diff options
Diffstat (limited to 'src/mame/drivers/hexa.c')
-rw-r--r-- | src/mame/drivers/hexa.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/src/mame/drivers/hexa.c b/src/mame/drivers/hexa.c new file mode 100644 index 00000000000..9a8e2461baa --- /dev/null +++ b/src/mame/drivers/hexa.c @@ -0,0 +1,204 @@ +/**************************************************************************** + + This hardware is derived from Arkanoid's hardware. The 1986 date found in + the roms probably comes from Arkanoid. This is a Columns style game and + the original Columns wasn't released until 1990 and I find it hard to + believe that this would pre-date Columns. + +HEXA + +driver by Howie Cohen + +Memory map (prelim) +0000 7fff ROM +8000 bfff bank switch rom space?? +c000 c7ff RAM +e000 e7ff video ram +e800-efff unused RAM + +read: +d001 AY8910 read +f000 ??????? + +write: +d000 AY8910 control +d001 AY8910 write +d008 bit0/1 = flip screen x/y + bit 4 = ROM bank?? + bit 5 = char bank + other bits???????? +d010 watchdog reset, or IRQ acknowledge, or both +f000 ???????? + +*************************************************************************/ + +#include "driver.h" +#include "sound/ay8910.h" + + + +VIDEO_START( hexa ); +VIDEO_UPDATE( hexa ); +WRITE8_HANDLER( hexa_videoram_w ); +WRITE8_HANDLER( hexa_d008_w ); + + + +static ADDRESS_MAP_START( readmem, ADDRESS_SPACE_PROGRAM, 8 ) + AM_RANGE(0x0000, 0x7fff) AM_READ(MRA8_ROM) + AM_RANGE(0x8000, 0xbfff) AM_READ(MRA8_BANK1) + AM_RANGE(0xc000, 0xc7ff) AM_READ(MRA8_RAM) + AM_RANGE(0xd001, 0xd001) AM_READ(AY8910_read_port_0_r) + AM_RANGE(0xe000, 0xe7ff) AM_READ(MRA8_RAM) +ADDRESS_MAP_END + +static ADDRESS_MAP_START( writemem, ADDRESS_SPACE_PROGRAM, 8 ) + AM_RANGE(0x0000, 0xbfff) AM_WRITE(MWA8_ROM) + AM_RANGE(0xc000, 0xc7ff) AM_WRITE(MWA8_RAM) + AM_RANGE(0xd000, 0xd000) AM_WRITE(AY8910_control_port_0_w) + AM_RANGE(0xd001, 0xd001) AM_WRITE(AY8910_write_port_0_w) + AM_RANGE(0xd008, 0xd008) AM_WRITE(hexa_d008_w) + AM_RANGE(0xd010, 0xd010) AM_WRITE(watchdog_reset_w) /* or IRQ acknowledge, or both */ + AM_RANGE(0xe000, 0xe7ff) AM_WRITE(hexa_videoram_w) AM_BASE(&videoram) AM_SIZE(&videoram_size) +ADDRESS_MAP_END + + + +static INPUT_PORTS_START( hexa ) + PORT_START /* IN0 */ + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_4WAY + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_4WAY + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_4WAY + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_4WAY + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_START1 ) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN1 ) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON2 ) + + PORT_START /* DSW */ + PORT_DIPNAME( 0x03, 0x03, DEF_STR( Coinage ) ) + PORT_DIPSETTING( 0x00, DEF_STR( 3C_1C ) ) + PORT_DIPSETTING( 0x01, DEF_STR( 2C_1C ) ) + PORT_DIPSETTING( 0x03, DEF_STR( 1C_1C ) ) + PORT_DIPSETTING( 0x02, DEF_STR( 1C_2C ) ) + PORT_DIPNAME( 0x04, 0x00, "Naughty Pics" ) + PORT_DIPSETTING( 0x04, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x08, 0x08, DEF_STR( Flip_Screen ) ) + PORT_DIPSETTING( 0x08, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x30, 0x30, "Difficulty?" ) + PORT_DIPSETTING( 0x30, "Easy?" ) + PORT_DIPSETTING( 0x20, "Medium?" ) + PORT_DIPSETTING( 0x10, "Hard?" ) + PORT_DIPSETTING( 0x00, "Hardest?" ) + PORT_DIPNAME( 0x40, 0x40, "Pobys" ) + PORT_DIPSETTING( 0x40, "2" ) + PORT_DIPSETTING( 0x00, "4" ) + PORT_DIPNAME( 0x80, 0x80, DEF_STR( Demo_Sounds ) ) + PORT_DIPSETTING( 0x00, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x80, DEF_STR( On ) ) +INPUT_PORTS_END + + + +static const gfx_layout charlayout = +{ + 8,8, /* 8 by 8 */ + 4096, /* 4096 characters */ + 3, /* 3 bits per pixel */ + { 2*4096*8*8, 4096*8*8, 0 }, /* plane */ + { 0, 1, 2, 3, 4, 5, 6, 7 }, /* x bit */ + { 8*0, 8*1, 8*2, 8*3, 8*4, 8*5, 8*6, 8*7 }, /* y bit */ + 8*8 +}; + + + +static GFXDECODE_START( hexa ) + GFXDECODE_ENTRY( REGION_GFX1, 0x0000, charlayout, 0 , 32 ) +GFXDECODE_END + + + +static struct AY8910interface ay8910_interface = +{ + input_port_0_r, + input_port_1_r, +}; + + + +static MACHINE_DRIVER_START( hexa ) + + /* basic machine hardware */ + MDRV_CPU_ADD(Z80, 4000000) /* 4 MHz ??????? */ + MDRV_CPU_PROGRAM_MAP(readmem,writemem) + MDRV_CPU_VBLANK_INT(irq0_line_hold,1) + + MDRV_SCREEN_REFRESH_RATE(60) + MDRV_SCREEN_VBLANK_TIME(DEFAULT_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(hexa) + MDRV_PALETTE_LENGTH(256) + + MDRV_PALETTE_INIT(RRRR_GGGG_BBBB) + MDRV_VIDEO_START(hexa) + MDRV_VIDEO_UPDATE(hexa) + + /* sound hardware */ + MDRV_SPEAKER_STANDARD_MONO("mono") + MDRV_SOUND_ADD(AY8910, 1500000) + MDRV_SOUND_CONFIG(ay8910_interface) + MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50) +MACHINE_DRIVER_END + + +/*************************************************************************** + + Game driver(s) + +***************************************************************************/ + +ROM_START( hexa ) + ROM_REGION( 0x18000, REGION_CPU1, 0 ) /* 64k for code + 32k for banked ROM */ + ROM_LOAD( "hexa.20", 0x00000, 0x8000, CRC(98b00586) SHA1(3591a3b0486d720f0aaa9f0bf4be352cd0ffcbc7) ) + ROM_LOAD( "hexa.21", 0x10000, 0x8000, CRC(3d5d006c) SHA1(ad4eadab82024b122182eacb5a322cfd6e476a70) ) + + ROM_REGION( 0x18000, REGION_GFX1, ROMREGION_DISPOSE ) + ROM_LOAD( "hexa.17", 0x00000, 0x8000, CRC(f6911dd6) SHA1(b12ea27ecddd60820a32d4346afab0cc9d06fa57) ) + ROM_LOAD( "hexa.18", 0x08000, 0x8000, CRC(6e3d95d2) SHA1(6399b7b5d088ceda08fdea9cf650f6b405f038e7) ) + ROM_LOAD( "hexa.19", 0x10000, 0x8000, CRC(ffe97a31) SHA1(f16b5d2b9ace09bcbbfe3dfb73db7fa377d1af7f) ) + + ROM_REGION( 0x0300, REGION_PROMS, 0 ) + ROM_LOAD( "hexa.001", 0x0000, 0x0100, CRC(88a055b4) SHA1(eee86a7930d0a251f3e5c2134532cd1dede2026c) ) + ROM_LOAD( "hexa.003", 0x0100, 0x0100, CRC(3e9d4932) SHA1(9a336dba7134400312985b9902c77b4141105853) ) + ROM_LOAD( "hexa.002", 0x0200, 0x0100, CRC(ff15366c) SHA1(7feaf1c768bfe76432fb80991585e13d95960b34) ) +ROM_END + + + +static DRIVER_INIT( hexa ) +{ +#if 0 + UINT8 *RAM = memory_region(REGION_CPU1); + + + /* Hexa is not protected or anything, but it keeps writing 0x3f to register */ + /* 0x07 of the AY8910, to read the input ports. This causes clicks in the */ + /* music since the output channels are continuously disabled and reenabled. */ + /* To avoid that, we just NOP out the 0x3f write. */ + + RAM[0x0124] = 0x00; + RAM[0x0125] = 0x00; + RAM[0x0126] = 0x00; +#endif +} + + +GAME( 199?, hexa, 0, hexa, hexa, hexa, ROT0, "D. R. Korea", "Hexa", 0 ) |