/***************************************************************************
Atari Sky Diver hardware
driver by Mike Balfour
Games supported:
* Sky Diver
Known issues:
* There is a problem with coin input not starting when in demo mode.
* The NMI interrupt needs to be more accurate, to do 32V, adjusted
to VBLANK. This also affects sound.
* The cuurent value of 5 interrupts per frame, works pretty good,
but is not 100% accurate timing wise.
****************************************************************************
Memory Map:
0000-00FF R/W PAGE ZERO RAM
0010 R/W H POS PLANE 1
0011 R/W H POS PLANE 2
0012 R/W H POS MAN 1
0013 R/W H POS MAN 2
0014 R/W RANGE LOAD
0015 R/W NOTE LOAD
0016 R/W NAM LD
0017 R/W UNUSED
0018 R/W V POS PLANE 1
0019 R/W PICTURE PLANE 1
001A R/W V POS PLANE 2
001B R/W PICTURE PLANE 2
001C R/W V POS MAN 1
001D R/W PICTURE MAN 1
001E R/W V POS MAN 2
001F R/W PICTURE MAN 2
0400-077F R/W PLAYFIELD
0780-07FF R/W MAPS TO 0000-D0
0800-0801 W S LAMP
0802-0803 W K LAMP
0804-0805 W START LITE 1
0806-0807 W START LITE 2
0808-0809 W Y LAMP
080A-080B W D LAMP
080C-080D W SOUND ENABLE
1000-1001 W JUMP LITE 1
1002-1003 W COIN LOCK OUT
1006-1007 W JUMP LITE 2
1008-1009 W WHISTLE 1
100A-100B W WHISTLE 2
100C-100D W NMION
100E-100F W WIDTH
1800 R D6=LEFT 1, D7=RIGHT 1
1801 R D6=LEFT 2, D7=RIGHT 2
1802 R D6=JUMP 1, D7=CHUTE 1
1803 R D6=JUMP 2, D7=CHUTE 2
1804 R D6=(D) OPT SW: NEXT TEST, D7=(F) OPT SW
1805 R D6=(E) OPT SW, D7= (H) OPT SW: DIAGNOSTICS
1806 R D6=START 1, D7=COIN 1
1807 R D6=START 2, D7=COIN 2
1808 R D6=MISSES 2, D7=MISSES 1
1809 R D6=COIN 2, D7=COIN1
180A R D6=HARD/EASY, D7=EXTENDED PLAY
180B R D6=LANGUAGE 2, D7=LANGUAGE 1
1810 R D6=TEST, D7=!VBLANK
1811 R D6=!SLAM, D7=UNUSED
2000 W TIMER RESET
2002-2003 W I LAMP
2004-2005 W V LAMP
2006-2007 W E LAMP
2008-2009 W R LAMP
200A-200B W OCT 1
200C-200D W OCT 2
200E-200F W NOISE RESET
2800-2FFF R ROM 0
3000-37FF R ROM 1
3800-3FFF R ROM 2A
7800-7FFF R ROM 2B
If you have any questions about how this driver works, don't hesitate to
ask. - Mike Balfour (mab22@po.cwru.edu)
Notes:
The NMI interrupts are only used to read the coin switches.
***************************************************************************/
#include "emu.h"
#include "cpu/m6800/m6800.h"
#include "includes/skydiver.h"
#include "sound/discrete.h"
#define MASTER_CLOCK (XTAL_12_096MHz)
/*************************************
*
* Palette generation
*
*************************************/
static const int colortable_source[] =
{
0x02, 0x00,
0x02, 0x01,
0x00, 0x02,
0x01, 0x02
};
static PALETTE_INIT( skydiver )
{
int i;
for (i = 0; i < sizeof(colortable_source) / sizeof(colortable_source[0]); i++)
{
rgb_t color;
switch (colortable_source[i])
{
case 0: color = RGB_BLACK; break;
case 1: color = RGB_WHITE; break;
default: color = MAKE_RGB(0xa0, 0xa0, 0xa0); break; /* grey */
}
palette_set_color(machine, i, color);
}
}
/*************************************
*
* Interrupt generation
*
*************************************/
static WRITE8_HANDLER( skydiver_nmion_w )
{
skydiver_state *state = space->machine().driver_data<skydiver_state>();
state->m_nmion = offset;
}
static INTERRUPT_GEN( skydiver_interrupt )
{
skydiver_state *state = device->machine().driver_data<skydiver_state>();
device_t *discrete = device->machine().device("discrete");
/* Convert range data to divide value and write to sound */
discrete_sound_w(discrete, SKYDIVER_RANGE_DATA, (0x01 << (~state->m_videoram[0x394] & 0x07)) & 0xff); // Range 0-2
discrete_sound_w(discrete, SKYDIVER_RANGE3_EN, state->m_videoram[0x394] & 0x08); // Range 3 - note disable
discrete_sound_w(discrete, SKYDIVER_NOTE_DATA, ~state->m_videoram[0x395] & 0xff); // Note - freq
discrete_sound_w(discrete, SKYDIVER_NOISE_DATA, state->m_videoram[0x396] & 0x0f); // NAM - Noise Amplitude
if (state->m_nmion)
device_set_input_line(device, INPUT_LINE_NMI, PULSE_LINE);
}
/*************************************
*
* Sound handlers
*
*************************************/
static WRITE8_DEVICE_HANDLER( skydiver_sound_enable_w )
{
discrete_sound_w(device, SKYDIVER_SOUND_EN, offset);
}
static WRITE8_DEVICE_HANDLER( skydiver_whistle_w )
{
discrete_sound_w(device, NODE_RELATIVE(SKYDIVER_WHISTLE1_EN, (offset >> 1)), offset & 0x01);
}
/*************************************
*
* Main CPU memory handlers
*
*************************************/
static ADDRESS_MAP_START( skydiver_map, AS_PROGRAM, 8 )
ADDRESS_MAP_GLOBAL_MASK(0x7fff)
AM_RANGE(0x0000, 0x007f) AM_MIRROR(0x4300) AM_READWRITE(skydiver_wram_r, skydiver_wram_w)
AM_RANGE(0x0080, 0x00ff) AM_MIRROR(0x4000) AM_RAM /* RAM B1 */
AM_RANGE(0x0400, 0x07ff) AM_MIRROR(0x4000) AM_RAM_WRITE(skydiver_videoram_w) AM_BASE_MEMBER(skydiver_state, m_videoram) /* RAMs K1,M1,P1,J1,N1,K/L1,L1,H/J1 */
AM_RANGE(0x0800, 0x0801) AM_MIRROR(0x47f0) AM_WRITE(skydiver_lamp_s_w)
AM_RANGE(0x0802, 0x0803) AM_MIRROR(0x47f0) AM_WRITE(skydiver_lamp_k_w)
AM_RANGE(0x0804, 0x0805) AM_MIRROR(0x47f0) AM_WRITE(skydiver_start_lamp_1_w)
AM_RANGE(0x0806, 0x0807) AM_MIRROR(0x47f0) AM_WRITE(skydiver_start_lamp_2_w)
AM_RANGE(0x0808, 0x0809) AM_MIRROR(0x47f0) AM_WRITE(skydiver_lamp_y_w)
AM_RANGE(0x080a, 0x080b) AM_MIRROR(0x47f0) AM_WRITE(skydiver_lamp_d_w)
AM_RANGE(0x080c, 0x080d) AM_MIRROR(0x47f0) AM_DEVWRITE("discrete", skydiver_sound_enable_w)
// AM_RANGE(0x1000, 0x1001) AM_MIRROR(0x47f0) AM_WRITE(skydiver_jump1_lamps_w)
AM_RANGE(0x1002, 0x1003) AM_MIRROR(0x47f0) AM_WRITE(skydiver_coin_lockout_w)
// AM_RANGE(0x1006, 0x1007) AM_MIRROR(0x47f0) AM_WRITE(skydiver_jump2_lamps_w)
AM_RANGE(0x1008, 0x100b) AM_MIRROR(0x47f0) AM_DEVWRITE("discrete", skydiver_whistle_w)
AM_RANGE(0x100c, 0x100d) AM_MIRROR(0x47f0) AM_WRITE(skydiver_nmion_w)
AM_RANGE(0x100e, 0x100f) AM_MIRROR(0x47f0) AM_WRITE(skydiver_width_w)
AM_RANGE(0x1800, 0x1800) AM_MIRROR(0x47e0) AM_READ_PORT("IN0")
AM_RANGE(0x1801, 0x1801) AM_MIRROR(0x47e0) AM_READ_PORT("IN1")
AM_RANGE(0x1802, 0x1802) AM_MIRROR(0x47e0) AM_READ_PORT("IN2")
AM_RANGE(0x1803, 0x1803) AM_MIRROR(0x47e0) AM_READ_PORT("IN3")
AM_RANGE(0x1804, 0x1804) AM_MIRROR(0x47e0) AM_READ_PORT("IN4")
AM_RANGE(0x1805, 0x1805) AM_MIRROR(0x47e0) AM_READ_PORT("IN5")
AM_RANGE(0x1806, 0x1806) AM_MIRROR(0x47e0) AM_READ_PORT("IN6")
AM_RANGE(0x1807, 0x1807) AM_MIRROR(0x47e0) AM_READ_PORT("IN7")
AM_RANGE(0x1808, 0x1808) AM_MIRROR(0x47e4) AM_READ_PORT("IN8")
AM_RANGE(0x1809, 0x1809) AM_MIRROR(0x47e4) AM_READ_PORT("IN9")
AM_RANGE(0x180a, 0x180a) AM_MIRROR(0x47e4) AM_READ_PORT("IN10")
AM_RANGE(0x180b, 0x180b) AM_MIRROR(0x47e4) AM_READ_PORT("IN11")
AM_RANGE(0x1810, 0x1810) AM_MIRROR(0x47e4) AM_READ_PORT("IN12")
AM_RANGE(0x1811, 0x1811) AM_MIRROR(0x47e4) AM_READ_PORT("IN13")
AM_RANGE(0x2000, 0x201f) AM_MIRROR(0x47e0) AM_READWRITE(watchdog_reset_r, skydiver_2000_201F_w)
AM_RANGE(0x2800, 0x2fff) AM_MIRROR(0x4000) AM_ROM
AM_RANGE(0x3000, 0x37ff) AM_MIRROR(0x4000) AM_ROM
AM_RANGE(0x3800, 0x3fff) AM_ROM
AM_RANGE(0x7800, 0x7fff) AM_ROM
ADDRESS_MAP_END
/*************************************
*
* Port definitions
*
*************************************/
static INPUT_PORTS_START( skydiver )
PORT_START("IN0")
PORT_BIT (0x3f, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT (0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )
PORT_BIT (0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT )
PORT_START("IN1")
PORT_BIT (0x3f, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT (0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2)
PORT_BIT (0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2)
PORT_START("IN2")
PORT_BIT (0x3f, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT (0x40, IP_ACTIVE_LOW, IPT_BUTTON1 ) /* Jump 1 */
PORT_BIT (0x80, IP_ACTIVE_LOW, IPT_BUTTON2 ) /* Chute 1 */
PORT_START("IN3")
PORT_BIT (0x3f, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT (0x40, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) /* Jump 2 */
PORT_BIT (0x80, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2) /* Chute 2 */
PORT_START("IN4")
PORT_BIT (0x3f, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_NAME("(D) OPT SW NEXT TEST") PORT_CODE(KEYCODE_D)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_NAME("(F) OPT SW") PORT_CODE(KEYCODE_F)
PORT_START("IN5")
PORT_BIT (0x3f, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_BUTTON5 ) PORT_NAME("(E) OPT SW") PORT_CODE(KEYCODE_E)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_BUTTON6 ) PORT_NAME("(H) OPT SW DIAGNOSTICS") PORT_CODE(KEYCODE_H)
PORT_START("IN6")
PORT_BIT (0x3f, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT (0x40, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_IMPULSE(1)
PORT_START("IN7")
PORT_BIT (0x3f, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT (0x40, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN2 ) PORT_IMPULSE(1)
PORT_START("IN8")
PORT_BIT (0x3f, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_DIPNAME( 0xc0, 0x00, DEF_STR( Lives ) )
PORT_DIPSETTING( 0x00, "3" )
PORT_DIPSETTING( 0x40, "4" )
PORT_DIPSETTING( 0x80, "5" )
PORT_DIPSETTING( 0xc0, "6" )
PORT_START("IN9")
PORT_BIT (0x3f, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_DIPNAME( 0xc0, 0x80, DEF_STR( Coinage ) )
PORT_DIPSETTING( 0xc0, DEF_STR( 2C_1C ) )
PORT_DIPSETTING( 0x80, DEF_STR( 1C_1C ) )
PORT_DIPSETTING( 0x40, DEF_STR( 1C_2C ) )
PORT_DIPSETTING( 0x00, DEF_STR( Free_Play ) )
PORT_START("IN10")
PORT_BIT (0x3f, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_DIPNAME( 0x40, 0x00, DEF_STR( Difficulty ) )
PORT_DIPSETTING( 0x40, DEF_STR( Easy ) )
PORT_DIPSETTING( 0x00, DEF_STR( Hard ) )
PORT_DIPNAME( 0x80, 0x00, "Extended Play" )
PORT_DIPSETTING( 0x80, DEF_STR( No ) )
PORT_DIPSETTING( 0x00, DEF_STR( Yes ) )
PORT_START("IN11")
PORT_BIT (0x3f, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_DIPNAME( 0xc0, 0x00, DEF_STR( Language ) )
PORT_DIPSETTING( 0x00, DEF_STR( English ) )
PORT_DIPSETTING( 0x40, DEF_STR( French ) )
PORT_DIPSETTING( 0x80, DEF_STR( Spanish ) )
PORT_DIPSETTING( 0xc0, DEF_STR( German ) )
PORT_START("IN12")
PORT_BIT (0x3f, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_SERVICE( 0x40, IP_ACTIVE_LOW )
PORT_BIT (0x80, IP_ACTIVE_LOW, IPT_VBLANK )
PORT_START("IN13")
PORT_BIT (0x3f, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT (0x40, IP_ACTIVE_LOW, IPT_TILT )
PORT_BIT (0x80, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START("WHISTLE1")
PORT_ADJUSTER( 33, "Whistle 1 Freq" )
PORT_START("WHISTLE2")
PORT_ADJUSTER( 25, "Whistle 2 Freq" )
INPUT_PORTS_END
/*************************************
*
* Graphics definitions
*
*************************************/
static const gfx_layout charlayout =
{
8,8,
64,
1,
{ 0 },
{ 7, 6, 5, 4, 15, 14, 13, 12 },
{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16 },
8*16
};
static const gfx_layout motion_layout =
{
16,16,
32,
1,
{ 0 },
{ 4, 5, 6, 7, 4 + 0x400*8, 5 + 0x400*8, 6 + 0x400*8, 7 + 0x400*8,
12, 13, 14, 15, 12 + 0x400*8, 13 + 0x400*8, 14 + 0x400*8, 15 + 0x400*8 },
{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16,
8*16, 9*16, 10*16, 11*16, 12*16, 13*16, 14*16, 15*16 },
8*32
};
static GFXDECODE_START( skydiver )
GFXDECODE_ENTRY( "gfx1", 0, charlayout, 0, 4 )
GFXDECODE_ENTRY( "gfx2", 0, motion_layout, 0, 4 )
GFXDECODE_END
/*************************************
*
* Machine driver
*
*************************************/
static MACHINE_CONFIG_START( skydiver, skydiver_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", M6800,MASTER_CLOCK/16) /* ???? */
MCFG_CPU_PROGRAM_MAP(skydiver_map)
MCFG_CPU_PERIODIC_INT(skydiver_interrupt, 5*60)
MCFG_WATCHDOG_VBLANK_INIT(8) // 128V clocks the same as VBLANK
MCFG_MACHINE_RESET(skydiver)
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(60)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */)
MCFG_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
MCFG_SCREEN_SIZE(32*8, 32*8)
MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 0*8, 28*8-1)
MCFG_SCREEN_UPDATE(skydiver)
MCFG_GFXDECODE(skydiver)
MCFG_PALETTE_LENGTH(sizeof(colortable_source) / sizeof(colortable_source[0]))
MCFG_PALETTE_INIT(skydiver)
MCFG_VIDEO_START(skydiver)
/* sound hardware */
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_SOUND_ADD("discrete", DISCRETE, 0)
MCFG_SOUND_CONFIG_DISCRETE(skydiver)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
MACHINE_CONFIG_END
/*************************************
*
* ROM definitions
*
*************************************/
ROM_START( skydiver )
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD( "33167-02.f1", 0x2800, 0x0800, CRC(25a5c976) SHA1(50fbf5dceab5d78292dc14bf25f2076e8139a594) )
ROM_LOAD( "33164-02.e1", 0x3000, 0x0800, CRC(a348ac39) SHA1(7401cbd2f7236bd1d6ad0e39eb3de2b7d75e8f45) )
ROM_LOAD( "33165-02.d1", 0x3800, 0x0800, CRC(a1fc5504) SHA1(febaa78936de7703b708c0d1f350fe288e0a106b) )
ROM_LOAD( "33166-02.c1", 0x7800, 0x0800, CRC(3d26da2b) SHA1(e515d5c13814b9732a6ca109272500a60edc208a) )
ROM_REGION( 0x0400, "gfx1", 0 )
ROM_LOAD( "33163-01.h5", 0x0000, 0x0400, CRC(5b9bb7c2) SHA1(319f45b6dff96739f73f2089361239da47042dcd) )
ROM_REGION( 0x0800, "gfx2", 0 )
ROM_LOAD( "33176-01.l5", 0x0000, 0x0400, CRC(6b082a01) SHA1(8facc94843ea041d205137056bd2035cf968125b) )
ROM_LOAD( "33177-01.k5", 0x0400, 0x0400, CRC(f5541af0) SHA1(0967269518b6eac3c4e9ddaee39303086476c580) )
ROM_END
/*************************************
*
* Game driver
*
*************************************/
GAME( 1978, skydiver, 0, skydiver, skydiver, 0, ROT0, "Atari", "Sky Diver", 0 )