/***************************************************************************
Atari Tetris hardware
driver by Zsolt Vasvari
Games supported:
* Tetris
Known bugs:
* none at this time
****************************************************************************
Memory map
****************************************************************************
========================================================================
CPU #1
========================================================================
0000-0FFF R/W xxxxxxxx Program RAM
1000-1FFF R/W xxxxxxxx Playfield RAM
xxxxxxxx (byte 0: LSB of character code)
-----xxx (byte 1: MSB of character code)
xxxx---- (byte 1: palette index)
2000-20FF R/W xxxxxxxx Palette RAM
xxx---- (red component)
---xxx-- (green component)
------xx (blue component)
2400-25FF R/W xxxxxxxx EEPROM
2800-280F R/W xxxxxxxx POKEY #1
2810-281F R/W xxxxxxxx POKEY #2
3000 W -------- Watchdog
3400 W -------- EEPROM write enable
3800 W -------- IRQ acknowledge
3C00 W --xx---- Coin counters
W --x----- (right coin counter)
W ---x---- (left coin counter)
4000-7FFF R xxxxxxxx Banked program ROM
8000-FFFF R xxxxxxxx Program ROM
========================================================================
Interrupts:
IRQ generated by 32V
========================================================================
***************************************************************************/
#include "emu.h"
#include "cpu/m6502/m6502.h"
#include "includes/slapstic.h"
#include "includes/atetris.h"
#include "sound/sn76496.h"
#include "sound/pokey.h"
#include "machine/nvram.h"
#define MASTER_CLOCK XTAL_14_31818MHz
#define BOOTLEG_CLOCK XTAL_14_7456MHz
/*************************************
*
* Interrupt generation
*
*************************************/
static TIMER_CALLBACK( interrupt_gen )
{
atetris_state *state = machine.driver_data<atetris_state>();
int scanline = param;
/* assert/deassert the interrupt */
cputag_set_input_line(machine, "maincpu", 0, (scanline & 32) ? ASSERT_LINE : CLEAR_LINE);
/* set the next timer */
scanline += 32;
if (scanline >= 256)
scanline -= 256;
state->m_interrupt_timer->adjust(machine.primary_screen->time_until_pos(scanline), scanline);
}
static WRITE8_HANDLER( irq_ack_w )
{
cputag_set_input_line(space->machine(), "maincpu", 0, CLEAR_LINE);
}
/*************************************
*
* Machine init
*
*************************************/
static void reset_bank(running_machine &machine)
{
atetris_state *state = machine.driver_data<atetris_state>();
memcpy(state->m_slapstic_base, &state->m_slapstic_source[state->m_current_bank * 0x4000], 0x4000);
}
static MACHINE_START( atetris )
{
atetris_state *state = machine.driver_data<atetris_state>();
/* Allocate interrupt timer */
state->m_interrupt_timer = machine.scheduler().timer_alloc(FUNC(interrupt_gen));
/* Set up save state */
state->save_item(NAME(state->m_current_bank));
state->save_item(NAME(state->m_nvram_write_enable));
machine.save().register_postload(save_prepost_delegate(FUNC(reset_bank), &machine));
}
static MACHINE_RESET( atetris )
{
atetris_state *state = machine.driver_data<atetris_state>();
/* reset the slapstic */
slapstic_reset();
state->m_current_bank = slapstic_bank() & 1;
reset_bank(machine);
/* start interrupts going (32V clocked by 16V) */
state->m_interrupt_timer->adjust(machine.primary_screen->time_until_pos(48), 48);
}
/*************************************
*
* Slapstic handler
*
*************************************/
static READ8_HANDLER( atetris_slapstic_r )
{
atetris_state *state = space->machine().driver_data<atetris_state>();
int result = state->m_slapstic_base[0x2000 + offset];
int new_bank = slapstic_tweak(space, offset) & 1;
/* update for the new bank */
if (new_bank != state->m_current_bank)
{
state->m_current_bank = new_bank;
memcpy(state->m_slapstic_base, &state->m_slapstic_source[state->m_current_bank * 0x4000], 0x4000);
}
return result;
}
/*************************************
*
* Coin counters
*
*************************************/
static WRITE8_HANDLER( coincount_w )
{
coin_counter_w(space->machine(), 0, (data >> 5) & 1);
coin_counter_w(space->machine(), 1, (data >> 4) & 1);
}
/*************************************
*
* NVRAM handlers
*
*************************************/
static WRITE8_HANDLER( nvram_w )
{
atetris_state *state = space->machine().driver_data<atetris_state>();
if (state->m_nvram_write_enable)
state->m_nvram[offset] = data;
state->m_nvram_write_enable = 0;
}
static WRITE8_HANDLER( nvram_enable_w )
{
atetris_state *state = space->machine().driver_data<atetris_state>();
state->m_nvram_write_enable = 1;
}
/*************************************
*
* Main CPU memory handlers
*
*************************************/
/* full address map derived from schematics */
static ADDRESS_MAP_START( main_map, AS_PROGRAM, 8 )
AM_RANGE(0x0000, 0x0fff) AM_RAM
AM_RANGE(0x1000, 0x1fff) AM_RAM_WRITE(atetris_videoram_w) AM_BASE_MEMBER(atetris_state, m_videoram)
AM_RANGE(0x2000, 0x20ff) AM_MIRROR(0x0300) AM_RAM_WRITE(paletteram_RRRGGGBB_w) AM_BASE_GENERIC(paletteram)
AM_RANGE(0x2400, 0x25ff) AM_MIRROR(0x0200) AM_RAM_WRITE(nvram_w) AM_SHARE("nvram")
AM_RANGE(0x2800, 0x280f) AM_MIRROR(0x03e0) AM_DEVREADWRITE("pokey1", pokey_r, pokey_w)
AM_RANGE(0x2810, 0x281f) AM_MIRROR(0x03e0) AM_DEVREADWRITE("pokey2", pokey_r, pokey_w)
AM_RANGE(0x3000, 0x3000) AM_MIRROR(0x03ff) AM_WRITE(watchdog_reset_w)
AM_RANGE(0x3400, 0x3400) AM_MIRROR(0x03ff) AM_WRITE(nvram_enable_w)
AM_RANGE(0x3800, 0x3800) AM_MIRROR(0x03ff) AM_WRITE(irq_ack_w)
AM_RANGE(0x3c00, 0x3c00) AM_MIRROR(0x03ff) AM_WRITE(coincount_w)
AM_RANGE(0x4000, 0x5fff) AM_ROM
AM_RANGE(0x6000, 0x7fff) AM_READ(atetris_slapstic_r)
AM_RANGE(0x8000, 0xffff) AM_ROM
ADDRESS_MAP_END
static ADDRESS_MAP_START( atetrisb2_map, AS_PROGRAM, 8 )
AM_RANGE(0x0000, 0x0fff) AM_RAM
AM_RANGE(0x1000, 0x1fff) AM_RAM_WRITE(atetris_videoram_w) AM_BASE_MEMBER(atetris_state, m_videoram)
AM_RANGE(0x2000, 0x20ff) AM_RAM_WRITE(paletteram_RRRGGGBB_w) AM_BASE_GENERIC(paletteram)
AM_RANGE(0x2400, 0x25ff) AM_RAM_WRITE(nvram_w) AM_SHARE("nvram")
AM_RANGE(0x2802, 0x2802) AM_DEVWRITE("sn1", sn76496_w)
AM_RANGE(0x2804, 0x2804) AM_DEVWRITE("sn2", sn76496_w)
AM_RANGE(0x2806, 0x2806) AM_DEVWRITE("sn3", sn76496_w)
AM_RANGE(0x2808, 0x2808) AM_READ_PORT("IN0")
AM_RANGE(0x2818, 0x2818) AM_READ_PORT("IN1")
AM_RANGE(0x3000, 0x3000) AM_WRITE(watchdog_reset_w)
AM_RANGE(0x3400, 0x3400) AM_WRITE(nvram_enable_w)
AM_RANGE(0x3800, 0x3800) AM_WRITE(irq_ack_w)
AM_RANGE(0x3c00, 0x3c00) AM_WRITE(coincount_w)
AM_RANGE(0x4000, 0x5fff) AM_ROM
AM_RANGE(0x6000, 0x7fff) AM_READ(atetris_slapstic_r)
AM_RANGE(0x8000, 0xffff) AM_ROM
ADDRESS_MAP_END
/*************************************
*
* Port definitions
*
*************************************/
static INPUT_PORTS_START( atetris )
// These ports are read via the Pokeys
PORT_START("IN0")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN2 )
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_COIN1 )
PORT_DIPNAME( 0x04, 0x00, "Freeze" ) PORT_DIPLOCATION("50H:!4")
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x04, DEF_STR( On ) )
PORT_DIPNAME( 0x08, 0x00, "Freeze Step" ) PORT_DIPLOCATION("50H:!3")
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x08, DEF_STR( On ) )
PORT_DIPUNUSED_DIPLOC( 0x10, 0x00, "50H:!2" ) /* Listed As "SPARE2 (Unused)" */
PORT_DIPUNUSED_DIPLOC( 0x20, 0x00, "50H:!1" ) /* Listed As "SPARE1 (Unused)" */
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_VBLANK )
PORT_SERVICE( 0x80, IP_ACTIVE_HIGH )
PORT_START("IN1")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON1) PORT_PLAYER(1)
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_4WAY PORT_PLAYER(1)
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_4WAY PORT_PLAYER(1)
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_4WAY PORT_PLAYER(1)
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1) PORT_PLAYER(2)
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_4WAY PORT_PLAYER(2)
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_4WAY PORT_PLAYER(2)
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_4WAY PORT_PLAYER(2)
INPUT_PORTS_END
// Same as the regular one except they added a Flip Controls switch
static INPUT_PORTS_START( atetrisc )
PORT_INCLUDE( atetris )
PORT_MODIFY("IN0")
PORT_DIPNAME( 0x20, 0x00, "Flip Controls" ) PORT_DIPLOCATION("50H:!1")
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x20, DEF_STR( On ) )
INPUT_PORTS_END
/*************************************
*
* Graphics layouts
*
*************************************/
static const gfx_layout charlayout =
{
8,8,
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},
{ 0*4*8, 1*4*8, 2*4*8, 3*4*8, 4*4*8, 5*4*8, 6*4*8, 7*4*8},
8*8*4
};
static GFXDECODE_START( atetris )
GFXDECODE_ENTRY( "gfx1", 0, charlayout, 0, 16 )
GFXDECODE_END
/*************************************
*
* Sound definitions
*
*************************************/
static const pokey_interface pokey_interface_1 =
{
{ DEVCB_NULL },
DEVCB_INPUT_PORT("IN0")
};
static const pokey_interface pokey_interface_2 =
{
{ DEVCB_NULL },
DEVCB_INPUT_PORT("IN1")
};
/*************************************
*
* Machine driver
*
*************************************/
static MACHINE_CONFIG_START( atetris, atetris_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", M6502,MASTER_CLOCK/8)
MCFG_CPU_PROGRAM_MAP(main_map)
MCFG_MACHINE_START(atetris)
MCFG_MACHINE_RESET(atetris)
MCFG_NVRAM_ADD_1FILL("nvram")
/* video hardware */
MCFG_GFXDECODE(atetris)
MCFG_PALETTE_LENGTH(256)
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
/* note: these parameters are from published specs, not derived */
/* the board uses an SOS-2 chip to generate video signals */
MCFG_SCREEN_RAW_PARAMS(MASTER_CLOCK/2, 456, 0, 336, 262, 0, 240)
MCFG_SCREEN_UPDATE(atetris)
MCFG_VIDEO_START(atetris)
/* sound hardware */
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_SOUND_ADD("pokey1", POKEY, MASTER_CLOCK/8)
MCFG_SOUND_CONFIG(pokey_interface_1)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MCFG_SOUND_ADD("pokey2", POKEY, MASTER_CLOCK/8)
MCFG_SOUND_CONFIG(pokey_interface_2)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MACHINE_CONFIG_END
static MACHINE_CONFIG_START( atetrisb2, atetris_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", M6502,BOOTLEG_CLOCK/8)
MCFG_CPU_PROGRAM_MAP(atetrisb2_map)
MCFG_MACHINE_START(atetris)
MCFG_MACHINE_RESET(atetris)
MCFG_NVRAM_ADD_1FILL("nvram")
/* video hardware */
MCFG_GFXDECODE(atetris)
MCFG_PALETTE_LENGTH(256)
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
/* note: these parameters are from published specs, not derived */
/* the board uses an SOS-2 chip to generate video signals */
MCFG_SCREEN_RAW_PARAMS(MASTER_CLOCK/2, 456, 0, 336, 262, 0, 240)
MCFG_SCREEN_UPDATE(atetris)
MCFG_VIDEO_START(atetris)
/* sound hardware */
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_SOUND_ADD("sn1", SN76496, BOOTLEG_CLOCK/8)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MCFG_SOUND_ADD("sn2", SN76496, BOOTLEG_CLOCK/8)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MCFG_SOUND_ADD("sn3", SN76496, BOOTLEG_CLOCK/8)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MACHINE_CONFIG_END
/*************************************
*
* ROM definitions
*
*************************************/
ROM_START( atetris )
ROM_REGION( 0x18000, "maincpu", 0 )
ROM_LOAD( "136066-1100.45f", 0x10000, 0x8000, CRC(2acbdb09) SHA1(5e1189227f26563fd3e5372121ea5c915620f892) )
ROM_CONTINUE( 0x08000, 0x8000 )
ROM_REGION( 0x10000, "gfx1", 0 )
ROM_LOAD( "136066-1101.35a", 0x0000, 0x10000, CRC(84a1939f) SHA1(d8577985fc8ed4e74f74c68b7c00c4855b7c3270) )
ROM_END
ROM_START( atetrisa )
ROM_REGION( 0x18000, "maincpu", 0 )
ROM_LOAD( "d1", 0x10000, 0x8000, CRC(2bcab107) SHA1(3cfb8df8cd3782f3ff7f6b32ff15c461352061ee) )
ROM_CONTINUE( 0x08000, 0x8000 )
ROM_REGION( 0x10000, "gfx1", 0 )
ROM_LOAD( "136066-1101.35a", 0x0000, 0x10000, CRC(84a1939f) SHA1(d8577985fc8ed4e74f74c68b7c00c4855b7c3270) )
ROM_END
ROM_START( atetrisb )
ROM_REGION( 0x18000, "maincpu", 0 )
ROM_LOAD( "tetris.01", 0x10000, 0x8000, CRC(944d15f6) SHA1(926fa5cb26b6e6a50bea455eec1f6d3fb92aa95c) )
ROM_CONTINUE( 0x08000, 0x8000 )
ROM_REGION( 0x10000, "gfx1", 0 )
ROM_LOAD( "tetris.02", 0x0000, 0x10000, CRC(5c4e7258) SHA1(58060681a728e74d69b2b6f5d02faa597ca6c226) )
/* there's an extra EEPROM, maybe used for protection crack, which */
/* however doesn't seem to be required to run the game in this driver. */
ROM_REGION( 0x0800, "user1", 0 )
ROM_LOAD( "tetris.03", 0x0000, 0x0800, CRC(26618c0b) SHA1(4d6470bf3a79be3b0766e246abe00582d4c85a97) )
ROM_END
ROM_START( atetrisb2 )
ROM_REGION( 0x18000, "maincpu", 0 )
ROM_LOAD( "k1-01", 0x10000, 0x8000, CRC(fa056809) SHA1(e4ccccdf9b04b68127c7b03ae263519cf00f94cb) )
ROM_CONTINUE( 0x08000, 0x8000 )
ROM_REGION( 0x10000, "gfx1", 0 )
ROM_LOAD( "136066-1101.35a", 0x0000, 0x10000, CRC(84a1939f) SHA1(d8577985fc8ed4e74f74c68b7c00c4855b7c3270) )
ROM_END
ROM_START( atetrisc )
ROM_REGION( 0x18000, "maincpu", 0 )
ROM_LOAD( "tetcktl1.rom", 0x10000, 0x8000, CRC(9afd1f4a) SHA1(323d1576d92c905e8e95108b39cabf6fa0c10db6) )
ROM_CONTINUE( 0x08000, 0x8000 )
ROM_REGION( 0x10000, "gfx1", 0 )
ROM_LOAD( "136066-1103.35a", 0x0000, 0x10000, CRC(ec2a7f93) SHA1(cb850141ffd1504f940fa156a39e71a4146d7fea) )
ROM_END
ROM_START( atetrisc2 )
ROM_REGION( 0x18000, "maincpu", 0 )
ROM_LOAD( "136066-1102.45f", 0x10000, 0x8000, CRC(1bd28902) SHA1(ae8c34f082bce1f827bf60830f207c46cb282421) )
ROM_CONTINUE( 0x08000, 0x8000 )
ROM_REGION( 0x10000, "gfx1", 0 )
ROM_LOAD( "136066-1103.35a", 0x0000, 0x10000, CRC(ec2a7f93) SHA1(cb850141ffd1504f940fa156a39e71a4146d7fea) )
ROM_END
/*************************************
*
* Driver init
*
*************************************/
static DRIVER_INIT( atetris )
{
atetris_state *state = machine.driver_data<atetris_state>();
UINT8 *rgn = machine.region("maincpu")->base();
slapstic_init(machine, 101);
state->m_slapstic_source = &rgn[0x10000];
state->m_slapstic_base = &rgn[0x04000];
}
/*************************************
*
* Game drivers
*
*************************************/
GAME( 1988, atetris, 0, atetris, atetris, atetris, ROT0, "Atari Games", "Tetris (set 1)", GAME_SUPPORTS_SAVE )
GAME( 1988, atetrisa, atetris, atetris, atetris, atetris, ROT0, "Atari Games", "Tetris (set 2)", GAME_SUPPORTS_SAVE )
GAME( 1988, atetrisb, atetris, atetris, atetris, atetris, ROT0, "bootleg", "Tetris (bootleg set 1)", GAME_SUPPORTS_SAVE )
GAME( 1988, atetrisb2,atetris, atetrisb2,atetris, atetris, ROT0, "bootleg", "Tetris (bootleg set 2)", GAME_SUPPORTS_SAVE )
GAME( 1989, atetrisc, atetris, atetris, atetrisc, atetris, ROT270, "Atari Games", "Tetris (cocktail set 1)", GAME_SUPPORTS_SAVE )
GAME( 1989, atetrisc2,atetris, atetris, atetrisc, atetris, ROT270, "Atari Games", "Tetris (cocktail set 2)", GAME_SUPPORTS_SAVE )