// license: BSD-3-Clause // copyright-holders: Mathis Rosenhauer, Dirk Best // thanks-to: Jonathan Gevaryahu /*************************************************************************** Beezer (c) 1982 Tong Electronic Notes: - To enter test mode, hold down 1P Start and 2P Start, then reset (only works for version 9.0) - One of the ROMs contains a message that this game was created by "Pacific Polytechnical Corporation, Santa Cruz" TODO: - Improve sound (filters? A reference recording would be nice) - Schematics in the sound area seem incomplete, there are several unknown connections - Watchdog timing (controlled by a 555) - Figure out differences between the two sets (test mode isn't working in beezer1, instruction screen is different) - Verify accuracy of colors ***************************************************************************/ #include "emu.h" #include "cpu/m6809/m6809.h" #include "machine/input_merger.h" #include "machine/timer.h" #include "machine/watchdog.h" #include "machine/bankdev.h" #include "machine/6522via.h" #include "machine/6840ptm.h" #include "sound/mm5837.h" #include "sound/dac76.h" #include "video/resnet.h" #include "emupal.h" #include "screen.h" #include "speaker.h" //************************************************************************** // TYPE DEFINITIONS //************************************************************************** class beezer_state : public driver_device { public: beezer_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu"), m_sysbank(*this, "sysbank"), m_banked_roms(*this, "banked"), m_rombank{ {*this, "rombank_f1"}, {*this, "rombank_f3"}, {*this, "rombank_e1"}, {*this, "rombank_e3"}, {*this, "rombank_e5"}, {*this, "rombank_f5"}, {*this, "rombank_f7"} }, m_via_system(*this, "via_u6"), m_screen(*this, "screen"), m_palette(*this, "palette"), m_videoram(*this, "videoram"), m_audiocpu(*this, "audiocpu"), m_via_audio(*this, "via_u18"), m_ptm(*this, "ptm"), m_dac(*this, "dac"), m_dac_timer(nullptr), m_scanline_timer(nullptr), m_count(0), m_noise(0), m_pbus(0xff), m_x(0), m_y(0), m_z(0) { m_ch_sign[0] = m_ch_sign[1] = m_ch_sign[2] = m_ch_sign[3] = 0; m_dac_data[0] = m_dac_data[1] = m_dac_data[2] = m_dac_data[3] = 0; } void scanline_cb(); void dac_update_cb(); uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); void palette_init(palette_device &palette); void palette_w(offs_t offset, uint8_t data); uint8_t line_r(); DECLARE_WRITE_LINE_MEMBER(noise_w); void dac_w(offs_t offset, uint8_t data); uint8_t via_audio_pa_r(); void via_audio_pa_w(uint8_t data); void via_audio_pb_w(uint8_t data); DECLARE_WRITE_LINE_MEMBER(ptm_o1_w); DECLARE_WRITE_LINE_MEMBER(ptm_o2_w); DECLARE_WRITE_LINE_MEMBER(ptm_o3_w); DECLARE_WRITE_LINE_MEMBER(dmod_clr_w); DECLARE_WRITE_LINE_MEMBER(dmod_data_w); uint8_t via_system_pa_r(); uint8_t via_system_pb_r(); void via_system_pa_w(uint8_t data); void via_system_pb_w(uint8_t data); void bankswitch_w(uint8_t data); void beezer(machine_config &config); void banked_map(address_map &map); void main_map(address_map &map); void sound_map(address_map &map); protected: virtual void machine_start() override; virtual void machine_reset() override; enum { TIMER_DAC, TIMER_SCANLINE }; virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override; private: required_device m_maincpu; required_device m_sysbank; required_memory_region m_banked_roms; required_memory_bank m_rombank[7]; required_device m_via_system; required_device m_screen; required_device m_palette; required_shared_ptr m_videoram; required_device m_audiocpu; required_device m_via_audio; required_device m_ptm; required_device m_dac; double m_weights_r[3]; double m_weights_g[3]; double m_weights_b[2]; emu_timer *m_dac_timer; emu_timer *m_scanline_timer; int m_ch_sign[4]; uint8_t m_dac_data[4]; int m_count; int m_noise; uint8_t m_pbus; int m_x, m_y, m_z; }; //************************************************************************** // ADDRESS MAPS //************************************************************************** void beezer_state::main_map(address_map &map) { map(0x0000, 0xbfff).ram().share("videoram"); map(0xc000, 0xcfff).m(m_sysbank, FUNC(address_map_bank_device::amap8)); map(0xd000, 0xdfff).rom().region("maincpu", 0x0000).w(FUNC(beezer_state::bankswitch_w)); // g1 map(0xe000, 0xefff).rom().region("maincpu", 0x1000); // g3 map(0xf000, 0xffff).rom().region("maincpu", 0x2000); // g5 } void beezer_state::banked_map(address_map &map) { map(0x0600, 0x0600).mirror(0x1ff).w("watchdog", FUNC(watchdog_timer_device::reset_w)); map(0x0800, 0x080f).mirror(0x1f0).w(FUNC(beezer_state::palette_w)); map(0x0a00, 0x0a00).mirror(0x1ff).r(FUNC(beezer_state::line_r)); map(0x0e00, 0x0e0f).mirror(0x1f0).m("via_u6", FUNC(via6522_device::map)); map(0x1000, 0x1fff).bankr("rombank_f1"); map(0x2000, 0x2fff).bankr("rombank_f3"); map(0x3000, 0x3fff).bankr("rombank_e1"); map(0x4000, 0x4fff).bankr("rombank_e3"); map(0x5000, 0x5fff).bankr("rombank_e5"); map(0x6000, 0x6fff).bankr("rombank_f5"); map(0x7000, 0x7fff).bankr("rombank_f7"); } void beezer_state::sound_map(address_map &map) { map(0x0000, 0x07ff).ram(); // 0d map(0x0800, 0x0fff).ram(); // 2d, optional (can be rom) map(0x1000, 0x1007).mirror(0x07f8).rw(m_ptm, FUNC(ptm6840_device::read), FUNC(ptm6840_device::write)); map(0x1800, 0x180f).mirror(0x07f0).m(m_via_audio, FUNC(via6522_device::map)); map(0x8000, 0x8003).mirror(0x1ffc).w(FUNC(beezer_state::dac_w)); // map(0xa000, 0xbfff).rom(); // 2d (can be ram, unpopulated) // map(0xc000, 0xdfff).rom(); // 4d (unpopulated) map(0xe000, 0xffff).rom().region("audiocpu", 0); // 6d } //************************************************************************** // INPUTS //************************************************************************** static INPUT_PORTS_START( beezer ) PORT_START("IN0") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_TILT ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_START2 ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START1 ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_START("IN1") PORT_BIT( 0x0f, 0x00, IPT_TRACKBALL_X ) PORT_SENSITIVITY(20) PORT_KEYDELTA(10) PORT_REVERSE PORT_START("IN2") PORT_BIT( 0x0f, 0x00, IPT_TRACKBALL_Y ) PORT_SENSITIVITY(20) PORT_KEYDELTA(10) PORT_REVERSE // DSWA isn't populated on the board and is pulled to 0xff with a resistor pack PORT_START("DSWA") PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_START("DSWB") PORT_DIPNAME( 0x03, 0x03, DEF_STR( Coinage ) ) PORT_DIPLOCATION("SWB:1,2") PORT_DIPSETTING( 0x02, DEF_STR( 2C_1C ) ) PORT_DIPSETTING( 0x03, DEF_STR( 1C_1C ) ) PORT_DIPSETTING( 0x00, DEF_STR( Free_Play ) ) PORT_DIPNAME( 0x04, 0x00, DEF_STR( Lives ) ) PORT_DIPLOCATION("SWB:3") PORT_DIPSETTING( 0x04, "3" ) PORT_DIPSETTING( 0x00, "4" ) PORT_DIPNAME( 0x08, 0x08, DEF_STR( Demo_Sounds ) ) PORT_DIPLOCATION("SWB:4") PORT_DIPSETTING( 0x00, DEF_STR( Off ) ) PORT_DIPSETTING( 0x08, DEF_STR( On ) ) PORT_DIPNAME( 0x30, 0x10, DEF_STR( Bonus_Life ) ) PORT_DIPLOCATION("SWB:5,6") PORT_DIPSETTING( 0x20, "30000" ) PORT_DIPSETTING( 0x10, "60000" ) PORT_DIPSETTING( 0x00, "90000" ) PORT_DIPSETTING( 0x30, DEF_STR( No ) ) PORT_DIPNAME( 0xc0, 0xc0, DEF_STR( Difficulty ) ) PORT_DIPLOCATION("SWB:7,8") PORT_DIPSETTING( 0xc0, DEF_STR( Easy ) ) PORT_DIPSETTING( 0x80, DEF_STR( Medium ) ) PORT_DIPSETTING( 0x40, DEF_STR( Hard ) ) PORT_DIPSETTING( 0x00, DEF_STR( Hardest ) ) INPUT_PORTS_END //************************************************************************** // VIDEO EMULATION //************************************************************************** void beezer_state::scanline_cb() { const int scanline = m_screen->vpos(); // TDISP, each 32 lines m_via_system->write_ca2((scanline & 32) ? 1 : 0); // actually unused by the game (points to a tight loop) if (scanline == 240) m_maincpu->set_input_line(M6809_FIRQ_LINE, ASSERT_LINE); else m_maincpu->set_input_line(M6809_FIRQ_LINE, CLEAR_LINE); m_scanline_timer->adjust(m_screen->time_until_pos(scanline + 1)); } uint32_t beezer_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { for (int y = cliprect.min_y; y <= cliprect.max_y; y++) { for (int x = cliprect.min_x; x <= cliprect.max_x; x += 2) { bitmap.pix16(y, x + 1) = m_videoram[0x80 * x + y] & 0x0f; bitmap.pix16(y, x + 0) = m_videoram[0x80 * x + y] >> 4; } } return 0; } void beezer_state::palette_init(palette_device &device) { const int resistances_rg[3] = { 1200, 560, 330 }; const int resistances_b[2] = { 560, 330 }; // calculate coefficients for later use compute_resistor_weights(0, 255, -1.0, 3, resistances_rg, m_weights_r, 680, 150, 3, resistances_rg, m_weights_g, 680, 150, 2, resistances_b, m_weights_b, 680, 150); } void beezer_state::palette_w(offs_t offset, uint8_t data) { int r = combine_weights(m_weights_r, BIT(data, 0), BIT(data, 1), BIT(data, 2)); int g = combine_weights(m_weights_g, BIT(data, 3), BIT(data, 4), BIT(data, 5)); int b = combine_weights(m_weights_b, BIT(data, 6), BIT(data, 7)); m_palette->set_pen_color(offset, rgb_t(r, g, b)); } uint8_t beezer_state::line_r() { // d2 to d7 connected to hex buffer u34 return m_screen->vpos() & 0xfc; } //************************************************************************** // AUDIO //************************************************************************** void beezer_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) { switch (id) { case TIMER_DAC: dac_update_cb(); break; case TIMER_SCANLINE: scanline_cb(); break; default: throw emu_fatalerror("Unknown id in beezer_state::device_timer"); } } void beezer_state::dac_update_cb() { // channel multiplexer at u52 int ch = m_count++ & 3; m_dac->update(); m_dac->b1_w(BIT(m_dac_data[ch], 6)); m_dac->b2_w(BIT(m_dac_data[ch], 5)); m_dac->b3_w(BIT(m_dac_data[ch], 4)); m_dac->b4_w(BIT(m_dac_data[ch], 3)); m_dac->b5_w(BIT(m_dac_data[ch], 2)); m_dac->b6_w(BIT(m_dac_data[ch], 1)); m_dac->b7_w(BIT(m_dac_data[ch], 0)); m_dac->sb_w(m_ch_sign[ch] ^ BIT(m_dac_data[ch], 7)); } WRITE_LINE_MEMBER( beezer_state::noise_w ) { m_noise = state; m_via_audio->write_pb6(m_noise); } void beezer_state::dac_w(offs_t offset, uint8_t data) { m_dac_data[offset] = data; } uint8_t beezer_state::via_audio_pa_r() { return m_pbus; } void beezer_state::via_audio_pa_w(uint8_t data) { m_pbus = data; } void beezer_state::via_audio_pb_w(uint8_t data) { // bit 0 - dmod disable // bit 1 - fm or am // bit 2 - am // bit 3 - fmsel0 // bit 4 - fmsel1 // -- above bits not handled and only partially visible on the schematic // bit 7 - noise gate on rising edge to ptm c1 if (m_ch_sign[0] == 0 && (BIT(data, 7) == 1)) m_ptm->set_c1(m_noise); m_ch_sign[0] = BIT(data, 7); } WRITE_LINE_MEMBER( beezer_state::ptm_o1_w ) { m_ch_sign[1] = state; } WRITE_LINE_MEMBER( beezer_state::ptm_o2_w ) { // on rising edge, enable noise input to ptm c3 if (m_ch_sign[2] == 0 && state == 1) m_ptm->set_c3(m_noise); m_ch_sign[2] = state; } WRITE_LINE_MEMBER( beezer_state::ptm_o3_w ) { m_ch_sign[3] = state; } WRITE_LINE_MEMBER( beezer_state::dmod_clr_w ) { // schematics don't show where this is connected } WRITE_LINE_MEMBER( beezer_state::dmod_data_w ) { // schematics don't show where this is connected } //************************************************************************** // MACHINE EMULATION //************************************************************************** uint8_t beezer_state::via_system_pa_r() { uint8_t data = 0; data |= 1 << 4; // N/C data |= m_z << 5; data |= m_y << 6; data |= m_x << 7; return data; } void beezer_state::via_system_pa_w(uint8_t data) { // bit 3, audio cpu reset line m_audiocpu->set_input_line(INPUT_LINE_RESET, BIT(data, 3) ? CLEAR_LINE : ASSERT_LINE); // bit 2, enable for ls139 if (BIT(data, 2) == 0) { // bit 0-1, input selection switch (data & 0x03) { case 0: m_pbus = ioport("IN0")->read(); break; case 1: m_pbus = ioport("IN1")->read() | (ioport("IN2")->read() << 4); break; case 2: m_pbus = ioport("DSWB")->read(); break; case 3: m_pbus = ioport("DSWA")->read(); break; } } } uint8_t beezer_state::via_system_pb_r() { return m_pbus; } void beezer_state::via_system_pb_w(uint8_t data) { m_pbus = data; } void beezer_state::bankswitch_w(uint8_t data) { m_x = BIT(data, 3); m_y = BIT(data, 4); m_z = BIT(data, 5); m_sysbank->set_bank(data & 0x07); for (int i = 0; i < 7; i++) m_rombank[i]->set_entry(m_x); } void beezer_state::machine_start() { // configure rom banks for (int i = 0; i < 7; i++) m_rombank[i]->configure_entries(0, 2, m_banked_roms->base() + (i * 0x2000), 0x1000); // allocate timers m_dac_timer = timer_alloc(TIMER_DAC); m_scanline_timer = timer_alloc(TIMER_SCANLINE); // register for state saving save_item(NAME(m_ch_sign)); save_item(NAME(m_dac_data)); save_item(NAME(m_count)); save_item(NAME(m_noise)); save_item(NAME(m_pbus)); save_item(NAME(m_x)); save_item(NAME(m_y)); save_item(NAME(m_z)); } void beezer_state::machine_reset() { m_pbus = 0xff; // initialize memory banks bankswitch_w(0); // start timer m_dac_timer->adjust(attotime::zero, 0, attotime::from_hz((XTAL(4'000'000) / 4) / 16)); m_scanline_timer->adjust(m_screen->scan_period()); } //************************************************************************** // MACHINE DEFINTIONS //************************************************************************** void beezer_state::beezer(machine_config &config) { // basic machine hardware MC6809(config, m_maincpu, XTAL(12'000'000) / 3); m_maincpu->set_addrmap(AS_PROGRAM, &beezer_state::main_map); ADDRESS_MAP_BANK(config, m_sysbank, 0); m_sysbank->set_addrmap(AS_PROGRAM, &beezer_state::banked_map); m_sysbank->set_endianness(ENDIANNESS_BIG); m_sysbank->set_data_width(8); m_sysbank->set_addr_width(15); m_sysbank->set_stride(0x1000); VIA6522(config, m_via_system, XTAL(12'000'000) / 12); m_via_system->readpa_handler().set(FUNC(beezer_state::via_system_pa_r)); m_via_system->readpb_handler().set(FUNC(beezer_state::via_system_pb_r)); m_via_system->writepa_handler().set(FUNC(beezer_state::via_system_pa_w)); m_via_system->writepb_handler().set(FUNC(beezer_state::via_system_pb_w)); m_via_system->cb1_handler().set(m_via_audio, FUNC(via6522_device::write_ca2)); m_via_system->cb2_handler().set(m_via_audio, FUNC(via6522_device::write_ca1)); m_via_system->irq_handler().set_inputline(m_maincpu, M6809_IRQ_LINE); WATCHDOG_TIMER(config, "watchdog"); // video hardware SCREEN(config, m_screen, SCREEN_TYPE_RASTER); m_screen->set_refresh_hz(60); m_screen->set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */ m_screen->set_size(384, 256); m_screen->set_visarea(16, 304-1, 0, 240-1); // 288 x 240, correct? m_screen->set_screen_update(FUNC(beezer_state::screen_update)); m_screen->set_palette(m_palette); PALETTE(config, m_palette, FUNC(beezer_state::palette_init), 16); // sound hardware MC6809(config, m_audiocpu, XTAL(4'000'000)); m_audiocpu->set_addrmap(AS_PROGRAM, &beezer_state::sound_map); input_merger_device &audio_irqs(INPUT_MERGER_ANY_HIGH(config, "audio_irqs")); audio_irqs.output_handler().set_inputline(m_audiocpu, M6809_IRQ_LINE); VIA6522(config, m_via_audio, XTAL(4'000'000) / 4); m_via_audio->readpa_handler().set(FUNC(beezer_state::via_audio_pa_r)); m_via_audio->writepa_handler().set(FUNC(beezer_state::via_audio_pa_w)); m_via_audio->writepb_handler().set(FUNC(beezer_state::via_audio_pb_w)); m_via_audio->ca2_handler().set(m_via_system, FUNC(via6522_device::write_cb1)); m_via_audio->cb1_handler().set(FUNC(beezer_state::dmod_clr_w)); m_via_audio->cb2_handler().set(FUNC(beezer_state::dmod_data_w)); m_via_audio->irq_handler().set("audio_irqs", FUNC(input_merger_device::in_w<0>)); PTM6840(config, m_ptm, XTAL(4'000'000) / 4); m_ptm->o1_callback().set(FUNC(beezer_state::ptm_o1_w)); m_ptm->o2_callback().set(FUNC(beezer_state::ptm_o2_w)); m_ptm->o3_callback().set(FUNC(beezer_state::ptm_o3_w)); m_ptm->irq_callback().set("audio_irqs", FUNC(input_merger_device::in_w<1>)); // schematics show an input labeled VCO to channel 2, but the source is unknown mm5837_device &noise(MM5837(config, "noise")); noise.set_vdd_voltage(12); noise.output_callback().set(FUNC(beezer_state::noise_w)); SPEAKER(config, "speaker").front_center(); DAC76(config, m_dac, 0); m_dac->add_route(ALL_OUTPUTS, "speaker", 1.0); } //************************************************************************** // ROM DEFINITIONS //************************************************************************** ROM_START( beezer ) ROM_REGION(0xc000, "maincpu", 0) ROM_LOAD("g1", 0x0000, 0x1000, CRC(3467a0ec) SHA1(0b094a9bf772b101acd26cf09009c67dd4785ed2)) ROM_LOAD("g3", 0x1000, 0x1000, CRC(9950cdf2) SHA1(b2b59cc1080357de6ba297392881d626157df809)) ROM_LOAD("g5", 0x2000, 0x1000, CRC(a4b09879) SHA1(69739dd1d3c88ee6ab310ca3c71b3b50d8ec618f)) // rom type can be either 2732 or 2764 in all locations ROM_REGION(0xe000, "banked", 0) ROM_LOAD("f1", 0x0000, 0x2000, CRC(ce1b0b8b) SHA1(8ed1d793928bb7afa041a4f61e0c2f78b4442f2f)) ROM_LOAD("f3", 0x2000, 0x2000, CRC(6a11072a) SHA1(9700beaec669849da4d0e39d6dbf0b872d7f1b7f)) ROM_LOAD("e1", 0x4000, 0x1000, CRC(21e4ca9b) SHA1(4024678a4006614051675858ba65db655931a539)) ROM_RELOAD(0x5000, 0x1000) ROM_LOAD("e3", 0x6000, 0x1000, CRC(a4f735d7) SHA1(110061d1c63a331384729951f93a31e62744d0d7)) ROM_RELOAD(0x7000, 0x1000) ROM_LOAD("e5", 0x8000, 0x1000, CRC(0485575b) SHA1(c3be070541459fad4da4a71604883b2f3043374a)) ROM_RELOAD(0x9000, 0x1000) ROM_LOAD("f5", 0xa000, 0x1000, CRC(4b11f572) SHA1(4f283c98a7f1bcf534921b4a54cf564335c53e37)) ROM_RELOAD(0xb000, 0x1000) ROM_LOAD("f7", 0xc000, 0x1000, CRC(bef67473) SHA1(5759ceeca0bb677cee97b74f1a1087d53c25463a)) ROM_RELOAD(0xd000, 0x1000) ROM_REGION(0x2000, "audiocpu", 0) ROM_LOAD("d7", 0x1000, 0x1000, CRC(23b0782e) SHA1(7751327b84235a2e2700e4bdd21adec205c54f0e)) ROM_REGION(0x200, "proms", 0) ROM_LOAD("d1.cpu", 0x000, 0x100, CRC(8db17a40) SHA1(0e04a4f5f99b302dbbbfda438808d549f8680fe2)) ROM_LOAD("e1.cpu", 0x100, 0x100, CRC(3c775c5e) SHA1(ac86f45938c0c9d5fec1245bf86718442baf445b)) ROM_END ROM_START( beezer1 ) ROM_REGION(0x3000, "maincpu", 0) ROM_LOAD("g1.32", 0x0000, 0x1000, CRC(3134cb93) SHA1(7d4a484378b66ccf2fded31885d6dfb2abae9317)) ROM_LOAD("g3.32", 0x1000, 0x1000, CRC(a3cb2c2d) SHA1(1e17eb0eaf02f86865845a065a5f714fc51aa7d6)) ROM_LOAD("g5.32", 0x2000, 0x1000, CRC(5e559bf9) SHA1(cd3713f3ed1215ea5c5640474ba6f005242cd093)) // rom type can be either 2732 or 2764 in all locations ROM_REGION(0xe000, "banked", 0) ROM_LOAD("f1.64", 0x0000, 0x2000, CRC(b8a78cca) SHA1(4218ef8c4c8e10d7cc47d6de4c4d189ef3c0f0a1)) ROM_LOAD("f3.32", 0x2000, 0x1000, CRC(bfa023f5) SHA1(56fb15e2db61197e1aec5a5825beff7c788a4ba3)) ROM_RELOAD(0x3000, 0x1000) ROM_LOAD("e1", 0x4000, 0x1000, CRC(21e4ca9b) SHA1(4024678a4006614051675858ba65db655931a539)) ROM_RELOAD(0x5000, 0x1000) ROM_LOAD("e3", 0x6000, 0x1000, CRC(a4f735d7) SHA1(110061d1c63a331384729951f93a31e62744d0d7)) ROM_RELOAD(0x7000, 0x1000) ROM_LOAD("e5", 0x8000, 0x1000, CRC(0485575b) SHA1(c3be070541459fad4da4a71604883b2f3043374a)) ROM_RELOAD(0x9000, 0x1000) ROM_LOAD("f5", 0xa000, 0x1000, CRC(4b11f572) SHA1(4f283c98a7f1bcf534921b4a54cf564335c53e37)) ROM_RELOAD(0xb000, 0x1000) ROM_LOAD("f7", 0xc000, 0x1000, CRC(bef67473) SHA1(5759ceeca0bb677cee97b74f1a1087d53c25463a)) ROM_RELOAD(0xd000, 0x1000) ROM_REGION(0x2000, "audiocpu", 0) ROM_LOAD("d7.32", 0x1000, 0x1000, CRC(b11028b5) SHA1(db8958f0bb12e333ce056da3338f1a824dda36e0)) ROM_REGION(0x200, "proms", 0) ROM_LOAD("d1.cpu", 0x000, 0x100, CRC(8db17a40) SHA1(0e04a4f5f99b302dbbbfda438808d549f8680fe2)) ROM_LOAD("e1.cpu", 0x100, 0x100, CRC(3c775c5e) SHA1(ac86f45938c0c9d5fec1245bf86718442baf445b)) ROM_END //************************************************************************** // SYSTEM DRIVERS //************************************************************************** // YEAR NAME PARENT MACHINE INPUT CLASS INIT ROTATION COMPANY FULLNAME FLAGS GAME( 1982, beezer, 0, beezer, beezer, beezer_state, empty_init, ROT90, "Tong Electronic", "Beezer (version 9.0)", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE ) // Has test mode, shows version GAME( 1982, beezer1, beezer, beezer, beezer, beezer_state, empty_init, ROT90, "Tong Electronic", "Beezer (unknown earlier version)", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE ) // No test mode, possibly earlier?