/********************************************************************
Enigma 2 (c) Zilec Electronics
driver by Pierpaolo Prazzoli and Tomasz Slanina
Two sets:
Enigma2 (1981)
2xZ80 + AY8910
Enigma2a (1984?)
Conversion applied to a Taito Space Invaders Part II board set. Bootleg ?
TODO:
- enigma2 - Star blinking frequency
- enigma2a - bad sound ROM
*********************************************************************/
#include "driver.h"
#include "deprecat.h"
#include "sound/ay8910.h"
#define LOG_PROT (0)
/* these values provide a fairly low refresh rate of around 53Hz, but
they were derived from the schemtics. The horizontal synch chain
counts from 0x0c0-0x1ff and the vertical one from 0x0d8-0x1ff. */
#define MASTER_CLOCK (10000000)
#define CPU_CLOCK (MASTER_CLOCK / 4)
#define PIXEL_CLOCK (MASTER_CLOCK / 2)
#define AY8910_CLOCK (MASTER_CLOCK / 8)
#define HCOUNTER_START (0x0c0)
#define HCOUNTER_END (0x1ff)
#define HTOTAL (HCOUNTER_END + 1 - HCOUNTER_START)
#define HBEND (0x000)
#define HBSTART (0x100)
#define VCOUNTER_START (0x0d8)
#define VCOUNTER_END (0x1ff)
#define VTOTAL (VCOUNTER_END + 1 - VCOUNTER_START)
#define VBEND (0x048)
#define VBSTART (VTOTAL)
/* the IRQ line is cleared (active LO) at these vertical sync counter
values and raised one scan line later */
#define INT_TRIGGER_COUNT_1 (0x10f)
#define INT_TRIGGER_COUNT_2 (0x18f)
#define NUM_PENS (8)
static UINT8 *enigma2_ram;
static UINT8 sound_latch;
static UINT8 last_sound_data;
static UINT8 protection_data;
static UINT8 engima2_flip_screen;
/*************************************
*
* Interrupt generation
*
*************************************/
static emu_timer *interrupt_clear_timer;
static emu_timer *interrupt_assert_timer;
INLINE UINT16 vpos_to_vysnc_chain_counter(int vpos)
{
return vpos + VCOUNTER_START;
}
INLINE int vysnc_chain_counter_to_vpos(UINT16 counter)
{
return counter - VCOUNTER_START;
}
static TIMER_CALLBACK( interrupt_clear_callback )
{
cpunum_set_input_line(machine, 0, 0, CLEAR_LINE);
}
static TIMER_CALLBACK( interrupt_assert_callback )
{
UINT16 next_counter;
int next_vpos;
/* compute vector and set the interrupt line */
int vpos = video_screen_get_vpos(machine->primary_screen);
UINT16 counter = vpos_to_vysnc_chain_counter(vpos);
UINT8 vector = 0xc7 | ((counter & 0x80) >> 3) | ((~counter & 0x80) >> 4);
cpunum_set_input_line_and_vector(machine, 0, 0, ASSERT_LINE, vector);
/* set up for next interrupt */
if (counter == INT_TRIGGER_COUNT_1)
next_counter = INT_TRIGGER_COUNT_2;
else
next_counter = INT_TRIGGER_COUNT_1;
next_vpos = vysnc_chain_counter_to_vpos(next_counter);
timer_adjust_oneshot(interrupt_assert_timer, video_screen_get_time_until_pos(machine->primary_screen, next_vpos, 0), 0);
timer_adjust_oneshot(interrupt_clear_timer, video_screen_get_time_until_pos(machine->primary_screen, vpos + 1, 0), 0);
}
static void create_interrupt_timers(void)
{
interrupt_clear_timer = timer_alloc(interrupt_clear_callback, NULL);
interrupt_assert_timer = timer_alloc(interrupt_assert_callback, NULL);
}
static void start_interrupt_timers(running_machine *machine)
{
int vpos = vysnc_chain_counter_to_vpos(INT_TRIGGER_COUNT_1);
timer_adjust_oneshot(interrupt_assert_timer, video_screen_get_time_until_pos(machine->primary_screen, vpos, 0), 0);
}
static MACHINE_START( enigma2 )
{
create_interrupt_timers();
}
static MACHINE_RESET( enigma2 )
{
last_sound_data = 0;
cpunum_set_input_line(machine, 1, INPUT_LINE_NMI, CLEAR_LINE);
engima2_flip_screen = 0;
start_interrupt_timers(machine);
}
/*************************************
*
* Video system
*
*************************************/
static void get_pens(pen_t *pens)
{
offs_t i;
for (i = 0; i < NUM_PENS; i++)
{
/* this color gun arrengement is supported by the flyer screenshot */
pens[i] = MAKE_RGB(pal1bit(i >> 2), pal1bit(i >> 1), pal1bit(i >> 0));
}
}
static VIDEO_UPDATE( enigma2 )
{
static int blink_count;
pen_t pens[NUM_PENS];
const rectangle *visarea = video_screen_get_visible_area(screen);
UINT8 *prom = memory_region(screen->machine, "proms");
UINT8 *color_map_base = engima2_flip_screen ? &prom[0x0400] : &prom[0x0000];
UINT8 *star_map_base = (blink_count & 0x08) ? &prom[0x0c00] : &prom[0x0800];
UINT8 x = 0;
UINT16 bitmap_y = visarea->min_y;
UINT8 y = (UINT8)vpos_to_vysnc_chain_counter(bitmap_y);
UINT8 video_data = 0;
UINT8 fore_color = 0;
UINT8 star_color = 0;
get_pens(pens);
while (1)
{
UINT8 bit;
UINT8 color;
/* read the video RAM */
if ((x & 0x07) == 0x00)
{
offs_t color_map_address = (y >> 3 << 5) | (x >> 3);
/* the schematics shows it like this, but it doesn't work as this would
produce no stars, due to the contents of the PROM -- maybe there is
a star disabled bit somewhere that's connected here instead of flip_screen_get() */
/* star_map_address = (y >> 4 << 6) | (engima2_flip_screen_get() << 5) | (x >> 3); */
offs_t star_map_address = (y >> 4 << 6) | 0x20 | (x >> 3);
offs_t videoram_address = (y << 5) | (x >> 3);
/* when the screen is flipped, all the video address bits are inverted,
and the adder at 16A is activated */
if (engima2_flip_screen) videoram_address = (~videoram_address + 0x0400) & 0x1fff;
video_data = enigma2_ram[videoram_address];
fore_color = color_map_base[color_map_address] & 0x07;
star_color = star_map_base[star_map_address] & 0x07;
}
/* plot the current pixel */
if (engima2_flip_screen)
{
bit = video_data & 0x80;
video_data = video_data << 1;
}
else
{
bit = video_data & 0x01;
video_data = video_data >> 1;
}
if (bit)
color = fore_color;
else
/* stars only appear at certain positions */
color = ((x & y & 0x0f) == 0x0f) ? star_color : 0;
*BITMAP_ADDR32(bitmap, bitmap_y, x) = pens[color];
/* next pixel */
x = x + 1;
/* end of line? */
if (x == 0)
{
/* end of screen? */
if (bitmap_y == visarea->max_y)
break;
/* next row */
y = y + 1;
bitmap_y = bitmap_y + 1;
}
}
blink_count++;
return 0;
}
static VIDEO_UPDATE( enigma2a )
{
UINT8 x = 0;
const rectangle *visarea = video_screen_get_visible_area(screen);
UINT16 bitmap_y = visarea->min_y;
UINT8 y = (UINT8)vpos_to_vysnc_chain_counter(bitmap_y);
UINT8 video_data = 0;
while (1)
{
UINT8 bit;
pen_t pen;
/* read the video RAM */
if ((x & 0x07) == 0x00)
{
offs_t videoram_address = (y << 5) | (x >> 3);
/* when the screen is flipped, all the video address bits are inverted,
and the adder at 16A is activated */
if (engima2_flip_screen) videoram_address = (~videoram_address + 0x0400) & 0x1fff;
video_data = enigma2_ram[videoram_address];
}
/* plot the current pixel */
if (engima2_flip_screen)
{
bit = video_data & 0x80;
video_data = video_data << 1;
}
else
{
bit = video_data & 0x01;
video_data = video_data >> 1;
}
pen = bit ? RGB_WHITE : RGB_BLACK;
*BITMAP_ADDR32(bitmap, bitmap_y, x) = pen;
/* next pixel */
x = x + 1;
/* end of line? */
if (x == 0)
{
/* end of screen? */
if (bitmap_y == visarea->max_y)
break;
/* next row */
y = y + 1;
bitmap_y = bitmap_y + 1;
}
}
return 0;
}
static READ8_HANDLER( dip_switch_r )
{
UINT8 ret = 0x00;
if (LOG_PROT) logerror("DIP SW Read: %x at %x (prot data %x)\n", offset, activecpu_get_pc(), protection_data);
switch (offset)
{
case 0x01:
if (protection_data != 0xff)
ret = protection_data ^ 0x88;
else
ret = input_port_read(machine, "DSW");
break;
case 0x02:
if (activecpu_get_pc() == 0x07e5)
ret = 0xaa;
else
ret = 0xf4;
break;
case 0x35: ret = 0x38; break;
case 0x51: ret = 0xaa; break;
case 0x79: ret = 0x38; break;
}
return ret;
}
static WRITE8_HANDLER( sound_data_w )
{
/* clock sound latch shift register on rising edge of D2 */
if (!(data & 0x04) && (last_sound_data & 0x04))
sound_latch = (sound_latch << 1) | (~data & 0x01);
cpunum_set_input_line(machine, 1, INPUT_LINE_NMI, (data & 0x02) ? ASSERT_LINE : CLEAR_LINE);
last_sound_data = data;
}
static READ8_HANDLER( sound_latch_r )
{
return BITSWAP8(sound_latch,0,1,2,3,4,5,6,7);
}
static WRITE8_HANDLER( protection_data_w )
{
if (LOG_PROT) logerror("Protection Data Write: %x at %x\n", data, safe_activecpu_get_pc());
protection_data = data;
}
static WRITE8_HANDLER( enigma2_flip_screen_w )
{
engima2_flip_screen = ((data >> 5) & 0x01) && ((input_port_read(machine, "DSW") & 0x20) == 0x20);
}
static CUSTOM_INPUT( p1_controls_r )
{
return input_port_read(field->port->machine, "P1CONTROLS");
}
static CUSTOM_INPUT( p2_controls_r )
{
if (engima2_flip_screen)
return input_port_read(field->port->machine, "P2CONTROLS");
else
return input_port_read(field->port->machine, "P1CONTROLS");
}
static const ay8910_interface ay8910_config =
{
AY8910_LEGACY_OUTPUT,
AY8910_DEFAULT_LOADS,
sound_latch_r,
0,
0,
protection_data_w
};
static ADDRESS_MAP_START( engima2_main_cpu_map, ADDRESS_SPACE_PROGRAM, 8 )
ADDRESS_MAP_GLOBAL_MASK(0x7fff)
AM_RANGE(0x0000, 0x1fff) AM_ROM AM_WRITENOP
AM_RANGE(0x2000, 0x3fff) AM_MIRROR(0x4000) AM_RAM AM_BASE(&enigma2_ram)
AM_RANGE(0x4000, 0x4fff) AM_ROM AM_WRITENOP
AM_RANGE(0x5000, 0x57ff) AM_READWRITE(dip_switch_r, SMH_NOP)
AM_RANGE(0x5800, 0x5800) AM_MIRROR(0x07f8) AM_NOP
AM_RANGE(0x5801, 0x5801) AM_MIRROR(0x07f8) AM_READ_PORT("IN0") AM_WRITENOP
AM_RANGE(0x5802, 0x5802) AM_MIRROR(0x07f8) AM_READ_PORT("IN1") AM_WRITENOP
AM_RANGE(0x5803, 0x5803) AM_MIRROR(0x07f8) AM_READWRITE(SMH_NOP, sound_data_w)
AM_RANGE(0x5804, 0x5804) AM_MIRROR(0x07f8) AM_NOP
AM_RANGE(0x5805, 0x5805) AM_MIRROR(0x07f8) AM_READWRITE(SMH_NOP, enigma2_flip_screen_w)
AM_RANGE(0x5806, 0x5807) AM_MIRROR(0x07f8) AM_NOP
ADDRESS_MAP_END
static ADDRESS_MAP_START( engima2a_main_cpu_map, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0x0000, 0x1fff) AM_ROM AM_WRITENOP
AM_RANGE(0x2000, 0x3fff) AM_MIRROR(0x4000) AM_RAM AM_BASE(&enigma2_ram)
AM_RANGE(0x4000, 0x4fff) AM_ROM AM_WRITENOP
AM_RANGE(0x5000, 0x57ff) AM_READWRITE(dip_switch_r, SMH_NOP)
AM_RANGE(0x5800, 0x5fff) AM_NOP
ADDRESS_MAP_END
static ADDRESS_MAP_START( engima2a_main_cpu_io_map, ADDRESS_SPACE_IO, 8 )
ADDRESS_MAP_GLOBAL_MASK(0x7)
AM_RANGE(0x00, 0x00) AM_NOP
AM_RANGE(0x01, 0x01) AM_READ_PORT("IN0") AM_WRITENOP
AM_RANGE(0x02, 0x02) AM_READ_PORT("IN1") AM_WRITENOP
AM_RANGE(0x03, 0x03) AM_READWRITE(SMH_NOP, sound_data_w)
AM_RANGE(0x04, 0x04) AM_NOP
AM_RANGE(0x05, 0x05) AM_READWRITE(SMH_NOP, enigma2_flip_screen_w)
AM_RANGE(0x06, 0x07) AM_NOP
ADDRESS_MAP_END
static ADDRESS_MAP_START( engima2_audio_cpu_map, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0x0000, 0x0fff) AM_MIRROR(0x1000) AM_ROM AM_WRITENOP
AM_RANGE(0x2000, 0x7fff) AM_NOP
AM_RANGE(0x8000, 0x83ff) AM_MIRROR(0x1c00) AM_RAM
AM_RANGE(0xa000, 0xa000) AM_MIRROR(0x1ffc) AM_WRITE(ay8910_control_port_0_w)
AM_RANGE(0xa001, 0xa001) AM_MIRROR(0x1ffc) AM_WRITE(ay8910_write_port_0_w)
AM_RANGE(0xa002, 0xa002) AM_MIRROR(0x1ffc) AM_READ(ay8910_read_port_0_r)
AM_RANGE(0xa003, 0xa003) AM_MIRROR(0x1ffc) AM_NOP
AM_RANGE(0xc000, 0xffff) AM_NOP
ADDRESS_MAP_END
static INPUT_PORTS_START( enigma2 )
PORT_START("IN0")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 )
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_START2 )
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_START1 )
PORT_BIT( 0x78, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM(p1_controls_r, NULL)
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_START("IN1")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x78, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM(p2_controls_r, NULL)
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_START("DSW")
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( 0x1c, 0x00, "Skill level" )
PORT_DIPSETTING( 0x00, "1" )
PORT_DIPSETTING( 0x04, "2" )
PORT_DIPSETTING( 0x0c, "3" )
PORT_DIPSETTING( 0x08, "4" )
PORT_DIPSETTING( 0x10, "5" )
PORT_DIPSETTING( 0x14, "6" )
PORT_DIPNAME( 0x20, 0x00, DEF_STR( Cabinet ) )
PORT_DIPSETTING( 0x00, DEF_STR( Upright ) )
PORT_DIPSETTING( 0x20, DEF_STR( Cocktail ) )
PORT_DIPNAME( 0x40, 0x40, "Number of invaders" )
PORT_DIPSETTING( 0x40, "16" )
PORT_DIPSETTING( 0x00, "32" )
PORT_DIPNAME( 0x80, 0x00, DEF_STR( Coinage ) )
PORT_DIPSETTING( 0x80, DEF_STR( 2C_1C ) )
PORT_DIPSETTING( 0x00, DEF_STR( 1C_1C ) )
PORT_START("P1CONTROLS")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_PLAYER(1)
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(1)
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_2WAY PORT_PLAYER(1)
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_2WAY PORT_PLAYER(1)
PORT_BIT( 0xf0, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_START("P2CONTROLS")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_PLAYER(2)
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(2)
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_2WAY PORT_PLAYER(2)
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_2WAY PORT_PLAYER(2)
PORT_BIT( 0xf0, IP_ACTIVE_HIGH, IPT_UNUSED )
INPUT_PORTS_END
static INPUT_PORTS_START( enigma2a )
PORT_START("IN0")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 )
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_START2 )
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_START1 )
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x70, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM(p1_controls_r, NULL)
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_START("IN1")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x70, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM(p2_controls_r, NULL)
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_START("DSW")
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( 0x1c, 0x00, "Skill level" )
PORT_DIPSETTING( 0x00, "1" )
PORT_DIPSETTING( 0x04, "2" )
PORT_DIPSETTING( 0x0c, "3" )
PORT_DIPSETTING( 0x08, "4" )
PORT_DIPSETTING( 0x10, "5" )
PORT_DIPSETTING( 0x14, "6" )
PORT_DIPNAME( 0x20, 0x00, DEF_STR( Cabinet ) )
PORT_DIPSETTING( 0x00, DEF_STR( Upright ) )
PORT_DIPSETTING( 0x20, DEF_STR( Cocktail ) )
PORT_DIPNAME( 0x40, 0x00, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x40, DEF_STR( On ) )
PORT_DIPNAME( 0x80, 0x00, DEF_STR( Coinage ) )
PORT_DIPSETTING( 0x80, DEF_STR( 2C_1C ) )
PORT_DIPSETTING( 0x00, DEF_STR( 1C_1C ) )
PORT_START("P1CONTROLS")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(1)
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_2WAY PORT_PLAYER(1)
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_2WAY PORT_PLAYER(1)
PORT_BIT( 0xf8, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_START("P2CONTROLS")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(2)
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_2WAY PORT_PLAYER(2)
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_2WAY PORT_PLAYER(2)
PORT_BIT( 0xf8, IP_ACTIVE_HIGH, IPT_UNUSED )
INPUT_PORTS_END
static MACHINE_DRIVER_START( enigma2 )
/* basic machine hardware */
MDRV_CPU_ADD("main", Z80, CPU_CLOCK)
MDRV_CPU_PROGRAM_MAP(engima2_main_cpu_map,0)
MDRV_CPU_ADD("audio", Z80, 2500000)
MDRV_CPU_VBLANK_INT_HACK(irq0_line_hold,8)
MDRV_CPU_PROGRAM_MAP(engima2_audio_cpu_map,0)
MDRV_MACHINE_START(enigma2)
MDRV_MACHINE_RESET(enigma2)
/* video hardware */
MDRV_VIDEO_UPDATE(enigma2)
MDRV_SCREEN_ADD("main", RASTER)
MDRV_SCREEN_FORMAT(BITMAP_FORMAT_RGB32)
MDRV_SCREEN_RAW_PARAMS(PIXEL_CLOCK, HTOTAL, HBEND, HBSTART, VTOTAL, VBEND, VBSTART)
/* audio hardware */
MDRV_SPEAKER_STANDARD_MONO("mono")
MDRV_SOUND_ADD("ay", AY8910, AY8910_CLOCK)
MDRV_SOUND_CONFIG(ay8910_config)
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
MACHINE_DRIVER_END
static MACHINE_DRIVER_START( enigma2a )
/* basic machine hardware */
MDRV_CPU_ADD("main", 8080, CPU_CLOCK)
MDRV_CPU_PROGRAM_MAP(engima2a_main_cpu_map,0)
MDRV_CPU_IO_MAP(engima2a_main_cpu_io_map,0)
MDRV_CPU_ADD("audio", Z80, 2500000)
MDRV_CPU_VBLANK_INT_HACK(irq0_line_hold,8)
MDRV_CPU_PROGRAM_MAP(engima2_audio_cpu_map,0)
MDRV_MACHINE_START(enigma2)
MDRV_MACHINE_RESET(enigma2)
/* video hardware */
MDRV_VIDEO_UPDATE(enigma2a)
MDRV_SCREEN_ADD("main", RASTER)
MDRV_SCREEN_FORMAT(BITMAP_FORMAT_RGB32)
MDRV_SCREEN_RAW_PARAMS(PIXEL_CLOCK, HTOTAL, HBEND, HBSTART, VTOTAL, VBEND, VBSTART)
/* audio hardware */
MDRV_SPEAKER_STANDARD_MONO("mono")
MDRV_SOUND_ADD("ay", AY8910, AY8910_CLOCK)
MDRV_SOUND_CONFIG(ay8910_config)
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
MACHINE_DRIVER_END
ROM_START( enigma2 )
ROM_REGION( 0x10000, "main", 0 )
ROM_LOAD( "1.5d", 0x0000, 0x0800, CRC(499749de) SHA1(401928ff41d3b4cbb68e6ad3bf3be4a10ae1781f) )
ROM_LOAD( "2.7d", 0x0800, 0x0800, CRC(173c1329) SHA1(3f1ad46d0e58ab236e4ff2b385d09fbf113627da) )
ROM_LOAD( "3.8d", 0x1000, 0x0800, CRC(c7d3e6b1) SHA1(43f7c3a02b46747998260d5469248f21714fe12b) )
ROM_LOAD( "4.10d", 0x1800, 0x0800, CRC(c6a7428c) SHA1(3503f09856655c5973fb89f60d1045fe41012aa9) )
ROM_LOAD( "5.11d", 0x4000, 0x0800, CRC(098ac15b) SHA1(cce28a2540a9eabb473391fff92895129ae41751) )
ROM_LOAD( "6.13d", 0x4800, 0x0800, CRC(240a9d4b) SHA1(ca1c69fafec0471141ce1254ddfaef54fecfcbf0) )
ROM_REGION( 0x10000, "audio", 0 )
ROM_LOAD( "enigma2.s", 0x0000, 0x1000, CRC(68fd8c54) SHA1(69996d5dfd996f0aacb26e397bef314204a2a88a) )
ROM_REGION( 0x1000, "proms", 0 ) /* color map/star map */
ROM_LOAD( "7.11f", 0x0000, 0x0800, CRC(409b5aad) SHA1(1b774a70f725637458ed68df9ed42476291b0e43) )
ROM_LOAD( "8.13f", 0x0800, 0x0800, CRC(e9cb116d) SHA1(41da4f46c5614ec3345c233467ebad022c6b0bf5) )
ROM_END
ROM_START( enigma2a )
ROM_REGION( 0x10000, "main", 0 )
ROM_LOAD( "36_en1.bin", 0x0000, 0x0800, CRC(15f44806) SHA1(4a2f7bc91d4edf7a069e0865d964371c97af0a0a) )
ROM_LOAD( "35_en2.bin", 0x0800, 0x0800, CRC(e841072f) SHA1(6ab02fd9fdeac5ab887cd25eee3d6b70ab01f849) )
ROM_LOAD( "34_en3.bin", 0x1000, 0x0800, CRC(43d06cf4) SHA1(495af05d54c0325efb67347f691e64d194645d85) )
ROM_LOAD( "33_en4.bin", 0x1800, 0x0800, CRC(8879a430) SHA1(c97f44bef3741eef74e137d2459e79f1b3a90457) )
ROM_LOAD( "5.11d", 0x4000, 0x0800, CRC(098ac15b) SHA1(cce28a2540a9eabb473391fff92895129ae41751) )
ROM_LOAD( "6.13d", 0x4800, 0x0800, CRC(240a9d4b) SHA1(ca1c69fafec0471141ce1254ddfaef54fecfcbf0) )
ROM_REGION( 0x10000, "audio", 0 )
ROM_LOAD( "sound.bin", 0x0000, 0x0800, BAD_DUMP CRC(5f092d3c) SHA1(17c70f6af1b5560a45e6b1bdb330a98b27570fe9) )
ROM_END
static DRIVER_INIT(enigma2)
{
offs_t i;
UINT8 *rom = memory_region(machine, "audio");
for(i = 0; i < 0x2000; i++)
{
rom[i] = BITSWAP8(rom[i],4,5,6,0,7,1,3,2);
}
}
GAME( 1981, enigma2, 0, enigma2, enigma2, enigma2, ROT270, "GamePlan (Zilec Electronics license)", "Enigma II", 0 )
GAME( 1984, enigma2a, enigma2, enigma2a, enigma2a, enigma2, ROT270, "Zilec Electronics", "Enigma II (Space Invaders hardware)", 0 )