/***************************************************************************************
driver based on djboy.c / airbustr.c
PROTECTION SIMULATION IS VERY PRELIMINARY AND SHOULD BE TREATED AS 100% GUESSWORK
Heavy Unit
Kaneko/Taito 1988
This game runs on Kaneko hardware. The game is similar to R-Type.
PCB Layout
----------
M6100391A
M6100392A 880210204
KNA-001
|----------------------------------------------------|
| |
| 6116 6116 |
| 15Mhz 6116 |
| PAL |
| B73_09.2P B73_11.5P |
| |
| |
| Z80-1 DSW1 DSW2 J|
| A|
| 16MHz M|
| M|
| 12MHz 6264 MERMAID A|
| B73_05.1H |
| B73_04.1F B73_08.2F 6116 Z80-2 |
| B73_03.1D Z80-3 B73_12.7E |
| B73_02.1C B73_07.2C PANDORA B73_10.5C 6116 |
| B73_01.1B B73_06.2B 4164 4164 6264 PAL YM3014 |
| 4164 4164 PAL YM2203 |
|----------------------------------------------------|
Notes:
Z80-1 clock : 6.000MHz
Z80-2 clock : 6.000MHz
Z80-3 clock : 6.000MHz
YM2203 clock : 3.000MHz
VSync : 58Hz
HSync : 15.59kHz
\-\ : KANEKO 1988. DIP40 chip, probably 8751 MCU (clock pins match)
MERMAID | : pin 18,19 = 6.000MHz (main clock)
| : pin 30 = 1.000MHz (prog/ale)
/-/ : pin 22 = 111.48Hz (port 2 bit 1)
PANDORA : KANEKO PX79480FP-3 PANDORA-CHIP (C) KANEKO 1988
***************************************************************************************/
#include "driver.h"
#include "deprecat.h"
#include "cpu/z80/z80.h"
#include "sound/2203intf.h"
#include "video/kan_pand.h"
static tilemap *bg_tilemap;
static UINT16 hu_scrollx, hu_scrolly;
static UINT16 port0_data;
static UINT8 mcu_data;
static UINT8 test_mcu;
static UINT8 mcu_ram_mux[0x100];
static struct
{
int attract_timer;
UINT8 program_flow;
UINT8 access_ram_r,access_ram_w;
UINT8 internal_ram[0x80];
UINT8 internal_ram_index;
UINT8 coin_counter;
}mcu_ram;
static MACHINE_RESET( mermaid )
{
/* ticks for the attract mode. */
mcu_ram.attract_timer = 0;
/*
helper for the program flow.
0 = title screen
1 = demo mode
2 = ranking
3 = Push 1p button
4 = Push 1p AND/OR 2p button
5 = player 1 plays
6 = player 2 plays
7 = service mode
8 = game over screen
...
*/
mcu_ram.program_flow = 0;
if(input_port_read(machine, "DSW1") & 4) //service mode
mcu_ram.program_flow = 7;
mcu_ram.coin_counter = 0;
}
static WRITE8_HANDLER( mermaid_data_w )
{
// printf("%02x\n",data);
if(mcu_ram.access_ram_w)
{
mcu_ram.internal_ram[(mcu_ram.internal_ram_index++)&0x7f] = data;
mcu_ram.access_ram_w = 0;
}
else
{
mcu_data = data;
mcu_ram_mux[data] = 0;
if(data == 0)
{
/*next data will be an internal protection RAM write*/
mcu_ram.access_ram_w = 1;
}
}
}
static READ8_HANDLER( mermaid_data_r )
{
static UINT8 res;
if(input_code_pressed_once(KEYCODE_Z))
test_mcu++;
if(input_code_pressed_once(KEYCODE_X))
test_mcu--;
if(mcu_ram.access_ram_r)
{
mcu_ram.access_ram_r = 0;
return mcu_ram.internal_ram[(mcu_ram.internal_ram_index++)&0x7f];
}
// popmessage("%02x",test_mcu);
switch(mcu_data)
{
/*
pc=55f1
store internal mcu ram values, not yet handled.
*/
case 0:
{
/*next data will be an internal protection RAM read*/
mcu_ram.access_ram_r = 1;
return 0;
}
/*
(PC=4f20) 01 $e003 = val
(PC=4f2b) 01 $e004 = val
(PC=4f5c) 01 val > 0xa and e06f = val coin counter (5)
0 = title screen
4 = "push 1p button"
5 = "push 2p button"
6 = copyright Kaneko msg (what is for?)
7 = ranking
8 = (trigger) attract mode
b = (trigger?) player 1 plays
c = (trigger?) player 2 plays
0x10 = game over screen
0x80 = coin error! msg
(PC=4f82) 01 val<<=1 and check if < 0 program flow (6)
(PC=4ef3) 01 $e06c = val, (complement it and AND $3)
(PC=4f13) 01 $e06d = $e06e = val
(PC=4f13) 01
(PC=14b3) 01
(PC=14ca) 81
*/
case 1:
{
switch(mcu_ram_mux[1])
{
case 0:
res = input_port_read(space->machine, "IN0");
/*TODO: state of the button. */
if(~res & 1 && (mcu_ram.program_flow == 3 || mcu_ram.program_flow == 4))
{
mcu_ram.coin_counter--;
mcu_ram.program_flow = 5;
}
if(~res & 4 || ~res & 8)
{
mcu_ram.coin_counter++;
mcu_ram.program_flow = (mcu_ram.coin_counter > 1) ? 4 : 3;
}
break;
case 1: res = input_port_read(space->machine, "IN1"); break;
case 2: res = input_port_read(space->machine, "IN2"); break;
case 3: res = input_port_read(space->machine, "DSW1"); break;
case 4: res = input_port_read(space->machine, "DSW2"); break;
case 5:
res = mcu_ram.coin_counter;
break;
case 6:
/* WRONG! just as a test. */
res = 0;
if(mcu_ram.program_flow == 0)
{
mcu_ram.attract_timer++;
//popmessage("%d",mcu_ram.attract_timer);
if(mcu_ram.attract_timer > 600 && mcu_ram.program_flow == 0) { res = 8; mcu_ram.attract_timer = 0; mcu_ram.program_flow = 1; }
}
if(mcu_ram.program_flow == 1) //demo mode
{
mcu_ram.attract_timer++;
popmessage("%d",mcu_ram.attract_timer);
if(mcu_ram.attract_timer > 200 && mcu_ram.program_flow == 1) { res = 25;/*input_port_read(space->machine, "TEST");*/ mcu_ram.attract_timer = 0; mcu_ram.program_flow = 1; }
}
if(mcu_ram.program_flow == 3)
res = 4;
if(mcu_ram.program_flow == 4)
res = 5;
if(res == 0xb && mcu_ram.program_flow == 5)
res = 0;
else if(mcu_ram.program_flow == 5)
res = 0xb;
break;
}
//printf("(PC=%04x) %02x %02x\n",cpu_get_pc(space->cpu),mcu_data,res);
mcu_ram_mux[1]++;
if(mcu_ram_mux[1] > 6) { mcu_ram_mux[1] = 0; }
return res;
}
/*
(PC=4fbe) 03 ? (Is it read?)
*/
case 3: return mame_rand(space->machine);
/*
(PC=4e4d) 06 complement and put it to e06a
(PC=4e59) 06 $e019 = val
(PC=4f5c) 06 $e06f = val if NOT > 09
(PC=4f82) 06 val<<=1 and check if < 0
*/
// case 6: return 0;
/*
pc=5621 put the value to e003 (and 8)
pc=562f put the value to e004 (and 4)
*/
/* read back dsw. */
case 0xff: return 0;
}
if(cpu_get_pc(space->cpu) != 0x4ee1 && cpu_get_pc(space->cpu) != 0x4e3b &&
cpu_get_pc(space->cpu) != 0x14ca && cpu_get_pc(space->cpu) != 0x14b3 &&
cpu_get_pc(space->cpu) != 0x550b && cpu_get_pc(space->cpu) != 0x551e &&
cpu_get_pc(space->cpu) != 0x5590)
printf("(PC=%04x) %02x\n",cpu_get_pc(space->cpu),mcu_data);
return 0;
}
/*
---- x--- MCU status
---- -x-- ?
*/
static READ8_HANDLER( mermaid_status_r )
{
static UINT8 unk_bit,mcu_status = 8;
// printf("R St\n");
unk_bit^=4;
mcu_status^=8;
return mcu_status | unk_bit | 0x10;
// return mame_rand(space->machine);
}
static TILE_GET_INFO( get_bg_tile_info )
{
int attr = colorram[tile_index];
int code = videoram[tile_index] + ((attr & 0x0f) << 8);
int color = (attr >> 4);
SET_TILE_INFO(1, code, color, 0);
}
static VIDEO_START(hvyunit)
{
bg_tilemap = tilemap_create(machine, get_bg_tile_info, tilemap_scan_rows, 16, 16, 32, 32);
pandora_start(machine,0,0,0);
}
#define SX_POS 152
#define SY_POS 258
static VIDEO_UPDATE(hvyunit)
{
tilemap_set_scrollx( bg_tilemap,0, ((port0_data&0x40)<<2)+ hu_scrollx + SX_POS); //TODO
tilemap_set_scrolly( bg_tilemap,0, ((port0_data&0x80)<<1)+ hu_scrolly + SY_POS); // TODO
// popmessage("%02x %02x",hu_scrollx[0],hu_scrolly[0]);
bitmap_fill(bitmap,cliprect,get_black_pen(screen->machine));
tilemap_draw(bitmap, cliprect, bg_tilemap, 0, 0);
pandora_update(screen->machine,bitmap,cliprect);
return 0;
}
static VIDEO_EOF(hvyunit)
{
pandora_eof(machine);
}
static WRITE8_HANDLER( trigger_nmi_on_sound_cpu2 )
{
soundlatch_w(space,0,data);
cpu_set_input_line(space->machine->cpu[2], INPUT_LINE_NMI, PULSE_LINE);
}
static WRITE8_HANDLER( trigger_nmi_on_sub_cpu)
{
cpu_set_input_line(space->machine->cpu[1], INPUT_LINE_NMI, PULSE_LINE);
}
static WRITE8_HANDLER( main_bankswitch_w )
{
unsigned char *ROM = memory_region(space->machine, "maincpu");
int bank=data&7;
ROM = &ROM[0x4000 * bank];
memory_set_bankptr(space->machine, 1,ROM);
}
WRITE8_HANDLER( hu_videoram_w )
{
videoram[offset] = data;
tilemap_mark_tile_dirty(bg_tilemap, offset);
}
WRITE8_HANDLER( hu_colorram_w )
{
colorram[offset] = data;
tilemap_mark_tile_dirty(bg_tilemap, offset);
}
static ADDRESS_MAP_START( main_memory, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0x0000, 0x7fff) AM_ROM
AM_RANGE(0x8000, 0xbfff) AM_READ(SMH_BANK1)
AM_RANGE(0xc000, 0xcfff) AM_READWRITE( pandora_spriteram_r, pandora_spriteram_w )
AM_RANGE(0xd000, 0xdfff) AM_RAM
AM_RANGE(0xe000, 0xefff) AM_RAM AM_SHARE(1)
AM_RANGE(0xf000, 0xffff) AM_RAM
ADDRESS_MAP_END
static ADDRESS_MAP_START(main_io, ADDRESS_SPACE_IO, 8 )
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0x00, 0x00) AM_WRITE(main_bankswitch_w)
AM_RANGE(0x02, 0x02) AM_WRITE(trigger_nmi_on_sub_cpu)
ADDRESS_MAP_END
static WRITE8_HANDLER( sub_bankswitch_w )
{
unsigned char *ROM = memory_region(space->machine, "sub");
int bank=(data&0x03);
port0_data=data;
ROM = &ROM[0x4000 * bank];
memory_set_bankptr(space->machine, 2,ROM);
}
static WRITE8_HANDLER( hu_scrollx_w)
{
hu_scrollx=data;
}
static WRITE8_HANDLER( hu_scrolly_w)
{
hu_scrolly=data;
}
static ADDRESS_MAP_START( sub_memory, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0x0000, 0x7fff) AM_ROM
AM_RANGE(0x8000, 0xbfff) AM_READ(SMH_BANK2)
AM_RANGE(0xc000, 0xc3ff) AM_RAM_WRITE(hu_videoram_w) AM_BASE(&videoram)
AM_RANGE(0xc400, 0xc7ff) AM_RAM_WRITE(hu_colorram_w) AM_BASE(&colorram)
AM_RANGE(0xd000, 0xd1ff) AM_RAM_WRITE(paletteram_xxxxRRRRGGGGBBBB_split2_w) AM_BASE(&paletteram_2)
AM_RANGE(0xd800, 0xd9ff) AM_RAM_WRITE(paletteram_xxxxRRRRGGGGBBBB_split1_w) AM_BASE(&paletteram)
AM_RANGE(0xd000, 0xdfff) AM_RAM
AM_RANGE(0xe000, 0xefff) AM_RAM AM_SHARE(1)
AM_RANGE(0xf000, 0xffff) AM_RAM
ADDRESS_MAP_END
static ADDRESS_MAP_START(sub_io, ADDRESS_SPACE_IO, 8 )
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0x00, 0x00) AM_WRITE(sub_bankswitch_w)
AM_RANGE(0x02, 0x02) AM_WRITE(trigger_nmi_on_sound_cpu2)
AM_RANGE(0x04, 0x04) AM_READ(mermaid_data_r) AM_WRITE(mermaid_data_w)
AM_RANGE(0x06, 0x06) AM_WRITE(hu_scrolly_w)
AM_RANGE(0x08, 0x08) AM_WRITE(hu_scrollx_w)
AM_RANGE(0x0c, 0x0c) AM_READ(mermaid_status_r)
AM_RANGE(0x0e, 0x0e) AM_RAM
// AM_RANGE(0x22, 0x22) AM_READ(hu_scrolly_hi_reset) //22/a2 taken from ram $f065
// AM_RANGE(0xa2, 0xa2) AM_READ(hu_scrolly_hi_set)
ADDRESS_MAP_END
static WRITE8_HANDLER( sound_bankswitch_w )
{
unsigned char *ROM = memory_region(space->machine, "soundcpu");
int bank=data&0x3;
ROM = &ROM[0x4000 * bank];
memory_set_bankptr(space->machine, 3,ROM);
}
static ADDRESS_MAP_START( sound_memory, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0x0000, 0x7fff) AM_ROM
AM_RANGE(0x8000, 0xbfff) AM_READ(SMH_BANK3)
AM_RANGE(0xc000, 0xc7ff) AM_RAM
ADDRESS_MAP_END
static ADDRESS_MAP_START(sound_io, ADDRESS_SPACE_IO, 8 )
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0x00, 0x00) AM_WRITE(sound_bankswitch_w)
AM_RANGE(0x02, 0x03) AM_DEVREADWRITE("ym", ym2203_r, ym2203_w)
AM_RANGE(0x04, 0x04) AM_READ(soundlatch_r)
ADDRESS_MAP_END
static INPUT_PORTS_START( hvyunit )
PORT_START("IN0")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_COIN1 )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_COIN2 )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_TILT ) // copied from DJ Boy, might not
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_SERVICE )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START("IN1")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START("IN2")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2)
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2)
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2)
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2)
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
/*copied from DJ Boy, might be wrong */
PORT_START("DSW1")
PORT_DIPNAME( 0x01, 0x00, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x01, DEF_STR( On ) )
PORT_DIPNAME( 0x02, 0x00, DEF_STR( Flip_Screen ) )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x02, DEF_STR( On ) )
PORT_DIPNAME( 0x04, 0x00, DEF_STR( Service_Mode ) )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x04, DEF_STR( On ) )
PORT_DIPNAME( 0x08, 0x00, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x08, DEF_STR( On ) )
PORT_DIPNAME( 0x30, 0x00, DEF_STR( Coin_A ) )
PORT_DIPSETTING( 0x20, DEF_STR( 2C_1C ) )
PORT_DIPSETTING( 0x00, DEF_STR( 1C_1C ) )
PORT_DIPSETTING( 0x30, DEF_STR( 2C_3C ) )
PORT_DIPSETTING( 0x10, DEF_STR( 1C_2C ) )
PORT_DIPNAME( 0xc0, 0x00, DEF_STR( Coin_B ) )
PORT_DIPSETTING( 0x80, DEF_STR( 2C_1C ) )
PORT_DIPSETTING( 0x00, DEF_STR( 1C_1C ) )
PORT_DIPSETTING( 0xc0, DEF_STR( 2C_3C ) )
PORT_DIPSETTING( 0x40, DEF_STR( 1C_2C ) )
PORT_START("DSW2")
PORT_DIPNAME( 0x03, 0x00, DEF_STR( Difficulty ) )
PORT_DIPSETTING( 0x01, DEF_STR( Easy ) )
PORT_DIPSETTING( 0x00, DEF_STR( Normal ) )
PORT_DIPSETTING( 0x02, DEF_STR( Hard ) )
PORT_DIPSETTING( 0x03, DEF_STR( Hardest ) )
PORT_DIPNAME( 0x0c, 0x00, "Bonus" )
PORT_DIPSETTING( 0x00, "10,30,50,70,90" )
PORT_DIPSETTING( 0x04, "10,20,30,40,50,60,70,80,90" )
PORT_DIPSETTING( 0x08, "20,50" )
PORT_DIPSETTING( 0x0c, DEF_STR( None ) )
PORT_DIPNAME( 0x30, 0x00, DEF_STR( Lives ) )
PORT_DIPSETTING( 0x10, "3" )
PORT_DIPSETTING( 0x00, "5" )
PORT_DIPSETTING( 0x20, "7" )
PORT_DIPSETTING( 0x30, "9" )
PORT_DIPNAME( 0x40, 0x00, DEF_STR( Demo_Sounds ) )
PORT_DIPSETTING( 0x40, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x80, 0x80, "Stereo Sound" )
PORT_DIPSETTING( 0x80, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_START("TEST")
PORT_DIPNAME( 0x01, 0x01, "TEST" )
PORT_DIPSETTING( 0x01, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x02, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x04, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x08, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x10, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x20, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x40, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x80, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
INPUT_PORTS_END
/****************** Graphics ************************/
static const gfx_layout tile_layout =
{
16,16,
RGN_FRAC(1,1),
4,
{ 0, 1, 2, 3 },
{
0*4,1*4,2*4,3*4,4*4,5*4,6*4,7*4,
8*32+0*4,8*32+1*4,8*32+2*4,8*32+3*4,8*32+4*4,8*32+5*4,8*32+6*4,8*32+7*4
},
{
0*32,1*32,2*32,3*32,4*32,5*32,6*32,7*32,
16*32+0*32,16*32+1*32,16*32+2*32,16*32+3*32,16*32+4*32,16*32+5*32,16*32+6*32,16*32+7*32
},
4*8*32
};
static GFXDECODE_START( hvyunit )
GFXDECODE_ENTRY( "gfx1", 0, tile_layout, 0x100, 16 ) /* sprite bank */
GFXDECODE_ENTRY( "gfx2", 0, tile_layout, 0x000, 16 ) /* background tiles */
GFXDECODE_END
/****************** Machine ************************/
static INTERRUPT_GEN( hvyunit_interrupt )
{
static int addr = 0xff;
addr ^= 0x02;
cpu_set_input_line_and_vector(device, 0, HOLD_LINE, addr);
}
static MACHINE_DRIVER_START( hvyunit )
MDRV_CPU_ADD("maincpu", Z80,6000000)
MDRV_CPU_PROGRAM_MAP(main_memory,0)
MDRV_CPU_IO_MAP(main_io,0)
MDRV_CPU_VBLANK_INT_HACK(hvyunit_interrupt,2)
MDRV_CPU_ADD("sub", Z80,6000000)
MDRV_CPU_PROGRAM_MAP(sub_memory,0)
MDRV_CPU_IO_MAP(sub_io,0)
MDRV_CPU_VBLANK_INT("screen", irq0_line_hold)
MDRV_CPU_ADD("soundcpu", Z80, 6000000)
MDRV_CPU_PROGRAM_MAP(sound_memory,0)
MDRV_CPU_IO_MAP(sound_io,0)
MDRV_CPU_VBLANK_INT("screen", irq0_line_hold)
MDRV_QUANTUM_TIME(HZ(6000))
MDRV_MACHINE_RESET(mermaid)
MDRV_SCREEN_ADD("screen", RASTER)
MDRV_SCREEN_REFRESH_RATE(58)
MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
MDRV_SCREEN_SIZE(256, 256)
MDRV_SCREEN_VISIBLE_AREA(0, 256-1, 16, 240-1)
MDRV_GFXDECODE(hvyunit)
MDRV_PALETTE_LENGTH(0x800)
MDRV_VIDEO_START(hvyunit)
MDRV_VIDEO_UPDATE(hvyunit)
MDRV_VIDEO_EOF(hvyunit)
/* sound hardware */
MDRV_SPEAKER_STANDARD_MONO("mono")
MDRV_SOUND_ADD("ym", YM2203, 3000000)
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.80)
MACHINE_DRIVER_END
ROM_START( hvyunit )
ROM_REGION( 0x20000, "maincpu", 0 )
ROM_LOAD( "b73_10.5c", 0x00000, 0x20000, CRC(ca52210f) SHA1(346951962aa5bbad641117dbd66f035dddc7c0bf) )
ROM_REGION( 0x10000, "sub", 0 )
ROM_LOAD( "b73_11.5p", 0x00000, 0x10000, CRC(cb451695) SHA1(116fd59f96a54c22fae65eea9ee5e58cb9ce5074) )
ROM_REGION( 0x10000, "soundcpu", 0 )
ROM_LOAD( "b73_12.7e", 0x000000, 0x010000, CRC(d1d24fab) SHA1(ed0312535d0b136d79aa885b9e6eea19ebde6409) )
ROM_REGION( 0x02000, "mermaid", 0 )
ROM_LOAD( "mermaid.i8751_mcu", 0x000000, 0x02000, NO_DUMP )
ROM_REGION( 0x200000, "gfx1", 0 ) // loading only verified for roms marked 'ok'
ROM_LOAD( "b73_08.2f", 0x000000, 0x080000, CRC(f83dd808) SHA1(09d5f1e86fad3a0d2d3ac1845103d3f2833c6793) ) // attract ok
ROM_LOAD( "b73_07.2c", 0x100000, 0x010000, CRC(5cffa42c) SHA1(687e047345039479b35d5099e56dbc1d57284ed9) )
ROM_LOAD( "b73_06.2b", 0x120000, 0x010000, CRC(a98e4aea) SHA1(560fef03ad818894c9c7578c6282d55b646e8129) ) // attract ok
ROM_LOAD( "b73_01.1b", 0x140000, 0x010000, CRC(3a8a4489) SHA1(a01d7300015f90ce6dd571ad93e7a58270a99e47) ) // attract ok
ROM_LOAD( "b73_02.1c", 0x160000, 0x010000, CRC(025c536c) SHA1(075e95cc39e792049ae656404e7f7440df064391) ) // attract ok
ROM_LOAD( "b73_03.1d", 0x180000, 0x010000, CRC(ec6020cf) SHA1(2973aa2dc3deb2f27c9f1bad07a7664bad95b3f2) )
ROM_LOAD( "b73_04.1f", 0x1a0000, 0x010000, CRC(f7badbb2) SHA1(d824ab4aba94d7ca02401f4f6f34213143c282ec) )
ROM_LOAD( "b73_05.1h", 0x1c0000, 0x010000, CRC(b8e829d2) SHA1(31102358500d7b58173d4f18647decf5db744416) )
ROM_REGION( 0x80000, "gfx2", 0 )
ROM_LOAD( "b73_09.2p", 0x000000, 0x080000, CRC(537c647f) SHA1(941c0f4e251bc68e53d62e70b033a3a6c145bb7e) )
ROM_END
ROM_START( hvyunitj )
ROM_REGION( 0x20000, "maincpu", 0 )
ROM_LOAD( "b73_30.5c", 0x00000, 0x20000, CRC(600af545) SHA1(c52b9be2bae28848ad0818c296f000a1bda4fa4f) )
ROM_REGION( 0x10000, "sub", 0 )
ROM_LOAD( "b73_14.5p", 0x00000, 0x10000, CRC(0dfb51d4) SHA1(0e6f3b3d4558f12fe1b1620f57a0f4ac2065fd1a) )
ROM_REGION( 0x10000, "soundcpu", 0 )
ROM_LOAD( "b73_12.7e", 0x000000, 0x010000, CRC(d1d24fab) SHA1(ed0312535d0b136d79aa885b9e6eea19ebde6409) )
ROM_REGION( 0x02000, "mermaid", 0 )
ROM_LOAD( "mermaid.i8751_mcu", 0x000000, 0x02000, NO_DUMP )
ROM_REGION( 0x200000, "gfx1", 0 ) // loading only verified for roms marked 'ok'
ROM_LOAD( "b73_08.2f", 0x000000, 0x080000, CRC(f83dd808) SHA1(09d5f1e86fad3a0d2d3ac1845103d3f2833c6793) ) // attract ok
ROM_LOAD( "b73_07.2c", 0x100000, 0x010000, CRC(5cffa42c) SHA1(687e047345039479b35d5099e56dbc1d57284ed9) )
ROM_LOAD( "b73_06.2b", 0x120000, 0x010000, CRC(a98e4aea) SHA1(560fef03ad818894c9c7578c6282d55b646e8129) ) // attract ok
ROM_LOAD( "b73_01.1b", 0x140000, 0x010000, CRC(3a8a4489) SHA1(a01d7300015f90ce6dd571ad93e7a58270a99e47) ) // attract ok
ROM_LOAD( "b73_02.1c", 0x160000, 0x010000, CRC(025c536c) SHA1(075e95cc39e792049ae656404e7f7440df064391) ) // attract ok
ROM_LOAD( "b73_03.1d", 0x180000, 0x010000, CRC(ec6020cf) SHA1(2973aa2dc3deb2f27c9f1bad07a7664bad95b3f2) )
ROM_LOAD( "b73_04.1f", 0x1a0000, 0x010000, CRC(f7badbb2) SHA1(d824ab4aba94d7ca02401f4f6f34213143c282ec) )
ROM_LOAD( "b73_05.1h", 0x1c0000, 0x010000, CRC(b8e829d2) SHA1(31102358500d7b58173d4f18647decf5db744416) )
ROM_REGION( 0x80000, "gfx2", 0 )
ROM_LOAD( "b73_09.2p", 0x000000, 0x080000, CRC(537c647f) SHA1(941c0f4e251bc68e53d62e70b033a3a6c145bb7e) )
ROM_END
ROM_START( hvyunito )
ROM_REGION( 0x20000, "maincpu", 0 )
ROM_LOAD( "b73_13.5c", 0x00000, 0x20000, CRC(e2874601) SHA1(7f7f3287113b8622eb365d04135d2d9c35d70554) )
ROM_REGION( 0x10000, "sub", 0 )
ROM_LOAD( "b73_14.5p", 0x00000, 0x10000, CRC(0dfb51d4) SHA1(0e6f3b3d4558f12fe1b1620f57a0f4ac2065fd1a) )
ROM_REGION( 0x10000, "soundcpu", 0 )
ROM_LOAD( "b73_12.7e", 0x000000, 0x010000, CRC(d1d24fab) SHA1(ed0312535d0b136d79aa885b9e6eea19ebde6409) )
ROM_REGION( 0x02000, "mermaid", 0 )
ROM_LOAD( "mermaid.i8751_mcu", 0x000000, 0x02000, NO_DUMP )
ROM_REGION( 0x200000, "gfx1", 0 ) // loading only verified for roms marked 'ok'
ROM_LOAD( "b73_08.2f", 0x000000, 0x080000, CRC(f83dd808) SHA1(09d5f1e86fad3a0d2d3ac1845103d3f2833c6793) ) // attract ok
ROM_LOAD( "b73_07.2c", 0x100000, 0x010000, CRC(5cffa42c) SHA1(687e047345039479b35d5099e56dbc1d57284ed9) )
ROM_LOAD( "b73_06.2b", 0x120000, 0x010000, CRC(a98e4aea) SHA1(560fef03ad818894c9c7578c6282d55b646e8129) ) // attract ok
ROM_LOAD( "b73_01.1b", 0x140000, 0x010000, CRC(3a8a4489) SHA1(a01d7300015f90ce6dd571ad93e7a58270a99e47) ) // attract ok
ROM_LOAD( "b73_02.1c", 0x160000, 0x010000, CRC(025c536c) SHA1(075e95cc39e792049ae656404e7f7440df064391) ) // attract ok
ROM_LOAD( "b73_03.1d", 0x180000, 0x010000, CRC(ec6020cf) SHA1(2973aa2dc3deb2f27c9f1bad07a7664bad95b3f2) )
ROM_LOAD( "b73_04.1f", 0x1a0000, 0x010000, CRC(f7badbb2) SHA1(d824ab4aba94d7ca02401f4f6f34213143c282ec) )
ROM_LOAD( "b73_05.1h", 0x1c0000, 0x010000, CRC(b8e829d2) SHA1(31102358500d7b58173d4f18647decf5db744416) )
ROM_REGION( 0x80000, "gfx2", 0 )
ROM_LOAD( "b73_09.2p", 0x000000, 0x080000, CRC(537c647f) SHA1(941c0f4e251bc68e53d62e70b033a3a6c145bb7e) )
ROM_END
GAME( 1988, hvyunit, 0, hvyunit, hvyunit, 0, ROT0, "Kaneko / Taito", "Heavy Unit (World)" ,GAME_NOT_WORKING )
GAME( 1988, hvyunitj, hvyunit, hvyunit, hvyunit, 0, ROT0, "Kaneko / Taito", "Heavy Unit (Japan, Newer)" ,GAME_NOT_WORKING )
GAME( 1988, hvyunito, hvyunit, hvyunit, hvyunit, 0, ROT0, "Kaneko / Taito", "Heavy Unit (Japan, Older)" ,GAME_NOT_WORKING )