diff options
Diffstat (limited to 'src/mame/drivers/jokrwild.cpp')
-rw-r--r-- | src/mame/drivers/jokrwild.cpp | 518 |
1 files changed, 0 insertions, 518 deletions
diff --git a/src/mame/drivers/jokrwild.cpp b/src/mame/drivers/jokrwild.cpp deleted file mode 100644 index 69886589d94..00000000000 --- a/src/mame/drivers/jokrwild.cpp +++ /dev/null @@ -1,518 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Roberto Fresca -/****************************************************************************** - - JOKER'S WILD - SIGMA (1988) - Preliminary driver by Roberto Fresca. - - -******************************************************************************* - - 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 *** - - RND old 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 - - Currently the game spit an error about bad RAM, and after approx 90 seconds - the playfield is drawn and then hang. - -******************************************************************************* - - -------------------- - *** 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. - -*******************************************************************************/ - -#include "emu.h" -#include "cpu/m6809/m6809.h" -#include "video/mc6845.h" -#include "machine/6821pia.h" -#include "machine/nvram.h" -#include "emupal.h" -#include "screen.h" -#include "tilemap.h" - -#define MASTER_CLOCK XTAL(8'000'000) /* guess */ - - -class jokrwild_state : public driver_device -{ -public: - jokrwild_state(const machine_config &mconfig, device_type type, const char *tag) : - driver_device(mconfig, type, tag), - m_videoram(*this, "videoram"), - m_colorram(*this, "colorram"), - m_maincpu(*this, "maincpu"), - m_gfxdecode(*this, "gfxdecode") - { } - - void jokrwild(machine_config &config); - - void init_jokrwild(); - -protected: - virtual void video_start() override; - -private: - required_shared_ptr<uint8_t> m_videoram; - required_shared_ptr<uint8_t> m_colorram; - tilemap_t *m_bg_tilemap; - required_device<cpu_device> m_maincpu; - required_device<gfxdecode_device> m_gfxdecode; - - DECLARE_WRITE8_MEMBER(jokrwild_videoram_w); - DECLARE_WRITE8_MEMBER(jokrwild_colorram_w); - DECLARE_READ8_MEMBER(rng_r); - DECLARE_WRITE8_MEMBER(testa_w); - DECLARE_WRITE8_MEMBER(testb_w); - TILE_GET_INFO_MEMBER(get_bg_tile_info); - void jokrwild_palette(palette_device &palette) const; - uint32_t screen_update_jokrwild(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); - void jokrwild_map(address_map &map); -}; - - -/************************* -* Video Hardware * -*************************/ - -WRITE8_MEMBER(jokrwild_state::jokrwild_videoram_w) -{ - m_videoram[offset] = data; - m_bg_tilemap->mark_tile_dirty(offset); -} - -WRITE8_MEMBER(jokrwild_state::jokrwild_colorram_w) -{ - m_colorram[offset] = data; - m_bg_tilemap->mark_tile_dirty(offset); -} - -TILE_GET_INFO_MEMBER(jokrwild_state::get_bg_tile_info) -{ -/* - bits - - 7654 3210 - xx-- ---- bank select. - ---- xxxx color code. -*/ - int attr = m_colorram[tile_index]; - int code = m_videoram[tile_index] | ((attr & 0xc0) << 2); - int color = (attr & 0x0f); - - SET_TILE_INFO_MEMBER(0, code , color , 0); -} - -void jokrwild_state::video_start() -{ - m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(jokrwild_state::get_bg_tile_info)), TILEMAP_SCAN_ROWS, 8, 8, 24, 26); -} - -uint32_t jokrwild_state::screen_update_jokrwild(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) -{ - m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0); - return 0; -} - -void jokrwild_state::jokrwild_palette(palette_device &palette) const -{ - //missing proms -} - - -/***************************** -* Read/Write Handlers * -*****************************/ - -READ8_MEMBER(jokrwild_state::rng_r) -{ - if(m_maincpu->pc() == 0xab32) - return (offset == 0) ? 0x9e : 0x27; - - if(m_maincpu->pc() == 0xab3a) - return (offset == 2) ? 0x49 : 0x92; - - return machine().rand() & 0xff; -} - - -/************************* -* Memory Map Information * -*************************/ - -void jokrwild_state::jokrwild_map(address_map &map) -{ - map(0x0000, 0x03ff).ram().w(FUNC(jokrwild_state::jokrwild_videoram_w)).share("videoram"); - map(0x0400, 0x07ff).ram(); //FIXME: backup RAM - map(0x2000, 0x23ff).ram().w(FUNC(jokrwild_state::jokrwild_colorram_w)).share("colorram"); - map(0x2400, 0x27ff).ram(); //stack RAM - map(0x4004, 0x4007).rw("pia0", FUNC(pia6821_device::read), FUNC(pia6821_device::write)); - map(0x4008, 0x400b).rw("pia1", FUNC(pia6821_device::read), FUNC(pia6821_device::write)); //optical sensor is here -// map(0x4010, 0x4010).nopr(); /* R ???? */ - map(0x6000, 0x6000).w("crtc", FUNC(mc6845_device::address_w)); - map(0x6001, 0x6001).rw("crtc", FUNC(mc6845_device::register_r), FUNC(mc6845_device::register_w)); - map(0x6100, 0x6100).portr("SW1"); - map(0x6200, 0x6203).r(FUNC(jokrwild_state::rng_r));//another PIA? - map(0x6300, 0x6300).portr("SW2"); - map(0x8000, 0xffff).rom(); -} - -/* 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( gfx_jokrwild ) - GFXDECODE_ENTRY( "gfx1", 0, charlayout, 0, 16 ) -GFXDECODE_END - - -/*********************** -* PIA Interfaces * -***********************/ - -WRITE8_MEMBER(jokrwild_state::testa_w) -{ -// printf("%02x A\n",data); -} - -WRITE8_MEMBER(jokrwild_state::testb_w) -{ -// printf("%02x B\n",data); -} - - -/************************* -* Machine Drivers * -*************************/ - -void jokrwild_state::jokrwild(machine_config &config) -{ - /* basic machine hardware */ - M6809(config, m_maincpu, MASTER_CLOCK/2); /* guess */ - m_maincpu->set_addrmap(AS_PROGRAM, &jokrwild_state::jokrwild_map); - -// NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); - - pia6821_device &pia0(PIA6821(config, "pia0", 0)); - pia0.readpa_handler().set_ioport("IN0"); - pia0.readpb_handler().set_ioport("IN1"); - pia0.writepa_handler().set(FUNC(jokrwild_state::testa_w)); - pia0.writepb_handler().set(FUNC(jokrwild_state::testb_w)); - - pia6821_device &pia1(PIA6821(config, "pia1", 0)); - pia1.readpa_handler().set_ioport("IN2"); - pia1.readpb_handler().set_ioport("IN3"); - - /* video hardware */ - screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); - screen.set_refresh_hz(60); - screen.set_vblank_time(ATTOSECONDS_IN_USEC(0)); - screen.set_size((32+1)*8, (32+1)*8); // From MC6845, registers 00 & 04. (value-1) - screen.set_visarea(0*8, 24*8-1, 0*8, 26*8-1); // From MC6845, registers 01 & 06. - screen.set_screen_update(FUNC(jokrwild_state::screen_update_jokrwild)); - - GFXDECODE(config, m_gfxdecode, "palette", gfx_jokrwild); - PALETTE(config, "palette", FUNC(jokrwild_state::jokrwild_palette), 512); - - mc6845_device &crtc(MC6845(config, "crtc", MASTER_CLOCK/16)); /* guess */ - crtc.set_screen("screen"); - crtc.set_show_border_area(false); - crtc.set_char_width(8); - crtc.out_vsync_callback().set_inputline(m_maincpu, INPUT_LINE_NMI); -} - - -/************************* -* 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 * -**************************/ - -void jokrwild_state::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 - - *****************************************************************************/ - uint8_t *const srcp = memregion( "maincpu" )->base(); - for (int i = 0x8000; i < 0x10000; i++) - { - int offs = i & 0xff; - srcp[i] = srcp[i] ^ 0xcc ^ offs; - } -} - - -/************************* -* Game Drivers * -*************************/ - -// YEAR NAME PARENT MACHINE INPUT STATE INIT ROT COMPANY FULLNAME FLAGS -GAME( 1988, jokrwild, 0, jokrwild, jokrwild, jokrwild_state, init_jokrwild, ROT0, "Sigma", "Joker's Wild (encrypted)", MACHINE_NO_SOUND | MACHINE_NOT_WORKING ) |