summaryrefslogblamecommitdiffstatshomepage
path: root/src/mess/drivers/n64.c
blob: e42e9108f1f5da823e0475bb158c1960490c38d8 (plain) (tree)
1
2

                               















                                               



                                                                                        
                                               




                                             
                                                   
                                       


                                        



                          
                                                                   
                                                                                            
                                                                                                      

                                                                                                   

                                                                                                        





                                                                                                                           
                                                            


                                                                                                                         


                                                                                                  
                                                                     
                                                                                        
                                                                                                      

                                                                                                   

                                                                                                        





                                                                                                                           
                                                                                                                  



                                                                                                                         


                                                                                                  
                                                                   



                                                                    



                               

                                                                                                      




















                                                                                                                                        

                                                                                                      

























                                                                                                                                        
     


                                  


                                                 
  
      
 
                                              


























                                                                                                   
                                     

 
                                                 

                      
                                                                    
                                                 


















































                                                                                                               
                                                  
                                                               














                                                                               
                                          
 
                        
 
                                                













                                             
                                                    
 
                                                                    
                                                                                 

 
                                                  




                                                   
                                                                            




                                          








                                                       
                                                               
 
                                           
 














                                                            
                                                   








                                                 
                                                          





































                                                                                                                   

                                                                                                                                             
// license:MAME|GPL-2.0+
// copyright-holders:Ryan Holtz
/*
    Nintendo 64

    Driver by Ville Linde
    Reformatted to share hardware by R. Belmont
    Additional work by Ryan Holtz
    Porting from Mupen64 by Harmony
*/

#include "emu.h"
#include "cpu/rsp/rsp.h"
#include "cpu/mips/mips3.h"
#include "sound/dmadac.h"
#include "imagedev/cartslot.h"
#include "includes/n64.h"

class n64_mess_state : public n64_state
{
public:
	n64_mess_state(const machine_config &mconfig, device_type type, const char *tag)
		: n64_state(mconfig, type, tag)
		{ }

	DECLARE_READ32_MEMBER(dd_null_r);
	DECLARE_MACHINE_START(n64dd);
	INTERRUPT_GEN_MEMBER(n64_reset_poll);
	DECLARE_DEVICE_IMAGE_LOAD_MEMBER(n64_cart);
	void mempak_format(UINT8* pak);
};

READ32_MEMBER(n64_mess_state::dd_null_r)
{
	return 0xffffffff;
}

static ADDRESS_MAP_START( n64_map, AS_PROGRAM, 32, n64_mess_state )
	AM_RANGE(0x00000000, 0x007fffff) AM_RAM AM_SHARE("rdram")                   // RDRAM
	AM_RANGE(0x03f00000, 0x03f00027) AM_DEVREADWRITE("rcp", n64_periphs, rdram_reg_r, rdram_reg_w)
	AM_RANGE(0x04000000, 0x04000fff) AM_RAM AM_SHARE("rsp_dmem")                    // RSP DMEM
	AM_RANGE(0x04001000, 0x04001fff) AM_RAM AM_SHARE("rsp_imem")                    // RSP IMEM
	AM_RANGE(0x04040000, 0x040fffff) AM_DEVREADWRITE("rcp", n64_periphs, sp_reg_r, sp_reg_w)  // RSP
	AM_RANGE(0x04100000, 0x041fffff) AM_DEVREADWRITE("rcp", n64_periphs, dp_reg_r, dp_reg_w)  // RDP
	AM_RANGE(0x04300000, 0x043fffff) AM_DEVREADWRITE("rcp", n64_periphs, mi_reg_r, mi_reg_w)    // MIPS Interface
	AM_RANGE(0x04400000, 0x044fffff) AM_DEVREADWRITE("rcp", n64_periphs, vi_reg_r, vi_reg_w)    // Video Interface
	AM_RANGE(0x04500000, 0x045fffff) AM_DEVREADWRITE("rcp", n64_periphs, ai_reg_r, ai_reg_w)    // Audio Interface
	AM_RANGE(0x04600000, 0x046fffff) AM_DEVREADWRITE("rcp", n64_periphs, pi_reg_r, pi_reg_w)    // Peripheral Interface
	AM_RANGE(0x04700000, 0x047fffff) AM_DEVREADWRITE("rcp", n64_periphs, ri_reg_r, ri_reg_w)    // RDRAM Interface
	AM_RANGE(0x04800000, 0x048fffff) AM_DEVREADWRITE("rcp", n64_periphs, si_reg_r, si_reg_w)    // Serial Interface
	AM_RANGE(0x05000508, 0x0500050b) AM_READ(dd_null_r);
	AM_RANGE(0x08000000, 0x0801ffff) AM_RAM AM_SHARE("sram")                                        // Cartridge SRAM
	AM_RANGE(0x10000000, 0x13ffffff) AM_ROM AM_REGION("user2", 0)                                   // Cartridge
	AM_RANGE(0x1fc00000, 0x1fc007bf) AM_ROM AM_REGION("user1", 0)                                   // PIF ROM
	AM_RANGE(0x1fc007c0, 0x1fc007ff) AM_DEVREADWRITE("rcp", n64_periphs, pif_ram_r, pif_ram_w)
ADDRESS_MAP_END

static ADDRESS_MAP_START( n64dd_map, AS_PROGRAM, 32, n64_mess_state )
	AM_RANGE(0x00000000, 0x007fffff) AM_RAM AM_SHARE("rdram")               // RDRAM
	AM_RANGE(0x03f00000, 0x03f00027) AM_DEVREADWRITE("rcp", n64_periphs, rdram_reg_r, rdram_reg_w)
	AM_RANGE(0x04000000, 0x04000fff) AM_RAM AM_SHARE("rsp_dmem")                    // RSP DMEM
	AM_RANGE(0x04001000, 0x04001fff) AM_RAM AM_SHARE("rsp_imem")                    // RSP IMEM
	AM_RANGE(0x04040000, 0x040fffff) AM_DEVREADWRITE("rcp", n64_periphs, sp_reg_r, sp_reg_w)  // RSP
	AM_RANGE(0x04100000, 0x041fffff) AM_DEVREADWRITE("rcp", n64_periphs, dp_reg_r, dp_reg_w)  // RDP
	AM_RANGE(0x04300000, 0x043fffff) AM_DEVREADWRITE("rcp", n64_periphs, mi_reg_r, mi_reg_w)    // MIPS Interface
	AM_RANGE(0x04400000, 0x044fffff) AM_DEVREADWRITE("rcp", n64_periphs, vi_reg_r, vi_reg_w)    // Video Interface
	AM_RANGE(0x04500000, 0x045fffff) AM_DEVREADWRITE("rcp", n64_periphs, ai_reg_r, ai_reg_w)    // Audio Interface
	AM_RANGE(0x04600000, 0x046fffff) AM_DEVREADWRITE("rcp", n64_periphs, pi_reg_r, pi_reg_w)    // Peripheral Interface
	AM_RANGE(0x04700000, 0x047fffff) AM_DEVREADWRITE("rcp", n64_periphs, ri_reg_r, ri_reg_w)    // RDRAM Interface
	AM_RANGE(0x04800000, 0x048fffff) AM_DEVREADWRITE("rcp", n64_periphs, si_reg_r, si_reg_w)    // Serial Interface
	AM_RANGE(0x05000000, 0x05ffffff) AM_DEVREADWRITE("rcp", n64_periphs, dd_reg_r, dd_reg_w) // 64DD Interface
	AM_RANGE(0x06000000, 0x063fffff) AM_ROM AM_REGION("ddipl", 0)                                   // 64DD IPL ROM
	AM_RANGE(0x08000000, 0x0801ffff) AM_RAM AM_SHARE("sram")                                        // Cartridge SRAM
	AM_RANGE(0x10000000, 0x13ffffff) AM_ROM AM_REGION("user2", 0)                                   // Cartridge
	AM_RANGE(0x1fc00000, 0x1fc007bf) AM_ROM AM_REGION("user1", 0)                                   // PIF ROM
	AM_RANGE(0x1fc007c0, 0x1fc007ff) AM_DEVREADWRITE("rcp", n64_periphs, pif_ram_r, pif_ram_w)
ADDRESS_MAP_END

static ADDRESS_MAP_START( rsp_map, AS_PROGRAM, 32, n64_mess_state )
	AM_RANGE(0x00000000, 0x00000fff) AM_RAM AM_SHARE("rsp_dmem")
	AM_RANGE(0x00001000, 0x00001fff) AM_RAM AM_SHARE("rsp_imem")
	AM_RANGE(0x04000000, 0x04000fff) AM_RAM AM_SHARE("rsp_dmem")
	AM_RANGE(0x04001000, 0x04001fff) AM_RAM AM_SHARE("rsp_imem")
ADDRESS_MAP_END

static INPUT_PORTS_START( n64 )
	PORT_START("P1")
	PORT_BIT( 0x8000, IP_ACTIVE_HIGH, IPT_BUTTON2 )        PORT_PLAYER(1) PORT_NAME("P1 Button A")
	PORT_BIT( 0x4000, IP_ACTIVE_HIGH, IPT_BUTTON1 )        PORT_PLAYER(1) PORT_NAME("P1 Button B")
	PORT_BIT( 0x2000, IP_ACTIVE_HIGH, IPT_BUTTON3 )        PORT_PLAYER(1) PORT_NAME("P1 Button Z")
	PORT_BIT( 0x1000, IP_ACTIVE_HIGH, IPT_START )          PORT_PLAYER(1) PORT_NAME("P1 Start")
	PORT_BIT( 0x0800, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP )    PORT_PLAYER(1) PORT_NAME("P1 Joypad \xE2\x86\x91") /* Up */
	PORT_BIT( 0x0400, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN )  PORT_PLAYER(1) PORT_NAME("P1 Joypad \xE2\x86\x93") /* Down */
	PORT_BIT( 0x0200, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT )  PORT_PLAYER(1) PORT_NAME("P1 Joypad \xE2\x86\x90") /* Left */
	PORT_BIT( 0x0100, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1) PORT_NAME("P1 Joypad \xE2\x86\x92") /* Right */
	PORT_BIT( 0x00c0, IP_ACTIVE_HIGH, IPT_UNUSED )
	PORT_BIT( 0x0020, IP_ACTIVE_HIGH, IPT_BUTTON4 )        PORT_PLAYER(1) PORT_NAME("P1 Button L")
	PORT_BIT( 0x0010, IP_ACTIVE_HIGH, IPT_BUTTON5 )        PORT_PLAYER(1) PORT_NAME("P1 Button R")
	PORT_BIT( 0x0008, IP_ACTIVE_HIGH, IPT_BUTTON6 )        PORT_PLAYER(1) PORT_NAME("P1 Button C \xE2\x86\x91") /* Up */
	PORT_BIT( 0x0004, IP_ACTIVE_HIGH, IPT_BUTTON7 )        PORT_PLAYER(1) PORT_NAME("P1 Button C \xE2\x86\x93") /* Down */
	PORT_BIT( 0x0002, IP_ACTIVE_HIGH, IPT_BUTTON8 )        PORT_PLAYER(1) PORT_NAME("P1 Button C \xE2\x86\x90") /* Left */
	PORT_BIT( 0x0001, IP_ACTIVE_HIGH, IPT_BUTTON9 )        PORT_PLAYER(1) PORT_NAME("P1 Button C \xE2\x86\x92") /* Right */

	PORT_START("P1_ANALOG_X")
	PORT_BIT( 0xff, 0x80, IPT_AD_STICK_X ) PORT_MINMAX(0x00,0xff) PORT_SENSITIVITY(30) PORT_KEYDELTA(30) PORT_PLAYER(1)

	PORT_START("P1_ANALOG_Y")
	PORT_BIT( 0xff, 0x80, IPT_AD_STICK_Y ) PORT_MINMAX(0x00,0xff) PORT_SENSITIVITY(30) PORT_KEYDELTA(30) PORT_PLAYER(1) PORT_REVERSE

	PORT_START("P2")
	PORT_BIT( 0x8000, IP_ACTIVE_HIGH, IPT_BUTTON2 )        PORT_PLAYER(2) PORT_NAME("P2 Button A")
	PORT_BIT( 0x4000, IP_ACTIVE_HIGH, IPT_BUTTON1 )        PORT_PLAYER(2) PORT_NAME("P2 Button B")
	PORT_BIT( 0x2000, IP_ACTIVE_HIGH, IPT_BUTTON3 )        PORT_PLAYER(2) PORT_NAME("P2 Button Z")
	PORT_BIT( 0x1000, IP_ACTIVE_HIGH, IPT_START )          PORT_PLAYER(2) PORT_NAME("P2 Start")
	PORT_BIT( 0x0800, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP )    PORT_PLAYER(2) PORT_NAME("P2 Joypad \xE2\x86\x91") /* Up */
	PORT_BIT( 0x0400, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN )  PORT_PLAYER(2) PORT_NAME("P2 Joypad \xE2\x86\x93") /* Down */
	PORT_BIT( 0x0200, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT )  PORT_PLAYER(2) PORT_NAME("P2 Joypad \xE2\x86\x90") /* Left */
	PORT_BIT( 0x0100, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2) PORT_NAME("P2 Joypad \xE2\x86\x92") /* Right */
	PORT_BIT( 0x00c0, IP_ACTIVE_HIGH, IPT_UNUSED )
	PORT_BIT( 0x0020, IP_ACTIVE_HIGH, IPT_BUTTON4 )        PORT_PLAYER(2) PORT_NAME("P2 Button L")
	PORT_BIT( 0x0010, IP_ACTIVE_HIGH, IPT_BUTTON5 )        PORT_PLAYER(2) PORT_NAME("P2 Button R")
	PORT_BIT( 0x0008, IP_ACTIVE_HIGH, IPT_BUTTON6 )        PORT_PLAYER(2) PORT_NAME("P2 Button C \xE2\x86\x91") /* Up */
	PORT_BIT( 0x0004, IP_ACTIVE_HIGH, IPT_BUTTON7 )        PORT_PLAYER(2) PORT_NAME("P2 Button C \xE2\x86\x93") /* Down */
	PORT_BIT( 0x0002, IP_ACTIVE_HIGH, IPT_BUTTON8 )        PORT_PLAYER(2) PORT_NAME("P2 Button C \xE2\x86\x90") /* Left */
	PORT_BIT( 0x0001, IP_ACTIVE_HIGH, IPT_BUTTON9 )        PORT_PLAYER(2) PORT_NAME("P2 Button C \xE2\x86\x92") /* Right */

	PORT_START("P2_ANALOG_X")
	PORT_BIT( 0xff, 0x80, IPT_AD_STICK_X ) PORT_MINMAX(0x00,0xff) PORT_SENSITIVITY(30) PORT_KEYDELTA(30) PORT_PLAYER(2)

	PORT_START("P2_ANALOG_Y")
	PORT_BIT( 0xff, 0x80, IPT_AD_STICK_Y ) PORT_MINMAX(0x00,0xff) PORT_SENSITIVITY(30) PORT_KEYDELTA(30) PORT_PLAYER(2) PORT_REVERSE

	PORT_START("RESET")
	PORT_BIT( 0xfffe, IP_ACTIVE_HIGH, IPT_UNUSED )
	PORT_BIT( 0x0001, IP_ACTIVE_HIGH, IPT_OTHER )        PORT_NAME("Warm Reset") PORT_CODE(KEYCODE_3)

INPUT_PORTS_END

#if 0
/* ?? */
static const mips3_config config =
{
	16384,              /* code cache size */
	8192,               /* data cache size */
	62500000            /* system clock */
};
#endif

void n64_mess_state::mempak_format(UINT8* pak)
{
	unsigned char pak_header[] =
	{
		0x81,0x01,0x02,0x03, 0x04,0x05,0x06,0x07, 0x08,0x09,0x0a,0x0b, 0x0c,0x0d,0x0e,0x0f,
		0x10,0x11,0x12,0x13, 0x14,0x15,0x16,0x17, 0x18,0x19,0x1a,0x1b, 0x1c,0x1d,0x1e,0x1f,
		0xff,0xff,0xff,0xff, 0x05,0x1a,0x5f,0x13, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
		0xff,0xff,0xff,0xff, 0xff,0xff,0xff,0xff, 0xff,0xff,0x01,0xff, 0x66,0x25,0x99,0xcd,
		0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
		0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
		0xff,0xff,0xff,0xff, 0x05,0x1a,0x5f,0x13, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
		0xff,0xff,0xff,0xff, 0xff,0xff,0xff,0xff, 0xff,0xff,0x01,0xff, 0x66,0x25,0x99,0xcd,
		0xff,0xff,0xff,0xff, 0x05,0x1a,0x5f,0x13, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
		0xff,0xff,0xff,0xff, 0xff,0xff,0xff,0xff, 0xff,0xff,0x01,0xff, 0x66,0x25,0x99,0xcd,
		0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
		0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
		0xff,0xff,0xff,0xff, 0x05,0x1a,0x5f,0x13, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
		0xff,0xff,0xff,0xff, 0xff,0xff,0xff,0xff, 0xff,0xff,0x01,0xff, 0x66,0x25,0x99,0xcd,
		0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
		0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
		0x00,0x71,0x00,0x03, 0x00,0x03,0x00,0x03, 0x00,0x03,0x00,0x03, 0x00,0x03,0x00,0x03
	};

	for (int i = 0; i < 0x8000; i += 2)
	{
		pak[i+0] = 0x00;
		pak[i+1] = 0x03;
	}
	memcpy(pak, pak_header, 272);
}

DEVICE_IMAGE_LOAD_MEMBER(n64_mess_state,n64_cart)
{
	int i, length;
	n64_periphs *periphs = machine().device<n64_periphs>("rcp");
	UINT8 *cart = memregion("user2")->base();

	if (image.software_entry() == NULL)
	{
		length = image.fread( cart, 0x4000000);
	}
	else
	{
		length = image.get_software_region_length("rom");
		memcpy(cart, image.get_software_region("rom"), length);
	}
	periphs->cart_length = length;

	if (cart[0] == 0x37 && cart[1] == 0x80)
	{
		for (i = 0; i < length; i += 4)
		{
			UINT8 b1 = cart[i + 0];
			UINT8 b2 = cart[i + 1];
			UINT8 b3 = cart[i + 2];
			UINT8 b4 = cart[i + 3];
			cart[i + 0] = b3;
			cart[i + 1] = b4;
			cart[i + 2] = b1;
			cart[i + 3] = b2;
		}
	}
	else
	{
		for (i = 0; i < length; i += 4)
		{
			UINT8 b1 = cart[i + 0];
			UINT8 b2 = cart[i + 1];
			UINT8 b3 = cart[i + 2];
			UINT8 b4 = cart[i + 3];
			cart[i + 0] = b4;
			cart[i + 1] = b3;
			cart[i + 2] = b2;
			cart[i + 3] = b1;
		}
	}

	periphs->m_nvram_image = image;

	logerror("cart length = %d\n", length);

	device_image_interface *battery_image = dynamic_cast<device_image_interface *>(periphs->m_nvram_image);
	if(battery_image)
	{
		//printf("Loading\n");
		UINT8 data[0x30800];
		battery_image->battery_load(data, 0x30800, 0x00);
		//memcpy(n64_sram, data, 0x20000);
		memcpy(memshare("sram")->ptr(), data, 0x20000);
		memcpy(periphs->m_save_data.eeprom, data + 0x20000, 0x800);
		memcpy(periphs->m_save_data.mempak[0], data + 0x20800, 0x8000);
		memcpy(periphs->m_save_data.mempak[1], data + 0x28800, 0x8000);
	}

	if(periphs->m_save_data.mempak[0][0] == 0) // Init if new
	{
		memset(periphs->m_save_data.eeprom, 0, 0x800);
		mempak_format(periphs->m_save_data.mempak[0]);
		mempak_format(periphs->m_save_data.mempak[1]);
	}

	return IMAGE_INIT_PASS;
}

MACHINE_START_MEMBER(n64_mess_state,n64dd)
{
	machine_start();

	UINT8 *ipl = memregion("ddipl")->base();

	for (int i = 0; i < 0x400000; i += 4)
	{
		UINT8 b1 = ipl[i + 0];
		UINT8 b2 = ipl[i + 1];
		UINT8 b3 = ipl[i + 2];
		UINT8 b4 = ipl[i + 3];
		ipl[i + 0] = b1;
		ipl[i + 1] = b2;
		ipl[i + 2] = b3;
		ipl[i + 3] = b4;
	}
}

INTERRUPT_GEN_MEMBER(n64_mess_state::n64_reset_poll)
{
	n64_periphs *periphs = machine().device<n64_periphs>("rcp");
	periphs->poll_reset_button((ioport("RESET")->read() & 1) ? true : false);
}

static MACHINE_CONFIG_START( n64, n64_mess_state )

	/* basic machine hardware */
	MCFG_CPU_ADD("maincpu", VR4300BE, 93750000)
	MCFG_CPU_CONFIG(config)
	MCFG_CPU_PROGRAM_MAP(n64_map)
	MCFG_CPU_VBLANK_INT_DRIVER("screen", n64_mess_state, n64_reset_poll)

	MCFG_CPU_ADD("rsp", RSP, 62500000)
	MCFG_CPU_CONFIG(n64_rsp_config)
	MCFG_CPU_PROGRAM_MAP(rsp_map)

	//MCFG_QUANTUM_TIME(attotime::from_hz(1000000))
	MCFG_QUANTUM_TIME(attotime::from_hz(1200))

	/* video hardware */
	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_REFRESH_RATE(60)
	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
	MCFG_SCREEN_SIZE(640, 525)
	MCFG_SCREEN_VISIBLE_AREA(0, 639, 0, 239)
	MCFG_SCREEN_UPDATE_DRIVER(n64_state, screen_update_n64)

	MCFG_PALETTE_ADD("palette", 0x1000)


	MCFG_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker")

	MCFG_SOUND_ADD("dac2", DMADAC, 0)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "lspeaker", 1.0)
	MCFG_SOUND_ADD("dac1", DMADAC, 0)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 1.0)

	MCFG_N64_PERIPHS_ADD("rcp");

	/* cartridge */
	MCFG_CARTSLOT_ADD("cart")
	MCFG_CARTSLOT_EXTENSION_LIST("v64,z64,rom,n64,bin")
	MCFG_CARTSLOT_MANDATORY
	MCFG_CARTSLOT_INTERFACE("n64_cart")
	MCFG_CARTSLOT_LOAD(n64_mess_state,n64_cart)

	/* software lists */
	MCFG_SOFTWARE_LIST_ADD("cart_list","n64")
MACHINE_CONFIG_END

static MACHINE_CONFIG_DERIVED( n64dd, n64 )
	MCFG_CPU_MODIFY("maincpu")
	MCFG_CPU_PROGRAM_MAP(n64dd_map)

	MCFG_MACHINE_START_OVERRIDE(n64_mess_state, n64dd)

	MCFG_CARTSLOT_MODIFY("cart")
	MCFG_CARTSLOT_NOT_MANDATORY
MACHINE_CONFIG_END

ROM_START( n64 )
	ROM_REGION( 0x800000, "maincpu", ROMREGION_ERASEFF )      /* dummy region for R4300 */

	ROM_REGION32_BE( 0x800, "user1", 0 )
	ROM_LOAD( "pifdata.bin", 0x0000, 0x0800, CRC(5ec82be9) SHA1(9174eadc0f0ea2654c95fd941406ab46b9dc9bdd) )

	ROM_REGION32_BE( 0x4000000, "user2", ROMREGION_ERASEFF)

	ROM_REGION16_BE( 0x80, "normpoint", 0 )
	ROM_LOAD( "normpnt.rom", 0x00, 0x80, CRC(e7f2a005) SHA1(c27b4a364a24daeee6e99fd286753fd6216362b4) )

	ROM_REGION16_BE( 0x80, "normslope", 0 )
	ROM_LOAD( "normslp.rom", 0x00, 0x80, CRC(4f2ae525) SHA1(eab43f8cc52c8551d9cff6fced18ef80eaba6f05) )
ROM_END

ROM_START( n64dd )
	ROM_REGION( 0x800000, "maincpu", ROMREGION_ERASEFF )      /* dummy region for R4300 */

	ROM_REGION32_BE( 0x800, "user1", 0 )
	ROM_LOAD( "pifdata.bin", 0x0000, 0x0800, CRC(5ec82be9) SHA1(9174eadc0f0ea2654c95fd941406ab46b9dc9bdd) )

	ROM_REGION32_BE( 0x4000000, "user2", ROMREGION_ERASEFF)

	ROM_REGION32_BE( 0x400000, "ddipl", ROMREGION_ERASEFF)
	ROM_LOAD( "64ddipl.bin", 0x000000, 0x400000, CRC(7f933ce2) SHA1(bf861922dcb78c316360e3e742f4f70ff63c9bc3) )

	ROM_REGION16_BE( 0x80, "normpoint", 0 )
	ROM_LOAD( "normpnt.rom", 0x00, 0x80, CRC(e7f2a005) SHA1(c27b4a364a24daeee6e99fd286753fd6216362b4) )

	ROM_REGION16_BE( 0x80, "normslope", 0 )
	ROM_LOAD( "normslp.rom", 0x00, 0x80, CRC(4f2ae525) SHA1(eab43f8cc52c8551d9cff6fced18ef80eaba6f05) )
ROM_END

CONS(1996, n64,     0,      0,      n64,    n64, driver_device, 0,  "Nintendo", "Nintendo 64", GAME_NOT_WORKING | GAME_IMPERFECT_GRAPHICS )
CONS(1996, n64dd,   n64,    0,      n64dd,  n64, driver_device, 0,  "Nintendo", "Nintendo 64DD", GAME_NOT_WORKING | GAME_IMPERFECT_GRAPHICS )