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|
// license:BSD-3-Clause
// copyright-holders:Mathis Rosenhauer
/***************************************************************************
Cinematronics Cosmic Chasm hardware
driver by Mathis Rosenhauer
Games supported:
* Cosmic Chasm
Known bugs:
* none at this time
***************************************************************************/
#include "emu.h"
#include "cpu/m68000/m68000.h"
#include "cpu/z80/z80.h"
#include "machine/6840ptm.h"
#include "machine/gen_latch.h"
#include "machine/watchdog.h"
#include "machine/z80ctc.h"
#include "machine/z80daisy.h"
#include "sound/ay8910.h"
#include "sound/dac.h"
#include "video/vector.h"
#include "screen.h"
#include "speaker.h"
namespace {
class cchasm_state : public driver_device
{
public:
cchasm_state(const machine_config &mconfig, device_type type, const char *tag) :
driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_ctc(*this, "ctc"),
m_audiocpu(*this, "audiocpu"),
m_dac1(*this, "dac1"),
m_dac2(*this, "dac2"),
m_vector(*this, "vector"),
m_screen(*this, "screen"),
m_soundlatch(*this, "soundlatch"),
m_soundlatch2(*this, "soundlatch2"),
m_soundlatch3(*this, "soundlatch3"),
m_soundlatch4(*this, "soundlatch4"),
m_ram(*this, "ram"),
m_inputs(*this, "IN%u", 1U)
{
}
void cchasm(machine_config &config);
INPUT_CHANGED_MEMBER(set_coin_flag);
protected:
virtual void machine_start() override;
TIMER_CALLBACK_MEMBER(refresh_end);
private:
required_device<cpu_device> m_maincpu;
required_device<z80ctc_device> m_ctc;
required_device<z80_device> m_audiocpu;
required_device<dac_bit_interface> m_dac1;
required_device<dac_bit_interface> m_dac2;
required_device<vector_device> m_vector;
required_device<screen_device> m_screen;
required_device<generic_latch_8_device> m_soundlatch;
required_device<generic_latch_8_device> m_soundlatch2;
required_device<generic_latch_8_device> m_soundlatch3;
required_device<generic_latch_8_device> m_soundlatch4;
required_shared_ptr<uint16_t> m_ram;
required_ioport_array<3> m_inputs;
int m_sound_flags = 0;
int m_coin_flag = 0;
int m_output[2]{};
int m_xcenter = 0;
int m_ycenter = 0;
emu_timer *m_refresh_end_timer = nullptr;
void led_w(offs_t offset, uint16_t data);
void refresh_control_w(offs_t offset, uint8_t data);
void reset_coin_flag_w(uint8_t data);
uint8_t coin_sound_r();
uint8_t soundlatch2_r();
void soundlatch4_w(uint8_t data);
void io_w(offs_t offset, uint16_t data, uint16_t mem_mask = ~0);
uint16_t io_r(offs_t offset);
DECLARE_WRITE_LINE_MEMBER(ctc_timer_1_w);
DECLARE_WRITE_LINE_MEMBER(ctc_timer_2_w);
void refresh();
void memmap(address_map &map);
void sound_memmap(address_map &map);
void sound_portmap(address_map &map);
};
/*************************************
*
* Main CPU memory handlers
*
*************************************/
void cchasm_state::memmap(address_map &map)
{
map(0x000000, 0x00ffff).rom();
map(0x040000, 0x04000f).rw("6840ptm", FUNC(ptm6840_device::read), FUNC(ptm6840_device::write)).umask16(0x00ff);
map(0x050000, 0x050000).w(FUNC(cchasm_state::refresh_control_w));
map(0x060000, 0x060001).portr("DSW").w(FUNC(cchasm_state::led_w));
map(0x070000, 0x070001).w("watchdog", FUNC(watchdog_timer_device::reset16_w));
map(0xf80000, 0xf800ff).rw(FUNC(cchasm_state::io_r), FUNC(cchasm_state::io_w));
map(0xffb000, 0xffffff).ram().share(m_ram);
}
/*************************************
*
* Sound CPU memory handlers
*
*************************************/
void cchasm_state::sound_memmap(address_map &map)
{
map(0x0000, 0x0fff).rom();
map(0x4000, 0x43ff).ram();
map(0x5000, 0x53ff).ram();
map(0x6000, 0x6001).mirror(0xf9e).w("ay1", FUNC(ay8910_device::address_data_w));
map(0x6000, 0x6000).mirror(0xf9e).r(FUNC(cchasm_state::coin_sound_r));
map(0x6001, 0x6001).mirror(0xf9e).r("ay1", FUNC(ay8910_device::data_r));
map(0x6020, 0x6021).mirror(0xf9e).w("ay2", FUNC(ay8910_device::address_data_w));
map(0x6021, 0x6021).mirror(0xf9e).r("ay2", FUNC(ay8910_device::data_r));
map(0x6040, 0x6040).mirror(0xf9e).r(m_soundlatch, FUNC(generic_latch_8_device::read)).w(m_soundlatch3, FUNC(generic_latch_8_device::write));
map(0x6041, 0x6041).mirror(0xf9e).rw(FUNC(cchasm_state::soundlatch2_r), FUNC(cchasm_state::soundlatch4_w));
map(0x6061, 0x6061).mirror(0xf9e).w(FUNC(cchasm_state::reset_coin_flag_w));
map(0x7041, 0x7041).noprw(); // TODO
}
void cchasm_state::sound_portmap(address_map &map)
{
map.global_mask(0xff);
map(0x00, 0x03).rw(m_ctc, FUNC(z80ctc_device::read), FUNC(z80ctc_device::write));
}
/*************************************
*
* Port definitions
*
*************************************/
static INPUT_PORTS_START( cchasm )
PORT_START("DSW")
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, "40000" )
PORT_DIPSETTING( 0x04, "60000" )
PORT_DIPSETTING( 0x02, "80000" )
PORT_DIPSETTING( 0x00, "100000" )
PORT_DIPNAME( 0x08, 0x08, DEF_STR( Difficulty ) )
PORT_DIPSETTING( 0x00, DEF_STR( Easy ) )
PORT_DIPSETTING( 0x08, DEF_STR( Hard ) )
PORT_DIPNAME( 0x10, 0x10, "Bonus Frequency" )
PORT_DIPSETTING( 0x00, "Once" )
PORT_DIPSETTING( 0x10, "Every" )
PORT_DIPNAME( 0x20, 0x00, DEF_STR( Demo_Sounds ) )
PORT_DIPSETTING( 0x20, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x40, 0x40, DEF_STR( Coinage ) )
PORT_DIPSETTING( 0x00, DEF_STR( 2C_1C ) )
PORT_DIPSETTING( 0x40, DEF_STR( 1C_1C ) )
PORT_SERVICE( 0x80, IP_ACTIVE_LOW )
PORT_START("IN1")
PORT_BIT( 0xff, 0, IPT_DIAL ) PORT_SENSITIVITY(100) PORT_KEYDELTA(10)
PORT_START("IN2")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON2 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON3 )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START2 )
PORT_START("IN3")
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_CHANGED_MEMBER(DEVICE_SELF, cchasm_state, set_coin_flag, 0)
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_COIN2 ) PORT_CHANGED_MEMBER(DEVICE_SELF, cchasm_state, set_coin_flag, 0)
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN3 ) PORT_CHANGED_MEMBER(DEVICE_SELF, cchasm_state, set_coin_flag, 0)
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("Test 1") PORT_CODE(KEYCODE_F1)
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED ) /* Test 2, not used in cchasm */
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED ) /* Test 3, not used in cchasm */
INPUT_PORTS_END
void cchasm_state::led_w(offs_t offset, uint16_t data)
{
/*logerror("LED write %x to %x\n", data, offset);*/
}
void cchasm_state::reset_coin_flag_w(uint8_t data)
{
if (m_coin_flag)
{
m_coin_flag = 0;
m_ctc->trg0(m_coin_flag);
}
}
INPUT_CHANGED_MEMBER(cchasm_state::set_coin_flag )
{
if (!newval && !m_coin_flag)
{
m_coin_flag = 1;
m_ctc->trg0(m_coin_flag);
}
}
uint8_t cchasm_state::coin_sound_r()
{
uint8_t coin = (m_inputs[2]->read() >> 4) & 0x7;
return m_sound_flags | (m_coin_flag << 3) | coin;
}
uint8_t cchasm_state::soundlatch2_r()
{
m_sound_flags &= ~0x80;
m_ctc->trg2(0);
return m_soundlatch2->read();
}
void cchasm_state::soundlatch4_w(uint8_t data)
{
m_sound_flags |= 0x40;
m_soundlatch4->write(data);
m_maincpu->set_input_line(1, HOLD_LINE);
}
void cchasm_state::io_w(offs_t offset, uint16_t data, uint16_t mem_mask)
{
//static int led;
if (ACCESSING_BITS_8_15)
{
data >>= 8;
switch (offset & 0xf)
{
case 0:
m_soundlatch->write(data);
break;
case 1:
m_sound_flags |= 0x80;
m_soundlatch2->write(data);
m_ctc->trg2(1);
m_audiocpu->pulse_input_line(INPUT_LINE_NMI, attotime::zero);
break;
case 2:
//led = data;
break;
}
}
}
uint16_t cchasm_state::io_r(offs_t offset)
{
switch (offset & 0xf)
{
case 0x0:
return m_soundlatch3->read() << 8;
case 0x1:
m_sound_flags &= ~0x40;
return m_soundlatch4->read() << 8;
case 0x2:
return (m_sound_flags| (ioport("IN3")->read() & 0x07) | 0x08) << 8;
case 0x5:
return m_inputs[1]->read() << 8;
case 0x8:
return m_inputs[0]->read() << 8;
default:
return 0xff << 8;
}
}
WRITE_LINE_MEMBER(cchasm_state::ctc_timer_1_w)
{
if (state) /* rising edge */
{
m_output[0] = !m_output[0];
m_dac1->write(m_output[0]);
}
}
WRITE_LINE_MEMBER(cchasm_state::ctc_timer_2_w)
{
if (state) /* rising edge */
{
m_output[1] = !m_output[1];
m_dac2->write(m_output[1]);
}
}
TIMER_CALLBACK_MEMBER(cchasm_state::refresh_end)
{
m_maincpu->set_input_line(2, ASSERT_LINE);
}
void cchasm_state::refresh()
{
constexpr int HALT = 0;
constexpr int JUMP = 1;
constexpr int COLOR = 2;
constexpr int SCALEY = 3;
constexpr int POSY = 4;
constexpr int SCALEX = 5;
constexpr int POSX = 6;
constexpr int LENGTH = 7;
int pc = 0;
int done = 0;
int currentx = 0, currenty = 0;
int scalex = 0, scaley = 0;
int color = 0;
int total_length = 1; /* length of all lines drawn in a frame */
int move = 0;
m_vector->clear_list();
while (!done)
{
int data = m_ram[pc];
const int opcode = data >> 12;
data &= 0xfff;
if ((opcode > COLOR) && (data & 0x800))
data |= 0xfffff000;
pc++;
switch (opcode)
{
case HALT:
done=1;
break;
case JUMP:
pc = data - 0xb00;
logerror("JUMP to %x\n", data);
break;
case COLOR:
color = vector_device::color444(data ^ 0xfff);
break;
case SCALEY:
scaley = data << 5;
break;
case POSY:
move = 1;
currenty = m_ycenter + (data << 16);
break;
case SCALEX:
scalex = data << 5;
break;
case POSX:
move = 1;
currentx = m_xcenter - (data << 16);
break;
case LENGTH:
if (move)
{
m_vector->add_point (currentx, currenty, 0, 0);
move = 0;
}
currentx -= data * scalex;
currenty += data * scaley;
total_length += abs(data);
if (color)
m_vector->add_point (currentx, currenty, color, 0xff);
else
move = 1;
break;
default:
logerror("Unknown refresh proc opcode %x with data %x at pc = %x\n", opcode, data, pc-2);
done = 1;
break;
}
}
/* Refresh processor runs with 6 MHz */
m_refresh_end_timer->adjust(attotime::from_hz(6000000) * total_length);
}
void cchasm_state::refresh_control_w(offs_t offset, uint8_t data)
{
switch (data)
{
case 0x37:
refresh();
break;
case 0xf7:
m_maincpu->set_input_line(2, CLEAR_LINE);
break;
}
}
void cchasm_state::machine_start()
{
const rectangle &visarea = m_screen->visible_area();
m_xcenter = visarea.xcenter() << 16;
m_ycenter = visarea.ycenter() << 16;
m_refresh_end_timer = timer_alloc(FUNC(cchasm_state::refresh_end), this);
m_coin_flag = 0;
m_sound_flags = 0;
m_output[0] = 0;
m_output[1] = 0;
save_item(NAME(m_sound_flags));
save_item(NAME(m_coin_flag));
save_item(NAME(m_output));
}
/*************************************
*
* CPU config
*
*************************************/
static const z80_daisy_config daisy_chain[] =
{
{ "ctc" },
{ nullptr }
};
/*************************************
*
* Machine drivers
*
*************************************/
void cchasm_state::cchasm(machine_config &config)
{
constexpr XTAL CCHASM_68K_CLOCK(8'000'000);
/* basic machine hardware */
M68000(config, m_maincpu, CCHASM_68K_CLOCK); /* 8 MHz (from schematics) */
m_maincpu->set_addrmap(AS_PROGRAM, &cchasm_state::memmap);
Z80(config, m_audiocpu, 3584229); /* 3.58 MHz (from schematics) */
m_audiocpu->set_daisy_config(daisy_chain);
m_audiocpu->set_addrmap(AS_PROGRAM, &cchasm_state::sound_memmap);
m_audiocpu->set_addrmap(AS_IO, &cchasm_state::sound_portmap);
Z80CTC(config, m_ctc, 3584229 /* same as "audiocpu" */);
m_ctc->intr_callback().set_inputline(m_audiocpu, INPUT_LINE_IRQ0);
m_ctc->zc_callback<1>().set(FUNC(cchasm_state::ctc_timer_1_w));
m_ctc->zc_callback<2>().set(FUNC(cchasm_state::ctc_timer_2_w));
WATCHDOG_TIMER(config, "watchdog");
/* video hardware */
VECTOR(config, m_vector, 0);
SCREEN(config, m_screen, SCREEN_TYPE_VECTOR);
m_screen->set_refresh_hz(40);
m_screen->set_size(400, 300);
m_screen->set_visarea(0, 1024-1, 0, 768-1);
m_screen->set_screen_update("vector", FUNC(vector_device::screen_update));
/* sound hardware */
SPEAKER(config, "speaker").front_center();
GENERIC_LATCH_8(config, m_soundlatch);
GENERIC_LATCH_8(config, m_soundlatch2);
GENERIC_LATCH_8(config, m_soundlatch3);
GENERIC_LATCH_8(config, m_soundlatch4);
AY8910(config, "ay1", 1818182).add_route(ALL_OUTPUTS, "speaker", 0.15);
AY8910(config, "ay2", 1818182).add_route(ALL_OUTPUTS, "speaker", 0.15);
DAC_1BIT(config, m_dac1, 0).add_route(ALL_OUTPUTS, "speaker", 0.375);
DAC_1BIT(config, m_dac2, 0).add_route(ALL_OUTPUTS, "speaker", 0.375);
/* 6840 PTM */
ptm6840_device &ptm(PTM6840(config, "6840ptm", CCHASM_68K_CLOCK/10));
ptm.set_external_clocks(0, (CCHASM_68K_CLOCK / 10).value(), 0);
ptm.irq_callback().set_inputline("maincpu", 4);
}
/*************************************
*
* ROM definitions
*
*************************************/
ROM_START( cchasm )
ROM_REGION( 0x010000, "maincpu", 0 )
ROM_LOAD16_BYTE( "chasm.u4", 0x000000, 0x001000, CRC(19244f25) SHA1(79deaae82da8d1b16d05bbac43ba900c4b1d9f26) )
ROM_LOAD16_BYTE( "chasm.u12", 0x000001, 0x001000, CRC(5d702c7d) SHA1(cbdceed45a1112594fbcbeb6976edc932b32d518) )
ROM_LOAD16_BYTE( "chasm.u8", 0x002000, 0x001000, CRC(56a7ce8a) SHA1(14c790dcddb78d3b81b5a65fe3529e42c9708273) )
ROM_LOAD16_BYTE( "chasm.u16", 0x002001, 0x001000, CRC(2e192db0) SHA1(1a8ff983295ab52b5099c089b3142cdc56d28aee) )
ROM_LOAD16_BYTE( "chasm.u3", 0x004000, 0x001000, CRC(9c71c600) SHA1(900526eaff7483fc478ebfb3f14796ff8fd1d01f) )
ROM_LOAD16_BYTE( "chasm.u11", 0x004001, 0x001000, CRC(a4eb59a5) SHA1(a7bb3ca8f1f000f224def6342ca9d1eabcb210e6) )
ROM_LOAD16_BYTE( "chasm.u7", 0x006000, 0x001000, CRC(8308dd6e) SHA1(82ad7c27e9a41af5280ecd975d3530ff2ed27ad4) )
ROM_LOAD16_BYTE( "chasm.u15", 0x006001, 0x001000, CRC(9d3abf97) SHA1(476d684182d92d66263df82e1b5c4ff24b6814e8) )
ROM_LOAD16_BYTE( "u2", 0x008000, 0x001000, CRC(4e076ae7) SHA1(a72f5425b256785b810ee5f23917b44f778cfcd3) )
ROM_LOAD16_BYTE( "u10", 0x008001, 0x001000, CRC(cc9e19ca) SHA1(6c46ec265c2cc0683470ed1df978b96b577c5ca1) )
ROM_LOAD16_BYTE( "chasm.u6", 0x00a000, 0x001000, CRC(a96525d2) SHA1(1c41bc3bf051cf1830182cbde6fba4e56db7e431) )
ROM_LOAD16_BYTE( "chasm.u14", 0x00a001, 0x001000, CRC(8e426628) SHA1(2d70a7717b18cc892332b9d5d2de3ceba6c1481d) )
ROM_LOAD16_BYTE( "u1", 0x00c000, 0x001000, CRC(88b71027) SHA1(49fa676d7838c643d642fbc70579ce29e76ba724) )
ROM_LOAD16_BYTE( "chasm.u9", 0x00c001, 0x001000, CRC(d90c9773) SHA1(4033f0579f0782db2157f6cbece53b0d74e61d4f) )
ROM_LOAD16_BYTE( "chasm.u5", 0x00e000, 0x001000, CRC(e4a58b7d) SHA1(0e5f948cd110804e6119fafb4e3fa5904dd1390f) )
ROM_LOAD16_BYTE( "chasm.u13", 0x00e001, 0x001000, CRC(877e849c) SHA1(bdeb97fcb7488e7f0866dd651204c362d2ec9f4f) )
ROM_REGION( 0x10000, "audiocpu", 0 )
ROM_LOAD( "2732.bin", 0x0000, 0x1000, CRC(715adc4a) SHA1(426be4f3334ef7f2e8eb4d533e64276c30812aa3) )
ROM_REGION( 0x0200, "plds", 0 )
ROM_LOAD( "pal12l6.u76", 0x0000, 0x0034, CRC(a30e02b7) SHA1(572f6d3f03e559f12e3bd5e087d7680ac69e9182) )
ROM_LOAD( "pal12l6.u77", 0x0100, 0x0034, CRC(458b9cdb) SHA1(a3bff56d805f6dc494d294f079c3580430acf317) )
ROM_END
ROM_START( cchasm1 )
ROM_REGION( 0x010000, "maincpu", 0 )
ROM_LOAD16_BYTE( "chasm.u4", 0x000000, 0x001000, CRC(19244f25) SHA1(79deaae82da8d1b16d05bbac43ba900c4b1d9f26) )
ROM_LOAD16_BYTE( "chasm.u12", 0x000001, 0x001000, CRC(5d702c7d) SHA1(cbdceed45a1112594fbcbeb6976edc932b32d518) )
ROM_LOAD16_BYTE( "chasm.u8", 0x002000, 0x001000, CRC(56a7ce8a) SHA1(14c790dcddb78d3b81b5a65fe3529e42c9708273) )
ROM_LOAD16_BYTE( "chasm.u16", 0x002001, 0x001000, CRC(2e192db0) SHA1(1a8ff983295ab52b5099c089b3142cdc56d28aee) )
ROM_LOAD16_BYTE( "chasm.u3", 0x004000, 0x001000, CRC(9c71c600) SHA1(900526eaff7483fc478ebfb3f14796ff8fd1d01f) )
ROM_LOAD16_BYTE( "chasm.u11", 0x004001, 0x001000, CRC(a4eb59a5) SHA1(a7bb3ca8f1f000f224def6342ca9d1eabcb210e6) )
ROM_LOAD16_BYTE( "chasm.u7", 0x006000, 0x001000, CRC(8308dd6e) SHA1(82ad7c27e9a41af5280ecd975d3530ff2ed27ad4) )
ROM_LOAD16_BYTE( "chasm.u15", 0x006001, 0x001000, CRC(9d3abf97) SHA1(476d684182d92d66263df82e1b5c4ff24b6814e8) )
ROM_LOAD16_BYTE( "chasm.u2", 0x008000, 0x001000, CRC(008b26ef) SHA1(6758d77bf48f466b8692bf7c678a597792d8cfdb) )
ROM_LOAD16_BYTE( "chasm.u10", 0x008001, 0x001000, CRC(c2c532a3) SHA1(d29d40d42a2f69de0b1e2ee6a32633468a94fd85) )
ROM_LOAD16_BYTE( "chasm.u6", 0x00a000, 0x001000, CRC(a96525d2) SHA1(1c41bc3bf051cf1830182cbde6fba4e56db7e431) )
ROM_LOAD16_BYTE( "chasm.u14", 0x00a001, 0x001000, CRC(8e426628) SHA1(2d70a7717b18cc892332b9d5d2de3ceba6c1481d) )
ROM_LOAD16_BYTE( "chasm.u1", 0x00c000, 0x001000, CRC(e02293f8) SHA1(136757b3c9e0ebfde6c13c57ac52f5fdbf5fd65b) )
ROM_LOAD16_BYTE( "chasm.u9", 0x00c001, 0x001000, CRC(d90c9773) SHA1(4033f0579f0782db2157f6cbece53b0d74e61d4f) )
ROM_LOAD16_BYTE( "chasm.u5", 0x00e000, 0x001000, CRC(e4a58b7d) SHA1(0e5f948cd110804e6119fafb4e3fa5904dd1390f) )
ROM_LOAD16_BYTE( "chasm.u13", 0x00e001, 0x001000, CRC(877e849c) SHA1(bdeb97fcb7488e7f0866dd651204c362d2ec9f4f) )
ROM_REGION( 0x10000, "audiocpu", 0 )
ROM_LOAD( "2732.bin", 0x0000, 0x1000, CRC(715adc4a) SHA1(426be4f3334ef7f2e8eb4d533e64276c30812aa3) )
ROM_END
} // anonymous namespace
/*************************************
*
* Game drivers
*
*************************************/
GAME( 1983, cchasm, 0, cchasm, cchasm, cchasm_state, empty_init, ROT270, "Cinematronics / GCE", "Cosmic Chasm (set 1)", MACHINE_SUPPORTS_SAVE )
GAME( 1983, cchasm1, cchasm, cchasm, cchasm, cchasm_state, empty_init, ROT270, "Cinematronics / GCE", "Cosmic Chasm (set 2)", MACHINE_SUPPORTS_SAVE )
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