/**************************************************************************** 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 ???????? ************************************************************************* main hardware consists of..... sub board with Z80 x2, 2 ROMs and a scratched 18 pin chip (probably a PIC) main board has.... 12MHz xtal ay3-8910 8 position DSW x1 ROMs x4 6116 SRAM x3 82S123 PROMs x3 *************************************************************************/ #include "driver.h" #include "cpu/z80/z80.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(SMH_ROM) AM_RANGE(0x8000, 0xbfff) AM_READ(SMH_BANK1) AM_RANGE(0xc000, 0xc7ff) AM_READ(SMH_RAM) AM_RANGE(0xd001, 0xd001) AM_DEVREAD("ay", ay8910_r) AM_RANGE(0xe000, 0xe7ff) AM_READ(SMH_RAM) ADDRESS_MAP_END static ADDRESS_MAP_START( writemem, ADDRESS_SPACE_PROGRAM, 8 ) AM_RANGE(0x0000, 0xbfff) AM_WRITE(SMH_ROM) AM_RANGE(0xc000, 0xc7ff) AM_WRITE(SMH_RAM) AM_RANGE(0xd000, 0xd001) AM_DEVWRITE("ay", ay8910_address_data_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("INPUTS") /* 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") /* 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( "gfx1", 0x0000, charlayout, 0 , 32 ) GFXDECODE_END static const ay8910_interface ay8910_config = { AY8910_LEGACY_OUTPUT, AY8910_DEFAULT_LOADS, DEVCB_INPUT_PORT("INPUTS"), DEVCB_INPUT_PORT("DSW"), DEVCB_NULL, DEVCB_NULL }; static MACHINE_DRIVER_START( hexa ) /* basic machine hardware */ MDRV_CPU_ADD("maincpu", Z80, 4000000) /* 4 MHz ??????? */ MDRV_CPU_PROGRAM_MAP(readmem,writemem) MDRV_CPU_VBLANK_INT("screen", irq0_line_hold) /* video hardware */ MDRV_SCREEN_ADD("screen", RASTER) MDRV_SCREEN_REFRESH_RATE(60) MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0)) 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("ay", AY8910, 1500000) MDRV_SOUND_CONFIG(ay8910_config) MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50) MACHINE_DRIVER_END /*************************************************************************** Game driver(s) ***************************************************************************/ ROM_START( hexa ) ROM_REGION( 0x18000, "maincpu", 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, "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, "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(machine, "maincpu"); /* 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 )