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Diffstat (limited to 'src/mame/drivers/mermaid.c')
-rw-r--r--src/mame/drivers/mermaid.c393
1 files changed, 393 insertions, 0 deletions
diff --git a/src/mame/drivers/mermaid.c b/src/mame/drivers/mermaid.c
new file mode 100644
index 00000000000..dbfb05f676f
--- /dev/null
+++ b/src/mame/drivers/mermaid.c
@@ -0,0 +1,393 @@
+/***************************************************************************
+
+ Mermaid
+ Sanritsu
+
+ driver by Zsolt Vasvari
+
+ Games supported:
+ * Mermaid
+ * Rougien
+
+ Known issues:
+ * Hardware collision detection is not implemented.
+ * Are the stars really supposed to go up in Rougien?
+
+
+Yachtsman
+Esco/Sanritsu, 1982
+
+PCB Layout
+----------
+
+
+Lower PCB
+
+C1-0111
+|--------------------------------------------------------------|
+| |
+| col_a.96 RV1 |
+| |
+| RV2 |
+| 2016 col_b.95 HD10124 HD10124 |
+| |
+|2114 |
+|2114 merv_2.26 2114 mera-0.79 HD10124 HD10124 6116 |
+| |
+| 2114 mera-2.78 6116 |
+| |
+| merb-0.77 |
+| |
+| merb-2.76 |
+| |
+| |
+| 24.576MHz HD10124 HD10124 |
+| |
+| HD10124 |
+| |
+|--------------------------------------------------------------|
+
+
+
+Top Board
+
+C2-0149
+|------------------------------------------|
+|Z80 mer-10.24 555 RV4 DSW1(8) |
+| |
+| mer-9.23 |
+| |
+| mer-8.22 |
+| |-|
+| 2114 mer-7.21 AY-3-8910 |
+| |
+| 2114 mer-6.20 |
+| |
+| 2114 mer-5.19 |
+| |
+| 2114 mer-4.18 mervce.39 |
+| |
+| mer-3.17 AY-3-8910 |
+| |-|
+| mer-2.16 RV3 |
+| |
+| mer-1.15 |
+|------------------------------------------|
+
+Notes:
+ RV1/2 : Potentiometers
+ RV3/4 : Potentiometers
+ Z80 Clock: 3.072MHz
+ Vsync: 60Hz
+ HSync: 15.24kHz
+
+***************************************************************************/
+
+#include "driver.h"
+#include "sound/ay8910.h"
+
+extern UINT8* mermaid_videoram2;
+extern UINT8* mermaid_bg_scrollram;
+extern UINT8* mermaid_fg_scrollram;
+
+extern WRITE8_HANDLER( mermaid_videoram2_w );
+extern WRITE8_HANDLER( mermaid_videoram_w );
+extern WRITE8_HANDLER( mermaid_colorram_w );
+extern WRITE8_HANDLER( mermaid_flip_screen_x_w );
+extern WRITE8_HANDLER( mermaid_flip_screen_y_w );
+extern WRITE8_HANDLER( mermaid_bg_scroll_w );
+extern WRITE8_HANDLER( mermaid_fg_scroll_w );
+extern WRITE8_HANDLER( rougien_gfxbankswitch1_w );
+extern WRITE8_HANDLER( rougien_gfxbankswitch2_w );
+extern READ8_HANDLER( mermaid_collision_r );
+
+extern PALETTE_INIT( mermaid );
+extern VIDEO_START( mermaid );
+extern VIDEO_UPDATE( mermaid );
+
+/* Read/Write Handlers */
+
+static UINT8 *mermaid_AY8910_enable;
+
+static WRITE8_HANDLER( mermaid_AY8910_write_port_w )
+{
+ if (mermaid_AY8910_enable[0]) AY8910_write_port_0_w(offset, data);
+ if (mermaid_AY8910_enable[1]) AY8910_write_port_1_w(offset, data);
+}
+
+static WRITE8_HANDLER( mermaid_AY8910_control_port_w )
+{
+ if (mermaid_AY8910_enable[0]) AY8910_control_port_0_w(offset, data);
+ if (mermaid_AY8910_enable[1]) AY8910_control_port_1_w(offset, data);
+}
+
+/* Memory Map */
+
+static ADDRESS_MAP_START( mermaid_map, ADDRESS_SPACE_PROGRAM, 8 )
+ AM_RANGE(0x0000, 0x9fff) AM_ROM
+ AM_RANGE(0xc000, 0xc7ff) AM_RAM
+ AM_RANGE(0xc800, 0xcbff) AM_RAM AM_WRITE(mermaid_videoram2_w) AM_BASE(&mermaid_videoram2)
+ AM_RANGE(0xd000, 0xd3ff) AM_RAM AM_WRITE(mermaid_videoram_w) AM_BASE(&videoram)
+ AM_RANGE(0xd800, 0xd81f) AM_RAM AM_WRITE(mermaid_bg_scroll_w) AM_BASE(&mermaid_bg_scrollram)
+ AM_RANGE(0xd840, 0xd85f) AM_RAM AM_WRITE(mermaid_fg_scroll_w) AM_BASE(&mermaid_fg_scrollram)
+ AM_RANGE(0xd880, 0xd8bf) AM_RAM AM_BASE(&spriteram) AM_SIZE(&spriteram_size)
+ AM_RANGE(0xdc00, 0xdfff) AM_RAM AM_WRITE(mermaid_colorram_w) AM_BASE(&colorram)
+ AM_RANGE(0xe000, 0xe000) AM_READ(input_port_0_r)
+ AM_RANGE(0xe000, 0xe001) AM_RAM AM_BASE(&mermaid_AY8910_enable)
+ AM_RANGE(0xe002, 0xe002) AM_WRITENOP // ???
+ AM_RANGE(0xe003, 0xe003) AM_WRITENOP // ???
+ AM_RANGE(0xe004, 0xe004) AM_WRITENOP // ???
+ AM_RANGE(0xe005, 0xe005) AM_WRITE(mermaid_flip_screen_x_w)
+ AM_RANGE(0xe006, 0xe006) AM_WRITE(mermaid_flip_screen_y_w)
+ AM_RANGE(0xe007, 0xe007) AM_WRITE(interrupt_enable_w)
+ AM_RANGE(0xe800, 0xe800) AM_READ(input_port_1_r) AM_WRITENOP // ???
+ AM_RANGE(0xe801, 0xe801) AM_WRITENOP // ???
+ AM_RANGE(0xe802, 0xe802) AM_WRITENOP // ???
+ AM_RANGE(0xe803, 0xe803) AM_WRITENOP // ???
+ AM_RANGE(0xe804, 0xe804) AM_WRITE(rougien_gfxbankswitch1_w)
+ AM_RANGE(0xe805, 0xe805) AM_WRITE(rougien_gfxbankswitch2_w)
+ AM_RANGE(0xe807, 0xe807) AM_WRITENOP // ???
+ AM_RANGE(0xf000, 0xf000) AM_READ(input_port_2_r)
+ AM_RANGE(0xf800, 0xf800) AM_READ(mermaid_collision_r)
+ AM_RANGE(0xf802, 0xf802) AM_WRITENOP // ???
+ AM_RANGE(0xf806, 0xf806) AM_WRITE(mermaid_AY8910_write_port_w)
+ AM_RANGE(0xf807, 0xf807) AM_WRITE(mermaid_AY8910_control_port_w)
+ADDRESS_MAP_END
+
+/* Input Ports */
+
+static INPUT_PORTS_START( mermaid )
+ PORT_START_TAG("DSW")
+ PORT_DIPNAME( 0x01, 0x00, DEF_STR( Cabinet ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( Upright ) )
+ PORT_DIPSETTING( 0x01, DEF_STR( Cocktail ) )
+ 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( Bonus_Life ) )
+ PORT_DIPSETTING( 0x00, "20K" )
+ PORT_DIPSETTING( 0x04, "30K" )
+ PORT_DIPNAME( 0x08, 0x08, DEF_STR( Allow_Continue ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( No ) )
+ PORT_DIPSETTING( 0x08, DEF_STR( Yes ) )
+ PORT_DIPNAME( 0x30, 0x00, DEF_STR( Lives ) )
+ PORT_DIPSETTING( 0x00, "3" )
+ PORT_DIPSETTING( 0x10, "4" )
+ PORT_DIPSETTING( 0x20, "5" )
+ PORT_DIPSETTING( 0x30, "6" )
+ PORT_DIPNAME( 0xc0, 0x00, DEF_STR( Coinage ) )
+ PORT_DIPSETTING( 0xc0, DEF_STR( 2C_1C ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( 1C_1C ) )
+ PORT_DIPSETTING( 0x40, DEF_STR( 1C_2C ))
+ PORT_DIPSETTING( 0x80, DEF_STR( 1C_3C ) )
+
+ PORT_START_TAG("IN0")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_8WAY
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_8WAY
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_8WAY
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_8WAY
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 )
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_START1 )
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_START2 )
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNKNOWN )
+
+ PORT_START_TAG("IN1")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_8WAY PORT_COCKTAIL
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_COCKTAIL
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_COCKTAIL
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_COCKTAIL
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_COCKTAIL
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNKNOWN )
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_COIN1 )
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_COIN2 )
+INPUT_PORTS_END
+
+/* Graphics Layouts */
+
+static const gfx_layout background_charlayout =
+{
+ 8, 8, /* 8*8 chars */
+ RGN_FRAC(1,1), /* 256 characters */
+ 1, /* 1 bit per pixel */
+ { 0 }, /* single 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 foreground_charlayout =
+{
+ 8, 8, /* 8*8 chars */
+ RGN_FRAC(1,2), /* 1024 characters */
+ 2, /* 2 bits per pixel */
+ { 0, RGN_FRAC(1,2) }, /* the two bitplanes are separated */
+ { 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 spritelayout =
+{
+ 16, 16, /* 16*16 sprites */
+ RGN_FRAC(1,2), /* 256 sprites */
+ 2, /* 2 bits per pixel */
+ { 0, RGN_FRAC(1,2) }, /* the two bitplanes are separated */
+ { 0, 1, 2, 3, 4, 5, 6, 7,
+ 8*8+0, 8*8+1, 8*8+2, 8*8+3, 8*8+4, 8*8+5, 8*8+6, 8*8+7 },
+ { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8,
+ 16*8, 17*8, 18*8, 19*8, 20*8, 21*8, 22*8, 23*8 },
+ 32*8 /* every sprite takes 32 consecutive bytes */
+};
+
+/* Graphics Decode Information */
+
+static GFXDECODE_START( mermaid )
+ GFXDECODE_ENTRY( REGION_GFX1, 0, foreground_charlayout, 0, 16 )
+ GFXDECODE_ENTRY( REGION_GFX1, 0, spritelayout, 0, 16 )
+ GFXDECODE_ENTRY( REGION_GFX2, 0, background_charlayout, 4*16, 2 )
+GFXDECODE_END
+
+/* Sound Interface */
+
+/* Machine Driver */
+
+static MACHINE_DRIVER_START( mermaid )
+ // basic machine hardware
+ MDRV_CPU_ADD(Z80, 4000000) // ???
+ MDRV_CPU_PROGRAM_MAP(mermaid_map, 0)
+ MDRV_CPU_VBLANK_INT(nmi_line_pulse, 1)
+
+ MDRV_SCREEN_REFRESH_RATE(60)
+ MDRV_SCREEN_VBLANK_TIME(DEFAULT_REAL_60HZ_VBLANK_DURATION)
+
+ // video hardware
+ MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
+ MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
+ MDRV_SCREEN_SIZE(32*8, 32*8)
+ MDRV_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 2*8, 30*8-1)
+ MDRV_GFXDECODE(mermaid)
+ MDRV_PALETTE_LENGTH(4*16+1)
+ MDRV_COLORTABLE_LENGTH(4*16+2*2)
+
+ MDRV_PALETTE_INIT(mermaid)
+ MDRV_VIDEO_START(mermaid)
+ MDRV_VIDEO_UPDATE(mermaid)
+
+ // sound hardware
+ MDRV_SPEAKER_STANDARD_MONO("mono")
+
+ MDRV_SOUND_ADD(AY8910, 1500000)
+ MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
+
+ MDRV_SOUND_ADD(AY8910, 1500000)
+ MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
+MACHINE_DRIVER_END
+
+/* ROMs */
+
+ROM_START( mermaid )
+ ROM_REGION( 0x10000, REGION_CPU1, 0 ) // 64k for code
+ ROM_LOAD( "g960_32.15", 0x0000, 0x1000, CRC(8311f090) SHA1(c59485a712cf1cd384f03874c693b58e972fe4da) )
+ ROM_LOAD( "g960_33.16", 0x1000, 0x1000, CRC(9f274fc4) SHA1(4098e98c9d95f7e621de061925374154a23c5d35) )
+ ROM_LOAD( "g960_34.17", 0x2000, 0x1000, CRC(5f910179) SHA1(bcf1e24b7584d18f9e85a8b4aec6f03bb1034150) )
+ ROM_LOAD( "g960_35.18", 0x3000, 0x1000, CRC(db1868a1) SHA1(f5bb0b9895c5e2facc5ae9db9f1bed44e14d308a) )
+ ROM_LOAD( "g960_36.19", 0x4000, 0x1000, CRC(178a3567) SHA1(993479d9fadf1c4d3f44ce030f2d6197ecfceb9d) )
+ ROM_LOAD( "g960_37.20", 0x5000, 0x1000, CRC(7d602527) SHA1(1a888bd1829b9f12dd820c49785bea6bc8edab04) )
+ ROM_LOAD( "g960_38.21", 0x6000, 0x1000, CRC(bf9f623c) SHA1(48d3aebb01c01c51acaccd1a4582ab21e6ed1104) )
+ ROM_LOAD( "g960_39.22", 0x7000, 0x1000, CRC(df0db390) SHA1(b466cf1abbf0703d6fbacc86c65d254ef310ba27) )
+ ROM_LOAD( "g960_40.23", 0x8000, 0x1000, CRC(fb7aba3f) SHA1(fe6903c11363ed4c34b29226df58e833150cc525) )
+ ROM_LOAD( "g960_41.24", 0x9000, 0x1000, CRC(d022981d) SHA1(ab1659a933af4d49daeacd70072f6c1197181c20) )
+
+ ROM_REGION( 0x4000, REGION_GFX1, ROMREGION_DISPOSE )
+ ROM_LOAD( "g960_45.77", 0x0000, 0x1000, CRC(1f6b735e) SHA1(dd7ea4ef674f0495a87fc1929ea14852e8d8d338) )
+ ROM_LOAD( "g960_44.76", 0x1000, 0x1000, CRC(fd76074e) SHA1(673a214fc41b923191b4136c0cf39fc5efa970ba) )
+ ROM_LOAD( "g960_47.79", 0x2000, 0x1000, CRC(3b7d4ad0) SHA1(722483989c611b6396538dd3b357589262f366e3) )
+ ROM_LOAD( "g960_46.78", 0x3000, 0x1000, CRC(50c117cd) SHA1(45b4055497c785218e2aaaffa86d732912555821) )
+
+ ROM_REGION( 0x1000, REGION_GFX2, ROMREGION_DISPOSE )
+ ROM_LOAD( "g960_43.26", 0x0000, 0x1000, CRC(6f077417) SHA1(f2c20e03427a2f5a113c6a4cf95875b77a0ec418) )
+
+ ROM_REGION( 0x40, REGION_PROMS, 0 )
+ ROM_LOAD( "col_a.96", 0x0000, 0x0020, CRC(ef87bcd6) SHA1(00a5888ad028fabeb7369eed33be5cd49b6b7bb0) )
+ ROM_LOAD( "col_b.95", 0x0020, 0x0020, CRC(ca48abdd) SHA1(a864612c2c33acddfa9993ed10a1d63d2e3f145d) )
+
+ ROM_REGION( 0x1000, REGION_USER1, 0 ) // unknown
+ ROM_LOAD( "g960_42.39", 0x0000, 0x1000, CRC(287840bb) SHA1(9a1836f39f328b0c9672976d95a9ece45bb9e89f) )
+ROM_END
+
+ROM_START( rougien )
+ ROM_REGION( 0x10000, REGION_CPU1, 0 ) // 64k for code
+ ROM_LOAD( "rou-00.bin", 0x0000, 0x1000, CRC(14cd1108) SHA1(46657fa4d900936e2a71ad43702d2c43fef09efe) )
+ ROM_LOAD( "rou-01.bin", 0x1000, 0x1000, CRC(ee40670d) SHA1(7c31c3b693999bc1ae42b9f2de1a9883d3db535d) )
+ ROM_LOAD( "rou-02.bin", 0x2000, 0x1000, CRC(5e528f46) SHA1(6bad10bb72eab423b6478e8d5a41e92f0b72793c) )
+ ROM_LOAD( "rou-03.bin", 0x3000, 0x1000, CRC(d235a7e8) SHA1(0c0cbf81d3b379dc5d82c3541dd3b32ccad73046) )
+ ROM_LOAD( "rou-04.bin", 0x4000, 0x1000, CRC(7352bb66) SHA1(0bc41faf67d5305258909c9523461cdf8d10d9dc) )
+ ROM_LOAD( "rou-05.bin", 0x5000, 0x1000, CRC(af77444d) SHA1(d7c2b59fbaa7be813ed5dcd9d7babc19e0fec9fd) )
+ ROM_LOAD( "rou-06.bin", 0x6000, 0x1000, CRC(2c16c857) SHA1(f31189cf73635a1542a18193da85ed898c297768) )
+ ROM_LOAD( "rou-07.bin", 0x7000, 0x1000, CRC(fbf32f2e) SHA1(ab8a2bc8ee10e308e887b2bef2b92e1669aab888) )
+ ROM_LOAD( "rou-08.bin", 0x8000, 0x1000, CRC(bfac531c) SHA1(63e6bdd1ca2709ae733c84311df5833546f08663) )
+ ROM_LOAD( "rou-09.bin", 0x9000, 0x1000, CRC(af854340) SHA1(f2d5e1bb6b25d87ee03c21975f9c9976ae3652b1) )
+
+ ROM_REGION( 0xc000, REGION_GFX1, ROMREGION_DISPOSE )
+ ROM_LOAD( "rou-21.bin", 0x0000, 0x1000, CRC(36e4ba8c) SHA1(6c39de7d983019b280c54e03d4ca0fe2cef4ea90) )
+ ROM_LOAD( "rou-20.bin", 0x1000, 0x1000, CRC(c5dc1258) SHA1(20034c77f205684f9c868747988ab391456a2189) )
+ ROM_LOAD( "rou-23.bin", 0x2000, 0x1000, CRC(5974c848) SHA1(a3e5408aaee87afadea521115f78686f84832ab9) )
+ ROM_LOAD( "rou-22.bin", 0x3000, 0x1000, CRC(35811443) SHA1(3e0ec254a94730664a3d13dd10d87d2040c9c5e6) )
+ ROM_LOAD( "rou-25.bin", 0x4000, 0x1000, CRC(706d9864) SHA1(26d7e803670f791938a7e93bf3b68a94525c0458) )
+ ROM_LOAD( "rou-24.bin", 0x5000, 0x1000, CRC(56ceb0be) SHA1(a5475ce7d66e9f97da373d3fb694b536a257e78d) )
+ ROM_LOAD( "rou-27.bin", 0x6000, 0x1000, CRC(522fa2e0) SHA1(ce20c5e447f27cb147a62c1dd176d9dfa60f4c33) )
+ ROM_LOAD( "rou-26.bin", 0x7000, 0x1000, CRC(fbbc6339) SHA1(a4c7035fe61a267b53372a0504e7932e52ac4119) )
+ ROM_LOAD( "rou-29.bin", 0x8000, 0x1000, CRC(bf018a7e) SHA1(e608630ead16f01f9b186f622644ce2567f29057) )
+ ROM_LOAD( "rou-28.bin", 0x9000, 0x1000, CRC(33f160dc) SHA1(3fc3a31a37cc724c692080edc2e4fd8678e9a8c9) )
+ ROM_LOAD( "rou-31.bin", 0xa000, 0x1000, CRC(b2a6f058) SHA1(faba09b6fd80e1e20e79435b60ce89e7110ec98a) )
+ ROM_LOAD( "rou-30.bin", 0xb000, 0x1000, CRC(c75be223) SHA1(ca3fa46d9132a31b46e6e29a8b91acf7a380fd74) )
+
+ ROM_REGION( 0x1000, REGION_GFX2, ROMREGION_DISPOSE )
+ ROM_LOAD( "rou-43.bin", 0x0000, 0x1000, CRC(ee4b9de4) SHA1(878a86113435536545353f68864c3a034566c616) )
+
+ ROM_REGION( 0x40, REGION_PROMS, 0 )
+ ROM_LOAD( "prom_a.bin", 0x0000, 0x0020, CRC(49f619b9) SHA1(c936aaf79822628a2ffff169d236389bc2eef6a5) )
+ ROM_LOAD( "prom_b.bin", 0x0020, 0x0020, CRC(41ad4fc8) SHA1(a9d24586130f00cd350459635de5f4f7629e00b4) )
+
+ ROM_REGION( 0x3000, REGION_USER1, 0 ) // unknown
+ ROM_LOAD( "rou-40.bin", 0x0000, 0x1000, CRC(ab38b942) SHA1(9575f67e002c68d384122e05a12c6c0f21335825) )
+ ROM_LOAD( "rou-41.bin", 0x1000, 0x1000, CRC(59ed0d88) SHA1(7faf6ab01fa3c1c04c38d2ea27b27c47450876de) )
+ ROM_LOAD( "rou-42.bin", 0x2000, 0x1000, CRC(5ce13444) SHA1(e6da83190b26b094159a3a97deffd31d0d20a061) )
+ROM_END
+
+ROM_START( yachtmn )
+ ROM_REGION( 0x10000, REGION_CPU1, 0 ) // 64k for code
+ ROM_LOAD( "mer-1.15", 0x0000, 0x1000, CRC(a102b180) SHA1(f1f029797d09d89c98ffc96b1e57f3ab8e89f35a) )
+ ROM_LOAD( "mer-2.16", 0x1000, 0x1000, CRC(0f2ba7fc) SHA1(5eac8300eb755f5f3a88776dbc5cf7995d2f3c44) )
+ ROM_LOAD( "mer-3.17", 0x2000, 0x1000, CRC(46c22b6b) SHA1(3d6293cf99e9263e986a6046a0f08ee0416a2856) )
+ ROM_LOAD( "mer-4.18", 0x3000, 0x1000, CRC(0ec84a12) SHA1(4f2d1509785d659b7e66df0525cbbd3a500370e2) )
+ ROM_LOAD( "mer-5.19", 0x4000, 0x1000, CRC(315153d5) SHA1(c3fa4c1e59026e291ddbd448aede159af9827714) )
+ ROM_LOAD( "g960_37.20", 0x5000, 0x1000, CRC(7d602527) SHA1(1a888bd1829b9f12dd820c49785bea6bc8edab04) ) // mer-6.20
+ ROM_LOAD( "mer-7.21", 0x6000, 0x1000, CRC(20d56a6e) SHA1(b9867f073b38cbf6a98697fe6af6c4cb20d7f54b) )
+ ROM_LOAD( "g960_39.22", 0x7000, 0x1000, CRC(df0db390) SHA1(b466cf1abbf0703d6fbacc86c65d254ef310ba27) ) // mer-8.22
+ ROM_LOAD( "g960_40.23", 0x8000, 0x1000, CRC(fb7aba3f) SHA1(fe6903c11363ed4c34b29226df58e833150cc525) ) // mer-9.23
+ ROM_LOAD( "mer-10.24", 0x9000, 0x1000, CRC(04ca4f8c) SHA1(c7a437fabe3dd6968258f13e688bd6ed8500eb8e) )
+
+ ROM_REGION( 0x4000, REGION_GFX1, ROMREGION_DISPOSE )
+ ROM_LOAD( "g960_45.77", 0x0000, 0x1000, CRC(1f6b735e) SHA1(dd7ea4ef674f0495a87fc1929ea14852e8d8d338) ) // merb-0.77
+ ROM_LOAD( "g960_44.76", 0x1000, 0x1000, CRC(fd76074e) SHA1(673a214fc41b923191b4136c0cf39fc5efa970ba) ) // merb-2.76
+ ROM_LOAD( "mera-0.79", 0x2000, 0x1000, CRC(6e3e48c4) SHA1(810e140310e668343bc2052e6c9527c090e0aa3c) )
+ ROM_LOAD( "g960_46.78", 0x3000, 0x1000, CRC(50c117cd) SHA1(45b4055497c785218e2aaaffa86d732912555821) ) // mera-2.78
+
+ ROM_REGION( 0x1000, REGION_GFX2, ROMREGION_DISPOSE )
+ ROM_LOAD( "g960_43.26", 0x0000, 0x1000, CRC(6f077417) SHA1(f2c20e03427a2f5a113c6a4cf95875b77a0ec418) ) // merv_2.26
+
+ ROM_REGION( 0x40, REGION_PROMS, 0 )
+ ROM_LOAD( "col_a.96", 0x0000, 0x0020, CRC(ef87bcd6) SHA1(00a5888ad028fabeb7369eed33be5cd49b6b7bb0) ) // col_a.96
+ ROM_LOAD( "col_b.95", 0x0020, 0x0020, CRC(ca48abdd) SHA1(a864612c2c33acddfa9993ed10a1d63d2e3f145d) ) // col_b.95
+
+ ROM_REGION( 0x1000, REGION_USER1, 0 ) // unknown
+ ROM_LOAD( "g960_42.39", 0x0000, 0x1000, CRC(287840bb) SHA1(9a1836f39f328b0c9672976d95a9ece45bb9e89f) ) // mervce.39
+ROM_END
+
+
+/* Game Drivers */
+
+GAME( 1982, mermaid, 0, mermaid, mermaid, 0, ROT0, "[Sanritsu] Rock-Ola", "Mermaid", GAME_NOT_WORKING )
+GAME( 1982, yachtmn, mermaid, mermaid, mermaid, 0, ROT0, "[Sanritsu] Esco", "Yachtsman", GAME_NOT_WORKING )
+GAME( 1982, rougien, 0, mermaid, mermaid, 0, ROT0, "Sanritsu", "Rougien", 0 )