/*************************************************************************** Centipede Memory map and Dip Switches ------------------------------------- Memory map for Centipede directly from the Atari schematics (1981). Address R/W D7 D6 D5 D4 D3 D2 D1 D0 Function -------------------------------------------------------------------------------------- 0000-03FF D D D D D D D D RAM -------------------------------------------------------------------------------------- 0400-07BF D D D D D D D D Playfield RAM 07C0-07CF D D D D D D D D Motion Object Picture 07D0-07DF D D D D D D D D Motion Object Vert. 07E0-07EF D D D D D D D D Motion Object Horiz. 07F0-07FF D D D D D D Motion Object Color -------------------------------------------------------------------------------------- 0800 R D D D D D D D D Option Switch 1 (0 = On) 0801 R D D D D D D D D Option Switch 2 (0 = On) -------------------------------------------------------------------------------------- 0C00 R D D D D D Horizontal Mini-Track Ball tm Inputs R D VBLANK (1 = VBlank) R D Self-Test (0 = On) R D Cocktail Cabinet (1 = Cocktail) 0C01 R D D D R,C,L Coin Switches (0 = On) R D SLAM (0 = On) R D Player 2 Fire Switch (0 = On) R D Player 1 Fire Switch (0 = On) R D Player 2 Start Switch (0 = On) R D Player 1 Start Switch (0 = On) 0C02 R D D D D D Vertical Mini-Track Ball tm Inputs 0C03 R D D D D Player 1 Joystick (R,L,Down,Up) R D D D D Player 2 Joystick (0 = On) -------------------------------------------------------------------------------------- 1000-100F R/W D D D D D D D D Custom Audio Chip 1404 W D D D D Playfield Color RAM 140C W D D D D Motion Object Color RAM -------------------------------------------------------------------------------------- 1600 W D D D D D D D D EA ROM Address & Data Latch 1680 W D D D D EA ROM Control Latch 1700 R D D D D D D D D EA ROM Read Data -------------------------------------------------------------------------------------- 1800 W IRQ Acknowledge -------------------------------------------------------------------------------------- 1C00 W D Left Coin Counter (1 = On) 1C01 W D Center Coin Counter (1 = On) 1C02 W D Right Coin Counter (1 = On) 1C03 W D Player 1 Start LED (0 = On) 1C04 W D Player 2 Start LED (0 = On) 1C07 W D Track Ball Flip Control (0 = Player 1) -------------------------------------------------------------------------------------- 2000 W WATCHDOG 2400 W Clear Mini-Track Ball Counters -------------------------------------------------------------------------------------- 2000-3FFF R Program ROM -------------------------------------------------------------------------------------- -EA ROM is an Erasable Reprogrammable rom to save the top 3 high scores and other stuff. Dip switches at N9 on the PCB 8 7 6 5 4 3 2 1 Option ------------------------------------------------------------------------------------- On On English $ On Off German Off On French Off Off Spanish ------------------------------------------------------------------------------------- On On 2 lives per game On Off 3 lives per game $ Off On 4 lives per game Off Off 5 lives per game ------------------------------------------------------------------------------------- Bonus life granted at every: On On 10,000 points On Off 12.000 points $ Off On 15,000 points Off Off 20,000 points ------------------------------------------------------------------------------------- On Hard game difficulty Off Easy game difficulty $ ------------------------------------------------------------------------------------- On 1-credit minimum $ Off 2-credit minimum ------------------------------------------------------------------------------------- $ = Manufacturer's suggested settings Dip switches at N8 on the PCB 8 7 6 5 4 3 2 1 Option ------------------------------------------------------------------------------------- On On Free play On Off 1 coin for 2 credits Off On 1 coin for 1 credit $ Off Off 2 coins for 1 credit ------------------------------------------------------------------------------------- On On Right coin mech X 1 $ On Off Right coin mech X 4 Off On Right coin mech X 5 Off Off Right coin mech X 6 ------------------------------------------------------------------------------------- On Left coin mech X 1 $ Off Left coin mech X 2 ------------------------------------------------------------------------------------- On On On No bonus coins $ On On Off For every 2 coins inserted, game logic adds 1 more coin On Off On For every 4 coins inserted, game logic adds 1 more coin On Off Off For every 4 coins inserted, game logic adds 2 more coin Off On On For every 5 coins inserted, game logic adds 1 more coin Off On Off For every 3 coins inserted, game logic adds 1 more coin ------------------------------------------------------------------------------------- $ = Manufacturer's suggested settings ***************************************************************************/ #include "driver.h" #include "vidhrdw/generic.h" extern int centiped_init_machine(const char *gamename); extern int centiped_IN0_r(int offset); extern int centiped_rand_r(int offset); extern int centiped_interrupt(void); extern int centiped_trakball_x(int data); extern int centiped_trakball_y(int data); extern unsigned char *centiped_charpalette,*centiped_spritepalette; extern void centiped_vh_convert_color_prom(unsigned char *palette, unsigned char *colortable,const unsigned char *color_prom); extern void centiped_vh_screenrefresh(struct osd_bitmap *bitmap); extern void centiped_vh_charpalette_w(int offset, int data); extern void milliped_pokey1_w(int offset,int data); extern int milliped_sh_start(void); extern void milliped_sh_stop(void); extern void milliped_sh_update(void); static struct MemoryReadAddress readmem[] = { { 0x0000, 0x03ff, MRA_RAM }, { 0x0400, 0x07ff, MRA_RAM }, { 0x2000, 0x3fff, MRA_ROM }, { 0xf800, 0xffff, MRA_ROM }, /* for the reset / interrupt vectors */ { 0x0c00, 0x0c00, centiped_IN0_r }, /* IN0 */ { 0x0c01, 0x0c01, input_port_1_r }, /* IN1 */ { 0x0c02, 0x0c02, input_trak_1_r }, /* IN2 */ { 0x0c03, 0x0c03, input_port_3_r }, /* IN3 */ { 0x0800, 0x0800, input_port_4_r }, /* DSW1 */ { 0x0801, 0x0801, input_port_5_r }, /* DSW2 */ { 0x100a, 0x100a, centiped_rand_r }, { -1 } /* end of table */ }; static struct MemoryWriteAddress writemem[] = { { 0x0000, 0x03ff, MWA_RAM }, { 0x0400, 0x07bf, videoram_w, &videoram, &videoram_size }, { 0x07c0, 0x07ff, MWA_RAM, &spriteram }, { 0x1000, 0x100f, milliped_pokey1_w }, { 0x1404, 0x1407, centiped_vh_charpalette_w, ¢iped_charpalette }, { 0x140c, 0x140f, MWA_RAM, ¢iped_spritepalette }, { 0x1800, 0x1800, MWA_NOP }, { 0x1c00, 0x1c07, MWA_NOP }, { 0x1680, 0x1680, MWA_NOP }, { 0x2000, 0x2000, MWA_NOP }, { 0x2000, 0x3fff, MWA_ROM }, { -1 } /* end of table */ }; static struct InputPort input_ports[] = { { /* IN0 */ 0x20, { 0, 0, 0, 0, 0, OSD_KEY_F2, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0 } }, { /* IN1 */ 0xff, { OSD_KEY_1, OSD_KEY_2, OSD_KEY_CONTROL, OSD_KEY_CONTROL, 0, 0, OSD_KEY_3, 0 }, { 0, 0, OSD_JOY_FIRE, OSD_JOY_FIRE, 0, 0, 0, 0 } }, { /* IN2 */ 0x00, { 0, 0, 0, 0, 0, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0 } }, { /* IN3 */ 0xff, { OSD_KEY_UP, OSD_KEY_DOWN, OSD_KEY_LEFT, OSD_KEY_RIGHT, OSD_KEY_UP, OSD_KEY_DOWN, OSD_KEY_LEFT, OSD_KEY_RIGHT }, { OSD_JOY_UP, OSD_JOY_DOWN, OSD_JOY_LEFT, OSD_JOY_RIGHT, OSD_JOY_UP, OSD_JOY_DOWN, OSD_JOY_LEFT, OSD_JOY_RIGHT } }, { /* DSW1 */ 0x54, { 0, 0, 0, 0, 0, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0 } }, { /* DSW2 */ 0x02, { 0, 0, 0, 0, 0, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0 } }, { -1 } /* end of table */ }; static struct TrakPort trak_ports[] = { { X_AXIS, 1, 1.0, centiped_trakball_x }, { Y_AXIS, 1, 1.0, centiped_trakball_y }, { -1 } }; static struct KEYSet keys[] = { { 3, 0, "MOVE UP" }, { 3, 2, "MOVE LEFT" }, { 3, 3, "MOVE RIGHT" }, { 3, 1, "MOVE DOWN" }, { 1, 2, "PL1 FIRE" }, { 1, 3, "PL2 FIRE" }, { -1 } }; static struct DSW dsw[] = { { 4, 0x0c, "LIVES", { "2", "3", "4", "5" } }, { 4, 0x30, "BONUS", { "10000", "12000", "15000", "20000" } }, { 4, 0x40, "DIFFICULTY", { "HARD", "EASY" }, 1 }, { 4, 0x03, "LANGUAGE", { "ENGLISH", "GERMAN", "FRENCH", "SPANISH" } }, { -1 } }; static struct GfxLayout charlayout = { 8,8, /* 8*8 characters */ 256, /* 256 characters */ 2, /* 2 bits per pixel */ { 256*8*8, 0 }, /* the two bitplanes are separated */ { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 }, { 7, 6, 5, 4, 3, 2, 1, 0 }, 8*8 /* every char takes 8 consecutive bytes */ }; static struct GfxLayout spritelayout = { 16,8, /* 16*8 sprites */ 128, /* 64 sprites */ 2, /* 2 bits per pixel */ { 128*16*8, 0 }, /* the two bitplanes are separated */ { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 }, { 7, 6, 5, 4, 3, 2, 1, 0 }, 16*8 /* every sprite takes 16 consecutive bytes */ }; static struct GfxDecodeInfo gfxdecodeinfo[] = { { 1, 0x0000, &charlayout, 4, 1 }, { 1, 0x0000, &spritelayout, 0, 1 }, { -1 } /* end of array */ }; static struct MachineDriver machine_driver = { /* basic machine hardware */ { { CPU_M6502, 1000000, /* 1 Mhz ???? */ 0, readmem,writemem,0,0, centiped_interrupt,1 } }, 60, centiped_init_machine, /* video hardware */ 32*8, 32*8, { 1*8, 31*8-1, 0*8, 32*8-1 }, gfxdecodeinfo, 16, 2*4, centiped_vh_convert_color_prom, 0, generic_vh_start, generic_vh_stop, centiped_vh_screenrefresh, /* sound hardware */ 0, 0, milliped_sh_start, milliped_sh_stop, milliped_sh_update }; /*************************************************************************** Game driver(s) ***************************************************************************/ ROM_START( centiped_rom ) ROM_REGION(0x10000) /* 64k for code */ ROM_LOAD( "%s.307", 0x2000, 0x0800 ) ROM_LOAD( "%s.308", 0x2800, 0x0800 ) ROM_LOAD( "%s.309", 0x3000, 0x0800 ) ROM_LOAD( "%s.310", 0x3800, 0x0800 ) ROM_LOAD( "%s.310", 0xf800, 0x0800 ) /* for the reset and interrupt vectors */ ROM_REGION(0x1000) /* temporary space for graphics (disposed after conversion) */ ROM_LOAD( "%s.211", 0x0000, 0x0800 ) ROM_LOAD( "%s.212", 0x0800, 0x0800 ) ROM_END static int hiload(const char *name) { /* check if the hi score table has already been initialized */ if (memcmp(&RAM[0x0002],"\x43\x65\x01",3) == 0 && memcmp(&RAM[0x0017],"\x02\x21\x01",3) == 0) { FILE *f; if ((f = fopen(name,"rb")) != 0) { fread(&RAM[0x0002],1,6*8,f); fclose(f); } return 1; } else return 0; /* we can't load the hi scores yet */ } static void hisave(const char *name) { FILE *f; if ((f = fopen(name,"wb")) != 0) { fwrite(&RAM[0x0002],1,6*8,f); fclose(f); } } struct GameDriver centiped_driver = { "Centipede", "centiped", "IVAN MACKINTOSH\nEDWARD MASSEY\nPETE RITTWAGE\nNICOLA SALMORIA\nMIRKO BUFFONI", &machine_driver, centiped_rom, 0, 0, 0, input_ports, trak_ports, dsw, keys, 0, 0, 0, 8*13, 8*16, hiload, hisave };