/****************************************************************************
Safari Rally hardware
driver by Zsolt Vasvari
Games Supported:
* Safari Rally (Japan)
Known issues/to-do's:
* SN76477 sound
* Background colors are wrong.
Flyer shows red and perhaps blue,
but I don't see an obvious mapping
Notes:
* This hardware is a precursor to Phoenix
----------------------------------
CPU board
76477 18MHz
8080
----------------------------------
Video board
RL07 2114
2114
2114
2114
2114 RL01 RL02
2114 RL03 RL04
2114 RL05 RL06
RL08 2114
11MHz
----------------------------------
****************************************************************************/
#include "driver.h"
static UINT8 *ram_1, *ram_2;
static size_t ram_size;
static UINT8 ram_bank;
static tilemap *bg_tilemap, *fg_tilemap;
static UINT8 *bg_scroll;
/*************************************
*
* RAM banking
*
*************************************/
static WRITE8_HANDLER( ram_w )
{
if (ram_bank)
ram_2[offset] = data;
else
ram_1[offset] = data;
tilemap_mark_tile_dirty((offset & 0x0400) ? bg_tilemap : fg_tilemap, offset & 0x03ff);
}
static READ8_HANDLER( ram_r )
{
return ram_bank ? ram_2[offset] : ram_1[offset];
}
static WRITE8_HANDLER( ram_bank_w )
{
ram_bank = data & 0x01;
tilemap_mark_all_tiles_dirty(ALL_TILEMAPS);
}
/*************************************
*
* Video system
*
*************************************/
static const gfx_layout charlayout =
{
8,8, /* 8*8 chars */
128, /* 128 characters */
1, /* 1 bit per pixel */
{ 0 },
{ 7, 6, 5, 4, 3, 2, 1, 0 },
{ 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 GFXDECODE_START( safarir )
GFXDECODE_ENTRY( REGION_GFX1, 0, charlayout, 0, 8 )
GFXDECODE_ENTRY( REGION_GFX2, 0, charlayout, 0, 8 )
GFXDECODE_END
static PALETTE_INIT( safarir )
{
int i;
for (i = 0; i < machine->drv->total_colors; i++)
{
palette_set_color_rgb(machine, i, pal1bit(i >> 2), pal1bit(i >> 1), pal1bit(i >> 0));
colortable[(i * 2) + 0] = 0;
colortable[(i * 2) + 1] = i;
}
}
static TILE_GET_INFO( get_bg_tile_info )
{
int color;
UINT8 code = ram_r(tile_index | 0x400);
/* this is wrong */
if (code & 0x80)
color = 6; /* yellow */
else
color = 2; /* green */
SET_TILE_INFO(0, code & 0x7f, color, 0);
}
static TILE_GET_INFO( get_fg_tile_info )
{
int color, flags;
UINT8 code = ram_r(tile_index);
if (code & 0x80)
color = 7; /* white */
else
color = (~tile_index & 0x04) | ((tile_index >> 1) & 0x03);
flags = ((tile_index & 0x1f) >= 0x03) ? 0 : TILE_FORCE_LAYER0;
SET_TILE_INFO(1, code & 0x7f, color, flags);
}
static VIDEO_START( safarir )
{
bg_tilemap = tilemap_create(get_bg_tile_info, tilemap_scan_rows, TILEMAP_TYPE_PEN, 8, 8, 32, 32);
fg_tilemap = tilemap_create(get_fg_tile_info, tilemap_scan_rows, TILEMAP_TYPE_PEN, 8, 8, 32, 32);
tilemap_set_transparent_pen(fg_tilemap, 0);
}
static VIDEO_UPDATE( safarir )
{
tilemap_set_scrollx(bg_tilemap, 0, *bg_scroll);
tilemap_draw(bitmap, cliprect, bg_tilemap, 0, 0);
tilemap_draw(bitmap, cliprect, fg_tilemap, 0, 0);
return 0;
}
/*************************************
*
* Machine start
*
*************************************/
static MACHINE_START( safarir )
{
ram_1 = auto_malloc(ram_size);
ram_2 = auto_malloc(ram_size);
/* setup for save states */
state_save_register_global_pointer(ram_1, ram_size);
state_save_register_global_pointer(ram_2, ram_size);
state_save_register_global(ram_bank);
}
/*************************************
*
* Memory handlers
*
*************************************/
static ADDRESS_MAP_START( main_map, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0x0000, 0x17ff) AM_ROM
AM_RANGE(0x2000, 0x27ff) AM_READWRITE(ram_r, ram_w) AM_SIZE(&ram_size)
AM_RANGE(0x2800, 0x2800) AM_MIRROR(0x03ff) AM_READWRITE(MRA8_NOP, ram_bank_w)
AM_RANGE(0x2c00, 0x2cff) AM_MIRROR(0x03ff) AM_READWRITE(MRA8_NOP, MWA8_RAM) AM_BASE(&bg_scroll)
AM_RANGE(0x3000, 0x30ff) AM_MIRROR(0x03ff) AM_WRITENOP /* goes to SN76477 */
AM_RANGE(0x3400, 0x3400) AM_MIRROR(0x03ff) AM_WRITENOP /* cleared at the beginning */
AM_RANGE(0x3800, 0x38ff) AM_MIRROR(0x03ff) AM_READWRITE(input_port_0_r, MWA8_NOP)
AM_RANGE(0x3c00, 0x3cff) AM_MIRROR(0x03ff) AM_READWRITE(input_port_1_r, MWA8_NOP)
ADDRESS_MAP_END
/*************************************
*
* Port definition
*
*************************************/
static INPUT_PORTS_START( safarir )
PORT_START /* IN0 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_2WAY
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_2WAY
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START /* DSW0 */
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( 0x0c, 0x04, "Acceleration Rate" )
PORT_DIPSETTING( 0x00, "Slowest" )
PORT_DIPSETTING( 0x04, "Slow" )
PORT_DIPSETTING( 0x08, "Fast" )
PORT_DIPSETTING( 0x0c, "Fastest" )
PORT_DIPNAME( 0x10, 0x00, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x10, DEF_STR( On ) )
PORT_DIPNAME( 0x60, 0x20, DEF_STR( Bonus_Life ) )
PORT_DIPSETTING( 0x00, "3000" )
PORT_DIPSETTING( 0x20, "5000" )
PORT_DIPSETTING( 0x40, "7000" )
PORT_DIPSETTING( 0x60, "9000" )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_VBLANK )
INPUT_PORTS_END
/*************************************
*
* Machine driver
*
*************************************/
static MACHINE_DRIVER_START( safarir )
/* basic machine hardware */
MDRV_CPU_ADD(8080, 3072000) /* 3 MHz ? */
MDRV_CPU_PROGRAM_MAP(main_map, 0)
MDRV_MACHINE_START(safarir)
/* video hardware */
MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
MDRV_VIDEO_START(safarir)
MDRV_VIDEO_UPDATE(safarir)
MDRV_PALETTE_LENGTH(8)
MDRV_PALETTE_INIT(safarir)
MDRV_COLORTABLE_LENGTH(2*8)
MDRV_GFXDECODE(safarir)
MDRV_SCREEN_ADD("main", 0)
MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
MDRV_SCREEN_SIZE(32*8, 32*8)
MDRV_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 0*8, 26*8-1)
MDRV_SCREEN_REFRESH_RATE(60)
/* audio hardware */
MACHINE_DRIVER_END
/*************************************
*
* ROM definition
*
*************************************/
ROM_START( safarir )
ROM_REGION( 0x10000, REGION_CPU1, 0 )
ROM_LOAD( "rl01", 0x0000, 0x0400, CRC(cf7703c9) SHA1(b4182df9332b355edaa518462217a6e31e1c07b2) )
ROM_LOAD( "rl02", 0x0400, 0x0400, CRC(1013ecd3) SHA1(2fe367db8ca367b36c5378cb7d5ff918db243c78) )
ROM_LOAD( "rl03", 0x0800, 0x0400, CRC(84545894) SHA1(377494ceeac5ad58b70f77b2b27b609491cb7ffd) )
ROM_LOAD( "rl04", 0x0c00, 0x0400, CRC(5dd12f96) SHA1(a80ac0705648f0807ea33e444fdbea450bf23f85) )
ROM_LOAD( "rl05", 0x1000, 0x0400, CRC(935ed469) SHA1(052a59df831dcc2c618e9e5e5fdfa47548550596) )
ROM_LOAD( "rl06", 0x1400, 0x0400, CRC(24c1cd42) SHA1(fe32ecea77a3777f8137ca248b8f371db37b8b85) )
ROM_REGION( 0x0400, REGION_GFX1, ROMREGION_DISPOSE )
ROM_LOAD( "rl08", 0x0000, 0x0400, CRC(d6a50aac) SHA1(0a0c2cefc556e4e15085318fcac485b82bac2416) )
ROM_REGION( 0x0400, REGION_GFX2, ROMREGION_DISPOSE )
ROM_LOAD( "rl07", 0x0000, 0x0400, CRC(ba525203) SHA1(1c261cc1259787a7a248766264fefe140226e465) )
ROM_END
/*************************************
*
* Game driver
*
*************************************/
GAME( 1979, safarir, 0, safarir, safarir, 0, ROT90, "SNK", "Safari Rally (Japan)", GAME_IMPERFECT_COLORS | GAME_NO_SOUND | GAME_SUPPORTS_SAVE )