/*************************************************************************** Nibbler memory map (preliminary) 0000-03ff RAM 0400-07ff Video RAM (playfield 1) 0800-0bff Video RAM (playfield 2) 0c00-0fff Color RAM (4 bits per playfield) 1000-1fff Character generator RAM 3000-bfff ROM read: 2104 IN0 2105 IN1 2106 DSW 2107 IN2 * * IN0 (bits NOT inverted) * bit 7 : LEFT player 1 * bit 6 : RIGHT player 1 * bit 5 : UP player 1 * bit 4 : DOWN player 1 * bit 3 : ?\ * bit 2 : ?| debug * bit 1 : ?| commands? * bit 0 : ?/ * * * IN1 (bits NOT inverted) * bit 7 : LEFT player 2 (TABLE only) * bit 6 : RIGHT player 2 (TABLE only) * bit 5 : UP player 2 (TABLE only) * bit 4 : DOWN player 2 (TABLE only) * bit 3 : ?\ * bit 2 : ?| debug * bit 1 : ?| commands? * bit 0 : ?/ * * * DSW (bits NOT inverted) * bit 7 : * bit 6 : * bit 5 : Free Play * bit 4 : RACK TEST * bit 3 : COCKTAIL or UPRIGHT cabinet (0 = UPRIGHT) * bit 2 : * bit 1 :\ nr of lives * bit 0 :/ 00 = 3 01 = 4 10 = 5 11 = 6 * * * IN2 (bits NOT inverted) * bit 7 : START 1 * bit 6 : START 2 * bit 5 : ? * bit 4 : ? * bit 3 : ? * bit 2 : ? * bit 1 : ? * bit 0 : ? * write: 2000-2001 ? 2100-2103 ? 2200 ? 2300 ? Interrupts: VBlank causes an IRQ. Coin insertion causes a NMI. ***************************************************************************/ #include "driver.h" #include "vidhrdw/generic.h" extern int nibbler_interrupt(void); extern unsigned char *nibbler_videoram2; extern unsigned char *nibbler_characterram; extern void nibbler_videoram2_w(int offset,int data); extern void nibbler_characterram_w(int offset,int data); extern void nibbler_vh_screenrefresh(struct osd_bitmap *bitmap); extern void vanguard_vh_convert_color_prom(unsigned char *palette, unsigned char *colortable,const unsigned char *color_prom); static struct MemoryReadAddress readmem[] = { { 0x0000, 0x1fff, MRA_RAM }, { 0x3000, 0xbfff, MRA_ROM }, { 0xfffa, 0xffff, MRA_ROM }, { 0x2104, 0x2104, input_port_0_r }, /* IN0 */ { 0x2105, 0x2105, input_port_1_r }, /* IN1 */ { 0x2106, 0x2106, input_port_2_r }, /* DSW */ { 0x2107, 0x2107, input_port_3_r }, /* IN2 */ { -1 } /* end of table */ }; static struct MemoryWriteAddress writemem[] = { { 0x0000, 0x03ff, MWA_RAM }, { 0x0400, 0x07ff, videoram_w, &videoram, &videoram_size }, { 0x0800, 0x0bff, nibbler_videoram2_w, &nibbler_videoram2 }, { 0x0c00, 0x0fff, colorram_w, &colorram }, { 0x1000, 0x1fff, nibbler_characterram_w, &nibbler_characterram }, { 0x3000, 0xbfff, MWA_ROM }, { -1 } /* end of table */ }; static struct InputPort input_ports[] = { { /* IN0 */ 0x00, { 0, 0, 0, 0, OSD_KEY_DOWN, OSD_KEY_UP, OSD_KEY_RIGHT, OSD_KEY_LEFT }, { 0, 0, 0, 0, OSD_JOY_DOWN, OSD_JOY_UP, OSD_JOY_RIGHT, OSD_JOY_LEFT }, }, { /* IN1 */ 0x00, { 0, 0, 0, 0, 0, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0 } }, { /* DSW */ 0x00, { 0, 0, 0, 0, OSD_KEY_F1, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0 } }, { /* IN2 */ 0x00, { 0, 0, 0, 0, 0, 0, OSD_KEY_2, OSD_KEY_1 }, { 0, 0, 0, 0, 0, 0, 0, 0 } }, { -1 } /* end of table */ }; static struct TrakPort trak_ports[] = { { -1 } }; static struct KEYSet keys[] = { { 0, 5, "MOVE UP" }, { 0, 7, "MOVE LEFT" }, { 0, 6, "MOVE RIGHT" }, { 0, 4, "MOVE DOWN" }, { -1 } }; static struct DSW dsw[] = { { 2, 0x03, "LIVES", { "3", "4", "5", "6" } }, { 2, 0x04, "DIFFICULTY", { "EASY", "HARD" } }, { -1 } }; static struct GfxLayout charlayout = { 8,8, /* 8*8 characters */ 256, /* 256 characters */ 2, /* 2 bits per pixel */ { 0, 256*8*8 }, /* the two bitplanes are separated */ { 7*8, 6*8, 5*8, 4*8, 3*8, 2*8, 1*8, 0*8 }, { 0, 1, 2, 3, 4, 5, 6, 7 }, 8*8 /* every char takes 8 consecutive bytes */ }; static struct GfxLayout charlayout2 = { 8,8, /* 8*8 characters */ 256, /* 256 characters */ 2, /* 2 bits per pixel */ { 0, 512*8*8 }, /* the two bitplanes are separated */ { 7*8, 6*8, 5*8, 4*8, 3*8, 2*8, 1*8, 0*8 }, { 0, 1, 2, 3, 4, 5, 6, 7 }, 8*8 /* every char takes 8 consecutive bytes */ }; static struct GfxDecodeInfo gfxdecodeinfo[] = { { 0, 0xf000, &charlayout, 0, 8 }, /* the game dynamically modifies this */ { 1, 0x0800, &charlayout2, 8*4, 8 }, { -1 } /* end of array */ }; static unsigned char color_prom[] = { /* foreground colors */ 0x00, 0x07, 0xff, 0xC5, 0x00, 0x38, 0xad, 0xA8, 0x00, 0xad, 0x3f, 0xC0, 0x00, 0xff, 0x07, 0xFF, 0x00, 0x3f, 0xc0, 0xAD, 0x00, 0xff, 0xc5, 0x3F, 0x00, 0xff, 0x3f, 0x07, 0x00, 0x07, 0xc5, 0x3F, /* background colors */ 0x00, 0x3f, 0xff, 0xC0, 0x00, 0xc7, 0x38, 0x05, 0x00, 0x07, 0xc0, 0x3F, 0x00, 0x3f, 0xe0, 0x05, 0x00, 0x07, 0xac, 0xC0, 0x00, 0xff, 0xc5, 0x2F, 0x00, 0xc0, 0x05, 0x2F, 0x00, 0x3f, 0x05, 0xC7 }; static struct MachineDriver machine_driver = { /* basic machine hardware */ { { CPU_M6502, 1000000, /* 1 Mhz ???? */ 0, readmem,writemem,0,0, nibbler_interrupt,1 } }, 60, 0, /* video hardware */ 32*8, 32*8, { 2*8, 30*8-1, 0*8, 32*8-1 }, gfxdecodeinfo, 256,16*4, vanguard_vh_convert_color_prom, 0, generic_vh_start, generic_vh_stop, nibbler_vh_screenrefresh, /* sound hardware */ 0, 0, 0, 0, 0 }; /*************************************************************************** Game driver(s) ***************************************************************************/ ROM_START( nibbler_rom ) ROM_REGION(0x10000) /* 64k for code */ ROM_LOAD( "IC12", 0x3000, 0x1000 ) ROM_LOAD( "IC07", 0x4000, 0x1000 ) ROM_LOAD( "IC08", 0x5000, 0x1000 ) ROM_LOAD( "IC09", 0x6000, 0x1000 ) ROM_LOAD( "IC10", 0x7000, 0x1000 ) ROM_LOAD( "IC14", 0x8000, 0x1000 ) ROM_LOAD( "IC15", 0x9000, 0x1000 ) ROM_LOAD( "IC16", 0xa000, 0x1000 ) ROM_LOAD( "IC17", 0xb000, 0x1000 ) ROM_LOAD( "IC14", 0xf000, 0x1000 ) /* for the reset and interrupt vectors */ ROM_REGION(0x2000) /* temporary space for graphics (disposed after conversion) */ ROM_LOAD( "IC50", 0x0000, 0x1000 ) ROM_LOAD( "IC51", 0x1000, 0x1000 ) /* sound? */ /* ROM_LOAD( "IC52", 0x????, 0x0800 ) */ /* ROM_LOAD( "IC53", 0x????, 0x0800 ) */ ROM_END ROM_START( fantasy_rom ) ROM_REGION(0x10000) /* 64k for code */ ROM_LOAD( "ic12.cpu", 0x3000, 0x1000 ) ROM_LOAD( "ic07.cpu", 0x4000, 0x1000 ) ROM_LOAD( "ic08.cpu", 0x5000, 0x1000 ) ROM_LOAD( "ic09.cpu", 0x6000, 0x1000 ) ROM_LOAD( "ic10.cpu", 0x7000, 0x1000 ) ROM_LOAD( "ic14.cpu", 0x8000, 0x1000 ) ROM_LOAD( "ic15.cpu", 0x9000, 0x1000 ) ROM_LOAD( "ic16.cpu", 0xa000, 0x1000 ) ROM_LOAD( "ic17.cpu", 0xb000, 0x1000 ) ROM_LOAD( "ic14.cpu", 0xf000, 0x1000 ) /* for the reset and interrupt vectors */ ROM_REGION(0x2000) /* temporary space for graphics (disposed after conversion) */ ROM_LOAD( "ic50.vid", 0x0000, 0x1000 ) ROM_LOAD( "ic51.vid", 0x1000, 0x1000 ) /* sound? */ /* ROM_LOAD( "ic51.cpu", 0x????, 0x0800 ) */ /* ROM_LOAD( "ic52.cpu", 0x????, 0x0800 ) */ /* ROM_LOAD( "ic53.cpu", 0x????, 0x0800 ) */ /* ROM_LOAD( "ic07.dau", 0x????, 0x0800 ) */ /* ROM_LOAD( "ic08.dau", 0x????, 0x0800 ) */ /* ROM_LOAD( "ic11.dau", 0x????, 0x0800 ) */ ROM_END static int hiload(const char *name) { /* check if the hi score table has already been initialized */ if (memcmp(&RAM[0x0290],"\x00\x50\x00\x00",4) == 0 && memcmp(&RAM[0x02b4],"\x00\x05\x00\x00",4) == 0) { FILE *f; if ((f = fopen(name,"rb")) != 0) { fread(&RAM[0x0290],1,4*10,f); fread(&RAM[0x02d0],1,3*10,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[0x0290],1,4*10,f); fwrite(&RAM[0x02d0],1,3*10,f); fclose(f); } } struct GameDriver nibbler_driver = { "Nibbler", "nibbler", "NICOLA SALMORIA\nBRIAN LEVINE\nMIRKO BUFFONI", &machine_driver, nibbler_rom, 0, 0, 0, input_ports, trak_ports, dsw, keys, color_prom, 0, 0, 8*13, 8*16, hiload, hisave }; struct GameDriver fantasy_driver = { "Fantasy", "fantasy", "NICOLA SALMORIA\nBRIAN LEVINE\nMIRKO BUFFONI", &machine_driver, fantasy_rom, 0, 0, 0, input_ports, trak_ports, dsw, keys, color_prom, 0, 0, 8*13, 8*16, 0, 0 };