📄 stactics.c
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/****************************************************************************
Sega "Space Tactics" Driver
Frank Palazzolo (palazzol@home.com)
Master processor - Intel 8080A
Memory Map:
0000-2fff ROM R
4000-47ff RAM R/W
5000-5fff switches/status R
6000-6fff dips sw R
6000-600f Coin rjct/palette select W
6010-601f sound triggers W
6020-602f lamp latch W
6030-603f speed latch W
6040-605f shot related W
6060-606f score display W
60a0-60e0 sound triggers2 W
7000-7fff RNG/swit R LS Nibble are a VBlank counter
used as a RNG
8000-8fff swit/stat R
8000-8fff offset RAM W
9000-9fff V pos reg. R Reads counter from an encoder wheel
a000-afff H pos reg. R Reads counter from an encoder wheel
b000-bfff VRAM B R/W alphanumerics, bases, barrier,
enemy bombs
d000-dfff VRAM D R/W furthest aliens (scrolling)
e000-efff VRAM E R/W middle aliens (scrolling)
f000-ffff VRAM F R/W closest aliens (scrolling)
--------------------------------------------------------------------
At this time, emulation is missing:
Lamps (Credit, Barrier, and 5 lamps for firing from the bases)
Sound (all discrete and a 76447)
Verify Color PROM resistor values (Last 8 colors)
Verify Bar graph displays
****************************************************************************/
#include "driver.h"
#include "vidhrdw/generic.h"
/* Defined in machine/stactics.c */
extern int stactics_port_0_r(int);
extern int stactics_port_2_r(int);
extern int stactics_port_3_r(int);
extern int stactics_vert_pos_r(int);
extern int stactics_horiz_pos_r(int);
extern int stactics_interrupt(void);
/* Defined in vidhrdw/stactics.c */
extern int stactics_vh_start(void);
extern void stactics_vh_stop(void);
extern void stactics_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);
extern unsigned char *stactics_scroll_ram;
extern unsigned char *stactics_videoram_b;
extern unsigned char *stactics_chardata_b;
extern unsigned char *stactics_videoram_d;
extern unsigned char *stactics_chardata_d;
extern unsigned char *stactics_videoram_e;
extern unsigned char *stactics_chardata_e;
extern unsigned char *stactics_videoram_f;
extern unsigned char *stactics_chardata_f;
void stactics_vh_convert_color_prom(unsigned char *palette, unsigned short *colortable,
const unsigned char *color_prom);
extern int stactics_videoram_b_r(int);
extern int stactics_chardata_b_r(int);
extern int stactics_videoram_d_r(int);
extern int stactics_chardata_d_r(int);
extern int stactics_videoram_e_r(int);
extern int stactics_chardata_e_r(int);
extern int stactics_videoram_f_r(int);
extern int stactics_chardata_f_r(int);
extern void stactics_palette_w(int, int);
extern void stactics_score_w(int, int);
extern void stactics_motor_w(int, int);
extern void stactics_scroll_ram_w(int, int);
extern void stactics_speed_latch_w(int, int);
extern void stactics_shot_trigger_w(int, int);
extern void stactics_shot_flag_clear_w(int, int);
extern void stactics_videoram_b_w(int, int);
extern void stactics_chardata_b_w(int, int);
extern void stactics_videoram_d_w(int, int);
extern void stactics_chardata_d_w(int, int);
extern void stactics_videoram_e_w(int, int);
extern void stactics_chardata_e_w(int, int);
extern void stactics_videoram_f_w(int, int);
extern void stactics_chardata_f_w(int, int);
static struct MemoryReadAddress readmem[] =
{
{ 0x0000, 0x2fff, MRA_ROM },
{ 0x4000, 0x47ff, MRA_RAM },
{ 0x5000, 0x5fff, input_port_0_r, },
{ 0x6000, 0x6fff, input_port_1_r, },
{ 0x7000, 0x7fff, stactics_port_2_r, },
{ 0x8000, 0x8fff, stactics_port_3_r },
{ 0x9000, 0x9fff, stactics_vert_pos_r },
{ 0xa000, 0xafff, stactics_horiz_pos_r },
{ 0xb000, 0xb3ff, stactics_videoram_b_r, &stactics_videoram_b },
{ 0xb400, 0xb7ff, MRA_RAM }, /* Unused */
{ 0xb800, 0xbfff, stactics_chardata_b_r, &stactics_chardata_b },
{ 0xd000, 0xd3ff, stactics_videoram_d_r, &stactics_videoram_d },
{ 0xd400, 0xd7ff, MRA_RAM }, /* Unused */
{ 0xd800, 0xdfff, stactics_chardata_d_r, &stactics_chardata_d },
{ 0xe000, 0xe3ff, stactics_videoram_e_r, &stactics_videoram_e },
{ 0xe400, 0xe7ff, MRA_RAM }, /* Unused */
{ 0xe800, 0xefff, stactics_chardata_e_r, &stactics_chardata_e },
{ 0xf000, 0xf3ff, stactics_videoram_f_r, &stactics_videoram_f },
{ 0xf400, 0xf7ff, MRA_RAM }, /* Unused */
{ 0xf800, 0xffff, stactics_chardata_f_r, &stactics_chardata_f },
{ -1 } /* end of table */
};
static struct MemoryWriteAddress writemem[] =
{
{ 0x0000, 0x2fff, MWA_ROM },
{ 0x4000, 0x47ff, MWA_RAM },
/* { 0x6000, 0x6001, stactics_coin_reject_w }, */
{ 0x6006, 0x6007, stactics_palette_w },
/* { 0x6010, 0c601f, stactics_sound_w }, */
{ 0x6016, 0x6016, stactics_motor_w }, /* Note: This overlaps rocket sound */
/* { 0x6020, 0x602f, stactics_lamp_latch_w }, */
{ 0x6030, 0x603f, stactics_speed_latch_w },
{ 0x6040, 0x604f, stactics_shot_trigger_w },
{ 0x6050, 0x605f, stactics_shot_flag_clear_w },
{ 0x6060, 0x606f, stactics_score_w },
/* { 0x60a0, 0x60ef, stactics_sound2_w }, */
{ 0x8000, 0x8fff, stactics_scroll_ram_w, &stactics_scroll_ram },
{ 0xb000, 0xb3ff, stactics_videoram_b_w, &stactics_videoram_b },
{ 0xb400, 0xb7ff, MWA_RAM }, /* Unused */
{ 0xb800, 0xbfff, stactics_chardata_b_w, &stactics_chardata_b },
{ 0xc000, 0xcfff, MWA_NOP }, /* according to the schematics, nothing is mapped here */
/* but, the game still tries to clear this out */
{ 0xd000, 0xd3ff, stactics_videoram_d_w, &stactics_videoram_d },
{ 0xd400, 0xd7ff, MWA_RAM }, /* Unused */
{ 0xd800, 0xdfff, stactics_chardata_d_w, &stactics_chardata_d },
{ 0xe000, 0xe3ff, stactics_videoram_e_w, &stactics_videoram_e },
{ 0xe400, 0xe7ff, MWA_RAM }, /* Unused */
{ 0xe800, 0xefff, stactics_chardata_e_w, &stactics_chardata_e },
{ 0xf000, 0xf3ff, stactics_videoram_f_w, &stactics_videoram_f },
{ 0xf400, 0xf7ff, MWA_RAM }, /* Unused */
{ 0xf800, 0xffff, stactics_chardata_f_w, &stactics_chardata_f },
{ -1 } /* end of table */
};
INPUT_PORTS_START( stactics_input_ports )
PORT_START /* IN0 */
/*PORT_BIT (0x80, IP_ACTIVE_HIGH, IPT_UNUSED ) see stactics_port_0_r */
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON2 )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON3 )
PORT_BIT (0x08, IP_ACTIVE_LOW, IPT_BUTTON4 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON5 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON6 )
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON7 )
PORT_START /* IN1 */
PORT_DIPNAME( 0x07, 0x07, "Coin Mech. 2", IP_KEY_NONE )
PORT_DIPSETTING( 0x07, "1 Coin/1 Play" )
PORT_DIPSETTING( 0x05, "2 Coins/1 Play" )
PORT_DIPSETTING( 0x01, "4 Coins/1 Play" )
PORT_DIPSETTING( 0x06, "1 Coin/2 Plays" )
PORT_DIPSETTING( 0x04, "1 Coin/3 Plays" )
PORT_DIPSETTING( 0x02, "1 Coin/4 Plays" )
PORT_DIPSETTING( 0x03, "1 Coin/6 Plays" )
PORT_DIPNAME( 0x38, 0x38, "Coin Mech. 1", IP_KEY_NONE )
PORT_DIPSETTING( 0x38, "1 Coin/1 Play" )
PORT_DIPSETTING( 0x28, "2 Coins/1 Play" )
PORT_DIPSETTING( 0x08, "4 Coins/1 Play" )
PORT_DIPSETTING( 0x30, "1 Coin/2 Plays" )
PORT_DIPSETTING( 0x20, "1 Coin/3 Plays" )
PORT_DIPSETTING( 0x10, "1 Coin/4 Plays" )
PORT_DIPSETTING( 0x18, "1 Coin/6 Plays" )
PORT_DIPNAME( 0x40, 0x40, "High Score Initial Entry", IP_KEY_NONE )
PORT_DIPSETTING( 0x40, "off" )
PORT_DIPSETTING( 0x00, "on" )
PORT_DIPNAME( 0x80, 0x80, "Advertising Sound", IP_KEY_NONE )
PORT_DIPSETTING( 0x80, "off" )
PORT_DIPSETTING( 0x00, "on" )
PORT_START /* IN2 */
/* This is accessed by stactics_port_2_r() */
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_COIN1 )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_COIN2 )
PORT_DIPNAME( 0x40, 0x40, "Free Play", IP_KEY_NONE )
PORT_DIPSETTING( 0x00, "on" )
PORT_DIPSETTING( 0x40, "off" )
PORT_BITX( 0x80, 0x80, IPT_DIPSWITCH_NAME | IPF_TOGGLE, "Test Switch", OSD_KEY_F2, IP_JOY_NONE, 0 )
PORT_DIPSETTING( 0x00, "on" )
PORT_DIPSETTING( 0x80, "off" )
PORT_START /* IN3 */
/* This is accessed by stactics_port_3_r() */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 )
/* PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_UNUSED ) */
PORT_DIPNAME( 0x04, 0x04, "Number of Barriers", IP_KEY_NONE )
PORT_DIPSETTING( 0x04, "4" )
PORT_DIPSETTING( 0x00, "6" )
PORT_DIPNAME( 0x08, 0x08, "Bonus Barriers", IP_KEY_NONE )
PORT_DIPSETTING( 0x08, "1" )
PORT_DIPSETTING( 0x00, "2" )
PORT_DIPNAME( 0x10, 0x00, "Extended Play", IP_KEY_NONE )
PORT_DIPSETTING( 0x00, "on" )
PORT_DIPSETTING( 0x10, "off" )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY )
/* PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER2 ) */
PORT_START /* FAKE */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY )
INPUT_PORTS_END
/* For the character graphics */
static struct GfxLayout gfxlayout =
{
8,8,
256,
1, /* 1 bit per pixel */
{ 0 },
{ 0, 1, 2, 3, 4, 5, 6, 7 },
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
8*8
};
/* For the LED Fire Beam (made up) */
static struct GfxLayout firelayout =
{
16,9,
256,
1, /* 1 bit per pixel */
{ 0 },
{ 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7 },
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8 },
8*9
};
static struct GfxDecodeInfo gfxdecodeinfo[] =
{
{ 0, 0, &gfxlayout, 0, 64*4 }, /* Dynamically decoded from RAM */
{ 0, 0, &gfxlayout, 1*2*16, 64*4 }, /* Dynamically decoded from RAM */
{ 0, 0, &gfxlayout, 2*2*16, 64*4 }, /* Dynamically decoded from RAM */
{ 0, 0, &gfxlayout, 3*2*16, 64*4 }, /* Dynamically decoded from RAM */
{ 0, 0, &firelayout, 0, 64*4 }, /* LED Fire beam (synthesized gfx) */
{ 0, 0, &gfxlayout, 0, 64*4 }, /* LED and Misc. Display characters */
{ -1 }
};
static struct MachineDriver machine_driver =
{
/* basic machine hardware */
{
{
CPU_8080,
1933560,
0,
readmem,writemem,0,0,
stactics_interrupt,1
},
},
60, DEFAULT_60HZ_VBLANK_DURATION,
1,
0,
/* video hardware */
32*8, 32*8, { 0*8, 32*8-1, 0*8, 32*8-1 },
gfxdecodeinfo,
16, 16*4*4*2,
stactics_vh_convert_color_prom,
VIDEO_TYPE_RASTER,
0,
stactics_vh_start,
stactics_vh_stop,
stactics_vh_screenrefresh,
/* sound hardware */
0,
0, /* Start audio */
0, /* Stop audio */
0 /* Update audio */
};
/***************************************************************************
Game driver(s)
***************************************************************************/
ROM_START( stactics_rom )
ROM_REGION(0x10000) /* 64k for code */
ROM_LOAD( "epr-218x", 0x0000, 0x0800, 0xb1186ad2 )
ROM_LOAD( "epr-219x", 0x0800, 0x0800, 0x3b86036d )
ROM_LOAD( "epr-220x", 0x1000, 0x0800, 0xc58702da )
ROM_LOAD( "epr-221x", 0x1800, 0x0800, 0xe327639e )
ROM_LOAD( "epr-222y", 0x2000, 0x0800, 0x24dd2bcc )
ROM_LOAD( "epr-223x", 0x2800, 0x0800, 0x7fef0940 )
ROM_REGION_DISPOSE(0x1060) /* temporary space for graphics (disposed after conversion) */
ROM_LOAD( "epr-217", 0x0000, 0x0800, 0x38259f5f ) /* LED fire beam data */
ROM_LOAD( "pr55", 0x0800, 0x0800, 0xf162673b ) /* timing PROM (unused) */
ROM_LOAD( "pr65", 0x1000, 0x0020, 0xa1506b9d ) /* timing PROM (unused) */
ROM_LOAD( "pr66", 0x1020, 0x0020, 0x78dcf300 ) /* timing PROM (unused) */
ROM_LOAD( "pr67", 0x1040, 0x0020, 0xb27874e7 ) /* LED timing ROM (unused) */
ROM_REGION(0x0800) /* color prom */
ROM_LOAD( "pr54", 0x0000, 0x0800, 0x9640bd6e ) /* color/priority prom */
ROM_END
struct GameDriver stactics_driver =
{
__FILE__,
0,
"stactics",
"Space Tactics",
"1981",
"Sega",
"Frank Palazzolo",
0,
&machine_driver,
0,
stactics_rom,
0, 0,
0,
0, /* sound_prom */
stactics_input_ports,
PROM_MEMORY_REGION(2), 0, 0,
ORIENTATION_DEFAULT,
0, 0
};
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