/***************************************************************************
Tank Battalion memory map (preliminary)
driver by Brad Oliver
$0000-$000f : bullet ram, first entry is player's bullet
$0010-$01ff : zero page & stack
$0200-$07ff : RAM
$0800-$0bff : videoram
$0c00-$0c1f : I/O
Read:
$0c00-$0c03 : p1 joystick
$0c04
$0c07 : stop at grid self-test if bit 7 is low
$0c0f : stop at first self-test if bit 7 is low
$0c18 : Cabinet, 0 = table, 1 = upright
$0c19-$0c1a : Coinage, 00 = free play, 01 = 2 coin 1 credit, 10 = 1 coin 2 credits, 11 = 1 coin 1 credit
$0c1b-$0c1c : Bonus, 00 = 10000, 01 = 15000, 10 = 20000, 11 = none
$0c1d : Tanks, 0 = 3, 1 = 2
$0c1e-$0c1f : ??
Write:
$0c00-$0c01 : p1/p2 start leds
$0c02 : ?? written to at end of IRQ, either 0 or 1 - coin counter?
$0c03 : ?? written to during IRQ if grid test is on
$0c08 : ?? written to during IRQ if grid test is on
$0c09 : Sound - coin ding
$0c0a : NMI enable (active low) ?? game only ??
$0c0b : Sound - background noise, 0 - low rumble, 1 - high rumble
$0c0c : Sound - player fire
$0c0d : Sound - explosion
$0c0f : NMI enable (active high) ?? demo only ??
$0c10 : IRQ ack ??
$0c18 : Watchdog ?? Not written to while game screen is up
$2000-$3fff : ROM
TODO:
. Needs proper discrete emulation
. Resistor values on the color prom need to be verified
Changes:
28 Feb 98 LBO
. Fixed the coin interrupts
. Fixed the color issues, should be 100% if I guessed at the resistor values properly
. Fixed the 2nd player cocktail joystick, had the polarity reversed
. Hacked the sound sample triggers so they work better
Known issues:
. The 'moving' tank rumble noise seems to keep playing a second too long
. Sample support is all a crapshoot. I have no idea how it really works
***************************************************************************/
#include "emu.h"
#include "cpu/m6502/m6502.h"
#include "sound/samples.h"
#include "includes/tankbatt.h"
static WRITE8_HANDLER( tankbatt_led_w )
{
set_led_status(space->machine(), offset,data & 1);
}
static READ8_HANDLER( tankbatt_in0_r )
{
int val;
val = input_port_read(space->machine(), "P1");
return ((val << (7 - offset)) & 0x80);
}
static READ8_HANDLER( tankbatt_in1_r )
{
int val;
val = input_port_read(space->machine(), "P2");
return ((val << (7 - offset)) & 0x80);
}
static READ8_HANDLER( tankbatt_dsw_r )
{
int val;
val = input_port_read(space->machine(), "DSW");
return ((val << (7 - offset)) & 0x80);
}
static WRITE8_HANDLER( tankbatt_interrupt_enable_w )
{
tankbatt_state *state = space->machine().driver_data<tankbatt_state>();
state->m_nmi_enable = !data;
state->m_sound_enable = !data;
/* hack - turn off the engine noise if the normal game nmi's are disabled */
if (data) sample_stop (space->machine().device("samples"), 2);
// interrupt_enable_w (offset, !data);
}
static WRITE8_HANDLER( tankbatt_demo_interrupt_enable_w )
{
tankbatt_state *state = space->machine().driver_data<tankbatt_state>();
state->m_nmi_enable = data;
// interrupt_enable_w (offset, data);
}
static WRITE8_HANDLER( tankbatt_sh_expl_w )
{
tankbatt_state *state = space->machine().driver_data<tankbatt_state>();
if (state->m_sound_enable)
{
device_t *samples = space->machine().device("samples");
sample_start (samples, 1, 3, 0);
}
}
static WRITE8_HANDLER( tankbatt_sh_engine_w )
{
tankbatt_state *state = space->machine().driver_data<tankbatt_state>();
device_t *samples = space->machine().device("samples");
if (state->m_sound_enable)
{
if (data)
sample_start (samples, 2, 2, 1);
else
sample_start (samples, 2, 1, 1);
}
else sample_stop (samples, 2);
}
static WRITE8_HANDLER( tankbatt_sh_fire_w )
{
tankbatt_state *state = space->machine().driver_data<tankbatt_state>();
if (state->m_sound_enable)
{
device_t *samples = space->machine().device("samples");
sample_start (samples, 0, 0, 0);
}
}
static WRITE8_HANDLER( tankbatt_irq_ack_w )
{
/* 0x6e written at the end of the irq routine, could be either irq ack or a coin sample */
cputag_set_input_line(space->machine(), "maincpu", 0, CLEAR_LINE);
}
static WRITE8_HANDLER( tankbatt_coin_counter_w )
{
coin_counter_w(space->machine(), 0,data & 1);
coin_counter_w(space->machine(), 1,data & 1);
}
static WRITE8_HANDLER( tankbatt_coin_lockout_w )
{
coin_lockout_w(space->machine(), 0,data & 1);
coin_lockout_w(space->machine(), 1,data & 1);
}
static ADDRESS_MAP_START( main_map, AS_PROGRAM, 8 )
AM_RANGE(0x0000, 0x000f) AM_RAM AM_BASE_MEMBER(tankbatt_state, m_bulletsram) AM_SIZE_MEMBER(tankbatt_state, m_bulletsram_size)
AM_RANGE(0x0010, 0x01ff) AM_RAM
AM_RANGE(0x0200, 0x07ff) AM_RAM
AM_RANGE(0x0800, 0x0bff) AM_RAM_WRITE(tankbatt_videoram_w) AM_BASE_MEMBER(tankbatt_state, m_videoram)
AM_RANGE(0x0c00, 0x0c07) AM_READ(tankbatt_in0_r)
AM_RANGE(0x0c00, 0x0c01) AM_WRITE(tankbatt_led_w)
AM_RANGE(0x0c02, 0x0c02) AM_WRITE(tankbatt_coin_counter_w)
AM_RANGE(0x0c03, 0x0c03) AM_WRITE(tankbatt_coin_lockout_w)
AM_RANGE(0x0c08, 0x0c0f) AM_READ(tankbatt_in1_r)
AM_RANGE(0x0c08, 0x0c08) AM_WRITENOP //coin counter mirror?
AM_RANGE(0x0c0a, 0x0c0a) AM_WRITE(tankbatt_interrupt_enable_w)
AM_RANGE(0x0c0b, 0x0c0b) AM_WRITE(tankbatt_sh_engine_w)
AM_RANGE(0x0c0c, 0x0c0c) AM_WRITE(tankbatt_sh_fire_w)
AM_RANGE(0x0c0d, 0x0c0d) AM_WRITE(tankbatt_sh_expl_w) // bit 7 == led for the start 2 button
AM_RANGE(0x0c0e, 0x0c0e) AM_WRITENOP //bit 7 == led for the start 1 button
AM_RANGE(0x0c0f, 0x0c0f) AM_WRITE(tankbatt_demo_interrupt_enable_w)
AM_RANGE(0x0c10, 0x0c10) AM_WRITE(tankbatt_irq_ack_w)
AM_RANGE(0x0c18, 0x0c1f) AM_READ(tankbatt_dsw_r)
AM_RANGE(0x0c18, 0x0c18) AM_WRITENOP /* watchdog ?? */
AM_RANGE(0x6000, 0x7fff) AM_ROM AM_REGION("maincpu",0)
AM_RANGE(0xe000, 0xffff) AM_ROM AM_REGION("maincpu",0) //mirror for the reset/irq vectors
AM_RANGE(0x2000, 0xffff) AM_READNOP //anything else might be left-over for a diagnostic ROM or something related to the discrete sound HW
ADDRESS_MAP_END
static INTERRUPT_GEN( tankbatt_interrupt )
{
tankbatt_state *state = device->machine().driver_data<tankbatt_state>();
if (state->m_nmi_enable) device_set_input_line(device,INPUT_LINE_NMI,PULSE_LINE);
}
static INPUT_CHANGED( coin_inserted )
{
cputag_set_input_line(field.machine(), "maincpu", 0, ASSERT_LINE);
}
static INPUT_PORTS_START( tankbatt )
PORT_START("P1") /* IN0 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_4WAY
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_4WAY
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_4WAY
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_4WAY
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_CHANGED(coin_inserted, 0)
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN2 ) PORT_CHANGED(coin_inserted, 0)
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_TILT )
PORT_START("P2") /* IN1 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_4WAY PORT_COCKTAIL
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_4WAY PORT_COCKTAIL
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_4WAY PORT_COCKTAIL
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_4WAY PORT_COCKTAIL
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START2 )
PORT_SERVICE( 0x80, IP_ACTIVE_LOW ) PORT_DIPLOCATION("DSW:8")
PORT_START("DSW") /* DSW */
PORT_DIPNAME( 0x01, 0x01, DEF_STR( Cabinet ) ) PORT_DIPLOCATION("DSW:7")
PORT_DIPSETTING( 0x01, DEF_STR( Upright ) )
PORT_DIPSETTING( 0x00, DEF_STR( Cocktail ) )
PORT_DIPNAME( 0x06, 0x06, DEF_STR( Coinage ) ) PORT_DIPLOCATION("DSW:1,2")
PORT_DIPSETTING( 0x04, DEF_STR( 2C_1C ) )
PORT_DIPSETTING( 0x06, DEF_STR( 1C_1C ) )
PORT_DIPSETTING( 0x02, DEF_STR( 1C_2C ) )
PORT_DIPSETTING( 0x00, DEF_STR( Free_Play ) )
PORT_DIPNAME( 0x18, 0x08, DEF_STR( Bonus_Life ) ) PORT_DIPLOCATION("DSW:3,4")
PORT_DIPSETTING( 0x00, "10000" )
PORT_DIPSETTING( 0x10, "15000" )
PORT_DIPSETTING( 0x08, "20000" )
PORT_DIPSETTING( 0x18, DEF_STR( None ) )
PORT_DIPNAME( 0x20, 0x00, DEF_STR( Lives ) ) PORT_DIPLOCATION("DSW:5")
PORT_DIPSETTING( 0x20, "2" )
PORT_DIPSETTING( 0x00, "3" )
PORT_DIPUNUSED_DIPLOC( 0x40, 0x00, "DSW:6" )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
INPUT_PORTS_END
static const gfx_layout charlayout =
{
8,8, /* 8*8 characters */
256, /* 256 characters */
1, /* 1 bit per pixel */
{ 0 }, /* only one bitplane */
{ 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 const gfx_layout bulletlayout =
{
/* there is no gfx ROM for this one, it is generated by the hardware */
3,3, /* 3*3 box */
1, /* just one */
1, /* 1 bit per pixel */
{ 8*8 },
{ 2, 2, 2 }, /* I "know" that this bit of the */
{ 2, 2, 2 }, /* graphics ROMs is 1 */
0 /* no use */
};
static GFXDECODE_START( tankbatt )
GFXDECODE_ENTRY( "gfx1", 0, charlayout, 0, 256 )
GFXDECODE_ENTRY( "gfx1", 0, bulletlayout, 0, 256 )
GFXDECODE_END
static const char *const tankbatt_sample_names[] =
{
"*tankbatt",
"fire.wav",
"engine1.wav",
"engine2.wav",
"explode1.wav",
0 /* end of array */
};
static const samples_interface tankbatt_samples_interface =
{
3, /* 3 channels */
tankbatt_sample_names
};
static MACHINE_CONFIG_START( tankbatt, tankbatt_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", M6502, 1000000) /* 1 MHz ???? */
MCFG_CPU_PROGRAM_MAP(main_map)
MCFG_CPU_VBLANK_INT("screen", tankbatt_interrupt)
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(60)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
MCFG_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
MCFG_SCREEN_SIZE(32*8, 32*8)
MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 2*8, 30*8-1)
MCFG_SCREEN_UPDATE(tankbatt)
MCFG_GFXDECODE(tankbatt)
MCFG_PALETTE_LENGTH(256*2)
MCFG_PALETTE_INIT(tankbatt)
MCFG_VIDEO_START(tankbatt)
/* sound hardware */
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_SOUND_ADD("samples", SAMPLES, 0)
MCFG_SOUND_CONFIG(tankbatt_samples_interface)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
MACHINE_CONFIG_END
/***************************************************************************
Game driver(s)
***************************************************************************/
ROM_START( tankbatt )
ROM_REGION( 0x2000, "maincpu", 0 )
ROM_LOAD( "tb1-1.1a", 0x0000, 0x0800, CRC(278a0b8c) SHA1(11ea8fe8401b3cd986616a30a759c0ac1a5ce73b) )
ROM_LOAD( "tb1-2.1b", 0x0800, 0x0800, CRC(e0923370) SHA1(8d3dbea877bed9f9c267d8002dc180f6eb1e5a8f) )
ROM_LOAD( "tb1-3.1c", 0x1000, 0x0800, CRC(85005ea4) SHA1(91583081803a5ef600fb90bee34be9edd87f157e) )
ROM_LOAD( "tb1-4.1d", 0x1800, 0x0800, CRC(3dfb5bcf) SHA1(aa24bf74f4d5dc81baf3843196c837e0b731077b) )
ROM_REGION( 0x0800, "gfx1", 0 )
ROM_LOAD( "tb1-5.2k", 0x0000, 0x0800, CRC(aabd4fb1) SHA1(5cff659b531d0f1b6faa503f7c06045c3a209a84) )
ROM_REGION( 0x0200, "proms", 0 )
ROM_LOAD( "bct1-1.l3", 0x0000, 0x0100, CRC(d17518bc) SHA1(f3b0deffa586808bc59e9a24ec1699c54ebe84cc) ) /* prom is a Fujitsu MB7052 or equivalent */
ROM_LOAD( "prom.2d", 0x0100, 0x0100, NO_DUMP )
ROM_END
GAME( 1980, tankbatt, 0, tankbatt, tankbatt, 0, ROT90, "Namco", "Tank Battalion", GAME_IMPERFECT_SOUND )