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

  /drivers/odyssey2.c

  Driver file to handle emulation of the Odyssey2.

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

#include "driver.h"
#include "cpu/i8039/i8039.h"
#include "video/generic.h"
#include "includes/odyssey2.h"
#include "devices/cartslot.h"
#include "inputx.h"

static ADDRESS_MAP_START( odyssey2_mem , ADDRESS_SPACE_PROGRAM, 8)
	AM_RANGE( 0x0000, 0x03FF) AM_ROM
	AM_RANGE( 0x0400, 0x0BFF) AM_RAMBANK(1)
	AM_RANGE( 0x0C00, 0x0FFF) AM_RAMBANK(2)
ADDRESS_MAP_END

static ADDRESS_MAP_START( odyssey2_io , ADDRESS_SPACE_IO, 8)
	AM_RANGE( 0x00,		 0xff)		AM_READWRITE( odyssey2_bus_r, odyssey2_bus_w)
	AM_RANGE( I8039_p1,	 I8039_p1)	AM_READWRITE( odyssey2_getp1, odyssey2_putp1 )
	AM_RANGE( I8039_p2,	 I8039_p2)	AM_READWRITE( odyssey2_getp2, odyssey2_putp2 )
	AM_RANGE( I8039_bus, I8039_bus)	AM_READWRITE( odyssey2_getbus, odyssey2_putbus )
	AM_RANGE( I8039_t1,  I8039_t1)	AM_READ( odyssey2_t1_r )
ADDRESS_MAP_END

static INPUT_PORTS_START( odyssey2 )
	PORT_START		/* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CHAR('0')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CHAR('2')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) PORT_CHAR('3')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) PORT_CHAR('4')
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5) PORT_CHAR('5')
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6) PORT_CHAR('6')
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7) PORT_CHAR('7')
	PORT_START		/* IN1 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) PORT_CHAR('8')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) PORT_CHAR('9')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("?? :") PORT_CODE(KEYCODE_F1) PORT_CHAR(UCHAR_MAMEKEY(F1))
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("?? $") PORT_CODE(KEYCODE_F2) PORT_CHAR(UCHAR_MAMEKEY(F2))
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('?')
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('L')
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CHAR('P')
	PORT_START		/* IN2 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_PLUS_PAD) PORT_CHAR('+')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CHAR('W')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CHAR('E')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) PORT_CHAR('R')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) PORT_CHAR('T')
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('U')
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('I')
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CHAR('O')
	PORT_START		/* IN3 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('Q')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('S')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_D) PORT_CHAR('D')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) PORT_CHAR('F')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('G')
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('H')
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('J')
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('K')
	PORT_START		/* IN4 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('A')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CHAR('Z')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CHAR('X')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_C) PORT_CHAR('C')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('V')
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('B')
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) PORT_CHAR('M')
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.')
	PORT_START		/* IN5 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ASTERISK) PORT_CHAR('*')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH_PAD) PORT_CHAR('/')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(DEF_STR( Yes )) PORT_CODE(KEYCODE_Y) PORT_CHAR('Y')
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(DEF_STR( No )) PORT_CODE(KEYCODE_N) PORT_CHAR('N')
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("CLR") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8)
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("ENT") PORT_CODE(KEYCODE_ENTER) PORT_CHAR('\r')
	PORT_START		/* IN6 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP)		PORT_PLAYER(1)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT)	PORT_PLAYER(1)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN)	PORT_PLAYER(1)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT)	PORT_PLAYER(1)
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1)			PORT_PLAYER(1)
	PORT_BIT ( 0xe0, 0xe0,	 IPT_UNUSED )
	PORT_START		/* IN7 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP)		PORT_PLAYER(2)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT)	PORT_PLAYER(2)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN)	PORT_PLAYER(2)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT)	PORT_PLAYER(2)
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1)			PORT_PLAYER(2)
	PORT_BIT ( 0xe0, 0xe0,	 IPT_UNUSED )
INPUT_PORTS_END

static const gfx_layout odyssey2_graphicslayout =
{
	8,1,
	256,                                    /* 256 characters */
	1,                      /* 1 bits per pixel */
	{ 0 },                  /* no bitplanes; 1 bit per pixel */
	/* x offsets */
	{
	0,
	1,
	2,
	3,
	4,
	5,
	6,
	7,
	},
	/* y offsets */
	{ 0 },
	1*8
};


static const gfx_layout odyssey2_spritelayout =
{
	8,1,
	256,                                    /* 256 characters */
	1,                      /* 1 bits per pixel */
	{ 0 },                  /* no bitplanes; 1 bit per pixel */
	/* x offsets */
	{
	7,6,5,4,3,2,1,0
	},
	/* y offsets */
	{ 0 },
	1*8
};

static GFXDECODE_START( odyssey2 )
	GFXDECODE_ENTRY( REGION_GFX1, 0x0000, odyssey2_graphicslayout, 0, 2 )
	GFXDECODE_ENTRY( REGION_GFX1, 0x0000, odyssey2_spritelayout, 0, 2 )
GFXDECODE_END

static MACHINE_DRIVER_START( odyssey2 )
	/* basic machine hardware */
	MDRV_CPU_ADD(I8048, 1790000/5)         /* 1.79 MHz */
	MDRV_CPU_PROGRAM_MAP(odyssey2_mem, 0)
	MDRV_CPU_IO_MAP(odyssey2_io, 0)
	MDRV_CPU_VBLANK_INT(odyssey2_line, 262)
	MDRV_SCREEN_REFRESH_RATE(60)
	MDRV_SCREEN_VBLANK_TIME(DEFAULT_REAL_60HZ_VBLANK_DURATION)
	MDRV_INTERLEAVE(1)

	MDRV_MACHINE_RESET( odyssey2 )

    /* video hardware */
	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)

	MDRV_SCREEN_SIZE(320,300)
	MDRV_SCREEN_VISIBLE_AREA(0,160-1,0,240-1)
	MDRV_GFXDECODE( odyssey2 )
	MDRV_PALETTE_LENGTH(24)
	MDRV_COLORTABLE_LENGTH(2)
	MDRV_PALETTE_INIT( odyssey2 )

	MDRV_VIDEO_START( odyssey2 )
	MDRV_VIDEO_UPDATE( odyssey2 )

	/* sound hardware */
	MDRV_SPEAKER_STANDARD_MONO("mono")
	MDRV_SOUND_ADD(CUSTOM, 0)
	MDRV_SOUND_CONFIG(odyssey2_sound_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MACHINE_DRIVER_END

ROM_START (odyssey2)
    ROM_REGION(0x10000,REGION_CPU1,0)    /* safer for the memory handler/bankswitching??? */
    ROM_LOAD ("o2bios.rom", 0x0000, 0x0400, CRC(8016a315) SHA1(b2e1955d957a475de2411770452eff4ea19f4cee))
    ROM_REGION(0x100, REGION_GFX1, 0)

    ROM_REGION(0x2000, REGION_USER1, 0)
	ROM_CART_LOAD(0, "bin", 0x0000, 0x2000, ROM_MIRROR)
ROM_END

static void odyssey2_cartslot_device_getinfo(const device_class *devclass, UINT32 state, union devinfo *info)
{
	/* cartslot */
	switch(state)
	{
		/* --- the following bits of info are returned as 64-bit signed integers --- */
		case DEVINFO_INT_COUNT:							info->i = 1; break;
		case DEVINFO_INT_MUST_BE_LOADED:				info->i = 1; break;

		/* --- the following bits of info are returned as pointers to data or functions --- */
		case DEVINFO_PTR_VERIFY:						info->imgverify = odyssey2_cart_verify; break;

		default:										cartslot_device_getinfo(devclass, state, info); break;
	}
}

SYSTEM_CONFIG_START(odyssey2)
	CONFIG_DEVICE(odyssey2_cartslot_device_getinfo)
SYSTEM_CONFIG_END

/*     YEAR  NAME      PARENT	COMPAT	MACHINE   INPUT     INIT      CONFIG    COMPANY     FULLNAME     FLAGS */
COMP( 1982, odyssey2, 0,		0,		odyssey2, odyssey2, odyssey2, odyssey2, "Magnavox", "Odyssey 2", GAME_NOT_WORKING | GAME_IMPERFECT_SOUND )
/* philips g7000/videopac */
