UP)           PORT_NAME("UP")         PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(UCHAR_MAMEKEY(UP))
	PORT_START("LINE4")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_LEFT)         PORT_NAME("LEFT")       PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(UCHAR_MAMEKEY(LEFT))
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_RIGHT)        PORT_NAME("RIGHT")      PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F4)           PORT_NAME("CONS")       PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_0)            PORT_NAME("0")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('0')
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_STOP)         PORT_NAME(".")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('.')
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_EQUALS)       PORT_NAME("=")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('=')
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_PLUS_PAD)     PORT_NAME("+")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('+')
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_ENTER)        PORT_NAME("RET")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(13)
	PORT_START("LINE5")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_L)            PORT_NAME("L")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('L')  PORT_CHAR('=')
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_COLON)        PORT_NAME(";")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(';')  PORT_CHAR(':')
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_DEL)          PORT_NAME("DEL")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(UCHAR_MAMEKEY(DEL))
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_1)            PORT_NAME("1")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('1')
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_2)            PORT_NAME("2")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('2')
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_3)            PORT_NAME("3")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('3')
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_MINUS)        PORT_NAME("-")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('-')
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F5)           PORT_NAME("M+")         PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_START("LINE6")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_I)            PORT_NAME("I")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('I')  PORT_CHAR('<')
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_O)            PORT_NAME("O")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('O')  PORT_CHAR('>')
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_INSERT)       PORT_NAME("INS")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(UCHAR_MAMEKEY(INSERT))
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_4)            PORT_NAME("4")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('4')
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_5)            PORT_NAME("5")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('5')
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_6)            PORT_NAME("6")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('6')
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_ASTERISK)     PORT_NAME("*")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('*')
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F6)           PORT_NAME("RM")         PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_START("LINE7")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_P)            PORT_NAME("P")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('P')  PORT_CHAR('@')
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_BACKSPACE)    PORT_NAME("BS")         PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(UCHAR_MAMEKEY(BACKSPACE))
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F7)           PORT_NAME("pi")         PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_7)            PORT_NAME("7")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('7')
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_8)            PORT_NAME("8")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('8')
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_9)            PORT_NAME("9")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('9')
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_SLASH)        PORT_NAME("/")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('/')
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_CLOSEBRACE)   PORT_NAME(")")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(')')
	PORT_START("LINE8")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_1_PAD)        PORT_NAME("nPr")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_2_PAD)        PORT_NAME("DEG")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_3_PAD)        PORT_NAME("SQR")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_4_PAD)        PORT_NAME("SQU")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_5_PAD)        PORT_NAME("x^y")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('^')
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_OPENBRACE)    PORT_NAME("(")          PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR('(')
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_6_PAD)        PORT_NAME("1/x")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_7_PAD)        PORT_NAME("MDF")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_START("LINE9")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_LCONTROL)     PORT_NAME("2nd")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_8_PAD)        PORT_NAME("sin")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_9_PAD)        PORT_NAME("cos")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_0_PAD)        PORT_NAME("ln")         PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F8)           PORT_NAME("log")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F9)           PORT_NAME("tan")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_F11)          PORT_NAME("FSE")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_ESC)          PORT_NAME("CCE")        PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )
	PORT_START("SHIFT")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_LSHIFT)       PORT_NAME("Shift")      PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  kb_irq, nullptr )  PORT_CHAR(UCHAR_SHIFT_1)
	PORT_START("ON")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD)    PORT_CODE(KEYCODE_PGUP)         PORT_NAME("ON")         PORT_CHANGED_MEMBER(DEVICE_SELF, pce220_state,  on_irq, nullptr )
INPUT_PORTS_END

void pce220_state::machine_start()
{
	uint8_t *rom = memregion("user1")->base();
	uint8_t *ram = m_ram->pointer();

	membank("bank1")->configure_entries(0, 2, ram + 0x0000, 0x8000);
	membank("bank2")->configure_entries(0, 2, ram + 0x4000, 0x8000);
	membank("bank3")->configure_entries(0, 8, rom, 0x4000);
	membank("bank4")->configure_entries(0, 8, rom, 0x4000);

	m_vram = (uint8_t*)memregion("lcd_vram")->base();

	machine().device<nvram_device>("nvram")->set_base(ram, m_ram->size());
}

void pcg850v_state::machine_start()
{
	uint8_t *rom = memregion("user1")->base();
	uint8_t *ram = m_ram->pointer();

	membank("bank1")->configure_entries(0, 2, ram + 0x0000, 0x8000);
	membank("bank2")->configure_entries(0, 2, ram + 0x4000, 0x8000);
	membank("bank3")->configure_entries(0, 22, rom, 0x4000);
	membank("bank4")->configure_entries(0, 22, rom, 0x4000);

	m_vram = (uint8_t*)memregion("lcd_vram")->base();
	machine().device<nvram_device>("nvram")->set_base(ram, m_ram->size());
}

void pce220_state::machine_reset()
{
	address_space &space = m_maincpu->space(AS_PROGRAM);
	space.unmap_write(0x0000, 0x3fff);

	// install the boot code into the first bank
	membank("bank1")->set_base(memregion("user1")->base() + 0x0000);

	m_lcd_index_row = 0;
	m_lcd_index_col = 0;
	m_lcd_start_line = 0;
	m_lcd_on = 0;
	m_bank_num = 0;
	m_irq_mask = 0;
	m_irq_flag = 0;
	m_timer_status = 0;
	m_kb_matrix = 0;
}

void pcg850v_state::machine_reset()
{
	pce220_state::machine_reset();

	m_g850v_bank_num = 0;
	m_lcd_effects = 0;
	m_lcd_contrast = 0;
	m_lcd_read_mode = 0;
}

TIMER_DEVICE_CALLBACK_MEMBER(pce220_state::pce220_timer_callback)
{
	m_timer_status = !m_timer_status;

	if (m_irq_mask & IRQ_FLAG_TIMER)
	{
		m_maincpu->set_input_line(0, HOLD_LINE );

		m_irq_flag = (m_irq_flag & 0xfb) | (m_timer_status<<2);
	}
}

PALETTE_INIT_MEMBER(pce220_state,pce220)
{
	palette.set_pen_color(0, rgb_t(138, 146, 148));
	palette.set_pen_color(1, rgb_t(92, 83, 88));
}


MACHINE_CONFIG_START(pce220_state::pce220)
	/* basic machine hardware */
	MCFG_DEVICE_ADD("maincpu",Z80, 3072000 ) // CMOS-SC7852
	MCFG_DEVICE_PROGRAM_MAP(pce220_mem)
	MCFG_DEVICE_IO_MAP(pce220_io)

	/* video hardware */
	// 4 lines x 24 characters, resp. 144 x 32 pixel
	MCFG_SCREEN_ADD("screen", LCD)
	MCFG_SCREEN_REFRESH_RATE(50)
	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
	MCFG_SCREEN_UPDATE_DRIVER(pce220_state, screen_update)
	MCFG_SCREEN_SIZE(24*6, 4*8)
	MCFG_SCREEN_VISIBLE_AREA(0, 24*6-1, 0, 4*8-1)
	MCFG_SCREEN_PALETTE("palette")

	MCFG_PALETTE_ADD("palette", 2)
	MCFG_PALETTE_INIT_OWNER(pce220_state,pce220)
	MCFG_DEFAULT_LAYOUT(layout_lcd)

	/* sound hardware */
	SPEAKER(config, "mono").front_center();
	MCFG_DEVICE_ADD("beeper", BEEP, 3250)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)

	MCFG_TIMER_DRIVER_ADD_PERIODIC("pce220_timer", pce220_state, pce220_timer_callback, attotime::from_msec(468))

	MCFG_NVRAM_ADD_0FILL("nvram")

	/* internal ram */
	MCFG_RAM_ADD(RAM_TAG)
	MCFG_RAM_DEFAULT_SIZE("64K") // 32K internal + 32K external card

	MCFG_PCE220_SERIAL_ADD(PCE220SERIAL_TAG)
MACHINE_CONFIG_END

MACHINE_CONFIG_START(pcg850v_state::pcg815)
	/* basic machine hardware */
	MCFG_DEVICE_ADD("maincpu",Z80, XTAL(4'000'000) ) // 3.54MHz
	MCFG_DEVICE_PROGRAM_MAP(pce220_mem)
	MCFG_DEVICE_IO_MAP(pcg850v_io)

	/* video hardware */
	// 4 lines x 24 characters, resp. 144 x 32 pixel
	MCFG_SCREEN_ADD("screen", LCD)
	MCFG_SCREEN_REFRESH_RATE(50)
	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
	MCFG_SCREEN_UPDATE_DRIVER(pcg850v_state, screen_update)
	MCFG_SCREEN_SIZE(144, 32)
	MCFG_SCREEN_VISIBLE_AREA(0, 144-1, 0, 32-1)
	MCFG_SCREEN_PALETTE("palette")

	MCFG_PALETTE_ADD("palette", 2)
	MCFG_PALETTE_INIT_OWNER(pce220_state,pce220)
	MCFG_DEFAULT_LAYOUT(layout_lcd)

	/* sound hardware */
	SPEAKER(config, "mono").front_center();
	MCFG_DEVICE_ADD("beeper", BEEP, 3250)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)

	MCFG_TIMER_DRIVER_ADD_PERIODIC("pce220_timer", pce220_state, pce220_timer_callback, attotime::from_msec(468))

	MCFG_NVRAM_ADD_0FILL("nvram")

	/* internal ram */
	MCFG_RAM_ADD(RAM_TAG)
	MCFG_RAM_DEFAULT_SIZE("64K") // 32K internal + 32K external card

	MCFG_PCE220_SERIAL_ADD(PCE220SERIAL_TAG)
MACHINE_CONFIG_END

MACHINE_CONFIG_START(pcg850v_state::pcg850v)
	/* basic machine hardware */
	MCFG_DEVICE_ADD("maincpu",Z80, XTAL(8'000'000) ) // CMOS-SC7852
	MCFG_DEVICE_PROGRAM_MAP(pce220_mem)
	MCFG_DEVICE_IO_MAP(pcg850v_io)

	/* video hardware */
	// 6 lines x 24 characters, resp. 144 x 48 pixel
	MCFG_SCREEN_ADD("screen", LCD)
	MCFG_SCREEN_REFRESH_RATE(50)
	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
	MCFG_SCREEN_UPDATE_DRIVER(pcg850v_state, screen_update)
	MCFG_SCREEN_SIZE(144, 48)
	MCFG_SCREEN_VISIBLE_AREA(0, 144-1, 0, 48-1)
	MCFG_SCREEN_PALETTE("palette")

	MCFG_PALETTE_ADD("palette", 2)
	MCFG_PALETTE_INIT_OWNER(pce220_state,pce220)
	MCFG_DEFAULT_LAYOUT(layout_lcd)

	/* sound hardware */
	SPEAKER(config, "mono").front_center();
	MCFG_DEVICE_ADD("beeper", BEEP, 3250)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)

	MCFG_TIMER_DRIVER_ADD_PERIODIC("pce220_timer", pce220_state, pce220_timer_callback, attotime::from_msec(468))

	MCFG_NVRAM_ADD_0FILL("nvram")

	/* internal ram */
	MCFG_RAM_ADD(RAM_TAG)
	MCFG_RAM_DEFAULT_SIZE("64K") // 32K internal + 32K external card

	MCFG_PCE220_SERIAL_ADD(PCE220SERIAL_TAG)
MACHINE_CONFIG_END

/* ROM definition */
ROM_START( pce220 )
	ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
	ROM_REGION( 0x20000, "user1", ROMREGION_ERASEFF )
	ROM_SYSTEM_BIOS( 0, "v1", "v 0.1")
	ROM_SYSTEM_BIOS( 1, "v2", "v 0.2")
	ROM_LOAD( "bank0.bin",      0x0000, 0x4000, CRC(1fa94d11) SHA1(24c54347dbb1423388360a359aa09db47d2057b7))
	ROM_LOAD( "bank1.bin",      0x4000, 0x4000, CRC(0f9864b0) SHA1(6b7301c96f1a865e1931d82872a1ed5d1f80644e))
	ROM_LOAD( "bank2.bin",      0x8000, 0x4000, CRC(1625e958) SHA1(090440600d461aa7efe4adbf6e975aa802aabeec))
	ROM_LOAD( "bank3.bin",      0xc000, 0x4000, CRC(ed9a57f8) SHA1(58087dc64103786a40325c0a1e04bd88bfd6da57))
	ROM_LOAD( "bank4.bin",     0x10000, 0x4000, CRC(e37665ae) SHA1(85f5c84f69f79e7ac83b30397b2a1d9629f9eafa))
	ROMX_LOAD( "bank5.bin",     0x14000, 0x4000, CRC(6b116e7a) SHA1(b29f5a070e846541bddc88b5ee9862cc36b88eee),ROM_BIOS(2))
	ROMX_LOAD( "bank5_0.1.bin", 0x14000, 0x4000, CRC(13c26eb4) SHA1(b9cd0efd6b195653b9610e20ad8aab541824a689),ROM_BIOS(1))
	ROMX_LOAD( "bank6.bin",     0x18000, 0x4000, CRC(4fbfbd18) SHA1(e5aab1df172dcb94aa90e7d898eacfc61157ff15),ROM_BIOS(2))
	ROMX_LOAD( "bank6_0.1.bin", 0x18000, 0x4000, CRC(e2cda7a6) SHA1(01b1796d9485fde6994cb5afbe97514b54cfbb3a),ROM_BIOS(1))
	ROMX_LOAD( "bank7.bin",     0x1c000, 0x4000, CRC(5e98b5b6) SHA1(f22d74d6a24f5929efaf2983caabd33859232a94),ROM_BIOS(2))
	ROMX_LOAD( "bank7_0.1.bin", 0x1c000, 0x4000, CRC(d8e821b2) SHA1(18245a75529d2f496cdbdc28cdf40def157b20c0),ROM_BIOS(1))

	ROM_REGION( 0x200, "lcd_vram", ROMREGION_ERASE00)   //HD61202 internal RAM (4096 bits)
ROM_END

ROM_START( pcg815 )
	ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
	ROM_REGION( 0x58000, "user1", ROMREGION_ERASEFF )
	ROM_LOAD( "rom00.bin",    0x000000, 0x004000, CRC(43767d51) SHA1(0d8b8b88a5d084f750daffc0abbb6b868fd3f144) )
	ROM_LOAD( "rom01.bin",    0x004000, 0x004000, CRC(b0e32ace) SHA1(e84c84c18c09dd2920fa38e77d8049b980692d29) )
	ROM_LOAD( "rom02.bin",    0x008000, 0x004000, CRC(f5cb78ba) SHA1(dfb2e415a5603a820b960d810995dd1109d84547) )
	ROM_LOAD( "rom03.bin",    0x00c000, 0x004000, CRC(5eff142b) SHA1(71d8d0a1bd0bcdef43f951036d9e1da0377d6a33) )
	ROM_LOAD( "rom04.bin",    0x010000, 0x004000, CRC(cb91bab5) SHA1(5b354ba6fc48043f03b573ad470518e9bb48cf99) )
	ROM_LOAD( "rom05.bin",    0x014000, 0x004000, CRC(ccaa1876) SHA1(404bf36c3832ee1a4602fa6a917d1ef2db5411c1) )
	ROM_LOAD( "rom06.bin",    0x018000, 0x004000, CRC(9d80802f) SHA1(aec989b8763d1346313a13c761ed0306b4f84257) )
	ROM_LOAD( "rom07.bin",    0x01c000, 0x004000, CRC(618a7be8) SHA1(5f16e47eeeb9c153bb95c6d6e3af276576b8274e) )
	ROM_LOAD( "rom08.bin",    0x020000, 0x004000, CRC(d8ba21a9) SHA1(a5580f22864afee8d4a8f1ecf6231acbde16b612) )
	ROM_LOAD( "rom09.bin",    0x024000, 0x004000, CRC(f6f49677) SHA1(e0d70a11b7dd21662cb444ac93d4b43f584909b5) )
	ROM_LOAD( "rom0a.bin",    0x028000, 0x004000, CRC(ecbabb64) SHA1(14beef60dfd1f18375459e9acb9527589e09e3ce) )
	ROM_LOAD( "base.bin",     0x02c000, 0x000040, CRC(1a8b2044) SHA1(8576c69532d138eb78ff7a59f668a1a62a670447) )

	ROM_REGION( 0x1000, "lcd_vram", ROMREGION_ERASE00)
ROM_END

ROM_START( pcg850v )
	ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
	ROM_REGION( 0x58000, "user1", ROMREGION_ERASEFF )
	ROM_LOAD( "rom00.bin", 0x00000, 0x4000, CRC(c41a7a3e) SHA1(8b85d07e6f2fa048f8a958c261ab3344df750bd2))
	ROM_LOAD( "rom01.bin", 0x04000, 0x4000, CRC(45cafcaf) SHA1(e6142ac2ddb50c90bf1afd03ee2d2741abde8b76))
	ROM_LOAD( "rom02.bin", 0x08000, 0x4000, CRC(c81a804e) SHA1(322b9c6ca5cb7bc41a55c7874838e601ef50644e))
	ROM_LOAD( "rom03.bin", 0x0c000, 0x4000, CRC(9301e937) SHA1(b152186577abf86a7fb535cd63985f2a67e154b9))
	ROM_LOAD( "rom04.bin", 0x10000, 0x4000, CRC(6bf11755) SHA1(fe7458758d26fabfcca34e791fe2425104830b7b))
	ROM_LOAD( "rom05.bin", 0x14000, 0x4000, CRC(8a808f5e) SHA1(448caf0cc30de483d876c31785c8bb27305860b8))
	ROM_LOAD( "rom06.bin", 0x18000, 0x4000, CRC(3902f135) SHA1(40fbd51718a830e3f374843990522e29508376fd))
	ROM_LOAD( "rom07.bin", 0x1c000, 0x4000, CRC(618a7be8) SHA1(5f16e47eeeb9c153bb95c6d6e3af276576b8274e))
	ROM_LOAD( "rom08.bin", 0x20000, 0x4000, CRC(bf05b34d) SHA1(8556d64ddd89191c9dc048280e384f9146d81a16))
	ROM_LOAD( "rom09.bin", 0x24000, 0x4000, CRC(b75dbd0a) SHA1(ca149134a819fa52591ae1733270f8b3c811a18a))
	ROM_LOAD( "rom0a.bin", 0x28000, 0x4000, CRC(e7c5ec8f) SHA1(70cac20d4f01b5b2fdd76837659bc4947a1ebd21))
	ROM_LOAD( "rom0b.bin", 0x2c000, 0x4000, CRC(bdc4f889) SHA1(154d6223e8e750fcbffdb069215fee9492685747))
	ROM_LOAD( "rom0c.bin", 0x30000, 0x4000, CRC(6ef5560a) SHA1(5b2ad8e36354f448fe01acba1d2f69630de345a7))
	ROM_LOAD( "rom0d.bin", 0x34000, 0x4000, CRC(4295a44e) SHA1(0f8dfc759ed17f2b0acc1dc4912e881b1f0f65aa))
	ROM_LOAD( "rom0e.bin", 0x38000, 0x4000, CRC(0c8212e1) SHA1(8145728d87ea5a5e29c0e98c3d2d4278b1070359))
	ROM_LOAD( "rom0f.bin", 0x3c000, 0x4000, CRC(33c30dba) SHA1(296fb6fa3921822c3458acde0962c3a25cb19a1e))
	ROM_LOAD( "rom10.bin", 0x40000, 0x4000, CRC(553a0926) SHA1(2149827f9a2eb879756b3da609e17fc5b1c9bd78))
	ROM_LOAD( "rom11.bin", 0x44000, 0x4000, CRC(385a128d) SHA1(eda1192a75e4cfb50c0ac058f230a84cbfe67d51))
	ROM_LOAD( "rom12.bin", 0x48000, 0x4000, CRC(cd12dfca) SHA1(50a5defdeb4da9b2eac196816559056fc55e1dca))
	ROM_LOAD( "rom13.bin", 0x4c000, 0x4000, CRC(9bca873b) SHA1(4ce43553fb15c0ca866e9582a3ef8dc22a2795b4))
	ROM_LOAD( "rom14.bin", 0x50000, 0x4000, CRC(a2938c40) SHA1(d2c24401eea5e56268ef6eadcc612c8bbaa3342a))
	ROM_LOAD( "rom15.bin", 0x54000, 0x4000, CRC(53a0bf0a) SHA1(bf27baeaf208628fbe3c959d623cc08de21cf9f8))

	ROM_REGION( 0x1000, "lcd_vram", ROMREGION_ERASE00)
ROM_END

/* Driver */

//    YEAR  NAME     PARENT  COMPAT  MACHINE  INPUT    CLASS          INIT        COMPANY  FULLNAME    FLAGS
COMP( 1991, pce220,  0,      0,      pce220,  pce220,  pce220_state,  empty_init, "Sharp", "PC-E220",  MACHINE_NOT_WORKING )
COMP( 1992, pcg815,  0,      0,      pcg815,  pcg850v, pcg850v_state, empty_init, "Sharp", "PC-G815",  MACHINE_NOT_WORKING )
COMP( 2001, pcg850v, 0,      0,      pcg850v, pcg850v, pcg850v_state, empty_init, "Sharp", "PC-G850V", MACHINE_NOT_WORKING )