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

Burger Time hardware description:

Actually Lock'n'Chase is (C)1981 while Burger Time is (C)1982, so it might
be more accurate to say 'Lock'n'Chase hardware'.

The bootleg called Cook Race runs on hardware similar but different. The fact
that it addresses the program ROMs in the range 0500-3fff instead of the usual
c000-ffff makes me suspect that it is a bootleg of the *tape system* version.
Little is known about that system, but it is quite likely that it would have
RAM in the range 0000-3fff and load the program there from tape.


This hardware is pretty straightforward, but has a couple of interesting
twists. There are two ports to the video and color RAMs, one normal access,
and one with X and Y coordinates swapped. The sprite RAM occupies the
first row of the swapped area, so it appears in the regular video RAM as
the first column of on the left side.

These games don't have VBLANK interrupts, but instead an IRQ or NMI
(depending on the particular board) is generated when a coin is inserted.

Some of the games also have a background playfield which, in the
case of Bump 'n' Jump and Zoar, can be scrolled vertically.

These boards use two 8910's for sound, controlled by a dedicated 6502 (except
in Eggs, where the main processor handles the sound). The main processor
triggers an IRQ request when writing a command to the sound CPU.

Main clock: XTAL = 12 MHz
Horizontal video frequency: HSYNC = XTAL/768?? = 15.625 kHz ??
Video frequency: VSYNC = HSYNC/272 = 57.44 Hz ?
VBlank duration: 1/VSYNC * (24/272) = 1536 us ?


Note on Lock'n'Chase:

The watchdog test prints "WATCHDOG TEST ER". Just by looking at the code,
I can't see how it could print anything else, there is only one path it
can take. Should the game reset????

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

#include "driver.h"
#include "vidhrdw/generic.h"
#include "cpu/m6502/m6502.h"

extern unsigned char *lnc_charbank;
extern unsigned char *bnj_backgroundram;
extern int bnj_backgroundram_size;
extern unsigned char *zoar_scrollram;
extern unsigned char *deco_charram;

void btime_vh_convert_color_prom(unsigned char *palette, unsigned short *colortable,const unsigned char *color_prom);
void lnc_vh_convert_color_prom  (unsigned char *palette, unsigned short *colortable,const unsigned char *color_prom);

void lnc_init_machine (void);

int  btime_vh_start (void);
int  bnj_vh_start (void);

void bnj_vh_stop (void);

void btime_vh_screenrefresh   (struct osd_bitmap *bitmap,int full_refresh);
void cookrace_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);
void bnj_vh_screenrefresh     (struct osd_bitmap *bitmap,int full_refresh);
void lnc_vh_screenrefresh     (struct osd_bitmap *bitmap,int full_refresh);
void eggs_vh_screenrefresh    (struct osd_bitmap *bitmap,int full_refresh);
void zoar_vh_screenrefresh    (struct osd_bitmap *bitmap,int full_refresh);
void disco_vh_screenrefresh   (struct osd_bitmap *bitmap,int full_refresh);

void btime_paletteram_w(int offset,int data);
void bnj_background_w(int offset, int data);
void bnj_scroll1_w(int offset, int data);
void bnj_scroll2_w(int offset, int data);
int  btime_mirrorvideoram_r(int offset);
void btime_mirrorvideoram_w(int offset,int data);
int  btime_mirrorcolorram_r(int offset);
void btime_mirrorcolorram_w(int offset,int data);
void lnc_videoram_w(int offset,int data);
void lnc_mirrorvideoram_w(int offset,int data);
void deco_charram_w(int offset,int data);

void zoar_video_control_w (int offset,int data);
void btime_video_control_w(int offset,int data);
void bnj_video_control_w  (int offset,int data);
void lnc_video_control_w  (int offset,int data);
void disco_video_control_w(int offset,int data);

int lnc_sound_interrupt(void);

static void sound_command_w(int offset,int data);

int  mmonkey_protection_r(int offset);
void mmonkey_protection_w(int offset, int data);


INLINE int swap_bits_5_6(int data)
{
	return (data & 0x9f) | ((data & 0x20) << 1) | ((data & 0x40) >> 1);
}


static void btime_decrypt(void)
{
	int A,A1;
	extern unsigned char *RAM;


	/* the encryption is a simple bit rotation: 76543210 -> 65342710, but */
	/* with a catch: it is only applied if the previous instruction did a */
	/* memory write. Also, only opcodes at addresses with this bit pattern: */
	/* xxxx xxx1 xxxx x1xx are encrypted. */

	/* get the address of the next opcode */
	A = cpu_get_pc();

	/* however if the previous instruction was JSR (which caused a write to */
	/* the stack), fetch the address of the next instruction. */
	A1 = cpu_getpreviouspc();
	if (ROM[A1] == 0x20)	/* JSR $xxxx */
		A = cpu_readop_arg(A1+1) + 256 * cpu_readop_arg(A1+2);

	/* If the address of the next instruction is xxxx xxx1 xxxx x1xx, decode it. */
	if ((A & 0x0104) == 0x0104)
	{
		/* 76543210 -> 65342710 bit rotation */
		ROM[A] = (RAM[A] & 0x13) | ((RAM[A] & 0x80) >> 5) | ((RAM[A] & 0x64) << 1)
			   | ((RAM[A] & 0x08) << 2);
	}
}

static void lnc_w(int offset,int data)
{
	extern unsigned char *RAM;

	if      (offset <= 0x3bff)                       ;
	else if (offset >= 0x3c00 && offset <= 0x3fff) { lnc_videoram_w(offset - 0x3c00,data); return; }
	else if (offset >= 0x7c00 && offset <= 0x7fff) { lnc_mirrorvideoram_w(offset - 0x7c00,data); return; }
	else if (offset == 0x8000)                     { return; }  /* MWA_NOP */
	else if (offset == 0x8001)                     { lnc_video_control_w(0,data); return; }
	else if (offset == 0x8003)                       ;
	else if (offset == 0x9000)                     { return; }  /* MWA_NOP */
	else if (offset == 0x9002)                     { sound_command_w(0,data); return; }
	else if (offset >= 0xb000 && offset <= 0xb1ff)   ;
	else if (errorlog) fprintf(errorlog,"CPU #%d PC %04x: warning - write %02x to unmapped memory address %04x\n",cpu_getactivecpu(),cpu_get_pc(),data,offset);

	RAM[offset] = data;

	/* Swap bits 5 & 6 for opcodes */
	ROM[offset] = swap_bits_5_6(data);
}

static void mmonkey_w(int offset,int data)
{
	extern unsigned char *RAM;

	if      (offset <= 0x3bff)                       ;
	else if (offset >= 0x3c00 && offset <= 0x3fff) { lnc_videoram_w(offset - 0x3c00,data); return; }
	else if (offset >= 0x7c00 && offset <= 0x7fff) { lnc_mirrorvideoram_w(offset - 0x7c00,data); return; }
	else if (offset == 0x8001)                     { lnc_video_control_w(0,data); return; }
	else if (offset == 0x8003)                       ;
	else if (offset == 0x9000)                     { return; }  /* MWA_NOP */
	else if (offset == 0x9002)                     { sound_command_w(0,data); return; }
	else if (offset >= 0xb000 && offset <= 0xbfff) { mmonkey_protection_w(offset - 0xb000, data); return; }
	else if (errorlog) fprintf(errorlog,"CPU #%d PC %04x: warning - write %02x to unmapped memory address %04x\n",cpu_getactivecpu(),cpu_get_pc(),data,offset);

	RAM[offset] = data;

	/* Swap bits 5 & 6 for opcodes */
	ROM[offset] = swap_bits_5_6(data);
}

static void btime_w(int offset,int data)
{
	extern unsigned char *RAM;

	if      (offset <= 0x07ff)                     RAM[offset] = data;
	else if (offset >= 0x0c00 && offset <= 0x0c0f) btime_paletteram_w(offset - 0x0c00,data);
	else if (offset >= 0x1000 && offset <= 0x13ff) videoram_w(offset - 0x1000,data);
	else if (offset >= 0x1400 && offset <= 0x17ff) colorram_w(offset - 0x1400,data);
	else if (offset >= 0x1800 && offset <= 0x1bff) btime_mirrorvideoram_w(offset - 0x1800,data);
	else if (offset >= 0x1c00 && offset <= 0x1fff) btime_mirrorcolorram_w(offset - 0x1c00,data);
	else if (offset == 0x4002)                     btime_video_control_w(0,data);
	else if (offset == 0x4003)                     sound_command_w(0,data);
	else if (offset == 0x4004)                     bnj_scroll1_w(0,data);
	else if (errorlog) fprintf(errorlog,"CPU #%d PC %04x: warning - write %02x to unmapped memory address %04x\n",cpu_getactivecpu(),cpu_get_pc(),data,offset);

	btime_decrypt();
}

static void zoar_w(int offset,int data)
{
	extern unsigned char *RAM;

	if      (offset <= 0x07ff) 					   RAM[offset] = data;
	else if (offset >= 0x8000 && offset <= 0x83ff) videoram_w(offset - 0x8000,data);
	else if (offset >= 0x8400 && offset <= 0x87ff) colorram_w(offset - 0x8400,data);
	else if (offset >= 0x8800 && offset <= 0x8bff) btime_mirrorvideoram_w(offset - 0x8800,data);
	else if (offset >= 0x8c00 && offset <= 0x8fff) btime_mirrorcolorram_w(offset - 0x8c00,data);
	else if (offset == 0x9000)					   zoar_video_control_w(0, data);
	else if (offset >= 0x9800 && offset <= 0x9803) RAM[offset] = data;
	else if (offset == 0x9804)                     bnj_scroll2_w(0,data);
	else if (offset == 0x9805)                     bnj_scroll1_w(0,data);
	else if (offset == 0x9806)                     sound_command_w(0,data);
	else if (errorlog) fprintf(errorlog,"CPU #%d PC %04x: warning - write %02x to unmapped memory address %04x\n",cpu_getactivecpu(),cpu_get_pc(),data,offset);

	btime_decrypt();

}

static void disco_w(int offset,int data)
{
	extern unsigned char *RAM;

	if      (offset <= 0x04ff)                     RAM[offset] = data;
	else if (offset >= 0x2000 && offset <= 0x7fff) deco_charram_w(offset - 0x2000,data);
	else if (offset >= 0x8000 && offset <= 0x83ff) videoram_w(offset - 0x8000,data);
	else if (offset >= 0x8400 && offset <= 0x87ff) colorram_w(offset - 0x8400,data);
	else if (offset >= 0x8800 && offset <= 0x881f) RAM[offset] = data;
	else if (offset == 0x9a00)                     sound_command_w(0,data);
	else if (offset == 0x9c00)                     disco_video_control_w(0,data);
	else if (errorlog) fprintf(errorlog,"CPU #%d PC %04x: warning - write %02x to unmapped memory address %04x\n",cpu_getactivecpu(),cpu_get_pc(),data,offset);

	btime_decrypt();
}


static struct MemoryReadAddress btime_readmem[] =
{
	{ 0x0000, 0x07ff, MRA_RAM },
	{ 0x1000, 0x17ff, MRA_RAM },
	{ 0x1800, 0x1bff, btime_mirrorvideoram_r },
	{ 0x1c00, 0x1fff, btime_mirrorcolorram_r },
	{ 0x4000, 0x4000, input_port_0_r },     /* IN0 */
	{ 0x4001, 0x4001, input_port_1_r },     /* IN1 */
	{ 0x4002, 0x4002, input_port_2_r },     /* coin */
	{ 0x4003, 0x4003, input_port_3_r },     /* DSW1 */
	{ 0x4004, 0x4004, input_port_4_r },     /* DSW2 */
	{ 0xb000, 0xffff, MRA_ROM },
	{ -1 }  /* end of table */
};

static struct MemoryWriteAddress btime_writemem[] =
{
	{ 0x0000, 0xffff, btime_w },	    /* override the following entries to */
										/* support ROM decryption */
	{ 0x0000, 0x07ff, MWA_RAM },
	{ 0x0c00, 0x0c0f, btime_paletteram_w, &paletteram },
	{ 0x1000, 0x13ff, videoram_w, &videoram, &videoram_size },
	{ 0x1400, 0x17ff, colorram_w, &colorram },
	{ 0x1800, 0x1bff, btime_mirrorvideoram_w },
	{ 0x1c00, 0x1fff, btime_mirrorcolorram_w },
	{ 0x4000, 0x4000, MWA_NOP },
	{ 0x4002, 0x4002, btime_video_control_w },
	{ 0x4003, 0x4003, sound_command_w },
	{ 0x4004, 0x4004, bnj_scroll1_w },
	{ -1 }  /* end of table */
};

static struct MemoryReadAddress cookrace_readmem[] =
{
	{ 0x0000, 0x03ff, MRA_RAM },
	{ 0x0500, 0x3fff, MRA_ROM },
	{ 0xc000, 0xc7ff, MRA_RAM },
	{ 0xc800, 0xcbff, btime_mirrorvideoram_r },
	{ 0xcc00, 0xcfff, btime_mirrorcolorram_r },
	{ 0xd000, 0xd0ff, MRA_RAM },	/* background */
	{ 0xd100, 0xd3ff, MRA_RAM },	/* ? */
	{ 0xd400, 0xd7ff, MRA_RAM },	/* background? */
	{ 0xe000, 0xe000, input_port_3_r },     /* DSW1 */
	{ 0xe300, 0xe300, input_port_3_r },     /* mirror address used on high score name enter */
											/* screen */
	{ 0xe001, 0xe001, input_port_4_r },     /* DSW2 */
	{ 0xe002, 0xe002, input_port_0_r },     /* IN0 */
	{ 0xe003, 0xe003, input_port_1_r },     /* IN1 */
	{ 0xe004, 0xe004, input_port_2_r },     /* coin */
	{ 0xfff9, 0xffff, MRA_ROM },
	{ -1 }  /* end of table */
};

static struct MemoryWriteAddress cookrace_writemem[] =
{
	{ 0x0000, 0x03ff, MWA_RAM },
	{ 0x0500, 0x3fff, MWA_ROM },
	{ 0xc000, 0xc3ff, videoram_w, &videoram, &videoram_size },
	{ 0xc400, 0xc7ff, colorram_w, &colorram },
	{ 0xc800, 0xcbff, btime_mirrorvideoram_w },
	{ 0xcc00, 0xcfff, btime_mirrorcolorram_w },
	{ 0xd000, 0xd0ff, MWA_RAM },	/* background? */
	{ 0xd100, 0xd3ff, MWA_RAM },	/* ? */
	{ 0xd400, 0xd7ff, MWA_RAM, &bnj_backgroundram, &bnj_backgroundram_size },
	{ 0xe000, 0xe000, bnj_video_control_w },
	{ 0xe001, 0xe001, sound_command_w },
#if 0
	{ 0x4004, 0x4004, bnj_scroll1_w },
#endif
	{ 0xfff9, 0xffff, MWA_ROM },
	{ -1 }  /* end of table */
};

static struct MemoryReadAddress zoar_readmem[] =
{
	{ 0x0000, 0x07ff, MRA_RAM },
	{ 0x9800, 0x9800, input_port_3_r },     /* DSW 1 */
	{ 0x9801, 0x9801, input_port_4_r },     /* DSW 2 */
	{ 0x9802, 0x9802, input_port_0_r },     /* IN 0 */
	{ 0x9803, 0x9803, input_port_1_r },     /* IN 1 */
	{ 0x9804, 0x9804, input_port_2_r },     /* coin */
	{ 0xd000, 0xffff, MRA_ROM },
	{ -1 }  /* end of table */
};

static struct MemoryWriteAddress zoar_writemem[] =
{
	{ 0x0000, 0xffff, zoar_w },	    /* override the following entries to */
									/* support ROM decryption */
	{ 0x0000, 0x07ff, MWA_RAM },
	{ 0x8000, 0x83ff, videoram_w, &videoram, &videoram_size },
	{ 0x8400, 0x87ff, colorram_w, &colorram },
	{ 0x8800, 0x8bff, btime_mirrorvideoram_w },
	{ 0x8c00, 0x8fff, btime_mirrorcolorram_w },
	{ 0x9000, 0x9000, zoar_video_control_w },
	{ 0x9800, 0x9803, MWA_RAM, &zoar_scrollram },
	{ 0x9805, 0x9805, bnj_scroll2_w },
	{ 0x9805, 0x9805, bnj_scroll1_w },
	{ 0x9806, 0x9806, sound_command_w },
  /*{ 0x9807, 0x9807, MWA_RAM }, */ /* Marked as ACK on schematics (Board 2 Pg 5) */
	{ -1 }  /* end of table */
};

static struct MemoryReadAddress eggs_readmem[] =
{
	{ 0x0000, 0x07ff, MRA_RAM },
	{ 0x1000, 0x17ff, MRA_RAM },
	{ 0x1800, 0x1bff, btime_mirrorvideoram_r },
	{ 0x1c00, 0x1fff, btime_mirrorcolorram_r },
	{ 0x2000, 0x2000, input_port_2_r },     /* DSW1 */
	{ 0x2001, 0x2001, input_port_3_r },     /* DSW2 */
	{ 0x2002, 0x2002, input_port_0_r },     /* IN0 */
	{ 0x2003, 0x2003, input_port_1_r },     /* IN1 */
	{ 0x3000, 0x7fff, MRA_ROM },
	{ 0xf000, 0xffff, MRA_ROM },    /* reset/interrupt vectors */
	{ -1 }  /* end of table */
};

static struct MemoryWriteAddress eggs_writemem[] =
{
	{ 0x0000, 0x07ff, MWA_RAM },
	{ 0x1000, 0x13ff, videoram_w, &videoram, &videoram_size },
	{ 0x1400, 0x17ff, colorram_w, &colorram },
	{ 0x1800, 0x1bff, btime_mirrorvideoram_w },
	{ 0x1c00, 0x1fff, btime_mirrorcolorram_w },
	{ 0x2000, 0x2000, btime_video_control_w },
	{ 0x2001, 0x2001, MWA_NOP },
	{ 0x2004, 0x2004, AY8910_control_port_0_w },
	{ 0x2005, 0x2005, AY8910_write_port_0_w },
	{ 0x2006, 0x2006, AY8910_control_port_1_w },
	{ 0x2007, 0x2007, AY8910_write_port_1_w },
	{ 0x3000, 0x7fff, MWA_ROM },
	{ -1 }  /* end of table */
};


static struct MemoryReadAddress lnc_readmem[] =
{
	{ 0x0000, 0x3fff, MRA_RAM },
	{ 0x7c00, 0x7fff, btime_mirrorvideoram_r },
	{ 0x8000, 0x8000, input_port_3_r },     /* DSW1 */
	{ 0x8001, 0x8001, input_port_4_r },     /* DSW2 */
	{ 0x9000, 0x9000, input_port_0_r },     /* IN0 */
	{ 0x9001, 0x9001, input_port_1_r },     /* IN1 */
	{ 0x9002, 0x9002, input_port_2_r },     /* coin */
	{ 0xb000, 0xb1ff, MRA_RAM },
	{ 0xc000, 0xffff, MRA_ROM },
	{ -1 }  /* end of table */
};

static struct MemoryWriteAddress lnc_writemem[] =
{
	{ 0x0000, 0xffff, lnc_w },      /* override the following entries to */
									/* support ROM decryption */
	{ 0x0000, 0x3bff, MWA_RAM },
	{ 0x3c00, 0x3fff, lnc_videoram_w, &videoram, &videoram_size },
	{ 0x7800, 0x7bff, colorram_w, &colorram },  /* this is just here to initialize the pointer */
	{ 0x7c00, 0x7fff, lnc_mirrorvideoram_w },
	{ 0x8000, 0x8000, MWA_NOP },            /* ??? */
	{ 0x8001, 0x8001, lnc_video_control_w },
	{ 0x8003, 0x8003, MWA_RAM, &lnc_charbank },
	{ 0x9000, 0x9000, MWA_NOP },            /* IRQ ACK ??? */
	{ 0x9002, 0x9002, sound_command_w },
	{ 0xb000, 0xb1ff, MWA_RAM },
	{ -1 }  /* end of table */
};


static struct MemoryReadAddress mmonkey_readmem[] =
{
	{ 0x0000, 0x3fff, MRA_RAM },
	{ 0x7c00, 0x7fff, btime_mirrorvideoram_r },
	{ 0x8000, 0x8000, input_port_3_r },     /* DSW1 */
	{ 0x8001, 0x8001, input_port_4_r },     /* DSW2 */
	{ 0x9000, 0x9000, input_port_0_r },     /* IN0 */
	{ 0x9001, 0x9001, input_port_1_r },     /* IN1 */
	{ 0x9002, 0x9002, input_port_2_r },     /* coin */
	{ 0xb000, 0xbfff, mmonkey_protection_r },
	{ 0xc000, 0xffff, MRA_ROM },
	{ -1 }  /* end of table */
};

static struct MemoryWriteAddress mmonkey_writemem[] =
{
	{ 0x0000, 0xffff, mmonkey_w },  /* override the following entries to */
									/* support ROM decryption */
	{ 0x0000, 0x3bff, MWA_RAM },
	{ 0x3c00, 0x3fff, lnc_videoram_w, &videoram, &videoram_size },
	{ 0x7800, 0x7bff, colorram_w, &colorram },  /* this is just here to initialize the pointer */
	{ 0x7c00, 0x7fff, lnc_mirrorvideoram_w },
	{ 0x8001, 0x8001, lnc_video_control_w },
	{ 0x8003, 0x8003, MWA_RAM, &lnc_charbank },
	{ 0x9000, 0x9000, MWA_NOP },            /* IRQ ACK ??? */
	{ 0x9002, 0x9002, sound_command_w },
	{ 0xb000, 0xbfff, mmonkey_protection_w },
	{ -1 }  /* end of table */
};


static struct MemoryReadAddress bnj_readmem[] =
{
	{ 0x0000, 0x07ff, MRA_RAM },
	{ 0x1000, 0x1000, input_port_3_r },     /* DSW1 */
	{ 0x1001, 0x1001, input_port_4_r },     /* DSW2 */
	{ 0x1002, 0x1002, input_port_0_r },     /* IN0 */
	{ 0x1003, 0x1003, input_port_1_r },     /* IN1 */
	{ 0x1004, 0x1004, input_port_2_r },     /* coin */
	{ 0x4000, 0x47ff, MRA_RAM },
	{ 0x4800, 0x4bff, btime_mirrorvideoram_r },
	{ 0x4c00, 0x4fff, btime_mirrorcolorram_r },
	{ 0xa000, 0xffff, MRA_ROM },
	{ -1 }  /* end of table */
};

static struct MemoryWriteAddress bnj_writemem[] =
{
	{ 0x0000, 0x07ff, MWA_RAM },
	{ 0x1001, 0x1001, bnj_video_control_w },
	{ 0x1002, 0x1002, sound_command_w },
	{ 0x4000, 0x43ff, videoram_w, &videoram, &videoram_size },
	{ 0x4400, 0x47ff, colorram_w, &colorram },
	{ 0x4800, 0x4bff, btime_mirrorvideoram_w },
	{ 0x4c00, 0x4fff, btime_mirrorcolorram_w },
	{ 0x5000, 0x51ff, bnj_background_w, &bnj_backgroundram, &bnj_backgroundram_size },
	{ 0x5400, 0x5400, bnj_scroll1_w },
	{ 0x5800, 0x5800, bnj_scroll2_w },
	{ 0x5c00, 0x5c0f, btime_paletteram_w, &paletteram },
	{ -1 }  /* end of table */
};

static struct MemoryReadAddress disco_readmem[] =
{
	{ 0x0000, 0x04ff, MRA_RAM },
	{ 0x2000, 0x881f, MRA_RAM },
	{ 0x9000, 0x9000, input_port_2_r },     /* coin */
	{ 0x9200, 0x9200, input_port_0_r },     /* IN0 */
	{ 0x9400, 0x9400, input_port_1_r },     /* IN1 */
	{ 0x9800, 0x9800, input_port_3_r },     /* DSW1 */
	{ 0x9a00, 0x9a00, input_port_4_r },     /* DSW2 */
	{ 0x9c00, 0x9c00, input_port_5_r },     /* VBLANK */
	{ 0xa000, 0xffff, MRA_ROM },
	{ -1 }  /* end of table */
};

static struct MemoryWriteAddress disco_writemem[] =
{
	{ 0x0000, 0xffff, disco_w },    /* override the following entries to */
									/* support ROM decryption */
	{ 0x2000, 0x7fff, deco_charram_w, &deco_charram },
	{ 0x8000, 0x83ff, videoram_w, &videoram, &videoram_size },
	{ 0x8400, 0x87ff, colorram_w, &colorram },
	{ 0x8800, 0x881f, MWA_RAM, &spriteram, &spriteram_size },
	{ 0x9a00, 0x9a00, sound_command_w },
	{ 0x9c00, 0x9c00, disco_video_control_w },
	{ -1 }  /* end of table */
};


static struct MemoryReadAddress sound_readmem[] =
{
	{ 0x0000, 0x03ff, MRA_RAM },
	{ 0x0200, 0x0fff, MRA_ROM },	/* Cook Race */
	{ 0xa000, 0xafff, soundlatch_r },
	{ 0xf000, 0xffff, MRA_ROM },
	{ -1 }  /* end of table */
};

static struct MemoryWriteAddress sound_writemem[] =
{
	{ 0x0000, 0x03ff, MWA_RAM },
	{ 0x0200, 0x0fff, MWA_ROM },	/* Cook Race */
	{ 0x2000, 0x2fff, AY8910_write_port_0_w },
	{ 0x4000, 0x4fff, AY8910_control_port_0_w },
	{ 0x6000, 0x6fff, AY8910_write_port_1_w },
	{ 0x8000, 0x8fff, AY8910_control_port_1_w },
	{ 0xc000, 0xcfff, interrupt_enable_w },
	{ 0xf000, 0xffff, MWA_ROM },
	{ -1 }  /* end of table */
};


static struct MemoryReadAddress disco_sound_readmem[] =
{
	{ 0x0000, 0x03ff, MRA_RAM },
	{ 0x8000, 0x8fff, soundlatch_r },
	{ 0xf000, 0xffff, MRA_ROM },
	{ -1 }  /* end of table */
};

static struct MemoryWriteAddress disco_sound_writemem[] =
{
	{ 0x0000, 0x03ff, MWA_RAM },
	{ 0x4000, 0x4fff, AY8910_write_port_0_w },
	{ 0x5000, 0x5fff, AY8910_control_port_0_w },
	{ 0x6000, 0x6fff, AY8910_write_port_1_w },
	{ 0x7000, 0x7fff, AY8910_control_port_1_w },
	{ 0x8000, 0x8fff, MWA_NOP },  /* ACK ? */
	{ 0xf000, 0xffff, MWA_ROM },
	{ -1 }  /* end of table */
};


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

These games don't have VBlank interrupts.
Interrupts are still used by the game, coin insertion generates an IRQ.

***************************************************************************/
static int btime_interrupt(int(*generated_interrupt)(void), int active_high)
{
	static int coin;
	int port;

	port = readinputport(2) & 0xc0;
	if (active_high) port ^= 0xc0;

	if (port != 0xc0)    /* Coin */
	{
		if (coin == 0)
		{
			coin = 1;
			return generated_interrupt();
		}
	}
	else coin = 0;

	return ignore_interrupt();
}

static int btime_irq_interrupt(void)
{
	return btime_interrupt(interrupt, 1);
}

static int zoar_irq_interrupt(void)
{
	return btime_interrupt(interrupt, 0);
}

static int btime_nmi_interrupt(void)
{
	return btime_interrupt(nmi_interrupt, 0);
}

static void sound_command_w(int offset,int data)
{
	soundlatch_w(offset,data);
	cpu_cause_interrupt(1,M6502_INT_IRQ);
}


INPUT_PORTS_START( btime_input_ports )
	PORT_START      /* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START      /* IN1 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START      /* IN2 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_TILT )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x40, IP_ACTIVE_HIGH,IPT_COIN1 )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH,IPT_COIN2 )

	PORT_START      /* DSW1 */
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x0c, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 1C_3C ) )
	PORT_SERVICE( 0x10, IP_ACTIVE_LOW )
	PORT_DIPNAME( 0x20, 0x20, "Cross Hatch Pattern" )
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Cocktail ) )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_VBLANK  )

	PORT_START      /* DSW2 */
	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x01, "3" )
	PORT_DIPSETTING(    0x00, "5" )
	PORT_DIPNAME( 0x06, 0x06, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x06, "10000" )
	PORT_DIPSETTING(    0x04, "15000" )
	PORT_DIPSETTING(    0x02, "20000"  )
	PORT_DIPSETTING(    0x00, "30000"  )
	PORT_DIPNAME( 0x08, 0x08, "Enemies" )
	PORT_DIPSETTING(    0x08, "4" )
	PORT_DIPSETTING(    0x00, "6" )
	PORT_DIPNAME( 0x10, 0x10, "End of Level Pepper" )
	PORT_DIPSETTING(    0x10, DEF_STR( No ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x20, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x40, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x80, DEF_STR( On ) )
INPUT_PORTS_END

INPUT_PORTS_START( cookrace_input_ports )
	PORT_START      /* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH,IPT_JOYSTICK_RIGHT | IPF_4WAY )
	PORT_BIT( 0x02, IP_ACTIVE_HIGH,IPT_JOYSTICK_LEFT | IPF_4WAY )
	PORT_BIT( 0x04, IP_ACTIVE_HIGH,IPT_JOYSTICK_UP | IPF_4WAY )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH,IPT_JOYSTICK_DOWN | IPF_4WAY )
	PORT_BIT( 0x10, IP_ACTIVE_HIGH,IPT_BUTTON1 )
	PORT_BIT( 0x20, IP_ACTIVE_HIGH,IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_HIGH,IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH,IPT_UNUSED )

	PORT_START      /* IN1 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH,IPT_JOYSTICK_RIGHT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x02, IP_ACTIVE_HIGH,IPT_JOYSTICK_LEFT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x04, IP_ACTIVE_HIGH,IPT_JOYSTICK_UP | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH,IPT_JOYSTICK_DOWN | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x10, IP_ACTIVE_HIGH,IPT_BUTTON1 | IPF_COCKTAIL )
	PORT_BIT( 0x20, IP_ACTIVE_HIGH,IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_HIGH,IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH,IPT_UNUSED )

	PORT_START      /* IN2 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH,IPT_UNKNOWN )
	PORT_BIT( 0x02, IP_ACTIVE_HIGH,IPT_UNKNOWN )
	PORT_BIT( 0x04, IP_ACTIVE_HIGH,IPT_UNKNOWN )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH,IPT_START1 )
	PORT_BIT( 0x10, IP_ACTIVE_HIGH,IPT_START2 )
	PORT_BIT( 0x20, IP_ACTIVE_HIGH,IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 )

	PORT_START      /* DSW1 */
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x0c, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x10, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x20, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Cocktail ) )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_VBLANK  )

	PORT_START      /* DSW2 */
	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x01, "3" )
	PORT_DIPSETTING(    0x00, "5" )
	PORT_DIPNAME( 0x06, 0x06, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x06, "20000" )
	PORT_DIPSETTING(    0x04, "30000" )
	PORT_DIPSETTING(    0x02, "40000"  )
	PORT_DIPSETTING(    0x00, "50000"  )
	PORT_DIPNAME( 0x08, 0x08, "Enemies" )
	PORT_DIPSETTING(    0x08, "4" )
	PORT_DIPSETTING(    0x00, "6" )
	PORT_DIPNAME( 0x10, 0x10, "End of Level Pepper" )
	PORT_DIPSETTING(    0x10, DEF_STR( No ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x20, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x40, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x80, DEF_STR( On ) )
INPUT_PORTS_END

INPUT_PORTS_START( zoar_input_ports )
	PORT_START      /* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 )
	PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START      /* IN1 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_COCKTAIL )
	PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START      /* IN2 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON3 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON3 | IPF_COCKTAIL )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN2 )

	PORT_START      /* DSW1 */
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x0c, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x10, 0x00, DEF_STR( Unknown ) )    /* almost certainly unused */
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x10, DEF_STR( On ) )
	/* Service mode doesn't work because of missing ROMs */
	PORT_SERVICE( 0x20, IP_ACTIVE_LOW )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Cocktail ) )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_VBLANK  )

	PORT_START      /* DSW2 */
	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x01, "3" )
	PORT_DIPSETTING(    0x00, "5" )
	PORT_DIPNAME( 0x06, 0x06, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x06, "5000" )
	PORT_DIPSETTING(    0x04, "10000" )
	PORT_DIPSETTING(    0x02, "15000"  )
	PORT_DIPSETTING(    0x00, "20000"  )
	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(    0x08, "Easy" )
	PORT_DIPSETTING(    0x00, "Hard" )
	PORT_DIPNAME( 0x10, 0x00, "Weapon Select" )
	PORT_DIPSETTING(    0x00, "Manual" )
	PORT_DIPSETTING(    0x10, "Auto" )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) )    /* These 3 switches     */
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )        /* have to do with      */
	PORT_DIPSETTING(    0x20, DEF_STR( On ) )         /* coinage.             */
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Unknown ) )    /* See code at $d234.   */
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )        /* Feel free to figure  */
	PORT_DIPSETTING(    0x40, DEF_STR( On ) )         /* them out.            */
	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x80, DEF_STR( On ) )
INPUT_PORTS_END

INPUT_PORTS_START( eggs_input_ports )
	PORT_START      /* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN2 )

	PORT_START      /* IN1 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START2 )

	PORT_START      /* DSW1 */
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x0c, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 1C_3C ) )
	PORT_BIT( 0x30, 0x30, IPT_UNKNOWN )     /* almost certainly unused */
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Cocktail ) )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_VBLANK  )

	PORT_START      /* DSW2 */
	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x01, "3" )
	PORT_DIPSETTING(    0x00, "5" )
	PORT_DIPNAME( 0x06, 0x04, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x04, "30000" )
	PORT_DIPSETTING(    0x02, "50000" )
	PORT_DIPSETTING(    0x00, "70000"  )
	PORT_DIPSETTING(    0x06, "Never"  )
	PORT_DIPNAME( 0x08, 0x00, DEF_STR( Unknown ) )   /* almost certainly unused */
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x08, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x00, DEF_STR( Unknown ) )   /* almost certainly unused */
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x10, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) )   /* almost certainly unused */
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x20, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Unknown ) )   /* almost certainly unused */
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x40, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x80, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(    0x80, "Easy" )
	PORT_DIPSETTING(    0x00, "Hard" )
INPUT_PORTS_END

INPUT_PORTS_START( lnc_input_ports )
	PORT_START      /* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNKNOWN )

	PORT_START      /* IN1 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL )
	PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNKNOWN )

	PORT_START      /* IN2 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN2 )

	PORT_START      /* DSW1 */
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x0c, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x30, 0x30, "Test Mode" )
	PORT_DIPSETTING(    0x30, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, "RAM Test Only" )
	PORT_DIPSETTING(    0x20, "Watchdog Test Only" )
	PORT_DIPSETTING(    0x10, "All Tests" )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Cocktail ) )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_VBLANK  )

	PORT_START      /* DSW2 */
	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x01, "3" )
	PORT_DIPSETTING(    0x00, "5" )
	PORT_DIPNAME( 0x06, 0x06, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x06, "15000" )
	PORT_DIPSETTING(    0x04, "20000" )
	PORT_DIPSETTING(    0x02, "30000" )
	PORT_DIPSETTING(    0x00, "Never" )
	PORT_DIPNAME( 0x08, 0x08, "Game Speed" )
	PORT_DIPSETTING(    0x08, "Slow" )
	PORT_DIPSETTING(    0x00, "Hard" )
	PORT_DIPNAME( 0x10, 0x00, DEF_STR( Unused ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x10, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unused ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x20, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Unused ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x40, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Unused ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x80, DEF_STR( On ) )
INPUT_PORTS_END

INPUT_PORTS_START( wtennis_input_ports )
	PORT_START      /* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNKNOWN )

	PORT_START      /* IN1 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL )
	PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNKNOWN )

	PORT_START      /* IN2 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN2 )

	PORT_START      /* DSW1 */
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x0c, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x10, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x10, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x20, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Cocktail ) )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_VBLANK  )

	PORT_START      /* DSW2 */
	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x01, "2" )
	PORT_DIPSETTING(    0x00, "3" )
	PORT_DIPNAME( 0x06, 0x06, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x06, "10000" )
	PORT_DIPSETTING(    0x04, "20000" )
	PORT_DIPSETTING(    0x02, "30000" )
	PORT_DIPSETTING(    0x00, "Never" )
	PORT_DIPNAME( 0x08, 0x00, DEF_STR( Unknown ) )   /* definately used */
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x08, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x00, DEF_STR( Unused ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x10, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) )    /* These 3 switches     */
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )        /* have to do with      */
	PORT_DIPSETTING(    0x20, DEF_STR( On ) )         /* coinage.             */
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x40, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x80, DEF_STR( On ) )
INPUT_PORTS_END

INPUT_PORTS_START( mmonkey_input_ports )
	PORT_START      /* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNKNOWN )

	PORT_START      /* IN1 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL )
	PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNKNOWN )

	PORT_START      /* IN2 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN2 )

	PORT_START      /* DSW1 */
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x0c, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x10, 0x10, DEF_STR( Free_Play ) )
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unused ) )   /* almost certainly unused */
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x20, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Cocktail ) )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_VBLANK  )

	PORT_START      /* DSW2 */
	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x01, "3" )
	PORT_DIPSETTING(    0x00, "5" )
	PORT_DIPNAME( 0x06, 0x00, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x06, "Never" )
	PORT_DIPSETTING(    0x02, "Every 15000" )
	PORT_DIPSETTING(    0x00, "20000" )
	PORT_DIPSETTING(    0x04, "Every 30000" )
	PORT_DIPNAME( 0x18, 0x08, DEF_STR( Difficulty ) )
	PORT_BITX( 0,       0x00, IPT_DIPSWITCH_SETTING | IPF_CHEAT, "Level Skip Mode", IP_KEY_NONE, IP_JOY_NONE )
	PORT_DIPSETTING(    0x18, "Easy" )
	PORT_DIPSETTING(    0x08, "Medium" )
	PORT_DIPSETTING(    0x10, "Hard" )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unused ) )   /* almost certainly unused */
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x20, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Unused ) )   /* almost certainly unused */
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x40, DEF_STR( On ) )
	PORT_SERVICE( 0x80, IP_ACTIVE_LOW )
INPUT_PORTS_END

INPUT_PORTS_START( bnj_input_ports )
	PORT_START      /* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START      /* IN1 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START      /* IN2 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_TILT )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN2 )

	PORT_START      /* DSW1 */
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x0c, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 1C_3C ) )
	PORT_SERVICE( 0x10, IP_ACTIVE_LOW )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x20, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Cocktail ) )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_VBLANK  )

	PORT_START      /* DSW2 */
	PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x01, "3" )
	PORT_DIPSETTING(    0x00, "5" )
	PORT_DIPNAME( 0x06, 0x06, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x06, "Every 30000" )
	PORT_DIPSETTING(    0x04, "Every 70000" )
	PORT_DIPSETTING(    0x02, "20000 Only"  )
	PORT_DIPSETTING(    0x00, "30000 Only"  )
	PORT_DIPNAME( 0x08, 0x00, "Allow Continue" )
	PORT_DIPSETTING(    0x08, DEF_STR( No ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x10, 0x10, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(    0x10, "Easy" )
	PORT_DIPSETTING(    0x00, "Hard" )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x20, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x40, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x80, DEF_STR( On ) )
INPUT_PORTS_END

INPUT_PORTS_START( disco_input_ports )
	PORT_START      /* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT | IPF_4WAY )
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT | IPF_4WAY )
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP | IPF_4WAY )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN | IPF_4WAY )
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 )
	PORT_BIT( 0x60, IP_ACTIVE_HIGH, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_START1 )

	PORT_START      /* IN1 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 | IPF_COCKTAIL )
	PORT_BIT( 0x60, IP_ACTIVE_HIGH, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_START2 )

	PORT_START      /* IN2 */
	PORT_BIT( 0x1f, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x40, IP_ACTIVE_HIGH,IPT_COIN1 )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH,IPT_COIN2 )

	PORT_START      /* DSW1 */
	PORT_DIPNAME( 0x03, 0x00, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x0c, 0x00, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(    0x0c, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x10, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x10, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x20, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x40, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Cocktail ) )
	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x80, DEF_STR( On ) )

	PORT_START      /* DSW2 */
	PORT_DIPNAME( 0x01, 0x00, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x00, "3" )
	PORT_DIPSETTING(    0x01, "5" )
	PORT_DIPNAME( 0x06, 0x00, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x00, "10000" )
	PORT_DIPSETTING(    0x02, "20000" )
	PORT_DIPSETTING(    0x04, "30000" )
	PORT_DIPSETTING(    0x06, "Never" )
	PORT_DIPNAME( 0x08, 0x00, "Music Weapons" )
	PORT_DIPSETTING(    0x00, "5" )
	PORT_DIPSETTING(    0x08, "8" )
	PORT_DIPNAME( 0x10, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x10, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x20, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x40, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x80, DEF_STR( On ) )

	PORT_START      /* VBLANK */
	PORT_BIT( 0x7f, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_VBLANK )
INPUT_PORTS_END


static struct GfxLayout charlayout =
{
	8,8,    /* 8*8 characters */
	1024,   /* 1024 characters */
	3,      /* 3 bits per pixel */
	{ 2*1024*8*8, 1024*8*8, 0 },    /* the bitplanes are separated */
	{ 0, 1, 2, 3, 4, 5, 6, 7 },
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
	8*8     /* every char takes 8 consecutive bytes */
};

static struct GfxLayout spritelayout =
{
	16,16,  /* 16*16 sprites */
	256,    /* 256 sprites */
	3,      /* 3 bits per pixel */
	{ 2*256*16*16, 256*16*16, 0 },  /* the bitplanes are separated */
	{ 16*8+0, 16*8+1, 16*8+2, 16*8+3, 16*8+4, 16*8+5, 16*8+6, 16*8+7,
	  0, 1, 2, 3, 4, 5, 6, 7 },
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8,
	  8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 },
	32*8    /* every sprite takes 32 consecutive bytes */
};

static struct GfxLayout zoar_spritelayout =
{
	16,16,  /* 16*16 sprites */
	128,    /* 256 sprites */
	3,      /* 3 bits per pixel */
	{ 2*128*16*16, 128*16*16, 0 },  /* the bitplanes are separated */
	{ 16*8+0, 16*8+1, 16*8+2, 16*8+3, 16*8+4, 16*8+5, 16*8+6, 16*8+7,
	  0, 1, 2, 3, 4, 5, 6, 7 },
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8,
	  8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 },
	32*8    /* every sprite takes 32 consecutive bytes */
};

static struct GfxLayout btime_tilelayout =
{
	16,16,  /* 16*16 characters */
	64,    /* 64 characters */
	3,      /* 3 bits per pixel */
	{  2*64*16*16, 64*16*16, 0 },    /* the bitplanes are separated */
	{ 16*8+0, 16*8+1, 16*8+2, 16*8+3, 16*8+4, 16*8+5, 16*8+6, 16*8+7,
	  0, 1, 2, 3, 4, 5, 6, 7 },
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8,
	  8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 },
	32*8    /* every tile takes 32 consecutive bytes */
};

static struct GfxLayout cookrace_tilelayout =
{
	8,8,  /* 8*8 characters */
	256,    /* 256 characters */
	3,      /* 3 bits per pixel */
	{  2*256*8*8, 256*8*8, 0 },    /* the bitplanes are separated */
	{ 0, 1, 2, 3, 4, 5, 6, 7 },
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
	8*8    /* every tile takes 8 consecutive bytes */
};

static struct GfxLayout bnj_tilelayout =
{
	16,16,  /* 16*16 characters */
	64, /* 64 characters */
	3,  /* 3 bits per pixel */
	{ 2*64*16*16+4, 0, 4 },
	{ 3*16*8+0, 3*16*8+1, 3*16*8+2, 3*16*8+3, 2*16*8+0, 2*16*8+1, 2*16*8+2, 2*16*8+3,
	  16*8+0, 16*8+1, 16*8+2, 16*8+3, 0, 1, 2, 3 },
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8,
	  8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 },
	64*8    /* every tile takes 64 consecutive bytes */
};

static struct GfxDecodeInfo btime_gfxdecodeinfo[] =
{
	{ 1, 0x0000, &charlayout,          0, 1 }, /* char set #1 */
	{ 1, 0x0000, &spritelayout,        0, 1 }, /* sprites */
	{ 1, 0x6000, &btime_tilelayout,    8, 1 }, /* background tiles */
	{ -1 } /* end of array */
};

static struct GfxDecodeInfo cookrace_gfxdecodeinfo[] =
{
	{ 1, 0x0000, &charlayout,          0, 1 }, /* char set #1 */
	{ 1, 0x0000, &spritelayout,        0, 1 }, /* sprites */
	{ 1, 0x6000, &cookrace_tilelayout, 8, 1 }, /* background tiles */
	{ -1 } /* end of array */
};

static struct GfxDecodeInfo lnc_gfxdecodeinfo[] =
{
	{ 1, 0x0000, &charlayout,          0, 1 },     /* char set #1 */
	{ 1, 0x0000, &spritelayout,        0, 1 },     /* sprites */
	{ -1 } /* end of array */
};

static struct GfxDecodeInfo bnj_gfxdecodeinfo[] =
{
	{ 1, 0x0000, &charlayout,          0, 1 }, /* char set #1 */
	{ 1, 0x0000, &spritelayout,        0, 1 }, /* sprites */
	{ 1, 0x6000, &bnj_tilelayout,      8, 1 }, /* background tiles */
	{ -1 } /* end of array */
};

static struct GfxDecodeInfo zoar_gfxdecodeinfo[] =
{
	{ 1, 0x0000, &charlayout,          0, 8 }, /* char set #1 */
	{ 1, 0x7800, &zoar_spritelayout,   0, 8 }, /* sprites */
	{ 1, 0x6000, &btime_tilelayout,    0, 8 }, /* background tiles */
	{ -1 } /* end of array */
};

static struct GfxDecodeInfo disco_gfxdecodeinfo[] =
{
	{ 0, 0x2000, &charlayout,          0, 4 }, /* char set #1 */
	{ 0, 0x2000, &spritelayout,        0, 4 }, /* sprites */
	{ -1 } /* end of array */
};

static struct AY8910interface ay8910_interface =
{
	2,      /* 2 chips */
	1500000,        /* 1.5 MHz ? (hand tuned) */
	{ 23, 23 },
	AY8910_DEFAULT_GAIN,
	{ 0 },
	{ 0 },
	{ 0 },
	{ 0 }
};

/********************************************************************
*
*  Machine Driver macro
*  ====================
*
*  Abusing the pre-processor.
*
********************************************************************/

#define cookrace_vh_convert_color_prom   btime_vh_convert_color_prom
#define bnj_vh_convert_color_prom        0
#define eggs_vh_convert_color_prom       btime_vh_convert_color_prom
#define wtennis_vh_convert_color_prom    lnc_vh_convert_color_prom
#define mmonkey_vh_convert_color_prom    lnc_vh_convert_color_prom
#define zoar_vh_convert_color_prom       btime_vh_convert_color_prom
#define disco_vh_convert_color_prom      btime_vh_convert_color_prom

#define wtennis_vh_screenrefresh	eggs_vh_screenrefresh
#define mmonkey_vh_screenrefresh	eggs_vh_screenrefresh

#define wtennis_readmem			lnc_readmem

#define wtennis_writemem		lnc_writemem

#define btime_sound_readmem		sound_readmem
#define cookrace_sound_readmem	sound_readmem
#define eggs_sound_readmem		sound_readmem
#define lnc_sound_readmem		sound_readmem
#define wtennis_sound_readmem	sound_readmem
#define mmonkey_sound_readmem	sound_readmem
#define bnj_sound_readmem		sound_readmem
#define zoar_sound_readmem		sound_readmem

#define btime_sound_writemem	sound_writemem
#define cookrace_sound_writemem	sound_writemem
#define eggs_sound_writemem		sound_writemem
#define lnc_sound_writemem		sound_writemem
#define wtennis_sound_writemem	sound_writemem
#define mmonkey_sound_writemem	sound_writemem
#define bnj_sound_writemem		sound_writemem
#define zoar_sound_writemem		sound_writemem

#define btime_init_machine     0
#define cookrace_init_machine  0
#define bnj_init_machine       0
#define wtennis_init_machine   lnc_init_machine
#define mmonkey_init_machine   lnc_init_machine
#define zoar_init_machine      0
#define disco_init_machine     0

#define cookrace_vh_start  btime_vh_start
#define zoar_vh_start      btime_vh_start
#define eggs_vh_start      btime_vh_start
#define lnc_vh_start       btime_vh_start
#define wtennis_vh_start   btime_vh_start
#define mmonkey_vh_start   btime_vh_start
#define disco_vh_start     btime_vh_start

#define btime_vh_stop      generic_vh_stop
#define cookrace_vh_stop   generic_vh_stop
#define zoar_vh_stop       generic_vh_stop
#define eggs_vh_stop       generic_vh_stop
#define lnc_vh_stop        generic_vh_stop
#define wtennis_vh_stop    generic_vh_stop
#define mmonkey_vh_stop    generic_vh_stop
#define disco_vh_stop      generic_vh_stop


#define MACHINE_DRIVER(GAMENAME, CLOCK, MAIN_IRQ, SOUND_IRQ, GFX, COLOR)   \
																	\
static struct MachineDriver GAMENAME##_machine_driver =             \
{                                                                   \
	/* basic machine hardware */                                	\
	{		                                                        \
		{	  	                                                    \
			CPU_M6502,                                  			\
			CLOCK,													\
			0,                                          			\
			GAMENAME##_readmem,GAMENAME##_writemem,0,0, 			\
			MAIN_IRQ,1                                  			\
		},		                                                    \
		{		                                                    \
			CPU_M6502 | CPU_AUDIO_CPU,                  			\
			500000, /* 500 kHz */                       			\
			2,      /* memory region #2 */              			\
			GAMENAME##_sound_readmem,GAMENAME##_sound_writemem,0,0, \
			SOUND_IRQ,16   /* IRQs are triggered by the main CPU */ \
		}                                                   		\
	},                                                          	\
	57, 3072,        /* frames per second, vblank duration */   	\
	1,      /* 1 CPU slice per frame - interleaving is forced when a sound command is written */ \
	GAMENAME##_init_machine,		                               	\
																	\
	/* video hardware */                                        	\
	32*8, 32*8, { 1*8, 31*8-1, 1*8, 31*8-1 },                   	\
	GFX,                                                        	\
	COLOR,COLOR,                                                	\
	GAMENAME##_vh_convert_color_prom,                           	\
																	\
	VIDEO_TYPE_RASTER|VIDEO_MODIFIES_PALETTE,                   	\
	0,                                                          	\
	GAMENAME##_vh_start,                                        	\
	GAMENAME##_vh_stop,                                         	\
	GAMENAME##_vh_screenrefresh,                                   	\
																	\
	/* sound hardware */                                        	\
	0,0,0,0,                                                    	\
	{                                                           	\
		{                                                   		\
			SOUND_AY8910,                               			\
			&ay8910_interface                           			\
		}                                                   		\
	}                                                           	\
}

#define EGGS_MACHINE_DRIVER(GAMENAME, CLOCK, MAIN_IRQ, SOUND_IRQ, GFX, COLOR)   \
																	\
static struct MachineDriver GAMENAME##_machine_driver =             \
{                                                                   \
	/* basic machine hardware */                                	\
	{		                                                        \
		{	  	                                                    \
			CPU_M6502,                                  			\
			CLOCK,													\
			0,                                          			\
			GAMENAME##_readmem,GAMENAME##_writemem,0,0, 			\
			MAIN_IRQ,1                                  			\
		}                                                   		\
	},                                                          	\
	57, 3072,        /* frames per second, vblank duration */   	\
	1,      /* 1 CPU slice per frame - interleaving is forced when a sound command is written */ \
	0,						                                    	\
																	\
	/* video hardware */                                        	\
	32*8, 32*8, { 1*8, 31*8-1, 1*8, 31*8-1 },                   	\
	GFX,                                                        	\
	COLOR,COLOR,                                                	\
	GAMENAME##_vh_convert_color_prom,                           	\
																	\
	VIDEO_TYPE_RASTER|VIDEO_MODIFIES_PALETTE,                   	\
	0,                                                          	\
	GAMENAME##_vh_start,                                        	\
	GAMENAME##_vh_stop,                                         	\
	GAMENAME##_vh_screenrefresh,                                   	\
																	\
	/* sound hardware */                                        	\
	0,0,0,0,                                                    	\
	{                                                           	\
		{                                                   		\
			SOUND_AY8910,                               			\
			&ay8910_interface                           			\
		}                                                   		\
	}                                                           	\
}

/*                  NAME      CLOCK    MAIN_IRQ             SOUND_IRQ            GFX_DECODE              COLOR */

MACHINE_DRIVER(     btime,    1500000, btime_irq_interrupt, nmi_interrupt,       btime_gfxdecodeinfo,    16);
MACHINE_DRIVER(     cookrace, 1500000, btime_nmi_interrupt, nmi_interrupt,       cookrace_gfxdecodeinfo, 16);
EGGS_MACHINE_DRIVER(eggs,     1500000, interrupt,           nmi_interrupt,       lnc_gfxdecodeinfo,      8);
MACHINE_DRIVER(     lnc,      1500000, btime_nmi_interrupt, lnc_sound_interrupt, lnc_gfxdecodeinfo,      8);
MACHINE_DRIVER(     wtennis,  1500000, btime_nmi_interrupt, nmi_interrupt,       lnc_gfxdecodeinfo,      8);
MACHINE_DRIVER(     mmonkey,  1500000, btime_nmi_interrupt, nmi_interrupt,       lnc_gfxdecodeinfo,      8);
MACHINE_DRIVER(     bnj,       750000, btime_nmi_interrupt, nmi_interrupt,       bnj_gfxdecodeinfo,      16);
MACHINE_DRIVER(     zoar,     1500000, zoar_irq_interrupt,  nmi_interrupt,       zoar_gfxdecodeinfo,     64);
MACHINE_DRIVER(     disco,     750000, btime_irq_interrupt, nmi_interrupt,       disco_gfxdecodeinfo,    32);


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

	Game driver(s)

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

ROM_START( btime_rom )
	ROM_REGION(0x10000)     /* 64k for code */
	ROM_LOAD( "aa04.9b",      0xc000, 0x1000, 0x368a25b5 )
	ROM_LOAD( "aa06.13b",     0xd000, 0x1000, 0xb4ba400d )
	ROM_LOAD( "aa05.10b",     0xe000, 0x1000, 0x8005bffa )
	ROM_LOAD( "aa07.15b",     0xf000, 0x1000, 0x086440ad )

	ROM_REGION_DISPOSE(0x7800)      /* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "aa12.7k",      0x0000, 0x1000, 0xc4617243 )    /* charset #1 */
	ROM_LOAD( "ab13.9k",      0x1000, 0x1000, 0xac01042f )
	ROM_LOAD( "ab10.10k",     0x2000, 0x1000, 0x854a872a )
	ROM_LOAD( "ab11.12k",     0x3000, 0x1000, 0xd4848014 )
	ROM_LOAD( "aa8.13k",      0x4000, 0x1000, 0x8650c788 )
	ROM_LOAD( "ab9.15k",      0x5000, 0x1000, 0x8dec15e6 )
	ROM_LOAD( "ab00.1b",      0x6000, 0x0800, 0xc7a14485 )    /* charset #2 */
	ROM_LOAD( "ab01.3b",      0x6800, 0x0800, 0x25b49078 )
	ROM_LOAD( "ab02.4b",      0x7000, 0x0800, 0xb8ef56c3 )

	ROM_REGION(0x10000)     /* 64k for the audio CPU */
	ROM_LOAD( "ab14.12h",     0xf000, 0x1000, 0xf55e5211 )

	ROM_REGION(0x0800)      /* background graphics */
	ROM_LOAD( "ab03.6b",      0x0000, 0x0800, 0xd26bc1f3 )
ROM_END

ROM_START( btime2_rom )
	ROM_REGION(0x10000)     /* 64k for code */
	ROM_LOAD( "aa04.9b2",     0xc000, 0x1000, 0xa041e25b )
	ROM_LOAD( "aa06.13b",     0xd000, 0x1000, 0xb4ba400d )
	ROM_LOAD( "aa05.10b",     0xe000, 0x1000, 0x8005bffa )
	ROM_LOAD( "aa07.15b",     0xf000, 0x1000, 0x086440ad )

	ROM_REGION_DISPOSE(0x7800)      /* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "aa12.7k",      0x0000, 0x1000, 0xc4617243 )    /* charset #1 */
	ROM_LOAD( "ab13.9k",      0x1000, 0x1000, 0xac01042f )
	ROM_LOAD( "ab10.10k",     0x2000, 0x1000, 0x854a872a )
	ROM_LOAD( "ab11.12k",     0x3000, 0x1000, 0xd4848014 )
	ROM_LOAD( "aa8.13k",      0x4000, 0x1000, 0x8650c788 )
	ROM_LOAD( "ab9.15k",      0x5000, 0x1000, 0x8dec15e6 )
	ROM_LOAD( "ab00.1b",      0x6000, 0x0800, 0xc7a14485 )    /* charset #2 */
	ROM_LOAD( "ab01.3b",      0x6800, 0x0800, 0x25b49078 )
	ROM_LOAD( "ab02.4b",      0x7000, 0x0800, 0xb8ef56c3 )

	ROM_REGION(0x10000)     /* 64k for the audio CPU */
	ROM_LOAD( "ab14.12h",     0xf000, 0x1000, 0xf55e5211 )

	ROM_REGION(0x0800)      /* background graphics */
	ROM_LOAD( "ab03.6b",      0x0000, 0x0800, 0xd26bc1f3 )
ROM_END

ROM_START( btimem_rom )
	ROM_REGION(0x10000)     /* 64k for code */
	ROM_LOAD( "ab05a1.12b",   0xb000, 0x1000, 0x0a98b230 )
	ROM_LOAD( "ab04.9b",      0xc000, 0x1000, 0x797e5f75 )
	ROM_LOAD( "ab06.13b",     0xd000, 0x1000, 0xc77f3f64 )
	ROM_LOAD( "ab05.10b",     0xe000, 0x1000, 0xb0d3640f )
	ROM_LOAD( "ab07.15b",     0xf000, 0x1000, 0xa142f862 )

	ROM_REGION_DISPOSE(0x7800)      /* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "ab12.7k",      0x0000, 0x1000, 0x6c79f79f )    /* charset #1 */
	ROM_LOAD( "ab13.9k",      0x1000, 0x1000, 0xac01042f )
	ROM_LOAD( "ab10.10k",     0x2000, 0x1000, 0x854a872a )
	ROM_LOAD( "ab11.12k",     0x3000, 0x1000, 0xd4848014 )
	ROM_LOAD( "ab8.13k",      0x4000, 0x1000, 0x70b35bbe )
	ROM_LOAD( "ab9.15k",      0x5000, 0x1000, 0x8dec15e6 )
	ROM_LOAD( "ab00.1b",      0x6000, 0x0800, 0xc7a14485 )    /* charset #2 */
	ROM_LOAD( "ab01.3b",      0x6800, 0x0800, 0x25b49078 )
	ROM_LOAD( "ab02.4b",      0x7000, 0x0800, 0xb8ef56c3 )

	ROM_REGION(0x10000)     /* 64k for the audio CPU */
	ROM_LOAD( "ab14.12h",     0xf000, 0x1000, 0xf55e5211 )

	ROM_REGION(0x0800)      /* background graphics */
	ROM_LOAD( "ab03.6b",      0x0000, 0x0800, 0xd26bc1f3 )
ROM_END

ROM_START( cookrace_rom )
	ROM_REGION(0x10000)     /* 64k for code */
	/* code is in the range 0500-3fff, encrypted */
	ROM_LOAD( "1f.1",         0x0000, 0x2000, 0x68759d32 )
	ROM_LOAD( "2f.2",         0x2000, 0x2000, 0xbe7d72d1 )
	ROM_LOAD( "2k",           0xffe0, 0x0020, 0xe2553b3d )	/* reset/interrupt vectors */

	ROM_REGION_DISPOSE(0x7800)      /* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "m8.7",         0x0000, 0x2000, 0xa1a0d5a6 )  /* charset #1 */
	ROM_LOAD( "m7.8",         0x2000, 0x2000, 0x1104f497 )
	ROM_LOAD( "m6.9",         0x4000, 0x2000, 0xd0d94477 )
	ROM_LOAD( "2f.3",         0x6000, 0x0800, 0x28609a75 )  /* garbage?? */
	ROM_CONTINUE(             0x6000, 0x0800 )              /* charset #2 */
	ROM_LOAD( "4f.4",         0x6800, 0x0800, 0x7742e771 )  /* garbage?? */
	ROM_CONTINUE(             0x6800, 0x0800 )
	ROM_LOAD( "5f.5",         0x7000, 0x0800, 0x611c686f )  /* garbage?? */
	ROM_CONTINUE(             0x7000, 0x0800 )

	ROM_REGION(0x10000)     /* 64k for the audio CPU */
	ROM_LOAD( "6f.6",         0x0000, 0x1000, 0x6b8e0272 ) /* starts at 0000, not f000; 0000-01ff is RAM */
	ROM_RELOAD(               0xf000, 0x1000 )     /* for the reset/interrupt vectors */

    ROM_REGION(0x0040)
    ROM_LOAD( "f9.clr",       0x0000, 0x0020, 0xc2348c1d )	/* palette */
    ROM_LOAD( "b7",           0x0020, 0x0020, 0xe4268fa6 )	/* unknown */
ROM_END

ROM_START( scregg_rom )
	ROM_REGION(0x10000)     /* 64k for code */
	ROM_LOAD( "scregg.e14",   0x3000, 0x1000, 0x29226d77 )
	ROM_LOAD( "scregg.d14",   0x4000, 0x1000, 0xeb143880 )
	ROM_LOAD( "scregg.c14",   0x5000, 0x1000, 0x4455f262 )
	ROM_LOAD( "scregg.b14",   0x6000, 0x1000, 0x044ac5d2 )
	ROM_LOAD( "scregg.a14",   0x7000, 0x1000, 0xb5a0814a )
	ROM_RELOAD(               0xf000, 0x1000 )        /* for reset/interrupt vectors */

	ROM_REGION_DISPOSE(0x6000)      /* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "scregg.j12",   0x0000, 0x1000, 0xa485c10c )
	ROM_LOAD( "scregg.j10",   0x1000, 0x1000, 0x1fd4e539 )
	ROM_LOAD( "scregg.h12",   0x2000, 0x1000, 0x8454f4b2 )
	ROM_LOAD( "scregg.h10",   0x3000, 0x1000, 0x72bd89ee )
	ROM_LOAD( "scregg.g12",   0x4000, 0x1000, 0xff3c2894 )
	ROM_LOAD( "scregg.g10",   0x5000, 0x1000, 0x9c20214a )

	ROM_REGION(0x0040)	/* PROMs */
	ROM_LOAD( "screggco.c6",  0x0000, 0x0020, 0xff23bdd6 )	/* palette */
	ROM_LOAD( "screggco.b4",  0x0020, 0x0020, 0x7cc4824b )	/* unknown */
ROM_END

ROM_START( eggs_rom )
	ROM_REGION(0x10000)     /* 64k for code */
	ROM_LOAD( "e14.bin",      0x3000, 0x1000, 0x4e216f9d )
	ROM_LOAD( "d14.bin",      0x4000, 0x1000, 0x4edb267f )
	ROM_LOAD( "c14.bin",      0x5000, 0x1000, 0x15a5c48c )
	ROM_LOAD( "b14.bin",      0x6000, 0x1000, 0x5c11c00e )
	ROM_LOAD( "a14.bin",      0x7000, 0x1000, 0x953faf07 )
	ROM_RELOAD(               0xf000, 0x1000 )   /* for reset/interrupt vectors */

	ROM_REGION_DISPOSE(0x6000)      /* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "j12.bin",      0x0000, 0x1000, 0xce4a2e46 )
	ROM_LOAD( "j10.bin",      0x1000, 0x1000, 0xa1bcaffc )
	ROM_LOAD( "h12.bin",      0x2000, 0x1000, 0x9562836d )
	ROM_LOAD( "h10.bin",      0x3000, 0x1000, 0x3cfb3a8e )
	ROM_LOAD( "g12.bin",      0x4000, 0x1000, 0x679f8af7 )
	ROM_LOAD( "g10.bin",      0x5000, 0x1000, 0x5b58d3b5 )

	ROM_REGION(0x0040)	/* PROMs */
	ROM_LOAD( "eggs.c6",      0x0000, 0x0020, 0xe8408c81 )	/* palette */
	ROM_LOAD( "screggco.b4",  0x0020, 0x0020, 0x7cc4824b )	/* unknown */
ROM_END

/* There is a flyer with a screen shot for Lock'n'Chase at:
   http://www.gamearchive.com/flyers/video/taito/locknchase_f.jpg  */

ROM_START( lnc_rom )
	ROM_REGION(0x10000)     /* 64k for code */
	ROM_LOAD( "s3-3d",        0xc000, 0x1000, 0x1ab4f2c2 )
	ROM_LOAD( "s2-3c",        0xd000, 0x1000, 0x5e46b789 )
	ROM_LOAD( "s1-3b",        0xe000, 0x1000, 0x1308a32e )
	ROM_LOAD( "s0-3a",        0xf000, 0x1000, 0xbeb4b1fc )

	ROM_REGION_DISPOSE(0x6000)      /* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "s4-11l",       0x0000, 0x1000, 0xa2162a9e )
	ROM_LOAD( "s5-11m",       0x1000, 0x1000, 0x12f1c2db )
	ROM_LOAD( "s6-13l",       0x2000, 0x1000, 0xd21e2a57 )
	ROM_LOAD( "s7-13m",       0x3000, 0x1000, 0xc4f247cd )
	ROM_LOAD( "s8-15l",       0x4000, 0x1000, 0x672a92d0 )
	ROM_LOAD( "s9-15m",       0x5000, 0x1000, 0x87c8ee9a )

	ROM_REGION(0x10000)     /* 64k for the audio CPU */
	ROM_LOAD( "sa-1h",        0xf000, 0x1000, 0x379387ec )

    ROM_REGION(0x0040)	/* PROMs */
    ROM_LOAD( "sc-5m",        0x0000, 0x0020, 0x2a976ebe )	/* palette */
    ROM_LOAD( "sb-4c",        0x0020, 0x0020, 0xa29b4204 )	/* RAS/CAS logic - not used */
ROM_END

ROM_START( wtennis_rom )
	ROM_REGION(0x10000)     /* 64k for code */
	ROM_LOAD( "tx",           0xc000, 0x0800, 0xfd343474 )
	ROM_LOAD( "t4",           0xd000, 0x1000, 0xe465d82c )
	ROM_LOAD( "t3",           0xe000, 0x1000, 0x8f090eab )
	ROM_LOAD( "t2",           0xf000, 0x1000, 0xd2f9dd30 )

	ROM_REGION_DISPOSE(0x6000)      /* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "t7",           0x0000, 0x1000, 0xaa935169 )
	ROM_LOAD( "t10",          0x1000, 0x1000, 0x746be927 )
	ROM_LOAD( "t5",           0x2000, 0x1000, 0xea1efa5d )
	ROM_LOAD( "t8",           0x3000, 0x1000, 0x542ace7b )
	ROM_LOAD( "t6",           0x4000, 0x1000, 0x4fb8565d )
	ROM_LOAD( "t9",           0x5000, 0x1000, 0x4893286d )

	ROM_REGION(0x10000)     /* 64k for the audio CPU */
	ROM_LOAD( "t1",           0x0000, 0x1000, 0x40737ea7 ) /* starts at 0000, not f000; 0000-01ff is RAM */
	ROM_RELOAD(               0xf000, 0x1000 )     /* for the reset/interrupt vectors */

    ROM_REGION(0x0040)	/* PROMs */
    ROM_LOAD( "mb7051.m5",    0x0000, 0x0020, 0xf051cb28 )	/* palette */
    ROM_LOAD( "sb-4c",        0x0020, 0x0020, 0xa29b4204 )	/* RAS/CAS logic - not used */
ROM_END

ROM_START( mmonkey_rom )
	ROM_REGION(0x10000)     /* 64k for code */
	ROM_LOAD( "mmonkey.e4",   0xc000, 0x1000, 0x8d31bf6a )
	ROM_LOAD( "mmonkey.d4",   0xd000, 0x1000, 0xe54f584a )
	ROM_LOAD( "mmonkey.b4",   0xe000, 0x1000, 0x399a161e )
	ROM_LOAD( "mmonkey.a4",   0xf000, 0x1000, 0xf7d3d1e3 )

	ROM_REGION_DISPOSE(0x6000)      /* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "mmonkey.l11",  0x0000, 0x1000, 0xb6aa8566 )
	ROM_LOAD( "mmonkey.m11",  0x1000, 0x1000, 0x6cc4d0c4 )
	ROM_LOAD( "mmonkey.l13",  0x2000, 0x1000, 0x2a343b7e )
	ROM_LOAD( "mmonkey.m13",  0x3000, 0x1000, 0x0230b50d )
	ROM_LOAD( "mmonkey.l14",  0x4000, 0x1000, 0x922bb3e1 )
	ROM_LOAD( "mmonkey.m14",  0x5000, 0x1000, 0xf943e28c )

	ROM_REGION(0x10000)     /* 64k for the audio CPU */
	ROM_LOAD( "mmonkey.h1",   0xf000, 0x1000, 0x5bcb2e81 )

    ROM_REGION(0x0040)	/* PROMs */
    ROM_LOAD( "mmi6331.m5",   0x0000, 0x0020, 0x55e28b32 )	/* palette */
    ROM_LOAD( "sb-4c",        0x0020, 0x0020, 0xa29b4204 )	/* RAS/CAS logic - not used */
ROM_END

ROM_START( brubber_rom )
	ROM_REGION(0x10000)     /* 64k for code */
	/* a000-bfff space for the service ROM */
	ROM_LOAD( "brubber.12c",  0xc000, 0x2000, 0xb5279c70 )
	ROM_LOAD( "brubber.12d",  0xe000, 0x2000, 0xb2ce51f5 )

	ROM_REGION_DISPOSE(0x8000)      /* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "bnj4e.bin",    0x0000, 0x2000, 0xb864d082 )
	ROM_LOAD( "bnj4f.bin",    0x2000, 0x2000, 0x6c31d77a )
	ROM_LOAD( "bnj4h.bin",    0x4000, 0x2000, 0x5824e6fb )
	ROM_LOAD( "bnj10e.bin",   0x6000, 0x1000, 0xf4e9eb49 )
	ROM_LOAD( "bnj10f.bin",   0x7000, 0x1000, 0xa9ffacb4 )

	ROM_REGION(0x10000)     /* 64k for the audio CPU */
	ROM_LOAD( "bnj6c.bin",    0xf000, 0x1000, 0x8c02f662 )
ROM_END

ROM_START( bnj_rom )
	ROM_REGION(0x10000)     /* 64k for code */
	ROM_LOAD( "bnj12b.bin",   0xa000, 0x2000, 0xba3e3801 )
	ROM_LOAD( "bnj12c.bin",   0xc000, 0x2000, 0xfb3a2cdd )
	ROM_LOAD( "bnj12d.bin",   0xe000, 0x2000, 0xb88bc99e )

	ROM_REGION_DISPOSE(0x8000)      /* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "bnj4e.bin",    0x0000, 0x2000, 0xb864d082 )
	ROM_LOAD( "bnj4f.bin",    0x2000, 0x2000, 0x6c31d77a )
	ROM_LOAD( "bnj4h.bin",    0x4000, 0x2000, 0x5824e6fb )
	ROM_LOAD( "bnj10e.bin",   0x6000, 0x1000, 0xf4e9eb49 )
	ROM_LOAD( "bnj10f.bin",   0x7000, 0x1000, 0xa9ffacb4 )

	ROM_REGION(0x10000)     /* 64k for the audio CPU */
	ROM_LOAD( "bnj6c.bin",    0xf000, 0x1000, 0x8c02f662 )
ROM_END

ROM_START( caractn_rom )
	ROM_REGION(0x10000)     /* 64k for code */
	/* a000-bfff space for the service ROM */
	ROM_LOAD( "brubber.12c",  0xc000, 0x2000, 0xb5279c70 )
	ROM_LOAD( "caractn.a6",   0xe000, 0x2000, 0x1d6957c4 )

	ROM_REGION_DISPOSE(0x8000)      /* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "caractn.a0",   0x0000, 0x2000, 0xbf3ea732 )
	ROM_LOAD( "caractn.a1",   0x2000, 0x2000, 0x9789f639 )
	ROM_LOAD( "caractn.a2",   0x4000, 0x2000, 0x51dcc111 )
	ROM_LOAD( "bnj10e.bin",   0x6000, 0x1000, 0xf4e9eb49 )
	ROM_LOAD( "bnj10f.bin",   0x7000, 0x1000, 0xa9ffacb4 )

	ROM_REGION(0x10000)     /* 64k for the audio CPU */
	ROM_LOAD( "bnj6c.bin",    0xf000, 0x1000, 0x8c02f662 )
ROM_END

ROM_START( zoar_rom )
	ROM_REGION(0x10000)     /* 64k for code */
	ROM_LOAD( "zoar15",       0xd000, 0x1000, 0x1f0cfdb7 )
	ROM_LOAD( "zoar16",       0xe000, 0x1000, 0x7685999c )
	ROM_LOAD( "zoar17",       0xf000, 0x1000, 0x619ea867 )

	ROM_REGION_DISPOSE(0xa800)      /* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "zoar00",       0x0000, 0x1000, 0xfd2dcb64 )
	ROM_LOAD( "zoar01",       0x1000, 0x1000, 0x74d3ca48 )
	ROM_LOAD( "zoar03",       0x2000, 0x1000, 0x77b7df14 )
	ROM_LOAD( "zoar04",       0x3000, 0x1000, 0x9be786de )
	ROM_LOAD( "zoar06",       0x4000, 0x1000, 0x07638c71 )
	ROM_LOAD( "zoar07",       0x5000, 0x1000, 0xf4710f25 )

	ROM_LOAD( "zoar10",       0x6000, 0x0800, 0xaa8bcab8 )
	ROM_LOAD( "zoar11",       0x6800, 0x0800, 0xdcdad357 )
	ROM_LOAD( "zoar12",       0x7000, 0x0800, 0xed317e40 )

	ROM_LOAD( "zoar02",       0x7800, 0x1000, 0xd8c3c122 )
	ROM_LOAD( "zoar05",       0x8800, 0x1000, 0x05dc6b09 )
	ROM_LOAD( "zoar08",       0x9800, 0x1000, 0x9a148551 )

	ROM_REGION(0x10000)      /* 64k for the audio CPU */
	ROM_LOAD( "zoar09",       0xf000, 0x1000, 0x18d96ff1 )

	ROM_REGION(0x1000)      /* background graphics */
	ROM_LOAD( "zoar13",       0x0000, 0x1000, 0x8fefa960 )

    ROM_REGION(0x0040)
    ROM_LOAD( "z20-1l",       0x0000, 0x0020, 0xa63f0a07 )
    ROM_LOAD( "z21-1l",       0x0020, 0x0020, 0x5e1e5788 )
ROM_END

ROM_START( disco_rom )
	ROM_REGION(0x10000)     /* 64k for code */
	ROM_LOAD( "disco.w5",     0xa000, 0x1000, 0xb2c87b78 )
	ROM_LOAD( "disco.w4",     0xb000, 0x1000, 0xad7040ee )
	ROM_LOAD( "disco.w3",     0xc000, 0x1000, 0x12fb4f08 )
	ROM_LOAD( "disco.w2",     0xd000, 0x1000, 0x73f6fb2f )
	ROM_LOAD( "disco.w1",     0xe000, 0x1000, 0xee7b536b )
	ROM_LOAD( "disco.w0",     0xf000, 0x1000, 0x7c26e76b )

	ROM_REGION_DISPOSE(0x0010)  /* empty */

	ROM_REGION(0x10000)     /* 64k for the audio CPU */
	ROM_LOAD( "disco.w6",     0xf000, 0x1000, 0xd81e781e )

	ROM_REGION(0x0020)	    /* color PROM */
	ROM_LOAD( "disco.clr",    0x0000, 0x0020, 0xa393f913 )
ROM_END


static int wtennis_reset_hack_r(int offset)
{
	unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];

	/* Otherwise the game goes into test mode and there is no way out that I
	   can see.  I'm not sure how it can work, it probably somehow has to do
	   with the tape system */

	RAM[0xfc30] = 0;

	return RAM[0xc15f];
}

static void wtennis_driver_init(void)
{
	install_mem_read_handler(0, 0xc15f, 0xc15f, wtennis_reset_hack_r);
}


static void btime_decode(void)
{
	unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];


	/* For now, just copy the RAM array over to ROM. Decryption will happen */
	/* at run time, since the CPU applies the decryption only if the previous */
	/* instruction did a memory write. */
	memcpy(ROM,RAM,0x10000);
}

static void zoar_decode(void)
{
	unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];


	/* At location 0xD50A is what looks like an undocumented opcode. I tried
	   implemting it given what opcode 0x23 should do, but it still didn't
	   work in demo mode. So this could be another protection or a bad ROM read.
	   I'm NOPing it out for now. */
	memset(&RAM[0xd50a],0xea,8);

    btime_decode();
}

static void lnc_decode(void)
{
	int A;
	unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];


	/* Swap bits 5 & 6 for opcodes */
	for (A = 0;A < 0x10000;A++)
		ROM[A] = swap_bits_5_6(RAM[A]);
}



static int btime_hiload(void)
{
	unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];


	/* check if the hi score table has already been initialized */
	if (memcmp(&RAM[0x0036],"\x00\x80\x02",3) == 0 &&
		memcmp(&RAM[0x0042],"\x50\x48\x00",3) == 0)
	{
		void *f;

		if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,0)) != 0)
		{
			osd_fread(f,&RAM[0x0036],6*6);
			RAM[0x0033] = RAM[0x0036];
			RAM[0x0034] = RAM[0x0037];
			RAM[0x0035] = RAM[0x0038];
			osd_fclose(f);
		}

		return 1;
	}
	else return 0;  /* we can't load the hi scores yet */
}

static void btime_hisave(void)
{
	void *f;
	unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];


	if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,1)) != 0)
	{
		osd_fwrite(f,&RAM[0x0036],6*6);
		osd_fclose(f);
	}
}


static int eggs_hiload(void)
{
	unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];


	/* check if the hi score table has already been initialized */
	if ((memcmp(&RAM[0x0400],"\x17\x25\x19",3) == 0) &&
		(memcmp(&RAM[0x041B],"\x00\x47\x00",3) == 0))
	{
		void *f;

		if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,0)) != 0)
		{
			osd_fread(f,&RAM[0x0400],0x1E);
			/* Fix hi score at top */
			memcpy(&RAM[0x0015],&RAM[0x0403],3);
			osd_fclose(f);
		}

		return 1;
	}
	else return 0;  /* we can't load the hi scores yet */
}

static void eggs_hisave(void)
{
	void *f;
	unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];


	if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,1)) != 0)
	{
		osd_fwrite(f,&RAM[0x0400],0x1E);
		osd_fclose(f);
	}
}

static int lnc_hiload(void)
{
	unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];
	static int firsttime=0;
	/* check if the hi score table has already been initialized */
	/* the high score table is intialized to all 0, so first of all */
	/* we dirty it, then we wait for it to be cleared again */
	if (firsttime == 0)
	{
		memset(&RAM[0x0008],0xff,3);
		memset(&RAM[0x0294],0xff,16);
		memset(&RAM[0x02a6],0xff,16);
		firsttime = 1;
	}

	/*   Check if the hi score table has already been initialized.
	 */
	if ((memcmp(&RAM[0x0008],"\x00\x00\x00",3) == 0) &&
		(memcmp(&RAM[0x02a6],"\x00\x00\x00",3) == 0))

	{
		void *f;

		if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,0)) != 0)
		{
			int banksave, i;

			osd_fread(f,&RAM[0x0008],0x03);
			osd_fread(f,&RAM[0x0294],0x0f);
			osd_fread(f,&RAM[0x02a6],0x0f);

			/* Put high score on screen as we missed when it was done
			   by the program */
			banksave = *lnc_charbank;
			*lnc_charbank = 0;

			lnc_videoram_w(0x004c, 0x0b);
			lnc_videoram_w(0x0052, (RAM[0x0008] & 0x0f) + 1);
			lnc_videoram_w(0x0051, (RAM[0x0008] >> 4) + 1);
			lnc_videoram_w(0x0050, (RAM[0x0009] & 0x0f) + 1);
			lnc_videoram_w(0x004f, (RAM[0x0009] >> 4) + 1);
			lnc_videoram_w(0x004e, (RAM[0x000a] & 0x0f) + 1);
			lnc_videoram_w(0x004d, (RAM[0x000a] >> 4) + 1);

			/* Remove leading zeros */
			for (i = 0; i < 5; i++)
			{
				if (videoram_r(0x004d + i) != 0x01) break;

				lnc_videoram_w(0x004c + i, 0x00);
				lnc_videoram_w(0x004d + i, 0x0b);
			}

			*lnc_charbank = banksave;

			osd_fclose(f);
		}
		firsttime = 0;
		return 1;
	}

	/*
	 *  The hi scores can't be loaded yet.
	 */
	return 0;
}

static void lnc_hisave(void)
{
	void *f;
	unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];


	if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,1)) != 0)
	{
		osd_fwrite(f,&RAM[0x0008],0x03);
		osd_fwrite(f,&RAM[0x0294],0x0f);
		osd_fwrite(f,&RAM[0x02a6],0x0f);
		osd_fclose(f);
	}
}

static int bnj_hiload(void)
{
	unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];


	/*   Check if the hi score table has already been initialized.
	 */
	if ((memcmp(&RAM[0x0500],"\x01\x00\x12",3) == 0) &&
		(memcmp(&RAM[0x050c],"\x00\x19\x82",3) == 0))

	/*if (RAM[0x0640] == 0x4d)*/
	{
		void *f;

		if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,0)) != 0)
		{
			osd_fread(f,&RAM[0x0500],15);
			osd_fread(f,&RAM[0x0640],15);
			osd_fclose(f);
			/* copy top score to top of screen */
			RAM[0x000c] = RAM[0x0500];
			RAM[0x000b] = RAM[0x0501];
			RAM[0x000a] = RAM[0x0502];
		}

		return 1;
	}

	/*
	 *  The hi scores can't be loaded yet.
	 */
	return 0;
}

static void bnj_hisave(void)
{
	void *f;
	unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];


	if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,1)) != 0)
	{
		osd_fwrite(f,&RAM[0x0500],15);
		osd_fwrite(f,&RAM[0x0640],15);
		osd_fclose(f);
	}
}


static int zoar_hiload(void)
{
	unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];


	/* check if the hi score table has already been initialized */
	if (memcmp(&RAM[0x034b],"\x20",1) == 0)
	{
		void *f;

		if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,0)) != 0)
		{
			osd_fread(f,&RAM[0x02dd],3);
			osd_fread(f,&RAM[0x02e5],5*3);
			osd_fread(f,&RAM[0x034b],3);
			osd_fread(f,&RAM[0x0356],3);
			osd_fread(f,&RAM[0x0361],3);
			osd_fread(f,&RAM[0x036c],3);
			osd_fread(f,&RAM[0x0377],3);
			osd_fclose(f);
		}

		return 1;
	}
	else return 0;  /* we can't load the hi scores yet */
}

static void zoar_hisave(void)
{
	void *f;
	unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];


	if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,1)) != 0)
	{
		osd_fwrite(f,&RAM[0x02dd],3);
		osd_fwrite(f,&RAM[0x02e5],5*3);
		osd_fwrite(f,&RAM[0x034b],3);
		osd_fwrite(f,&RAM[0x0356],3);
		osd_fwrite(f,&RAM[0x0361],3);
		osd_fwrite(f,&RAM[0x036c],3);
		osd_fwrite(f,&RAM[0x0377],3);
		osd_fclose(f);
	}
}

/*** Disco No.1 high score save - RJF (Apr 5, 1999) ***/
static int disco_hiload(void)
{
	unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];
	static int firsttime=0;
	/* check if the hi score table has already been initialized */
	/* the high score table is intialized to all 0, so first of all */
	/* we dirty it, then we wait for it to be cleared again */
	if (firsttime == 0)
	{
		memset(&RAM[0x0006],0xff, 3);
		memset(&RAM[0x0400],0xff, 6*6);
		firsttime = 1;
	}

	/*  Check if the hi score table has already been initialized. */
	if ((memcmp(&RAM[0x0006],"\x00\x00\x00",3) == 0) &&
		(memcmp(&RAM[0x0400],"\x00\x00\x00",3) == 0))
	{
		void *f;

		if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,0)) != 0)
		{
			/* the game only show 5 of 6 entries */
			osd_fread(f,&RAM[0x0400], 6*6);
			osd_fclose(f);

			/* update the high score to top of screen */
			RAM[0x0008] = RAM[0x0400];
			RAM[0x0007] = RAM[0x0401];
			RAM[0x0006] = RAM[0x0402];

		}
		firsttime = 0;
		return 1;
	}

        /* The hi scores can't be loaded yet. */
	return 0;
}

static void disco_hisave(void)
{
	void *f;
	unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];


	if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,1)) != 0)
	{
		osd_fwrite(f,&RAM[0x0400], 6*6);
		osd_fclose(f);
	}
}


struct GameDriver btime_driver =
{
	__FILE__,
	0,
	"btime",
	"Burger Time (Data East set 1)",
	"1982",
	"Data East Corporation",
	"Kevin Brisley (Replay emulator)\nMirko Buffoni (MAME driver)\nNicola Salmoria (MAME driver)\nZsolt Vasvari (ROM decryption)",
	0,
	&btime_machine_driver,
	0,

	btime_rom,
	0, btime_decode,
	0,
	0,	/* sound_prom */

	btime_input_ports,

	0, 0, 0,
	ORIENTATION_ROTATE_270,

	btime_hiload, btime_hisave
};

struct GameDriver btime2_driver =
{
	__FILE__,
	&btime_driver,
	"btime2",
	"Burger Time (Data East set 2)",
	"1982",
	"Data East Corporation",
	"Kevin Brisley (Replay emulator)\nMirko Buffoni (MAME driver)\nNicola Salmoria (MAME driver)\nZsolt Vasvari (ROM decryption)",
	0,
	&btime_machine_driver,
	0,

	btime2_rom,
	0, btime_decode,
	0,
	0,	/* sound_prom */

	btime_input_ports,

	0, 0, 0,
	ORIENTATION_ROTATE_270,

	btime_hiload, btime_hisave
};

struct GameDriver btimem_driver =
{
	__FILE__,
	&btime_driver,
	"btimem",
	"Burger Time (Midway)",
	"1982",
	"Data East (Bally Midway license)",
	"Kevin Brisley (Replay emulator)\nMirko Buffoni (MAME driver)\nNicola Salmoria (MAME driver)\nZsolt Vasvari (ROM decryption)",
	0,
	&btime_machine_driver,
	0,

	btimem_rom,
	0, btime_decode,
	0,
	0,	/* sound_prom */

	btime_input_ports,

	0, 0, 0,
	ORIENTATION_ROTATE_270,

	btime_hiload, btime_hisave
};

struct GameDriver cookrace_driver =
{
	__FILE__,
	&btime_driver,
	"cookrace",
	"Cook Race",
	"1982",
	"bootleg",
	"Kevin Brisley (Replay emulator)\nMirko Buffoni (MAME driver)\nNicola Salmoria (MAME driver)",
	0,
	&cookrace_machine_driver,
	0,

	cookrace_rom,
	0, lnc_decode,
	0,
	0,	/* sound_prom */

	cookrace_input_ports,

    PROM_MEMORY_REGION(3), 0, 0,
	ORIENTATION_ROTATE_270,

	0, 0
};

struct GameDriver scregg_driver =
{
	__FILE__,
	0,
	"scregg",
	"Scrambled Egg",
	"1983",
	"Technos",
	"Nicola Salmoria",
	0,
	&eggs_machine_driver,
	0,

	scregg_rom,
	0, 0,
	0,
	0,	/* sound_prom */

	eggs_input_ports,

	PROM_MEMORY_REGION(2), 0, 0,
	ORIENTATION_ROTATE_270,

	eggs_hiload, eggs_hisave
};

struct GameDriver eggs_driver =
{
	__FILE__,
	&scregg_driver,
	"eggs",
	"Eggs",
	"1983",
	"[Technos] Universal USA",
	"Nicola Salmoria",
	0,
	&eggs_machine_driver,
	0,

	eggs_rom,
	0, 0,
	0,
	0,	/* sound_prom */

	eggs_input_ports,

	PROM_MEMORY_REGION(2), 0, 0,
	ORIENTATION_ROTATE_270,

	eggs_hiload, eggs_hisave
};

struct GameDriver lnc_driver =
{
	__FILE__,
	0,
	"lnc",
	"Lock'n'Chase",
	"1981",
	"Data East Corporation",
	"Zsolt Vasvari\nKevin Brisley (Bump 'n' Jump driver)\nMirko Buffoni (Audio/Add. code)",
	0,
	&lnc_machine_driver,
	0,

	lnc_rom,
	0, lnc_decode,
	0,
	0,	/* sound_prom */

	lnc_input_ports,

    PROM_MEMORY_REGION(3), 0, 0,
	ORIENTATION_ROTATE_270,

	lnc_hiload, lnc_hisave
};

struct GameDriver wtennis_driver =
{
	__FILE__,
	0,
	"wtennis",
	"World Tennis",
	"1982",
	"bootleg",
	"Zsolt Vasvari\nKevin Brisley (Bump 'n' Jump driver)\nMirko Buffoni (Audio/Add. code)",
	GAME_IMPERFECT_COLORS,
	&wtennis_machine_driver,
	wtennis_driver_init,

	wtennis_rom,
	0, lnc_decode,
	0,
	0,	/* sound_prom */

	wtennis_input_ports,

    PROM_MEMORY_REGION(3), 0, 0,
	ORIENTATION_ROTATE_270,

	0, 0
};

struct GameDriver mmonkey_driver =
{
	__FILE__,
	0,
	"mmonkey",
	"Minky Monkey",
	"1982",
	"Technos Japan + Roller Tron",
	"Zsolt Vasvari\nKevin Brisley (Bump 'n' Jump driver)\nMirko Buffoni (Audio/Add. code)",
	0,
	&mmonkey_machine_driver,
	0,

	mmonkey_rom,
	0, lnc_decode,
	0,
	0,	/* sound_prom */

	mmonkey_input_ports,

    PROM_MEMORY_REGION(3), 0, 0,
	ORIENTATION_ROTATE_270,

	0, 0
};

struct GameDriver brubber_driver =
{
	__FILE__,
	0,
	"brubber",
	"Burnin' Rubber",
	"1982",
	"Data East",
	"Kevin Brisley (MAME driver)\nMirko Buffoni (Audio/Add. code)",
	0,
	&bnj_machine_driver,
	0,

	brubber_rom,
	0, lnc_decode,
	0,
	0,	/* sound_prom */

	bnj_input_ports,

	0, 0, 0,
	ORIENTATION_ROTATE_270,

	bnj_hiload, bnj_hisave
};

struct GameDriver bnj_driver =
{
	__FILE__,
	&brubber_driver,
	"bnj",
	"Bump 'n' Jump",
	"1982",
	"Data East USA (Bally Midway license)",
	"Kevin Brisley (MAME driver)\nMirko Buffoni (Audio/Add. code)",
	0,
	&bnj_machine_driver,
	0,

	bnj_rom,
	0, lnc_decode,
	0,
	0,	/* sound_prom */

	bnj_input_ports,

	0, 0, 0,
	ORIENTATION_ROTATE_270,

	bnj_hiload, bnj_hisave
};

struct GameDriver caractn_driver =
{
	__FILE__,
	&brubber_driver,
	"caractn",
	"Car Action",
	"1983",
	"bootleg",
	"Ivan Mackintosh\nKevin Brisley (Bump 'n' Jump driver)\nMirko Buffoni (Audio/Add. code)",
	0,
	&bnj_machine_driver,
	0,

	caractn_rom,
	0, lnc_decode,
	0,
	0,	/* sound_prom */

	bnj_input_ports,

	0, 0, 0,
	ORIENTATION_ROTATE_270,

	bnj_hiload, bnj_hisave
};

struct GameDriver zoar_driver =
{
	__FILE__,
	0,
	"zoar",
	"Zoar",
	"1982",
	"Data East USA",
	"Zsolt Vasvari\nKevin Brisley (Bump 'n' Jump driver)",
	0,
	&zoar_machine_driver,
	0,

	zoar_rom,
	0, zoar_decode,
	0,
	0,	/* sound_prom */

	zoar_input_ports,

    PROM_MEMORY_REGION(4), 0, 0,
	ORIENTATION_ROTATE_270,

	zoar_hiload, zoar_hisave
};

struct GameDriver disco_driver =
{
	__FILE__,
	0,
	"disco",
	"Disco No.1",
	"1982",
	"Data East",
	"Zsolt Vasvari",
	0,
	&disco_machine_driver,
	0,

	disco_rom,
	0, btime_decode,
	0,
	0,	/* sound_prom */

	disco_input_ports,

	PROM_MEMORY_REGION(3), 0, 0,
	ORIENTATION_ROTATE_270,

	disco_hiload, disco_hisave
};


void decocass_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);


static int pip(int offset)
{
	return rand();
}

static struct MemoryReadAddress decocass_readmem[] =
{
	{ 0x0000, 0x01ff, MRA_RAM },
	{ 0xe300, 0xe300, input_port_3_r },     /* DSW1 */
	{ 0xe500, 0xe502, pip },	/* read data from tape */
#if 0
	{ 0x0000, 0x03ff, MRA_RAM },
	{ 0x0500, 0x3fff, MRA_ROM },
	{ 0xc000, 0xc7ff, MRA_RAM },
	{ 0xc800, 0xcbff, btime_mirrorvideoram_r },
	{ 0xcc00, 0xcfff, btime_mirrorcolorram_r },
	{ 0xd000, 0xd0ff, MRA_RAM },	/* background */
	{ 0xd100, 0xd3ff, MRA_RAM },	/* ? */
	{ 0xd400, 0xd7ff, MRA_RAM },	/* background? */
	{ 0xe000, 0xe000, input_port_3_r },     /* DSW1 */
	{ 0xe002, 0xe002, input_port_0_r },     /* IN0 */
	{ 0xe003, 0xe003, input_port_1_r },     /* IN1 */
	{ 0xe004, 0xe004, input_port_2_r },     /* coin */
#endif
	{ 0xf000, 0xffff, MRA_ROM },
	{ -1 }  /* end of table */
};

static struct MemoryWriteAddress decocass_writemem[] =
{
	{ 0x0000, 0x01ff, MWA_RAM },
	{ 0x6000, 0xbfff, deco_charram_w, &deco_charram },
	{ 0xc000, 0xc3ff, videoram_w, &videoram, &videoram_size },
	{ 0xc400, 0xc7ff, colorram_w, &colorram },
	{ 0xc800, 0xcbff, btime_mirrorvideoram_w },
	{ 0xcc00, 0xcfff, btime_mirrorcolorram_w },
	{ 0xe000, 0xe01f, btime_paletteram_w, &paletteram },	/* The "bios" doesn't write to e000 */
									/* but the "loading" background should be blue, not black */
#if 0
	{ 0x0500, 0x3fff, MWA_ROM },
	{ 0xd000, 0xd0ff, MWA_RAM, &bnj_backgroundram, &bnj_backgroundram_size },
	{ 0xd000, 0xd0ff, MWA_RAM },	/* background? */
	{ 0xd100, 0xd3ff, MWA_RAM },	/* ? */
	{ 0xd400, 0xd7ff, MWA_RAM, &bnj_backgroundram, &bnj_backgroundram_size },
	{ 0xe000, 0xe000, bnj_video_control_w },
	{ 0xe001, 0xe001, sound_command_w },
	{ 0x4004, 0x4004, bnj_scroll1_w },
#endif
	{ 0xf000, 0xffff, MWA_ROM },
	{ -1 }  /* end of table */
};

static struct MemoryReadAddress decocass_sound_readmem[] =
{
	{ 0x0000, 0x01ff, MRA_RAM },
#if 0
	{ 0xa000, 0xafff, soundlatch_r },
#endif
	{ 0xf800, 0xffff, MRA_ROM },
	{ -1 }  /* end of table */
};

static struct MemoryWriteAddress decocass_sound_writemem[] =
{
	{ 0x0000, 0x01ff, MWA_RAM },
	{ 0x2000, 0x2fff, AY8910_write_port_0_w },
	{ 0x4000, 0x4fff, AY8910_control_port_0_w },
	{ 0x6000, 0x6fff, AY8910_write_port_1_w },
	{ 0x8000, 0x8fff, AY8910_control_port_1_w },
#if 0
	{ 0xc000, 0xcfff, interrupt_enable_w },
#endif
	{ 0xf800, 0xffff, MWA_ROM },
	{ -1 }  /* end of table */
};

INPUT_PORTS_START( decocass_input_ports )
	PORT_START      /* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH,IPT_JOYSTICK_RIGHT | IPF_4WAY )
	PORT_BIT( 0x02, IP_ACTIVE_HIGH,IPT_JOYSTICK_LEFT | IPF_4WAY )
	PORT_BIT( 0x04, IP_ACTIVE_HIGH,IPT_JOYSTICK_UP | IPF_4WAY )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH,IPT_JOYSTICK_DOWN | IPF_4WAY )
	PORT_BIT( 0x10, IP_ACTIVE_HIGH,IPT_BUTTON1 )
	PORT_BIT( 0x20, IP_ACTIVE_HIGH,IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_HIGH,IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH,IPT_UNUSED )

	PORT_START      /* IN1 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH,IPT_JOYSTICK_RIGHT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x02, IP_ACTIVE_HIGH,IPT_JOYSTICK_LEFT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x04, IP_ACTIVE_HIGH,IPT_JOYSTICK_UP | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH,IPT_JOYSTICK_DOWN | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x10, IP_ACTIVE_HIGH,IPT_BUTTON1 | IPF_COCKTAIL )
	PORT_BIT( 0x20, IP_ACTIVE_HIGH,IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_HIGH,IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH,IPT_UNUSED )

	PORT_START      /* IN2 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH,IPT_UNKNOWN )
	PORT_BIT( 0x02, IP_ACTIVE_HIGH,IPT_UNKNOWN )
	PORT_BIT( 0x04, IP_ACTIVE_HIGH,IPT_UNKNOWN )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH,IPT_START1 )
	PORT_BIT( 0x10, IP_ACTIVE_HIGH,IPT_START2 )
	PORT_BIT( 0x20, IP_ACTIVE_HIGH,IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 )

	PORT_START      /* DSW1 */
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x0c, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x10, 0x00, DEF_STR( Unknown ) )    /* used by the "bios" */
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x10, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) )    /* used by the "bios" */
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x20, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Cocktail ) )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_VBLANK  )

	PORT_START      /* DSW2 */
	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x01, "3" )
	PORT_DIPSETTING(    0x00, "5" )
	PORT_DIPNAME( 0x06, 0x06, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x06, "20000" )
	PORT_DIPSETTING(    0x04, "30000" )
	PORT_DIPSETTING(    0x02, "40000"  )
	PORT_DIPSETTING(    0x00, "50000"  )
	PORT_DIPNAME( 0x08, 0x08, "Enemies" )
	PORT_DIPSETTING(    0x08, "4" )
	PORT_DIPSETTING(    0x00, "6" )
	PORT_DIPNAME( 0x10, 0x10, "End of Level Pepper" )
	PORT_DIPSETTING(    0x10, DEF_STR( No ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x20, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x40, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x80, DEF_STR( On ) )
INPUT_PORTS_END

static struct GfxDecodeInfo decocass_gfxdecodeinfo[] =
{
	{ 0, 0x6000, &charlayout,          0, 4 }, /* char set #1 */
	{ 0, 0x6000, &spritelayout,        0, 4 }, /* sprites */
//	{ 0, 0x6000, &cookrace_tilelayout, 8, 1 }, /* background tiles */
	{ -1 } /* end of array */
};

static struct MachineDriver decocass_machine_driver =
{
	/* basic machine hardware */
	{
		{
			CPU_M6502,
			1500000,	/* ? I guess it should be 750000 like in bnj */
			0,
			decocass_readmem,decocass_writemem,0,0,
			nmi_interrupt,1
		},
		{
			CPU_M6502 | CPU_AUDIO_CPU,
			500000, /* 500 kHz */
			1,      /* memory region #1 */
			decocass_sound_readmem,decocass_sound_writemem,0,0,
ignore_interrupt,0,//			nmi_interrupt,16   /* IRQs are triggered by the main CPU */
		}
	},
	57, 3072,        /* frames per second, vblank duration */
	1,      /* 1 CPU slice per frame - interleaving is forced when a sound command is written */ \
	0,//GAMENAME##_init_machine,

	/* video hardware */
	32*8, 32*8, { 1*8, 31*8-1, 1*8, 31*8-1 },
	decocass_gfxdecodeinfo,
	32,32,//COLOR,COLOR,
	0,//GAMENAME##_vh_convert_color_prom,

	VIDEO_TYPE_RASTER|VIDEO_MODIFIES_PALETTE,
	0,
	btime_vh_start,
	generic_vh_stop,
	decocass_vh_screenrefresh,

	/* sound hardware */
	0,0,0,0,
	{
		{
			SOUND_AY8910,
			&ay8910_interface
		}
	}
};

ROM_START( decocass_rom )
	ROM_REGION(0x10000)     /* 64k for code */
	ROM_LOAD( "rms8.cpu",     0xf000, 0x1000, 0x23d929b7 )
/* the following two are just about the same stuff as the one above */
//	ROM_LOAD( "dsp3.p0b",     0xf000, 0x0800, 0xb67a91d9 )
//	ROM_LOAD( "dsp3.p1b",     0xf800, 0x0800, 0x3bfff5f3 )

	ROM_REGION(0x10000)     /* 64k for the audio CPU */
	ROM_LOAD( "rms8.snd",     0xf800, 0x0800, 0xb66b2c2a )
ROM_END

struct GameDriver decocass_driver =
{
	__FILE__,
	0,
	"decocass",
	"decocass",
	"????",
	"?????",
	"Nicola Salmoria",
	0,
	&decocass_machine_driver,
	0,

	decocass_rom,
	0, lnc_decode,
	0,
	0,	/* sound_prom */

	decocass_input_ports,

    0, 0, 0,
	ORIENTATION_ROTATE_270,

	0, 0
};

