diff options
Diffstat (limited to 'trunk/src/mame/drivers/jokrwild.c')
-rw-r--r-- | trunk/src/mame/drivers/jokrwild.c | 569 |
1 files changed, 569 insertions, 0 deletions
diff --git a/trunk/src/mame/drivers/jokrwild.c b/trunk/src/mame/drivers/jokrwild.c new file mode 100644 index 00000000000..9faa2ed480d --- /dev/null +++ b/trunk/src/mame/drivers/jokrwild.c @@ -0,0 +1,569 @@ +/****************************************************************************** + + JOKER'S WILD - SIGMA + -------------------- + + Preliminary driver by Roberto Fresca. + + + Games running on this hardware: + + * Joker's Wild (encrypted). 1988, Sigma. + + +******************************************************************************* + + + Hardware Notes (guessed): + ------------------------ + + CPU: 1x M6809 + Video: 1x M6845 CRTC or similar. + I/O: 2x PIAs ?? (there is code to initialize PIAs at $8033) + + +******************************************************************************* + + + *** Game Notes *** + + Game is trying to boot, and after approx. 90 seconds an error message appear + on screen: "Random number generator is defective", then stuck here. + + See code at $9859 + + PIAs are commented out just to see the R/W on error log. + + +******************************************************************************* + + -------------------- + *** Memory Map *** + -------------------- + + 0x0000 - 0x07FF ; Video RAM. + 0x2000 - 0x27FF ; Color RAM. + 0x4004 - 0x4007 ; PIA?. + 0x4008 - 0x400B ; PIA?. + 0x6000 - 0x6001 ; M6845 CRTC. + 0x8000 - 0xFFFF ; ROM space. + + + *** MC6545 Initialization *** + ---------------------------------------------------------------------------------------------------------------------- + register: R00 R01 R02 R03 R04 R05 R06 R07 R08 R09 R10 R11 R12 R13 R14 R15 R16 R17 + ---------------------------------------------------------------------------------------------------------------------- + value: 0x20 0x18 0x1B 0x64 0x20 0x07 0x1A 0x1D 0x00 0x07 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00. + + +******************************************************************************* + + + DRIVER UPDATES: + + + [2008-10-30] + + - Fixed graphics to 2 bits per pixel. + + + [2008-10-25] + + - Initial release. + - ROMs load OK. + - Proper ROMs decryption. + - Added MC6845 CRTC. + - Video RAM OK. + - Added technical notes. + + + TODO: + + - RND number generator. + - Inputs + - Sound. + - A lot of work. + + +*******************************************************************************/ + + +#define MASTER_CLOCK XTAL_8MHz /* guess */ + +#include "emu.h" +#include "cpu/m6809/m6809.h" +#include "video/mc6845.h" +#include "machine/6821pia.h" +#include "machine/nvram.h" + + +class jokrwild_state : public driver_device +{ +public: + jokrwild_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag) { } + + UINT8 *m_videoram; + UINT8 *m_colorram; + tilemap_t *m_bg_tilemap; +}; + + +/************************* +* Video Hardware * +*************************/ + + +static WRITE8_HANDLER( jokrwild_videoram_w ) +{ + jokrwild_state *state = space->machine().driver_data<jokrwild_state>(); + state->m_videoram[offset] = data; + tilemap_mark_tile_dirty(state->m_bg_tilemap, offset); +} + + +static WRITE8_HANDLER( jokrwild_colorram_w ) +{ + jokrwild_state *state = space->machine().driver_data<jokrwild_state>(); + state->m_colorram[offset] = data; + tilemap_mark_tile_dirty(state->m_bg_tilemap, offset); +} + + +static TILE_GET_INFO( get_bg_tile_info ) +{ + jokrwild_state *state = machine.driver_data<jokrwild_state>(); +/* - bits - + 7654 3210 + xx-- ---- bank select. + ---- xxxx color code. +*/ + int attr = state->m_colorram[tile_index]; + int code = state->m_videoram[tile_index] | ((attr & 0xc0) << 2); + int color = (attr & 0x0f); + + SET_TILE_INFO( 0, code , color , 0); +} + + +static VIDEO_START( jokrwild ) +{ + jokrwild_state *state = machine.driver_data<jokrwild_state>(); + state->m_bg_tilemap = tilemap_create(machine, get_bg_tile_info, tilemap_scan_rows, 8, 8, 24, 26); +} + + +static SCREEN_UPDATE( jokrwild ) +{ + jokrwild_state *state = screen->machine().driver_data<jokrwild_state>(); + tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, 0, 0); + return 0; +} + + +static PALETTE_INIT( jokrwild ) +{ + //missing proms +} + + +/************************* +* Machine Init * +*************************/ + + +/***************************** +* Read/Write Handlers * +*****************************/ + +static READ8_HANDLER( rng_r ) +{ + if(cpu_get_pc(&space->device()) == 0xab32) + return (offset == 0) ? 0x9e : 0x27; + + if(cpu_get_pc(&space->device()) == 0xab3a) + return (offset == 2) ? 0x49 : 0x92; + + return space->machine().rand() & 0xff; +} + +/************************* +* Memory Map Information * +*************************/ + +static ADDRESS_MAP_START( jokrwild_map, AS_PROGRAM, 8 ) + AM_RANGE(0x0000, 0x03ff) AM_RAM_WRITE(jokrwild_videoram_w) AM_BASE_MEMBER(jokrwild_state, m_videoram) + AM_RANGE(0x0400, 0x07ff) AM_RAM //FIXME: backup RAM + AM_RANGE(0x2000, 0x23ff) AM_RAM_WRITE(jokrwild_colorram_w) AM_BASE_MEMBER(jokrwild_state, m_colorram) + AM_RANGE(0x2400, 0x27ff) AM_RAM //stack RAM + AM_RANGE(0x4004, 0x4007) AM_DEVREADWRITE_MODERN("pia0", pia6821_device, read, write) + AM_RANGE(0x4008, 0x400b) AM_DEVREADWRITE_MODERN("pia1", pia6821_device, read, write) //optical sensor is here +// AM_RANGE(0x4010, 0x4010) AM_READNOP /* R ???? */ + AM_RANGE(0x6000, 0x6000) AM_DEVWRITE_MODERN("crtc", mc6845_device, address_w) + AM_RANGE(0x6001, 0x6001) AM_DEVREADWRITE_MODERN("crtc", mc6845_device, register_r, register_w) + AM_RANGE(0x6100, 0x6100) AM_READ_PORT("SW1") + AM_RANGE(0x6200, 0x6203) AM_READ(rng_r)//another PIA? + AM_RANGE(0x6300, 0x6300) AM_READ_PORT("SW2") + AM_RANGE(0x8000, 0xffff) AM_ROM +ADDRESS_MAP_END + + +/* I/O byte R/W + + + ----------------- + + unknown writes: + + 4004-400b R/W ; 2x PIAs? + 4010 R ; unknown. + + 6100 R/W ; unknown. + 6200-6203 R/W ; extra PIA? + 6300 R ; unknown. + + +*/ + +/************************* +* Input Ports * +*************************/ + +static INPUT_PORTS_START( jokrwild ) + PORT_START("IN0") + PORT_DIPNAME( 0x01, 0x01, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x01, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x02, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x04, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x08, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x10, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x20, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x40, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x80, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + +/* PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("0-1") PORT_CODE(KEYCODE_1) + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("0-2") PORT_CODE(KEYCODE_2) + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("0-3") PORT_CODE(KEYCODE_3) + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("0-4") PORT_CODE(KEYCODE_4) + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("0-5") PORT_CODE(KEYCODE_5) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("0-6") PORT_CODE(KEYCODE_6) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("0-7") PORT_CODE(KEYCODE_7) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("0-8") PORT_CODE(KEYCODE_8) +*/ + PORT_START("IN1") + PORT_DIPNAME( 0x01, 0x01, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x01, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x02, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x04, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x08, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x10, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x20, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x40, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x80, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) +/* PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("1-1") PORT_CODE(KEYCODE_Q) + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("1-2") PORT_CODE(KEYCODE_W) + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("1-3") PORT_CODE(KEYCODE_E) + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("1-4") PORT_CODE(KEYCODE_R) + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("1-5") PORT_CODE(KEYCODE_T) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("1-6") PORT_CODE(KEYCODE_Y) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("1-7") PORT_CODE(KEYCODE_U) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("1-8") PORT_CODE(KEYCODE_I) +*/ + PORT_START("IN2") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("2-1") PORT_CODE(KEYCODE_A) + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("2-2") PORT_CODE(KEYCODE_S) + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("2-3") PORT_CODE(KEYCODE_D) + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("2-4") PORT_CODE(KEYCODE_F) + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("2-5") PORT_CODE(KEYCODE_G) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("2-6") PORT_CODE(KEYCODE_H) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("2-7") PORT_CODE(KEYCODE_J) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("2-8") PORT_CODE(KEYCODE_K) + + PORT_START("IN3") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("3-1") PORT_CODE(KEYCODE_Z) + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("3-2") PORT_CODE(KEYCODE_X) + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("3-3") PORT_CODE(KEYCODE_C) + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("3-4") PORT_CODE(KEYCODE_V) + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("3-5") PORT_CODE(KEYCODE_B) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("3-6") PORT_CODE(KEYCODE_N) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("3-7") PORT_CODE(KEYCODE_M) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("3-8") PORT_CODE(KEYCODE_L) + + PORT_START("SW1") + PORT_DIPNAME( 0x01, 0x01, "sw1" ) + PORT_DIPSETTING( 0x01, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x02, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x04, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x08, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x10, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x20, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x40, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x80, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + + PORT_START("SW2") + PORT_DIPNAME( 0x01, 0x01, "sw2" ) + PORT_DIPSETTING( 0x01, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x02, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x04, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x08, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x10, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x20, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x40, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x80, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) +INPUT_PORTS_END + + +/************************* +* Graphics Layouts * +*************************/ + +static const gfx_layout charlayout = +{ + 8, 8, + 0x400, /* tiles */ + 2, /* 2 bpp */ + { RGN_FRAC(0,2), RGN_FRAC(1,2) }, + { 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 /* every char takes 8 consecutive bytes */ +}; + + +/****************************** +* Graphics Decode Information * +******************************/ + +static GFXDECODE_START( jokrwild ) + GFXDECODE_ENTRY( "gfx1", 0, charlayout, 0, 16 ) +GFXDECODE_END + + +/*********************** +* PIA Interfaces * +***********************/ + +static WRITE8_DEVICE_HANDLER( testa_w ) +{ +// printf("%02x A\n",data); +} + +static WRITE8_DEVICE_HANDLER( testb_w ) +{ +// printf("%02x B\n",data); +} + +static const pia6821_interface pia0_intf = +{ + DEVCB_INPUT_PORT("IN0"), /* port A in */ + DEVCB_INPUT_PORT("IN1"), /* port B in */ + DEVCB_NULL, /* line CA1 in */ + DEVCB_NULL, /* line CB1 in */ + DEVCB_NULL, /* line CA2 in */ + DEVCB_NULL, /* line CB2 in */ + DEVCB_HANDLER(testa_w), /* port A out */ + DEVCB_HANDLER(testb_w), /* port B out */ + DEVCB_NULL, /* line CA2 out */ + DEVCB_NULL, /* port CB2 out */ + DEVCB_NULL, /* IRQA */ + DEVCB_NULL /* IRQB */ +}; + +static const pia6821_interface pia1_intf = +{ + DEVCB_INPUT_PORT("IN2"), /* port A in */ + DEVCB_INPUT_PORT("IN3"), /* port B in */ + DEVCB_NULL, /* line CA1 in */ + DEVCB_NULL, /* line CB1 in */ + DEVCB_NULL, /* line CA2 in */ + DEVCB_NULL, /* line CB2 in */ + DEVCB_NULL, /* port A out */ + DEVCB_NULL, /* port B out */ + DEVCB_NULL, /* line CA2 out */ + DEVCB_NULL, /* port CB2 out */ + DEVCB_NULL, /* IRQA */ + DEVCB_NULL /* IRQB */ +}; + + +/************************ +* CRTC Interface * +************************/ + +static const mc6845_interface mc6845_intf = +{ + "screen", /* screen we are acting on */ + 8, /* number of pixels per video memory address */ + NULL, /* before pixel update callback */ + NULL, /* row update callback */ + NULL, /* after pixel update callback */ + DEVCB_NULL, /* callback for display state changes */ + DEVCB_NULL, /* callback for cursor state changes */ + DEVCB_NULL, /* HSYNC callback */ + DEVCB_NULL, /* VSYNC callback */ + NULL /* update address callback */ +}; + + +/************************* +* Machine Drivers * +*************************/ + +static MACHINE_CONFIG_START( jokrwild, jokrwild_state ) + + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu", M6809, MASTER_CLOCK/2) /* guess */ + MCFG_CPU_PROGRAM_MAP(jokrwild_map) + MCFG_CPU_VBLANK_INT("screen", nmi_line_pulse) + +// MCFG_NVRAM_ADD_0FILL("nvram") + + MCFG_PIA6821_ADD("pia0", pia0_intf) + MCFG_PIA6821_ADD("pia1", pia1_intf) + + /* video hardware */ + MCFG_SCREEN_ADD("screen", RASTER) + MCFG_SCREEN_REFRESH_RATE(60) + MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0)) + MCFG_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16) + MCFG_SCREEN_SIZE((32+1)*8, (32+1)*8) /* From MC6845, registers 00 & 04. (value-1) */ + MCFG_SCREEN_VISIBLE_AREA(0*8, 24*8-1, 0*8, 26*8-1) /* From MC6845, registers 01 & 06 */ + MCFG_SCREEN_UPDATE(jokrwild) + + MCFG_GFXDECODE(jokrwild) + MCFG_PALETTE_INIT(jokrwild) + MCFG_PALETTE_LENGTH(512) + MCFG_VIDEO_START(jokrwild) + + MCFG_MC6845_ADD("crtc", MC6845, MASTER_CLOCK/16, mc6845_intf) /* guess */ + +MACHINE_CONFIG_END + + +/************************* +* Rom Load * +*************************/ +/* + One day I will write about HOW I got this dump... :) + + "Only two things are infinite: The universe and human stupidity... + and I'm not sure about the universe." (Albert Einstein) + +*/ +ROM_START( jokrwild ) + ROM_REGION( 0x10000, "maincpu", 0 ) + ROM_LOAD( "jwild.7b", 0x8000, 0x4000, CRC(744cd029) SHA1(766faea330836344ffc6a1b4e1a64a679b9bf579) ) + ROM_LOAD( "jwild.7a", 0xc000, 0x4000, CRC(ca8e4f58) SHA1(a4f682980fe562dcd8743890ce94619719cd1153) ) + + ROM_REGION( 0x4000, "gfx1", 0 ) + ROM_LOAD( "jwild.2h", 0x0000, 0x0800, CRC(aed38e00) SHA1(9530078f6c22d67594606476c3698a75e052d1d6) ) + ROM_LOAD( "jwild.2g", 0x1000, 0x0800, CRC(d635f025) SHA1(f70d5a837797e2250a7e581b96e60a704da25511) ) + ROM_LOAD( "jwild.2f", 0x0800, 0x0800, CRC(9c1e057c) SHA1(23fd630aa20a4ffa5179d4a4fa32c6ee4b3f9c1b) ) + ROM_LOAD( "jwild.2e", 0x1800, 0x0800, CRC(a66ae0a1) SHA1(8e6bfcb169148fdbcc36f4f35747c4805762ddd7) ) + ROM_LOAD( "jwild.2d", 0x2000, 0x0800, CRC(76a0bcb4) SHA1(34c24ad63b1182166209074259e8f0aabe1ad331) ) + ROM_LOAD( "jwild.2c", 0x3000, 0x0800, CRC(8d5e0b8f) SHA1(da6692d0c2074427f801b3f1861e3d03075963a2) ) + ROM_LOAD( "jwild.2b", 0x2800, 0x0800, CRC(a264b0be) SHA1(a935dd3df8bbae9b7788d6c2a8c378fad07d2b43) ) + ROM_LOAD( "jwild.2a", 0x3800, 0x0800, CRC(8084d0c2) SHA1(370f30f0138e2f7743a97df92379c7b879d90aed) ) + + ROM_REGION( 0x0100, "proms", 0 ) + ROM_LOAD( "prom.x", 0x0000, 0x0100, NO_DUMP ) +ROM_END + + +/************************** +* Driver Initialization * +**************************/ + +static DRIVER_INIT( jokrwild ) +/***************************************************************************** + + Encryption was made by pages of 256 bytes. + + For each page, the value is XORed with a fixed value (0xCC), + then XORed again with the offset of the original value inside its own page. + + Example: + + For encrypted value at offset 0x123A (0x89)... + + 0x89 XOR 0xCC XOR 0x3A = 0x7F + + +*****************************************************************************/ +{ + int i, offs; + UINT8 *srcp = machine.region( "maincpu" )->base(); + + for (i = 0x8000; i < 0x10000; i++) + { + offs = i & 0xff; + srcp[i] = srcp[i] ^ 0xcc ^ offs; + } +} + + +/************************* +* Game Drivers * +*************************/ + +/* YEAR NAME PARENT MACHINE INPUT INIT ROT COMPANY FULLNAME FLAGS */ +GAME( 1988, jokrwild, 0, jokrwild, jokrwild, jokrwild, ROT0, "Sigma", "Joker's Wild (encrypted)", GAME_NO_SOUND | GAME_NOT_WORKING ) |