/
sub.cpp
564 lines (467 loc) · 21.3 KB
/
sub.cpp
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// license:BSD-3-Clause
// copyright-holders: Angelo Salese, David Haywood
/*************************************************************************************
Submarine (c) 1985 Sigma
driver by David Haywood & Angelo Salese
TODO:
- finish dip-switches;
- a bunch of unemulated writes at 0xe***
- sound gets screwy if you coin it up with demo sounds on and during demo play (sound
overlaps);
======================================================================================
2 PCBs
PCB1 - Bottom? (video?) board
|------------------------------------------------------------------- --|
| B |
| A C D E F - H - J |
| |
| |
|1 (rom) |
| OBJ1 T |
|2 Sony e --
| CX23001 (rom) x --
|3 OBJ2 t --
| --C
|4 (prom) (rom) --N
| E4 OBJ3 --3
|5 (prom) --
| E5 --
|6 Sony --
| CX23001 --
|7 (prom) |
| C7 |
|8 (prom) |
| C8 |
|9 (prom) --
| A9 R --
|10 (prom) e --
| A10 s HM6116P-3 --C
|11 (prom) --N
| A11 (rom) --4
|12 VRAM1 --
| --
|13 (rom) --
| VRAM2 --
|14 |
| (rom) |
|15 VRAM3 |
| |
| |
|----------------------------------------------------------------------|
Text = sigma enterprises, inc.
JAPAN F-021BCRT
(rotated 90 degrees left)
Res = a bunch of resistors (colour weighting?)
PCB2 (Top board, CPU board)
|----------------------------------------------------------------------|
| |
| A B C D E F G H |
--| 16000 18.432
| OSC1 OSC2|
|1 - - - - - - - - - - - |
--| | T |
--|2 NECD780 | e --
--| | (z80 CPU) x --
--| 3 | t --
--| - - - - - - - - - - - --C
--| 4 --N
--| --3
--|C 5 T T T --
|N E(rom) E(rom) E(rom) --
|2 6 M M M --
--| P P P --
| 7 1 2 3 |
--|C |
|N 8 |
|1 |
--| 9 --
--| --
--| 10 --
--| --C
--| 11 --N
--| --4
--| 12 DSW1 DSW2 --
--| --
--| 13 --
| --
| 14 L |
--| AY8910 R(rom) H(z80A) |
| 15 O 0 |
| AY8910 M 0 |
| 16 M 8 |
| 0A |
|----------------------------------------------------------------------|
Text = F-020 CPU1 JAPAN sigma enterprises, inc.
*************************************************************************************/
#include "emu.h"
#include "cpu/z80/z80.h"
#include "machine/74259.h"
#include "machine/gen_latch.h"
#include "machine/watchdog.h"
#include "sound/ay8910.h"
#include "emupal.h"
#include "screen.h"
#include "speaker.h"
#include "tilemap.h"
namespace {
class sub_state : public driver_device
{
public:
sub_state(const machine_config &mconfig, device_type type, const char *tag) :
driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_soundcpu(*this, "soundcpu"),
m_gfxdecode(*this, "gfxdecode"),
m_palette(*this, "palette"),
m_vram(*this, "vram"),
m_attr(*this, "attr"),
m_spriteram(*this, "spriteram%u", 1U),
m_scrolly(*this, "scrolly")
{ }
void sub(machine_config &config);
protected:
virtual void machine_start() override;
virtual void video_start() override;
private:
required_device<cpu_device> m_maincpu;
required_device<cpu_device> m_soundcpu;
required_device<gfxdecode_device> m_gfxdecode;
required_device<palette_device> m_palette;
required_shared_ptr<uint8_t> m_vram;
required_shared_ptr<uint8_t> m_attr;
required_shared_ptr_array<uint8_t, 2> m_spriteram;
required_shared_ptr<uint8_t> m_scrolly;
bool m_int_en = false;
bool m_nmi_en = false;
tilemap_t *m_tilemap = nullptr;
void int_mask_w(int state);
void nmi_mask_w(uint8_t data);
void sub_palette(palette_device &palette) const;
TILE_GET_INFO_MEMBER(get_tile_info);
void attr_w(offs_t offset, uint8_t data);
void vram_w(offs_t offset, uint8_t data);
void scrolly_w(offs_t offset, uint8_t data);
void draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect);
uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
void main_irq(int state);
INTERRUPT_GEN_MEMBER(sound_irq);
void main_io_map(address_map &map);
void main_program_map(address_map &map);
void sound_io_map(address_map &map);
void sound_program_map(address_map &map);
};
void sub_state::sub_palette(palette_device &palette) const
{
uint8_t const *const color_prom = memregion("proms")->base();
for (int i = 0; i < 0x100; i++)
{
int const r = color_prom[i | 0x000];
int const g = color_prom[i | 0x100];
int const b = color_prom[i | 0x200];
palette.set_indirect_color(i, rgb_t(pal4bit(r), pal4bit(g), pal4bit(b)));
}
uint8_t const *const lookup = memregion("proms2")->base();
for (int i = 0; i < 0x400; i++)
{
uint8_t const ctabentry = lookup[i | 0x400] | (lookup[i | 0x000] << 4);
palette.set_pen_indirect(i, ctabentry);
}
}
TILE_GET_INFO_MEMBER(sub_state::get_tile_info)
{
int const code = m_vram[tile_index] | ((m_attr[tile_index] & 0xe0) << 3);
int const color = (m_attr[tile_index] & 0x1f) + 0x40;
tileinfo.set(0, code, color, 0);
}
void sub_state::vram_w(offs_t offset, uint8_t data)
{
m_vram[offset] = data;
m_tilemap->mark_tile_dirty(offset & 0x3ff);
}
void sub_state::attr_w(offs_t offset, uint8_t data)
{
m_attr[offset] = data;
m_tilemap->mark_tile_dirty(offset & 0x3ff);
}
void sub_state::scrolly_w(offs_t offset, uint8_t data)
{
m_scrolly[offset] = data;
m_tilemap->set_scrolly(offset, m_scrolly[offset]);
}
void sub_state::video_start()
{
m_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(sub_state::get_tile_info)), TILEMAP_SCAN_ROWS, 8, 8, 32, 32);
m_tilemap->set_scroll_cols(32);
}
/*
sprite bank 1
0 xxxx xxxx X offset
1 tttt tttt tile offset
sprite bank 2
0 yyyy yyyy Y offset
1 f--- ---- flips the X offset
1 -f-- ---- flip y, inverted
1 --cc cccc color
*/
void sub_state::draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect)
{
for (uint8_t i = 0; i < 0x40; i += 2)
{
uint8_t const spr_offs = m_spriteram[0][i + 1];
uint8_t x = m_spriteram[0][i + 0];
uint8_t const y = 0xe0 - m_spriteram[1][i + 1];
uint8_t const col = (m_spriteram[1][i + 0]) & 0x3f;
uint8_t const dx = (m_spriteram[1][i + 0] & 0x80) ? 0 : 1;
uint8_t const fy = (m_spriteram[1][i + 0] & 0x40) ? 0 : 1;
uint8_t fx = 0;
if (flip_screen())
{
x = 0xe0 - x;
fx = 1;
//fx ^= 1;
//fy ^= 1;
}
if (dx)
x = 0xe0 - x;
m_gfxdecode->gfx(1)->transpen(bitmap, cliprect, spr_offs, col, fx, fy, x, y, 0);
}
}
uint32_t sub_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
m_tilemap->draw(screen, bitmap, cliprect, 0, 0);
draw_sprites(bitmap, cliprect);
// re-draw score display above the sprites (window effect)
rectangle opaque_rect;
opaque_rect.min_y = cliprect.min_y;
opaque_rect.max_y = cliprect.max_y;
opaque_rect.min_x = flip_screen() ? cliprect.min_x : (cliprect.max_x - 32);
opaque_rect.max_x = flip_screen() ? (cliprect.min_x + 32) : cliprect.max_x;
m_tilemap->draw(screen, bitmap, opaque_rect, 0, 0);
return 0;
}
void sub_state::machine_start()
{
save_item(NAME(m_int_en));
save_item(NAME(m_nmi_en));
}
void sub_state::int_mask_w(int state)
{
m_int_en = state;
if (!m_int_en)
m_maincpu->set_input_line(0, CLEAR_LINE);
}
void sub_state::main_program_map(address_map &map)
{
map(0x0000, 0xafff).rom();
map(0xb000, 0xbfff).ram();
map(0xc000, 0xc3ff).ram().w(FUNC(sub_state::attr_w)).share(m_attr);
map(0xc400, 0xc7ff).ram().w(FUNC(sub_state::vram_w)).share(m_vram);
map(0xd000, 0xd03f).ram().share(m_spriteram[0]);
map(0xd800, 0xd83f).ram().share(m_spriteram[1]);
map(0xd840, 0xd85f).ram().w(FUNC(sub_state::scrolly_w)).share(m_scrolly);
map(0xe000, 0xe000).w("watchdog", FUNC(watchdog_timer_device::reset_w));
map(0xe800, 0xe807).w("mainlatch", FUNC(ls259_device::write_d0));
map(0xf000, 0xf000).portr("DSW0"); // DSW0?
map(0xf020, 0xf020).portr("DSW1"); // DSW1?
map(0xf040, 0xf040).portr("SYSTEM");
map(0xf060, 0xf060).portr("IN0");
}
void sub_state::nmi_mask_w(uint8_t data)
{
m_nmi_en = data & 1;
if (!m_nmi_en)
m_soundcpu->set_input_line(INPUT_LINE_NMI, CLEAR_LINE);
}
void sub_state::main_io_map(address_map &map)
{
map.global_mask(0xff);
map(0x00, 0x00).r("soundlatch2", FUNC(generic_latch_8_device::read)).w("soundlatch", FUNC(generic_latch_8_device::write)); // to/from sound CPU
}
void sub_state::sound_program_map(address_map &map)
{
map(0x0000, 0x3fff).rom();
map(0x4000, 0x47ff).ram();
map(0x6000, 0x6000).w(FUNC(sub_state::nmi_mask_w));
}
void sub_state::sound_io_map(address_map &map)
{
map.global_mask(0xff);
map(0x00, 0x00).r("soundlatch", FUNC(generic_latch_8_device::read)).w("soundlatch2", FUNC(generic_latch_8_device::write)); // to/from main CPU
map(0x40, 0x41).rw("ay1", FUNC(ay8910_device::data_r), FUNC(ay8910_device::address_data_w));
map(0x80, 0x81).rw("ay2", FUNC(ay8910_device::data_r), FUNC(ay8910_device::address_data_w));
}
static INPUT_PORTS_START( sub )
PORT_START("SYSTEM")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT )
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT )
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN )
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP )
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 )
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_BUTTON2 )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN1 )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START("IN0")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2)
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2)
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2)
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_PLAYER(2)
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(2)
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_PLAYER(2)
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_START2 )
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_START1 )
PORT_START("DSW0")
PORT_DIPNAME( 0x01, 0x01, "DSWC" )
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( 0xf0, 0x10, DEF_STR( Coinage ) )
PORT_DIPSETTING( 0x40, DEF_STR( 3C_1C ) )
PORT_DIPSETTING( 0x20, DEF_STR( 2C_1C ) )
PORT_DIPSETTING( 0x10, DEF_STR( 1C_1C ) )
PORT_DIPSETTING( 0xd0, DEF_STR( 1C_1C ) ) // Duplicate
PORT_DIPSETTING( 0x60, DEF_STR( 4C_5C ) )
PORT_DIPSETTING( 0x50, DEF_STR( 2C_3C ) )
PORT_DIPSETTING( 0x30, DEF_STR( 1C_2C ) )
PORT_DIPSETTING( 0xe0, DEF_STR( 1C_2C ) ) // Duplicate
PORT_DIPSETTING( 0x70, DEF_STR( 1C_3C ) )
PORT_DIPSETTING( 0xa0, DEF_STR( 1C_3C ) ) // Duplicate
PORT_DIPSETTING( 0xf0, DEF_STR( 1C_4C ) )
PORT_DIPSETTING( 0x80, DEF_STR( 1C_5C ) )
PORT_DIPSETTING( 0xb0, DEF_STR( 1C_5C ) ) // Duplicate
PORT_DIPSETTING( 0x90, DEF_STR( 1C_6C ) )
PORT_DIPSETTING( 0xc0, DEF_STR( 1C_6C ) ) // Duplicate
PORT_DIPSETTING( 0x00, DEF_STR( Free_Play ) )
PORT_START("DSW1")
PORT_DIPNAME( 0x03, 0x00, DEF_STR( Lives ) )
PORT_DIPSETTING( 0x00, "3" )
PORT_DIPSETTING( 0x01, "4" )
PORT_DIPSETTING( 0x02, "5" )
PORT_DIPSETTING( 0x03, "6" )
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( Flip_Screen ) )
PORT_DIPSETTING( 0x10, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x20, 0x20, DEF_STR( Cabinet ) )
PORT_DIPSETTING( 0x20, DEF_STR( Upright ) ) // separate controls for each player
PORT_DIPSETTING( 0x00, DEF_STR( Cocktail ) ) // Controls via player 1 for both, but need to get x/y screen flip working to fully test
PORT_DIPNAME( 0x40, 0x40, DEF_STR( Demo_Sounds ) )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x40, 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
static const gfx_layout tiles8x8_layout =
{
8,8,
RGN_FRAC(1,3),
3,
{ RGN_FRAC(2,3), RGN_FRAC(1,3), RGN_FRAC(0,3) },
{ 0, 1, 2, 3, 4, 5, 6, 7 },
{ 7*8, 6*8, 5*8, 4*8, 3*8, 2*8, 1*8, 0*8 },
8*8
};
static const gfx_layout tiles16x32_layout =
{
16,32,
RGN_FRAC(1,3),
3,
{ RGN_FRAC(2,3), RGN_FRAC(1,3), RGN_FRAC(0,3) },
{ 64+0, 64+1, 64+2, 64+3, 64+4, 64+5, 64+6, 64+7, 0, 1, 2, 3, 4, 5, 6, 7 },
{ 55*8, 54*8, 53*8, 52*8, 51*8, 50*8, 49*8, 48*8,
39*8, 38*8, 37*8, 36*8, 35*8, 34*8, 33*8, 32*8,
23*8, 22*8, 21*8, 20*8, 19*8, 18*8, 17*8, 16*8,
7*8, 6*8, 5*8, 4*8, 3*8, 2*8, 1*8, 0*8
},
64*8
};
static GFXDECODE_START( gfx_sub )
GFXDECODE_ENTRY( "tiles", 0, tiles8x8_layout, 0, 0x80 )
GFXDECODE_ENTRY( "sprites", 0, tiles16x32_layout, 0, 0x80 )
GFXDECODE_END
void sub_state::main_irq(int state)
{
if (state && m_int_en)
m_maincpu->set_input_line(0, ASSERT_LINE);
}
INTERRUPT_GEN_MEMBER(sub_state::sound_irq)
{
if (m_nmi_en)
m_soundcpu->set_input_line(INPUT_LINE_NMI, ASSERT_LINE);
}
void sub_state::sub(machine_config &config)
{
static constexpr XTAL MASTER_CLOCK = XTAL(18'432'000);
// basic machine hardware
Z80(config, m_maincpu, MASTER_CLOCK / 6); // ? MHz
m_maincpu->set_addrmap(AS_PROGRAM, &sub_state::main_program_map);
m_maincpu->set_addrmap(AS_IO, &sub_state::main_io_map);
Z80(config, m_soundcpu, MASTER_CLOCK / 6); // ? MHz
m_soundcpu->set_addrmap(AS_PROGRAM, &sub_state::sound_program_map);
m_soundcpu->set_addrmap(AS_IO, &sub_state::sound_io_map);
m_soundcpu->set_periodic_int(FUNC(sub_state::sound_irq), attotime::from_hz(120)); // ???
ls259_device &mainlatch(LS259(config, "mainlatch"));
mainlatch.q_out_cb<0>().set(FUNC(sub_state::int_mask_w));
mainlatch.q_out_cb<1>().set(FUNC(sub_state::flip_screen_set)).invert();
mainlatch.q_out_cb<3>().set_nop(); // same as Q0?
mainlatch.q_out_cb<5>().set_nop();
WATCHDOG_TIMER(config, "watchdog");
// video hardware
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_refresh_hz(60);
screen.set_vblank_time(ATTOSECONDS_IN_USEC(0));
screen.set_size(256, 256);
screen.set_visarea(0, 256-1, 16, 256-16-1);
screen.set_screen_update(FUNC(sub_state::screen_update));
screen.set_palette(m_palette);
screen.screen_vblank().set(FUNC(sub_state::main_irq));
GFXDECODE(config, m_gfxdecode, m_palette, gfx_sub);
PALETTE(config, m_palette, FUNC(sub_state::sub_palette), 0x400, 0x100);
// sound hardware
SPEAKER(config, "mono").front_center();
GENERIC_LATCH_8(config, "soundlatch").data_pending_callback().set_inputline(m_soundcpu, 0);
GENERIC_LATCH_8(config, "soundlatch2");
AY8910(config, "ay1", MASTER_CLOCK / 6 / 2).add_route(ALL_OUTPUTS, "mono", 0.23); // ? MHz
AY8910(config, "ay2", MASTER_CLOCK / 6 / 2).add_route(ALL_OUTPUTS, "mono", 0.23); // ? MHz
}
ROM_START( sub )
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD( "temp 1 pos b6 27128.bin", 0x0000, 0x4000, CRC(6875b31d) SHA1(e7607e53687f1331cc97de939de144a7954ca3c3) )
ROM_LOAD( "temp 2 pos c6 27128.bin", 0x4000, 0x4000, CRC(bc7f8f43) SHA1(088156a66acb2214c638d9d1ad18e9836b27eff0) )
ROM_LOAD( "temp 3 pos d6 2764.bin", 0x8000, 0x2000, CRC(3546c226) SHA1(35e53c0db75c89e8e222d2139b841e77f5cc282c) )
ROM_REGION( 0x10000, "soundcpu", 0 )
ROM_LOAD( "m sound pos f14 2764.bin", 0x0000, 0x2000, CRC(61536a97) SHA1(84effc2251bf7c91e0bb670a651117503de8940d) )
ROM_RELOAD( 0x2000, 0x2000 )
ROM_REGION( 0xc000, "tiles", 0)
ROM_LOAD( "vram 1 pos f12 27128 version3.bin", 0x0000, 0x4000, CRC(8d176ba0) SHA1(b0bf4af97e991545d6b38e8159eb909376e6df35) )
ROM_LOAD( "vram 2 pos f14 27128 version3.bin", 0x4000, 0x4000, CRC(0677cf3a) SHA1(072e9391f6a230b78124e820da0f0d27ffa45dc3) )
ROM_LOAD( "vram 3 pos f15 27128 version3.bin", 0x8000, 0x4000, CRC(9a4cd1a0) SHA1(a321b88386424d73d7d73a7f321317b0f21d2eb6) )
ROM_REGION( 0xc000, "sprites", 0 )
ROM_LOAD( "obj 1 pos h1 27128 version3.bin", 0x0000, 0x4000, CRC(63173e65) SHA1(2be3776c0e08d2c876cfce842e02345389e1fba0) )
ROM_LOAD( "obj 2 pos h3 27128 version3.bin", 0x4000, 0x4000, CRC(3898d1a8) SHA1(acd3d7695a0fe9faa5e4315032c65e131d24a3ce) )
ROM_LOAD( "obj 3 pos h4 27128 version3.bin", 0x8000, 0x4000, CRC(304e2145) SHA1(d4eb49b5502872718d64e53f02acd2150f6bf713) )
ROM_REGION( 0x300, "proms", 0 ) // color PROMs
ROM_LOAD( "prom pos a9 n82s129", 0x0200, 0x100, CRC(8df9cefe) SHA1(86320eb8135932d79c4478929b9fd90ffba55712) )
ROM_LOAD( "prom pos a10 n82s129", 0x0100, 0x100, CRC(3c834094) SHA1(4d681431376a8ed071566d74d4accc737bf965dd) )
ROM_LOAD( "prom pos a11 n82s129", 0x0000, 0x100, CRC(339afa95) SHA1(ff4ff712960f41c26419a681e8dcceaeef75d2e3) )
ROM_REGION( 0x800, "proms2", 0 ) // look-up tables
ROM_LOAD( "prom pos e5 n82s131", 0x0000, 0x200, CRC(0024b5dd) SHA1(7d623f8e8964336d643820850cef0fb641e52e22) )
ROM_LOAD( "prom pos c7 n82s129", 0x0200, 0x100, CRC(9072d259) SHA1(9679fa01372d14a866836c9193204ff6e33cf67c) )
ROM_LOAD( "prom pos e4 n82s131", 0x0400, 0x200, CRC(307aa2cf) SHA1(839eccf1d34adaf9a5006bfb30e3524bc19a9b41) )
ROM_LOAD( "prom pos c8 n82s129", 0x0600, 0x100, CRC(351e1ef8) SHA1(530c9012ff5abda1c4ba9787ca999ca1ae1a893d) )
ROM_END
} // anonymous namespace
GAME( 1985, sub, 0, sub, sub, sub_state, empty_init, ROT270, "Sigma Enterprises Inc.", "Submarine (Sigma)", MACHINE_SUPPORTS_SAVE )