summaryrefslogtreecommitdiffstatshomepage
path: root/trunk/src/mame/drivers/citycon.c
diff options
context:
space:
mode:
Diffstat (limited to 'trunk/src/mame/drivers/citycon.c')
-rw-r--r--trunk/src/mame/drivers/citycon.c370
1 files changed, 370 insertions, 0 deletions
diff --git a/trunk/src/mame/drivers/citycon.c b/trunk/src/mame/drivers/citycon.c
new file mode 100644
index 00000000000..20ce1157916
--- /dev/null
+++ b/trunk/src/mame/drivers/citycon.c
@@ -0,0 +1,370 @@
+/***************************************************************************
+
+City Connection (c) 1985 Jaleco
+
+2008-07
+Dip locations added from dip listing at crazykong.com
+
+***************************************************************************/
+
+#include "emu.h"
+#include "cpu/m6809/m6809.h"
+#include "sound/ay8910.h"
+#include "sound/2203intf.h"
+#include "includes/citycon.h"
+
+
+static READ8_HANDLER( citycon_in_r )
+{
+ return input_port_read(space->machine(), flip_screen_get(space->machine()) ? "P2" : "P1");
+}
+
+static READ8_HANDLER( citycon_irq_ack_r )
+{
+ citycon_state *state = space->machine().driver_data<citycon_state>();
+ device_set_input_line(state->m_maincpu, 0, CLEAR_LINE);
+
+ return 0;
+}
+
+static ADDRESS_MAP_START( citycon_map, AS_PROGRAM, 8 )
+ AM_RANGE(0x0000, 0x0fff) AM_RAM
+ AM_RANGE(0x1000, 0x1fff) AM_RAM_WRITE(citycon_videoram_w) AM_BASE_MEMBER(citycon_state, m_videoram)
+ AM_RANGE(0x2000, 0x20ff) AM_RAM_WRITE(citycon_linecolor_w) AM_BASE_MEMBER(citycon_state, m_linecolor)
+ AM_RANGE(0x2800, 0x28ff) AM_RAM AM_BASE_SIZE_MEMBER(citycon_state, m_spriteram, m_spriteram_size)
+ AM_RANGE(0x2800, 0x2fff) AM_NOP //0x2900-0x2fff cleared at post but unused
+ AM_RANGE(0x3000, 0x3000) AM_READWRITE(citycon_in_r, citycon_background_w) /* player 1 & 2 inputs multiplexed */
+ AM_RANGE(0x3001, 0x3001) AM_READ_PORT("DSW1") AM_WRITE(soundlatch_w)
+ AM_RANGE(0x3002, 0x3002) AM_READ_PORT("DSW2") AM_WRITE(soundlatch2_w)
+ AM_RANGE(0x3004, 0x3005) AM_READNOP AM_WRITEONLY AM_BASE_MEMBER(citycon_state, m_scroll)
+ AM_RANGE(0x3007, 0x3007) AM_READ(citycon_irq_ack_r)
+ AM_RANGE(0x3800, 0x3cff) AM_RAM_WRITE(paletteram_RRRRGGGGBBBBxxxx_be_w) AM_BASE_GENERIC(paletteram)
+ AM_RANGE(0x4000, 0xffff) AM_ROM
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( sound_map, AS_PROGRAM, 8 )
+ AM_RANGE(0x0000, 0x0fff) AM_RAM
+ AM_RANGE(0x4000, 0x4001) AM_DEVWRITE("aysnd", ay8910_address_data_w)
+// AM_RANGE(0x4002, 0x4002) AM_DEVREAD("aysnd", ay8910_r) /* ?? */
+ AM_RANGE(0x6000, 0x6001) AM_DEVREADWRITE("ymsnd", ym2203_r, ym2203_w)
+ AM_RANGE(0x8000, 0xffff) AM_ROM
+ADDRESS_MAP_END
+
+
+
+static INPUT_PORTS_START( citycon )
+ PORT_START("P1")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 )
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START1 )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START2 )
+
+ PORT_START("P2")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_COCKTAIL
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_COCKTAIL
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_COCKTAIL
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_COCKTAIL
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_COCKTAIL
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("DSW1")
+ PORT_DIPNAME( 0x03, 0x00, DEF_STR( Lives ) ) PORT_DIPLOCATION("SW1:1,2")
+ PORT_DIPSETTING( 0x00, "3" )
+ PORT_DIPSETTING( 0x01, "4" )
+ PORT_DIPSETTING( 0x02, "5" )
+ PORT_DIPSETTING( 0x03, "Infinite (Cheat)")
+ PORT_DIPUNKNOWN_DIPLOC( 0x04, 0x00, "SW1:3" )
+ PORT_DIPUNKNOWN_DIPLOC( 0x08, 0x00, "SW1:4" )
+ PORT_DIPUNKNOWN_DIPLOC( 0x10, 0x00, "SW1:5" )
+ PORT_DIPNAME( 0x20, 0x00, DEF_STR( Demo_Sounds ) ) PORT_DIPLOCATION("SW1:6")
+ PORT_DIPSETTING( 0x20, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+ PORT_DIPNAME( 0x40, 0x00, DEF_STR( Cabinet ) ) PORT_DIPLOCATION("SW1:7")
+ PORT_DIPSETTING( 0x00, DEF_STR( Upright ) )
+ PORT_DIPSETTING( 0x40, DEF_STR( Cocktail ) )
+ /* the coin input must stay low for exactly 2 frames to be consistently recognized. */
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_IMPULSE(2)
+
+ PORT_START("DSW2")
+ PORT_DIPNAME( 0x07, 0x00, DEF_STR( Coinage ) ) PORT_DIPLOCATION("SW2:1,2,3")
+ PORT_DIPSETTING( 0x07, DEF_STR( 5C_1C ) )
+ PORT_DIPSETTING( 0x06, DEF_STR( 4C_1C ) )
+ PORT_DIPSETTING( 0x05, DEF_STR( 3C_1C ) )
+ PORT_DIPSETTING( 0x04, DEF_STR( 2C_1C ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( 1C_1C ) )
+ PORT_DIPSETTING( 0x01, DEF_STR( 1C_2C ) )
+ PORT_DIPSETTING( 0x02, DEF_STR( 1C_3C ) )
+ PORT_DIPSETTING( 0x03, DEF_STR( 1C_4C ) )
+ PORT_DIPNAME( 0x08, 0x00, DEF_STR( Difficulty ) ) PORT_DIPLOCATION("SW2:4")
+ PORT_DIPSETTING( 0x00, DEF_STR( Easy ) )
+ PORT_DIPSETTING( 0x08, DEF_STR( Hard ) )
+ PORT_DIPUNKNOWN_DIPLOC( 0x10, 0x00, "SW2:5" )
+ PORT_DIPUNKNOWN_DIPLOC( 0x20, 0x00, "SW2:6" )
+ PORT_DIPUNKNOWN_DIPLOC( 0x40, 0x00, "SW2:7" )
+ /* According to manual this is Flip Screen setting */
+// PORT_DIPNAME( 0x80, 0x80, DEF_STR( Flip Screen ) ) PORT_DIPLOCATION("SW2:8")
+// PORT_DIPSETTING( 0x80, DEF_STR( Off ) )
+// PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+ PORT_DIPUNKNOWN_DIPLOC( 0x80, 0x80, "SW2:8" )
+INPUT_PORTS_END
+
+
+
+static const gfx_layout charlayout =
+{
+ 8,8,
+ RGN_FRAC(1,2),
+ 5,
+ { 16, 12, 8, 4, 0 },
+ { 0, 1, 2, 3, RGN_FRAC(1,2)+0, RGN_FRAC(1,2)+1, RGN_FRAC(1,2)+2, RGN_FRAC(1,2)+3 },
+ { 0*24, 1*24, 2*24, 3*24, 4*24, 5*24, 6*24, 7*24 },
+ 24*8
+};
+
+static const gfx_layout tilelayout =
+{
+ 8,8, /* 8*8 characters */
+ 256, /* 256 characters */
+ 4, /* 4 bits per pixel */
+ { 4, 0, 0xc000*8+4, 0xc000*8+0 },
+ { 0, 1, 2, 3, 256*8*8+0, 256*8*8+1, 256*8*8+2, 256*8*8+3 },
+ { 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 =
+{
+ 8,16, /* 8*16 sprites */
+ 128, /* 128 sprites */
+ 4, /* 4 bits per pixel */
+ { 4, 0, 0x2000*8+4, 0x2000*8+0 },
+ { 0, 1, 2, 3, 128*16*8+0, 128*16*8+1, 128*16*8+2, 128*16*8+3 },
+ { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8,
+ 8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 },
+ 16*8 /* every sprite takes 16 consecutive bytes */
+};
+
+
+static GFXDECODE_START( citycon )
+// GFXDECODE_ENTRY( "gfx1", 0x00000, charlayout, 512, 32 ) /* colors 512-639 */
+ GFXDECODE_ENTRY( "gfx1", 0x00000, charlayout, 640, 32 ) /* colors 512-639 */
+ GFXDECODE_ENTRY( "gfx2", 0x00000, spritelayout, 0, 16 ) /* colors 0-255 */
+ GFXDECODE_ENTRY( "gfx2", 0x01000, spritelayout, 0, 16 )
+ GFXDECODE_ENTRY( "gfx3", 0x00000, tilelayout, 256, 16 ) /* colors 256-511 */
+ GFXDECODE_ENTRY( "gfx3", 0x01000, tilelayout, 256, 16 )
+ GFXDECODE_ENTRY( "gfx3", 0x02000, tilelayout, 256, 16 )
+ GFXDECODE_ENTRY( "gfx3", 0x03000, tilelayout, 256, 16 )
+ GFXDECODE_ENTRY( "gfx3", 0x04000, tilelayout, 256, 16 )
+ GFXDECODE_ENTRY( "gfx3", 0x05000, tilelayout, 256, 16 )
+ GFXDECODE_ENTRY( "gfx3", 0x06000, tilelayout, 256, 16 )
+ GFXDECODE_ENTRY( "gfx3", 0x07000, tilelayout, 256, 16 )
+ GFXDECODE_ENTRY( "gfx3", 0x08000, tilelayout, 256, 16 )
+ GFXDECODE_ENTRY( "gfx3", 0x09000, tilelayout, 256, 16 )
+ GFXDECODE_ENTRY( "gfx3", 0x0a000, tilelayout, 256, 16 )
+ GFXDECODE_ENTRY( "gfx3", 0x0b000, tilelayout, 256, 16 )
+GFXDECODE_END
+
+
+
+static const ym2203_interface ym2203_config =
+{
+ {
+ AY8910_LEGACY_OUTPUT,
+ AY8910_DEFAULT_LOADS,
+ DEVCB_MEMORY_HANDLER("audiocpu", PROGRAM, soundlatch_r),
+ DEVCB_MEMORY_HANDLER("audiocpu", PROGRAM, soundlatch2_r),
+ DEVCB_NULL,
+ DEVCB_NULL
+ },
+ NULL
+};
+
+
+
+static MACHINE_START( citycon )
+{
+ citycon_state *state = machine.driver_data<citycon_state>();
+
+ state->m_maincpu = machine.device("maincpu");
+
+ state->save_item(NAME(state->m_bg_image));
+}
+
+static MACHINE_RESET( citycon )
+{
+ citycon_state *state = machine.driver_data<citycon_state>();
+
+ state->m_bg_image = 0;
+}
+
+
+static MACHINE_CONFIG_START( citycon, citycon_state )
+
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu", M6809, 2048000) /* 2.048 MHz ??? */
+ MCFG_CPU_PROGRAM_MAP(citycon_map)
+ MCFG_CPU_VBLANK_INT("screen", irq0_line_assert)
+
+ MCFG_CPU_ADD("audiocpu", M6809, 640000) /* 0.640 MHz ??? */
+ MCFG_CPU_PROGRAM_MAP(sound_map)
+// MCFG_CPU_VBLANK_INT("screen", irq0_line_hold) //actually unused, probably it was during development
+
+ MCFG_MACHINE_START(citycon)
+ MCFG_MACHINE_RESET(citycon)
+
+ /* 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(1*8, 31*8-1, 2*8, 30*8-1)
+ MCFG_SCREEN_UPDATE(citycon)
+
+ MCFG_GFXDECODE(citycon)
+ MCFG_PALETTE_LENGTH(640+1024) /* 640 real palette + 1024 virtual palette */
+ MCFG_PALETTE_INIT(all_black) /* guess */
+
+ MCFG_VIDEO_START(citycon)
+
+ /* sound hardware */
+ MCFG_SPEAKER_STANDARD_MONO("mono")
+
+ MCFG_SOUND_ADD("aysnd", AY8910, 1250000)
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.40)
+
+ MCFG_SOUND_ADD("ymsnd", YM2203, 1250000)
+ MCFG_SOUND_CONFIG(ym2203_config)
+ MCFG_SOUND_ROUTE(0, "mono", 0.40)
+ MCFG_SOUND_ROUTE(1, "mono", 0.40)
+ MCFG_SOUND_ROUTE(2, "mono", 0.40)
+ MCFG_SOUND_ROUTE(3, "mono", 0.20)
+MACHINE_CONFIG_END
+
+
+
+/***************************************************************************
+
+ Game driver(s)
+
+***************************************************************************/
+
+ROM_START( citycon )
+ ROM_REGION( 0x10000, "maincpu", 0 )
+ ROM_LOAD( "c10", 0x4000, 0x4000, CRC(ae88b53c) SHA1(dd12310bd9c9b93462446e8e0a1c853506bf3aa1) )
+ ROM_LOAD( "c11", 0x8000, 0x8000, CRC(139eb1aa) SHA1(c570e8ca1499f7ea61938e78c32c1cc3050ca2b7) )
+
+ ROM_REGION( 0x10000, "audiocpu", 0 )
+ ROM_LOAD( "c1", 0x8000, 0x8000, CRC(1fad7589) SHA1(2e626bbbab8cffe11ee7de3e56aa1871c29d5fa9) )
+
+ ROM_REGION( 0x03000, "gfx1", 0 )
+ ROM_LOAD( "c4", 0x00000, 0x2000, CRC(a6b32fc6) SHA1(d99d5a527440e9a91525c1084b95b213e3b760ec) ) /* Characters */
+
+ ROM_REGION( 0x04000, "gfx2", 0 )
+ ROM_LOAD( "c12", 0x00000, 0x2000, CRC(08eaaccd) SHA1(a970381e3ba22bcdea6df2d31cd8a10c4b2bc413) ) /* Sprites */
+ ROM_LOAD( "c13", 0x02000, 0x2000, CRC(1819aafb) SHA1(8a5ffcd8866e09c5568879257384767d61796111) )
+
+ ROM_REGION( 0x18000, "gfx3", 0 )
+ ROM_LOAD( "c9", 0x00000, 0x8000, CRC(8aeb47e6) SHA1(bb09dbe6b37e1bd02abf3024ac4d954c8f0e70f2) ) /* Background tiles */
+ ROM_LOAD( "c8", 0x08000, 0x4000, CRC(0d7a1eeb) SHA1(60b8d4124ce857a248d3c41fdb050f11be58549f) )
+ ROM_LOAD( "c6", 0x0c000, 0x8000, CRC(2246fe9d) SHA1(f7f8708d499bcbd1a583e1092b54425ad1105f94) )
+ ROM_LOAD( "c7", 0x14000, 0x4000, CRC(e8b97de9) SHA1(f4d1b7075f47ab4522c36281b97eaa02fe383814) )
+
+ ROM_REGION( 0xe000, "gfx4", 0 ) /* background tilemaps */
+ ROM_LOAD( "c2", 0x0000, 0x8000, CRC(f2da4f23) SHA1(5ea1a51c3ac283796f7eafb6719d88356767340d) ) /* background maps */
+ ROM_LOAD( "c3", 0x8000, 0x4000, CRC(7ef3ac1b) SHA1(8a0497c4e4733f9c50d576f632210b82497a5e1c) )
+ ROM_LOAD( "c5", 0xc000, 0x2000, CRC(c03d8b1b) SHA1(641c1eba334d36ea64b9293a20320b31c7c88858) ) /* color codes for the background */
+ROM_END
+
+ROM_START( citycona )
+ ROM_REGION( 0x10000, "maincpu", 0 )
+ ROM_LOAD( "c10", 0x4000, 0x4000, CRC(ae88b53c) SHA1(dd12310bd9c9b93462446e8e0a1c853506bf3aa1) )
+ ROM_LOAD( "c11b", 0x8000, 0x8000, CRC(d64af468) SHA1(5bb3541af3ce632e8eca313231205713d72fb9dc) )
+
+ ROM_REGION( 0x10000, "audiocpu", 0 )
+ ROM_LOAD( "c1", 0x8000, 0x8000, CRC(1fad7589) SHA1(2e626bbbab8cffe11ee7de3e56aa1871c29d5fa9) )
+
+ ROM_REGION( 0x03000, "gfx1", 0 )
+ ROM_LOAD( "c4", 0x00000, 0x2000, CRC(a6b32fc6) SHA1(d99d5a527440e9a91525c1084b95b213e3b760ec) ) /* Characters */
+
+ ROM_REGION( 0x04000, "gfx2", 0 )
+ ROM_LOAD( "c12", 0x00000, 0x2000, CRC(08eaaccd) SHA1(a970381e3ba22bcdea6df2d31cd8a10c4b2bc413) ) /* Sprites */
+ ROM_LOAD( "c13", 0x02000, 0x2000, CRC(1819aafb) SHA1(8a5ffcd8866e09c5568879257384767d61796111) )
+
+ ROM_REGION( 0x18000, "gfx3", 0 )
+ ROM_LOAD( "c9", 0x00000, 0x8000, CRC(8aeb47e6) SHA1(bb09dbe6b37e1bd02abf3024ac4d954c8f0e70f2) ) /* Background tiles */
+ ROM_LOAD( "c8", 0x08000, 0x4000, CRC(0d7a1eeb) SHA1(60b8d4124ce857a248d3c41fdb050f11be58549f) )
+ ROM_LOAD( "c6", 0x0c000, 0x8000, CRC(2246fe9d) SHA1(f7f8708d499bcbd1a583e1092b54425ad1105f94) )
+ ROM_LOAD( "c7", 0x14000, 0x4000, CRC(e8b97de9) SHA1(f4d1b7075f47ab4522c36281b97eaa02fe383814) )
+
+ ROM_REGION( 0xe000, "gfx4", 0 ) /* background tilemaps */
+ ROM_LOAD( "c2", 0x0000, 0x8000, CRC(f2da4f23) SHA1(5ea1a51c3ac283796f7eafb6719d88356767340d) ) /* background maps */
+ ROM_LOAD( "c3", 0x8000, 0x4000, CRC(7ef3ac1b) SHA1(8a0497c4e4733f9c50d576f632210b82497a5e1c) )
+ ROM_LOAD( "c5", 0xc000, 0x2000, CRC(c03d8b1b) SHA1(641c1eba334d36ea64b9293a20320b31c7c88858) ) /* color codes for the background */
+ROM_END
+
+ROM_START( cruisin )
+ ROM_REGION( 0x10000, "maincpu", 0 )
+ ROM_LOAD( "cr10", 0x4000, 0x4000, CRC(cc7c52f3) SHA1(69d76f146fb1dac62c6def3a4269012b3880f03b) )
+ ROM_LOAD( "cr11", 0x8000, 0x8000, CRC(5422f276) SHA1(d384fc4f853fe79b73e939a8fc7b7af780659c5e) )
+
+ ROM_REGION( 0x10000, "audiocpu", 0 )
+ ROM_LOAD( "c1", 0x8000, 0x8000, CRC(1fad7589) SHA1(2e626bbbab8cffe11ee7de3e56aa1871c29d5fa9) )
+
+ ROM_REGION( 0x03000, "gfx1", 0 )
+ ROM_LOAD( "cr4", 0x00000, 0x2000, CRC(8cd0308e) SHA1(7303b9e074bda557d64b39e04cef0f965a756be6) ) /* Characters */
+
+ ROM_REGION( 0x04000, "gfx2", 0 )
+ ROM_LOAD( "c12", 0x00000, 0x2000, CRC(08eaaccd) SHA1(a970381e3ba22bcdea6df2d31cd8a10c4b2bc413) ) /* Sprites */
+ ROM_LOAD( "c13", 0x02000, 0x2000, CRC(1819aafb) SHA1(8a5ffcd8866e09c5568879257384767d61796111) )
+
+ ROM_REGION( 0x18000, "gfx3", 0 )
+ ROM_LOAD( "c9", 0x00000, 0x8000, CRC(8aeb47e6) SHA1(bb09dbe6b37e1bd02abf3024ac4d954c8f0e70f2) ) /* Background tiles */
+ ROM_LOAD( "c8", 0x08000, 0x4000, CRC(0d7a1eeb) SHA1(60b8d4124ce857a248d3c41fdb050f11be58549f) )
+ ROM_LOAD( "c6", 0x0c000, 0x8000, CRC(2246fe9d) SHA1(f7f8708d499bcbd1a583e1092b54425ad1105f94) )
+ ROM_LOAD( "c7", 0x14000, 0x4000, CRC(e8b97de9) SHA1(f4d1b7075f47ab4522c36281b97eaa02fe383814) )
+
+ ROM_REGION( 0xe000, "gfx4", 0 ) /* background tilemaps */
+ ROM_LOAD( "c2", 0x0000, 0x8000, CRC(f2da4f23) SHA1(5ea1a51c3ac283796f7eafb6719d88356767340d) ) /* background maps */
+ ROM_LOAD( "c3", 0x8000, 0x4000, CRC(7ef3ac1b) SHA1(8a0497c4e4733f9c50d576f632210b82497a5e1c) )
+ ROM_LOAD( "c5", 0xc000, 0x2000, CRC(c03d8b1b) SHA1(641c1eba334d36ea64b9293a20320b31c7c88858) ) /* color codes for the background */
+ROM_END
+
+
+
+static DRIVER_INIT( citycon )
+{
+ UINT8 *rom = machine.region("gfx1")->base();
+ int i;
+
+ /*
+ City Connection controls the text color code for each _scanline_, not
+ for each character as happens in most games. To handle that conveniently,
+ I convert the 2bpp char data into 5bpp, and create a virtual palette so
+ characters can still be drawn in one pass.
+ */
+ for (i = 0x0fff; i >= 0; i--)
+ {
+ int mask;
+
+ rom[3 * i] = rom[i];
+ rom[3 * i + 1] = 0;
+ rom[3 * i + 2] = 0;
+ mask = rom[i] | (rom[i] << 4) | (rom[i] >> 4);
+ if (i & 0x01) rom[3 * i + 1] |= mask & 0xf0;
+ if (i & 0x02) rom[3 * i + 1] |= mask & 0x0f;
+ if (i & 0x04) rom[3 * i + 2] |= mask & 0xf0;
+ }
+}
+
+
+
+GAME( 1985, citycon, 0, citycon, citycon, citycon, ROT0, "Jaleco", "City Connection (set 1)", GAME_SUPPORTS_SAVE )
+GAME( 1985, citycona, citycon, citycon, citycon, citycon, ROT0, "Jaleco", "City Connection (set 2)", GAME_SUPPORTS_SAVE )
+GAME( 1985, cruisin, citycon, citycon, citycon, citycon, ROT0, "Jaleco (Kitkorp license)", "Cruisin", GAME_SUPPORTS_SAVE )