/*************************************************************************** Modified from original schematics... MISSILE COMMAND --------------- HEX R/W D7 D6 D5 D4 D3 D2 D2 D0 function ---------+-----+------------------------+------------------------ 0000-01FF R/W D D D D D D D D 512 bytes working ram 0200-05FF R/W D D D D D D D D 3rd color bit region of screen ram. Each bit of every odd byte is the low color bit for the bottom scanlines The schematics say that its for the bottom 32 scanlines, although the code only accesses $401-$5FF for the bottom 8 scanlines... Pretty wild, huh? 0600-063F R/W D D D D D D D D More working ram. 0640-3FFF R/W D D D D D D D D 2-color bit region of screen ram. Writes to 4 bytes each and mapped to $1900-$FFFF 1900-FFFF R/W D D 2-color bit region of screen ram Only accessed with LDA ($ZZ,X) and STA ($ZZ,X) Those instructions take longer than 5 cycles. ---------+-----+------------------------+------------------------ 4000-400F R/W D D D D D D D D POKEY ports. ----------------------------------------------------------------- 4008 R D D D D D D D D Game Option switches ----------------------------------------------------------------- 4800 R D Right coin 4800 R D Center coin 4800 R D Left coin 4800 R D 1 player start 4800 R D 2 player start 4800 R D 2nd player left fire(cocktail) 4800 R D 2nd player center fire " 4800 R D 2nd player right fire " ---------+-----+------------------------+------------------------ 4800 R D D D D Horiz trackball displacement if ctrld=high. 4800 R D D D D Vert trackball displacement if ctrld=high. ---------+-----+------------------------+------------------------ 4800 W D Unused ?? 4800 W D screen flip 4800 W D left coin counter 4800 W D center coin counter 4800 W D right coin counter 4800 W D 2 player start LED. 4800 W D 1 player start LED. 4800 W D CTRLD, 0=read switches, 1= read trackball. ---------+-----+------------------------+------------------------ 4900 R D VBLANK read 4900 R D Self test switch input. 4900 R D SLAM switch input. 4900 R D Horiz trackball direction input. 4900 R D Vert trackball direction input. 4900 R D 1st player left fire. 4900 R D 1st player center fire. 4900 R D 1st player right fire. ---------+-----+------------------------+------------------------ 4A00 R D D D D D D D D Pricing Option switches. 4B00-4B07 W D D D D Color RAM. 4C00 W Watchdog. 4D00 W Interrupt acknowledge. ---------+-----+------------------------+------------------------ 5000-7FFF R D D D D D D D D Program. ---------+-----+------------------------+------------------------ MISSILE COMMAND SWITCH SETTINGS (Atari, 1980) --------------------------------------------- GAME OPTIONS: (8-position switch at R8) 1 2 3 4 5 6 7 8 Meaning ------------------------------------------------------------------------- Off Off Game starts with 7 cities On On Game starts with 6 cities On Off Game starts with 5 cities Off On Game starts with 4 cities On No bonus credit Off 1 bonus credit for 4 successive coins On Large trak-ball input Off Mini Trak-ball input On Off Off Bonus city every 8000 pts On On On Bonus city every 10000 pts Off On On Bonus city every 12000 pts On Off On Bonus city every 14000 pts Off Off On Bonus city every 15000 pts On On Off Bonus city every 18000 pts Off On Off Bonus city every 20000 pts Off Off Off No bonus cities On Upright Off Cocktail PRICING OPTIONS: (8-position switch at R10) 1 2 3 4 5 6 7 8 Meaning ------------------------------------------------------------------------- On On 1 coin 1 play Off On Free play On Off 2 coins 1 play Off Off 1 coin 2 plays On On Right coin mech * 1 Off On Right coin mech * 4 On Off Right coin mech * 5 Off Off Right coin mech * 6 On Center coin mech * 1 Off Center coin mech * 2 On On English Off On French On Off German Off Off Spanish On ( Unused ) Off ( Unused ) ******************************************************************************************/ #include "driver.h" extern int missile_init_machine(const char *gamename); extern int missile_interrupt(void); extern int missile_r(int offset); extern void missile_w(int offset, int data); extern int milliped_sh_start(void); extern void milliped_sh_stop(void); extern void milliped_sh_update(void); extern int missile_vh_start(void); extern void missile_vh_stop(void); extern void missile_vh_update(struct osd_bitmap *bitmap); static struct MemoryReadAddress readmem[] = { { 0x0000, 0xFFFF, missile_r }, { -1 } /* end of table */ }; static struct MemoryWriteAddress writemem[] = { { 0x0000, 0xFFFF, missile_w }, { -1 } /* end of table */ }; static struct InputPort input_ports[] = { { /* IN0 - 4800, all inverted */ /* 80 = right coin 40 = center coin 20 = left coin 10 = 1 player start 08 = 2 player start 04 = 2nd player left fire (cocktail) 02 = 2nd player center fire (cocktail) 01 = 2nd player right fire (cocktail) */ 0xFF, {OSD_KEY_D, OSD_KEY_S, OSD_KEY_A, OSD_KEY_2, OSD_KEY_1, OSD_KEY_3, 0, 0}, {0, 0, 0, 0, 0, 0, 0, 0 } }, { /* IN1 - 4900, all inverted */ /* 80 = vbl read 40 = self test 20 = SLAM switch 10 = horiz trackball input 08 = vertical trackball input 04 = 1st player left fire 02 = 1st player center fire 01 = 1st player right fire */ 0x67, { OSD_KEY_D, OSD_KEY_S, OSD_KEY_A, 0, 0, OSD_KEY_F6, OSD_KEY_F5, 0}, { 0, 0, 0, 0, 0, 0, 0, 0 } }, { /* IN2 - 4A00 - Pricing Option switches, all inverted */ 0x02, { 0, 0, 0, 0, 0, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0 } }, { /* IN3 4008 Game Option switches, all inverted */ 0x00, { 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[] = { #if 0 { X_AXIS, 1, 1.0, missile_trakball_x }, { Y_AXIS, 1, 1.0, missile_trakball_y }, #endif { -1 } }; static struct KEYSet keys[] = { { 1, 2, "LEFT FIRE" }, { 1, 1, "CENTER FIRE" }, { 1, 0, "RIGHT FIRE" }, { -1 } }; static struct DSW dsw[] = { { 2, 0x60, "LANGUAGE", { "ENGLISH", "GERMAN", "FRENCH", "SPANISH" } }, { 3, 0x03, "NUMBER OF CITIES", { "6", "4", "5", "7" } }, /* { 3, 0x08, "TRACKBALL", { "LARGE", "MINI" } }, not very useful */ { 3, 0x70, "BONUS AT", { "10000", "12000", "14000", "15000", "18000", "20000", "8000", "0" } }, /* { 3, 0x80, "MODEL", { "UPRIGHT", "COCKTAIL" } }, */ { -1 } }; /* Missile Command has only minimal character mapped graphics, this definition is here */ /* mainly for the dip switch menu */ static struct GfxLayout charlayout = { 8,8, /* 8*8 characters */ 50, /* 50 characters */ 1, /* 1 bit per pixel */ { 0 }, { 0, 1, 2, 3, 4, 5, 6, 7 }, /* characters are upside down */ { 7*8, 6*8, 5*8, 4*8, 3*8, 2*8, 1*8, 0*8 }, 8*8 /* every char takes 8 consecutive bytes */ }; static struct GfxDecodeInfo gfxdecodeinfo[] = { { 0, 0x731A, &charlayout, 0, 0x10 }, { -1 } /* end of array */ }; static unsigned char palette[] = { 0, 0, 0, /* extra black for Macs */ 0xFF,0xFF,0xFF, /* white */ 0xFF,0xFF,0x00, /* yellow */ 0xFF,0x00,0xFF, /* magenta */ 0xFF,0x00,0x00, /* red */ 0x00,0xFF,0xFF, /* cyan */ 0x00,0xFF,0x00, /* green */ 0x00,0x00,0xFF, /* blue */ 0x00,0x00,0x00 /* black */ }; static struct MachineDriver machine_driver = { /* basic machine hardware */ { { CPU_M6502, 1000000, /* 1 Mhz ???? */ 0, readmem,writemem,0,0, missile_interrupt, 12 } }, 60, missile_init_machine, /* video hardware */ 256, 231, { 0, 255, 0, 230 }, gfxdecodeinfo, sizeof(palette)/3, 0, 0, 0, missile_vh_start, missile_vh_stop, missile_vh_update, /* sound hardware */ 0, 0, milliped_sh_start, milliped_sh_stop, milliped_sh_update }; /*************************************************************************** Game driver(s) ***************************************************************************/ ROM_START( missile_rom ) ROM_REGION(0x10000) /* 64k for code */ ROM_LOAD( "035820.02", 0x5000, 0x0800 ) ROM_LOAD( "035821.02", 0x5800, 0x0800 ) ROM_LOAD( "035822.02", 0x6000, 0x0800 ) ROM_LOAD( "035823.02", 0x6800, 0x0800 ) ROM_LOAD( "035824.02", 0x7000, 0x0800 ) ROM_LOAD( "035825.02", 0x7800, 0x0800 ) ROM_LOAD( "035825.02", 0xF800, 0x0800 ) /* for interrupt vectors */ ROM_END static int hiload(const char *name) { FILE *f; /* check if the hi score table has already been initialized */ if (memcmp(&RAM[0x002C],"\x47\x4A\x4C", 3) == 0 && memcmp(&RAM[0x0044],"\x50\x69\x00", 3) == 0){ if ((f = fopen(name,"rb")) != 0){ fread(&RAM[0x002C],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[0x002C],1,6*8,f); fclose(f); } } struct GameDriver missile_driver = { "Missile Command", "missile", "RAY GIARRATANA", &machine_driver, missile_rom, 0, 0, 0, input_ports, trak_ports, dsw, keys, 0, palette, 0, 8*13, 8*12, hiload, hisave };