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/* 8080bw.c ********************************* */ #include "driver.h" #include "8080bw.h" #include "mw8080bw.h" #include "sound/samples.h" #include "sound/sn76477.h" #include "sound/discrete.h" #include "sound/speaker.h" static emu_timer *schaser_effect_555_timer; static attotime schaser_effect_555_time_remain; static int schaser_effect_555_is_low; static int schaser_explosion; static UINT8 port_1_last = 0; static UINT8 port_2_last = 0; static UINT8 port_3_last = 0; /*******************************************************/ /* */ /* Midway "Space Invaders Part II" */ /* */ /*******************************************************/ WRITE8_HANDLER( invadpt2_sh_port_1_w ) { UINT8 rising_bits = data & ~port_1_last; sn76477_enable_w(0, !(data & 0x01)); /* SAUCER SOUND */ if (rising_bits & 0x02) sample_start_n(0, 0, 0, 0); /* MISSLE SOUND */ if (rising_bits & 0x04) sample_start_n(0, 1, 1, 0); /* EXPLOSION */ if (rising_bits & 0x08) sample_start_n(0, 2, 2, 0); /* INVADER HIT */ if (rising_bits & 0x10) sample_start_n(0, 5, 8, 0); /* BONUS MISSILE BASE */ c8080bw_screen_red_w(data & 0x04); sound_global_enable(data & 0x20); port_1_last = data; } WRITE8_HANDLER( invadpt2_sh_port_2_w ) { /* FLEET (movement) DO = 20K + 20K D1 = 68K D2 = 82K D3 = 100K */ UINT8 rising_bits = data & ~port_2_last; if (rising_bits & 0x01) sample_start_n(0, 4, 3, 0); /* FLEET */ if (rising_bits & 0x02) sample_start_n(0, 4, 4, 0); /* FLEET */ if (rising_bits & 0x04) sample_start_n(0, 4, 5, 0); /* FLEET */ if (rising_bits & 0x08) sample_start_n(0, 4, 6, 0); /* FLEET */ if (rising_bits & 0x10) sample_start_n(0, 3, 7, 0); /* SAUCER HIT */ c8080bw_flip_screen_w(space, data & 0x20); port_2_last = data; } /*******************************************************/ /* */ /* Sanritsu "Space War" */ /* */ /*******************************************************/ WRITE8_HANDLER( spcewars_sh_port_w ) { UINT8 rising_bits = data & ~port_1_last; sn76477_enable_w(0, !(data & 0x01)); /* Saucer Sound */ if (rising_bits & 0x02) sample_start(0, 0, 0); /* Shot Sound */ if (rising_bits & 0x04) sample_start(1, 1, 0); /* Base Hit */ if (rising_bits & 0x08) sample_start(2, 2, 0); /* Invader Hit */ speaker_level_w(0, (data & 0x10) ? 1 : 0); /* Various bitstream tunes */ port_1_last = data; } /*******************************************************/ /* */ /* lrescue, grescue, lrescuem, desterth */ /* */ /*******************************************************/ static const char *const lrescue_sample_names[] = { "*lrescue", "alienexplosion.wav", "rescueshipexplosion.wav", "beamgun.wav", "thrust.wav", "bonus2.wav", "bonus3.wav", "shootingstar.wav", "stepl.wav", "steph.wav", 0 }; const samples_interface lrescue_samples_interface = { 4, /* 4 channels */ lrescue_sample_names }; WRITE8_HANDLER( lrescue_sh_port_1_w ) { UINT8 rising_bits = data & ~port_1_last; if (rising_bits & 0x01) sample_start(0, 3, 0); /* Thrust */ if (rising_bits & 0x02) sample_start(1, 2, 0); /* Shot Sound */ if (rising_bits & 0x04) sample_start(0, 1, 0); /* Death */ if (rising_bits & 0x08) sample_start(1, 0, 0); /* Alien Hit */ if (rising_bits & 0x10) sample_start(2, 5, 0); /* Bonus Ship (not confirmed) */ sound_global_enable(data & 0x20); c8080bw_screen_red_w(data & 0x04); port_1_last = data; } WRITE8_HANDLER( lrescue_sh_port_2_w ) { UINT8 rising_bits = data & ~port_2_last; if (rising_bits & 0x01) sample_start(1, 8, 0); /* Footstep high tone */ if (rising_bits & 0x02) sample_start(1, 7, 0); /* Footstep low tone */ if (rising_bits & 0x04) sample_start(1, 4, 0); /* Bonus when counting men saved */ speaker_level_w(0, (data & 0x08) ? 1 : 0); /* Bitstream tunes - endlevel and bonus1 */ if (rising_bits & 0x10) sample_start(3, 6, 0); /* Shooting Star and Rescue Ship sounds */ if (~data & 0x10 && port_2_last & 0x10) sample_stop (3); /* This makes the rescue ship sound beep on and off */ c8080bw_flip_screen_w(space, data & 0x20); port_2_last = data; } /*******************************************************/ /* */ /* Cosmo */ /* */ /*******************************************************/ WRITE8_HANDLER( cosmo_sh_port_2_w ) { /* inverted flip screen bit */ invadpt2_sh_port_2_w(space, offset, data ^ 0x20); } /*******************************************************/ /* */ /* Taito "Balloon Bomber" */ /* The sounds are not the correct ones */ /* */ /*******************************************************/ WRITE8_HANDLER( ballbomb_sh_port_1_w ) { UINT8 rising_bits = data & ~port_1_last; if (rising_bits & 0x01) sample_start(1, 2, 0); /* Hit a balloon */ if (rising_bits & 0x02) sample_start(2, 0, 0); /* Shot Sound */ if (rising_bits & 0x04) sample_start(2, 1, 0); /* Base Hit */ if (rising_bits & 0x08) sample_start(1, 7, 0); /* Hit a Bomb */ if (rising_bits & 0x10) sample_start(3, 8, 0); /* Bonus Base at 1500 points */ sound_global_enable(data & 0x20); c8080bw_screen_red_w(data & 0x04); port_1_last = data; } WRITE8_HANDLER( ballbomb_sh_port_2_w ) { UINT8 rising_bits = data & ~port_2_last; if (data & 0x01) sample_start(0, 7, 0); /* Indicates plane will drop bombs */ if (data & 0x04) sample_start(0, 4, 0); /* Plane is dropping new balloons at start of level */ if (rising_bits & 0x10) sample_start(2, 2, 0); /* Balloon hit and bomb drops */ c8080bw_flip_screen_w(space, data & 0x20); port_2_last = data; } /*******************************************************/ /* */ /* Taito "Indian Battle" */ /* Sept 2005, D.R. */ /*******************************************************/ static const discrete_dac_r1_ladder indianbt_music_dac = {3, {0, RES_K(47), RES_K(12)}, 0, 0, 0, CAP_U(0.1)}; #define INDIANBT_MUSIC_CLK (7680.0*2*2*2) /* Nodes - Inputs */ #define INDIANBT_MUSIC_DATA NODE_01 /* Nodes - Sounds */ #define INDIANBT_MUSIC NODE_11 DISCRETE_SOUND_START(indianbt) DISCRETE_INPUT_DATA (INDIANBT_MUSIC_DATA) /****************************************************************************** * * Music Generator * ******************************************************************************/ DISCRETE_NOTE(NODE_20, 1, INDIANBT_MUSIC_CLK, INDIANBT_MUSIC_DATA, 255, 5, DISC_CLK_IS_FREQ) // Convert count to 7492 output DISCRETE_TRANSFORM2(NODE_21, NODE_20, 2, "01>0+") DISCRETE_DAC_R1(NODE_22, 1, NODE_21, DEFAULT_TTL_V_LOGIC_1, &indianbt_music_dac) /****************************************************************************** * * Final Mixing and Output * ******************************************************************************/ DISCRETE_CRFILTER(NODE_90, 1, NODE_22, RES_K(10), CAP_U(0.1)) DISCRETE_OUTPUT(NODE_90, 21000) DISCRETE_SOUND_END WRITE8_HANDLER( indianbt_sh_port_1_w ) { /* bit 4 occurs every 5.25 seconds during gameplay */ UINT8 rising_bits = data & ~port_1_last; if (rising_bits & 0x01) sample_start(1, 7, 0); /* Death */ if (rising_bits & 0x02) sample_start(0, 1, 0); /* Shot Sound */ if (rising_bits & 0x04) sample_start(2, 3, 0); /* Move */ if (rising_bits & 0x08) sample_start(3, 2, 0); /* Hit */ sound_global_enable(data & 0x20); c8080bw_screen_red_w(data & 0x01); port_1_last = data; } WRITE8_HANDLER( indianbt_sh_port_2_w ) { UINT8 rising_bits = data & ~port_2_last; if (rising_bits & 0x01) sample_start(4, 0, 0); /* Bird dropped an egg, Lasso used */ if (rising_bits & 0x02) sample_start(4, 2, 0); /* Egg hatches, egg shot */ if (rising_bits & 0x08) sample_start(5, 0, 0); /* Grabber, Lasso caught something */ if (rising_bits & 0x10) sample_start(3, 7, 0); /* Lasso sound */ port_2_last = data; } WRITE8_HANDLER( indianbt_sh_port_3_w ) { discrete_sound_w(space, INDIANBT_MUSIC_DATA, data); } /*******************************************************************/ /* */ /* Taito "Polaris" */ /* */ /* D.R. */ /* The R/C values in the schematic may have no bearing in reality. */ /* I have noted some differences from a real board. */ /* */ /*******************************************************************/ static const discrete_lfsr_desc polaris_lfsr={ DISC_CLK_IS_FREQ, 17, /* Bit Length */ 0, /* Reset Value */ 4, /* Use Bit 4 as XOR input 0 */ 16, /* Use Bit 16 as XOR input 1 */ DISC_LFSR_XOR, /* Feedback stage1 is XOR */ DISC_LFSR_OR, /* Feedback stage2 is just stage 1 output OR with external feed */ DISC_LFSR_REPLACE, /* Feedback stage3 replaces the shifted register contents */ 0x000001, /* Everything is shifted into the first bit only */ 0, /* Output is not inverted */ 12 /* Output bit */ }; static const discrete_dac_r1_ladder polaris_music_dac = {2, {RES_K(47), RES_K(12), 0,0,0,0,0,0}, 0, 0, 0, CAP_P(180)}; static const discrete_op_amp_filt_info polaris_music_op_amp_filt_info = {RES_K(580), 0, 0, RES_M(2.2), RES_M(1), CAP_U(.01), 0, 0, 0, 12, 0}; static const discrete_op_amp_filt_info polaris_nol_op_amp_filt_info = {560, RES_K(6.8), RES_K(1002), RES_M(2.2), RES_M(1), CAP_U(.22), CAP_U(.22), CAP_U(1), 0, 12, 0}; static const discrete_op_amp_filt_info polaris_noh_op_amp_filt_info = {560, RES_K(6.8), RES_K(1002), RES_M(2.2), RES_M(1), CAP_U(.001), CAP_U(.001), CAP_U(.01), 0, 12, 0}; static const discrete_op_amp_osc_info polaris_sonar_vco_info = {DISC_OP_AMP_OSCILLATOR_VCO_1 | DISC_OP_AMP_IS_NORTON | DISC_OP_AMP_OSCILLATOR_OUT_CAP, RES_M(1), RES_K(680), RES_K(680), RES_M(1), RES_M(1), RES_K(120), RES_M(1), 0, CAP_P(180), 12}; static const discrete_op_amp_tvca_info polaris_sonar_tvca_info = { RES_M(2.7), RES_K(680), 0, RES_K(680), RES_K(1), RES_K(120), RES_K(560), 0, 0, 0, 0, CAP_U(1), 0, 0, 12, 12, 12, 12, DISC_OP_AMP_TRIGGER_FUNCTION_NONE, DISC_OP_AMP_TRIGGER_FUNCTION_NONE, DISC_OP_AMP_TRIGGER_FUNCTION_TRG1, DISC_OP_AMP_TRIGGER_FUNCTION_TRG0_INV, DISC_OP_AMP_TRIGGER_FUNCTION_NONE, DISC_OP_AMP_TRIGGER_FUNCTION_NONE}; static const discrete_op_amp_osc_info polaris_boat_mod_info = {DISC_OP_AMP_OSCILLATOR_1 | DISC_OP_AMP_IS_NORTON | DISC_OP_AMP_OSCILLATOR_OUT_CAP, RES_M(1), RES_K(10), RES_K(100), RES_K(120), RES_M(1), 0, 0, 0, CAP_U(.22), 12}; static const discrete_op_amp_osc_info polaris_boat_vco_info = {DISC_OP_AMP_OSCILLATOR_VCO_1 | DISC_OP_AMP_IS_NORTON | DISC_OP_AMP_OSCILLATOR_OUT_CAP, RES_M(1), RES_K(680), RES_K(680), RES_M(1), RES_M(1), 0, 0, 0, CAP_P(180), 12}; static const discrete_op_amp_tvca_info polaris_shot_tvca_info = { RES_M(2.7), RES_K(680), RES_K(680), RES_K(680), RES_K(1), 0, RES_K(680), 0, 0, 0, 0, CAP_U(1), 0, 0, 12, 12, 12, 12, DISC_OP_AMP_TRIGGER_FUNCTION_TRG0_INV, DISC_OP_AMP_TRIGGER_FUNCTION_TRG0, DISC_OP_AMP_TRIGGER_FUNCTION_TRG0, DISC_OP_AMP_TRIGGER_FUNCTION_NONE, DISC_OP_AMP_TRIGGER_FUNCTION_NONE, DISC_OP_AMP_TRIGGER_FUNCTION_NONE}; static const discrete_op_amp_tvca_info polaris_shiphit_tvca_info = { RES_M(2.7), RES_K(680), RES_K(680), RES_K(680), RES_K(1), 0, RES_K(680), 0, 0, 0, 0, CAP_U(1), 0, 0, 12, 12, 12, 12, DISC_OP_AMP_TRIGGER_FUNCTION_TRG0_INV, DISC_OP_AMP_TRIGGER_FUNCTION_NONE, DISC_OP_AMP_TRIGGER_FUNCTION_TRG0, DISC_OP_AMP_TRIGGER_FUNCTION_NONE, DISC_OP_AMP_TRIGGER_FUNCTION_NONE, DISC_OP_AMP_TRIGGER_FUNCTION_NONE}; static const discrete_op_amp_tvca_info polaris_exp_tvca_info = { RES_M(2.7), RES_K(680), 0, RES_K(680), RES_K(1), 0, RES_K(680), 0, 0, 0, 0, CAP_U(.33), 0, 0, 12, 12, 12, 12, DISC_OP_AMP_TRIGGER_FUNCTION_NONE, DISC_OP_AMP_TRIGGER_FUNCTION_NONE, DISC_OP_AMP_TRIGGER_FUNCTION_TRG0, DISC_OP_AMP_TRIGGER_FUNCTION_NONE, DISC_OP_AMP_TRIGGER_FUNCTION_NONE, DISC_OP_AMP_TRIGGER_FUNCTION_NONE}; // The schematic shows a .22uF cap but Guru's board has a 1uF static const discrete_op_amp_tvca_info polaris_hit_tvca_info = { RES_M(2.7), RES_K(1360), RES_K(1360), RES_K(680), RES_K(1), 0, RES_K(680), 0, 0, 0, 0, CAP_U(1), 0, 0, 12, 12, 12, 12, DISC_OP_AMP_TRIGGER_FUNCTION_TRG0, DISC_OP_AMP_TRIGGER_FUNCTION_TRG1, DISC_OP_AMP_TRIGGER_FUNCTION_TRG01_NAND, DISC_OP_AMP_TRIGGER_FUNCTION_NONE, DISC_OP_AMP_TRIGGER_FUNCTION_NONE, DISC_OP_AMP_TRIGGER_FUNCTION_NONE}; // The schematic shows a 1uF cap but Guru's board has a 2.2uF static const discrete_integrate_info polaris_plane_integrate_info = {DISC_INTEGRATE_OP_AMP_2 | DISC_OP_AMP_IS_NORTON, RES_K(1001), RES_K(1001), RES_K(101), CAP_U(2.2), 12, 12, DISC_OP_AMP_TRIGGER_FUNCTION_TRG0, DISC_OP_AMP_TRIGGER_FUNCTION_TRG0_INV, DISC_OP_AMP_TRIGGER_FUNCTION_TRG1_INV}; // A bit of a cheat. The schematic show the cap as 47p, but that makes the frequency too high. // Guru's board has a .01 cap, which would make the freq sub-sonic using the other schematic values. // I will use 2000p until the proper values can be confirmed. static const discrete_op_amp_osc_info polaris_plane_vco_info = {DISC_OP_AMP_OSCILLATOR_VCO_1 | DISC_OP_AMP_IS_NORTON | DISC_OP_AMP_OSCILLATOR_OUT_CAP, RES_M(1), RES_K(680), RES_K(680), RES_M(1), RES_M(1), RES_K(100), RES_K(10), RES_K(100), CAP_U(0.002), 12}; static const discrete_mixer_desc polaris_mixer_vr1_desc = {DISC_MIXER_IS_RESISTOR, {RES_K(66), RES_K(43), RES_K(20), RES_K(43)}, {0}, // no variable resistors {CAP_U(1), CAP_U(1), CAP_U(1), CAP_U(1)}, 0, RES_K(50), 0, 0, 0, 1}; static const discrete_mixer_desc polaris_mixer_vr2_desc = {DISC_MIXER_IS_RESISTOR, {RES_K(66), RES_K(110)}, {0}, // no variable resistors {CAP_U(1), CAP_U(1)}, 0, RES_K(50), 0, 0, 0, 1}; // Note: the final gain leaves the explosions (SX3) at a level // where they clip. From the schematics, this is how they wanted it. // This makes them have more bass and distortion. static const discrete_mixer_desc polaris_mixer_vr4_desc = {DISC_MIXER_IS_RESISTOR, {RES_K(22), RES_K(20), RES_K(22), RES_K(22)}, {0}, // no variable resistors {0, CAP_U(1), 0, 0}, 0, RES_K(50), 0, CAP_U(1), 0, 40000}; /* Nodes - Inputs */ #define POLARIS_MUSIC_DATA NODE_01 #define POLARIS_SX0_EN NODE_02 #define POLARIS_SX1_EN NODE_03 #define POLARIS_SX2_EN NODE_04 #define POLARIS_SX3_EN NODE_05 #define POLARIS_SX5_EN NODE_06 #define POLARIS_SX6_EN NODE_07 #define POLARIS_SX7_EN NODE_08 #define POLARIS_SX9_EN NODE_09 #define POLARIS_SX10_EN NODE_10 /* Nodes - Sounds */ #define POLARIS_MUSIC NODE_11 #define POLARIS_NOISE_LO NODE_12 #define POLARIS_NOISE_LO_FILT NODE_13 #define POLARIS_NOISE_HI_FILT NODE_14 #define POLARIS_SHOTSND NODE_15 #define POLARIS_SHIP_HITSND NODE_16 #define POLARIS_SHIPSND NODE_17 #define POLARIS_EXPLOSIONSND NODE_18 #define POLARIS_PLANESND NODE_19 #define POLARIS_HITSND NODE_20 #define POLARIS_SONARSND NODE_21 /* Nodes - Adjust */ #define POLARIS_ADJ_VR1 NODE_23 #define POLARIS_ADJ_VR2 NODE_24 #define POLARIS_ADJ_VR3 NODE_25 DISCRETE_SOUND_START(polaris) /************************************************/ /* Polaris sound system: 8 Sound Sources */ /* */ /* Relative volumes are adjustable */ /* */ /************************************************/ /************************************************/ /* Input register mapping for polaris */ /************************************************/ DISCRETE_INPUT_DATA (POLARIS_MUSIC_DATA) DISCRETE_INPUT_LOGIC(POLARIS_SX0_EN) DISCRETE_INPUT_LOGIC(POLARIS_SX1_EN) DISCRETE_INPUT_LOGIC(POLARIS_SX2_EN) DISCRETE_INPUT_LOGIC(POLARIS_SX3_EN) DISCRETE_INPUT_LOGIC(POLARIS_SX5_EN) DISCRETE_INPUT_LOGIC(POLARIS_SX6_EN) DISCRETE_INPUT_LOGIC(POLARIS_SX7_EN) DISCRETE_INPUT_LOGIC(POLARIS_SX9_EN) DISCRETE_INPUT_LOGIC(POLARIS_SX10_EN) /* We will cheat and just use the controls to scale the amplitude. */ /* It is the same as taking the (0 to 50k)/50k */ DISCRETE_ADJUSTMENT_TAG(POLARIS_ADJ_VR1, 0, 1, DISC_LINADJ, "VR1") DISCRETE_ADJUSTMENT_TAG(POLARIS_ADJ_VR2, 0, 1, DISC_LINADJ, "VR2") /* Extra cheating for VR3. We will include the resistor scaling. */ DISCRETE_ADJUSTMENT_TAG(POLARIS_ADJ_VR3, 0, 0.5376, DISC_LINADJ, "VR3") /****************************************************************************** * * Music Generator * * This is a simulation of the following circuit: * 555 Timer (Ra = 1k, Rb = 1k, C =.01uF) running at 48kHz. Connected to a * 1 bit counter (/2) for 24kHz. But I will use the frequency measured by Guru. * This is then sent to a preloadable 8 bit counter (4G & 4H), which loads the * value from Port 2 when overflowing from 0xFF to 0x00. Therefore it divides * by 2 (Port 2 = FE) to 256 (Port 2 = 00). * This goes to a 2 bit counter (5H) which has a 47k resistor on Q0 and a 12k on Q1. * This creates a sawtooth ramp of: 0%, 12/59%, 47/59%, 100% then back to 0% * * Note that there is no music disable line. When there is no music, the game * sets the oscillator to 0Hz. (Port 2 = FF) * ******************************************************************************/ DISCRETE_NOTE(NODE_30, 1, 23396, POLARIS_MUSIC_DATA, 255, 3, DISC_CLK_IS_FREQ) DISCRETE_DAC_R1(NODE_31, 1, NODE_30, DEFAULT_TTL_V_LOGIC_1, &polaris_music_dac) DISCRETE_OP_AMP_FILTER(NODE_32, 1, NODE_31, 0, DISC_OP_AMP_FILTER_IS_HIGH_PASS_0 | DISC_OP_AMP_IS_NORTON, &polaris_music_op_amp_filt_info) DISCRETE_MULTIPLY(POLARIS_MUSIC, 1, NODE_32, POLARIS_ADJ_VR3) /****************************************************************************** * * Background Sonar Sound * * This is a background sonar that plays at all times during the game. * It is a VCO triangle wave genarator, that uses the Low frequency filtered * noise source to modulate the frequency. * This is then amplitude modulated, by some fancy clocking scheme. * It is disabled during SX3. (No sonar when you die.) * * 5L pin 6 divides 60Hz by 16. This clocks the sonar. * 5K pin 9 is inverted by 5F, and then the 0.1uF;1M;270k;1S1588 diode circuit * makes a one shot pulse of approx. 15ms to keep the noise working. * ******************************************************************************/ DISCRETE_SQUAREWFIX(NODE_40, 1, 60.0/16, 1, 50, 1.0/2, 0) // IC 5L, pin 6 DISCRETE_COUNTER(NODE_41, 1, 0, NODE_40, 31, 1, 0, DISC_CLK_ON_F_EDGE) // IC 5L & 5F DISCRETE_TRANSFORM2(NODE_42, NODE_41, 4, "01&") // IC 5L, pin 9 DISCRETE_TRANSFORM2(NODE_43, NODE_41, 16, "01&!") // IC 5F, pin 8 DISCRETE_ONESHOT(NODE_44, NODE_43, 1, 0.0015, DISC_ONESHOT_REDGE | DISC_ONESHOT_NORETRIG | DISC_OUT_ACTIVE_HIGH) DISCRETE_LOGIC_OR(NODE_45, 1, NODE_42, POLARIS_SX3_EN) DISCRETE_LOGIC_DFLIPFLOP(NODE_46, 1, 1, 1, NODE_40, NODE_45) DISCRETE_OP_AMP_VCO1(NODE_47, 1, POLARIS_NOISE_LO_FILT, &polaris_sonar_vco_info) DISCRETE_OP_AMP_TRIG_VCA(POLARIS_SONARSND, NODE_45, NODE_46, 0, NODE_47, 0, &polaris_sonar_tvca_info) /****************************************************************************** * * Noise sources * * The frequencies for the noise sources were Measured by Guru. * * The output of the shift register is buffered by an op-amp which limits * the output to 0V and (12V - OP_AMP_NORTON_VBE) * ******************************************************************************/ DISCRETE_LFSR_NOISE(POLARIS_NOISE_LO, 1, 1, 800.8, (12.0 - OP_AMP_NORTON_VBE), NODE_44, (12.0 - OP_AMP_NORTON_VBE)/2, &polaris_lfsr) // Unfiltered Lo noise. 7K pin 4. // Filtered Lo noise. 7K pin 5. DISCRETE_OP_AMP_FILTER(POLARIS_NOISE_LO_FILT, 1, POLARIS_NOISE_LO, 0, DISC_OP_AMP_FILTER_IS_BAND_PASS_0 | DISC_OP_AMP_IS_NORTON, &polaris_nol_op_amp_filt_info) DISCRETE_LFSR_NOISE(NODE_50, 1, 1, 23396, (12.0 - OP_AMP_NORTON_VBE), NODE_44, (12.0 - OP_AMP_NORTON_VBE)/2, &polaris_lfsr) // 7K pin 10 // Filtered Hi noise. 6B pin 10. - This does not really do much. Sample rates of 98k+ are needed for this high of filtering. DISCRETE_OP_AMP_FILTER(POLARIS_NOISE_HI_FILT, 1, NODE_50, 0, DISC_OP_AMP_FILTER_IS_BAND_PASS_0 | DISC_OP_AMP_IS_NORTON, &polaris_noh_op_amp_filt_info) /****************************************************************************** * * Shot - SX0 (When player shoots) * * When Enabled it makes a low frequency RC filtered noise. As soon as it * disables, it switches to a high frequency RC filtered noise with the volume * decaying based on the RC values of 680k and 1uF. * ******************************************************************************/ DISCRETE_OP_AMP_TRIG_VCA(POLARIS_SHOTSND, POLARIS_SX0_EN, 0, 0, POLARIS_NOISE_HI_FILT, POLARIS_NOISE_LO_FILT, &polaris_shot_tvca_info) /****************************************************************************** * * Ship Hit - SX1 (When sub is hit) * * When Enabled it makes a low frequency RC filtered noise. As soon as it * disables, it's volume starts decaying based on the RC values of 680k and * 1uF. Also as it decays, a decaying high frequency RC filtered noise is * mixed in. * ******************************************************************************/ DISCRETE_OP_AMP_TRIG_VCA(POLARIS_SHIP_HITSND, POLARIS_SX1_EN, 0, 0, POLARIS_NOISE_HI_FILT, POLARIS_NOISE_LO_FILT, &polaris_shiphit_tvca_info) /****************************************************************************** * * Ship - SX2 (When boat moves across screen) * * This uses a 5.75Hz |\|\ sawtooth to modulate the frequency of a * voltage controlled triangle wave oscillator. * * ******************************************************************************/ DISCRETE_OP_AMP_OSCILLATOR(NODE_60, 1, &polaris_boat_mod_info) DISCRETE_OP_AMP_VCO1(POLARIS_SHIPSND, POLARIS_SX2_EN, NODE_60, &polaris_boat_vco_info) /****************************************************************************** * * Explosion - SX3 (When player, boat or boss plane is hit) * * When Enabled it makes a low frequency noise. As soon as it disables, it's * volume starts decaying based on the RC values of 680k and 0.33uF. The * final output is RC filtered. * * Note that when this is triggered, the sonar sound clock is disabled. * ******************************************************************************/ DISCRETE_OP_AMP_TRIG_VCA(NODE_70, POLARIS_SX3_EN, 0, 0, POLARIS_NOISE_LO, 0, &polaris_exp_tvca_info) DISCRETE_RCFILTER(NODE_71, 1, NODE_70, 560.0, CAP_U(.22)) DISCRETE_RCFILTER(POLARIS_EXPLOSIONSND, 1, NODE_71, RES_K(6.8), CAP_U(.22)) /****************************************************************************** * * Plane Down - SX6 * Plane Up - SX7 * * The oscillator is enabled when SX7 goes high. When SX6 is enabled the * frequency lowers. When SX6 is disabled the frequency ramps back up. * Also some NOISE_HI_FILT is mixed in so the frequency varies some. * ******************************************************************************/ DISCRETE_INTEGRATE(NODE_80, POLARIS_SX6_EN, POLARIS_SX7_EN, &polaris_plane_integrate_info) DISCRETE_OP_AMP_VCO2(POLARIS_PLANESND, POLARIS_SX7_EN, NODE_80, POLARIS_NOISE_HI_FILT, &polaris_plane_vco_info) /****************************************************************************** * * HIT - SX9 & SX10 * * Following the schematic, 3 different sounds are produced. * SX10 SX9 Effect * 0 0 no sound * 0 1 NOISE_HI_FILT while enabled * 1 0 NOISE_LO_FILT while enabled (When a regular plane is hit) * 1 1 NOISE_HI_FILT & NOISE_LO_FILT decaying imediately @ 680k, 0.22uF * ******************************************************************************/ DISCRETE_OP_AMP_TRIG_VCA(POLARIS_HITSND, POLARIS_SX10_EN, POLARIS_SX9_EN, 0, POLARIS_NOISE_LO_FILT, POLARIS_NOISE_HI_FILT, &polaris_hit_tvca_info) /****************************************************************************** * * Final Mixing and Output * ******************************************************************************/ DISCRETE_MIXER4(NODE_90, 1, POLARIS_SHOTSND, POLARIS_SONARSND, POLARIS_HITSND, POLARIS_PLANESND, &polaris_mixer_vr1_desc) DISCRETE_MULTIPLY(NODE_91, 1, NODE_90, POLARIS_ADJ_VR1) DISCRETE_MIXER2(NODE_92, 1, POLARIS_SHIPSND, POLARIS_SHIP_HITSND, &polaris_mixer_vr2_desc) DISCRETE_MULTIPLY(NODE_93, 1, NODE_92, POLARIS_ADJ_VR2) DISCRETE_MIXER4(NODE_94, POLARIS_SX5_EN, NODE_91, POLARIS_EXPLOSIONSND, NODE_93, POLARIS_MUSIC, &polaris_mixer_vr4_desc) DISCRETE_OUTPUT(NODE_94, 1) DISCRETE_SOUND_END WRITE8_HANDLER( polaris_sh_port_1_w ) { discrete_sound_w(space, POLARIS_MUSIC_DATA, data); } WRITE8_HANDLER( polaris_sh_port_2_w ) { /* 0x01 - SX0 - Shot */ discrete_sound_w(space, POLARIS_SX0_EN, data & 0x01); /* 0x02 - SX1 - Ship Hit (Sub) */ discrete_sound_w(space, POLARIS_SX1_EN, data & 0x02); /* 0x04 - SX2 - Ship */ discrete_sound_w(space, POLARIS_SX2_EN, data & 0x04); /* 0x08 - SX3 - Explosion */ discrete_sound_w(space, POLARIS_SX3_EN, data & 0x08); /* 0x10 - SX4 */ /* 0x20 - SX5 - Sound Enable */ discrete_sound_w(space, POLARIS_SX5_EN, data & 0x20); } WRITE8_HANDLER( polaris_sh_port_3_w ) { coin_lockout_global_w(data & 0x04); /* SX8 */ c8080bw_flip_screen_w(space, data & 0x20); /* SX11 */ /* 0x01 - SX6 - Plane Down */ discrete_sound_w(space, POLARIS_SX6_EN, data & 0x01); /* 0x02 - SX7 - Plane Up */ discrete_sound_w(space, POLARIS_SX7_EN, data & 0x02); /* 0x08 - SX9 - Hit */ discrete_sound_w(space, POLARIS_SX9_EN, data & 0x08); /* 0x10 - SX10 - Hit */ discrete_sound_w(space, POLARIS_SX10_EN, data & 0x10); } /*******************************************************/ /* */ /* Taito "Space Chaser" */ /* */ /* The SN76477 still needs to be routed to the */ /* discrete system for filtering. */ /*******************************************************/ /* * The dot sound is a square wave clocked by either the * the 8V or 4V signals * * The frequencies are (for the 8V signal): * * 19.968 MHz crystal / 2 (Qa of 74160 #10) -> 9.984MHz * / 2 (7474 #14) -> 4.992MHz * / 256+16 (74161 #5 and #8) -> 18352.94Hz * / 8 (8V) -> 2294.12 Hz * / 2 the final freq. is 2 toggles -> 1147.06Hz * * for 4V, it's double at 2294.12Hz */ #define SCHASER_HSYNC 18352.94 #define SCHASER_4V SCHASER_HSYNC /2 /4 #define SCHASER_8V SCHASER_HSYNC /2 /8 const sn76477_interface schaser_sn76477_interface = { RES_K( 47), /* 4 noise_res */ RES_K(330), /* 5 filter_res */ CAP_P(470), /* 6 filter_cap */ RES_M(2.2), /* 7 decay_res */ CAP_U(1.0), /* 8 attack_decay_cap */ RES_K(4.7), /* 10 attack_res */ 0, /* 11 amplitude_res (variable) */ RES_K(33), /* 12 feedback_res */ 0, /* 16 vco_voltage */ CAP_U(0.1), /* 17 vco_cap */ RES_K(39), /* 18 vco_res */ 5.0, /* 19 pitch_voltage */ RES_K(120), /* 20 slf_res */ CAP_U(1.0), /* 21 slf_cap */ CAP_U(0.1), /* 23 oneshot_cap */ RES_K(220), /* 24 oneshot_res */ 1, /* 22 vco */ 0, /* 26 mixer A */ 0, /* 25 mixer B */ 0, /* 27 mixer C */ 1, /* 1 envelope 1 */ 0, /* 28 envelope 2 */ 1 /* 9 enable (variable) */ }; /* Nodes - Inputs */ #define SCHASER_DOT_EN NODE_01 #define SCHASER_DOT_SEL NODE_02 #define SCHASER_EXP_STREAM NODE_03 #define SCHASER_MUSIC_BIT NODE_04 #define SCHASER_SND_EN NODE_05 /* Nodes - Adjusters */ #define SCHASER_VR1 NODE_07 #define SCHASER_VR2 NODE_08 #define SCHASER_VR3 NODE_09 /* Nodes - Sounds */ #define SCHASER_DOT_SND NODE_10 #define SCHASER_EXP_SND NODE_11 #define SCHASER_MUSIC_SND NODE_12 DISCRETE_SOUND_START(schaser) /************************************************/ /* Input register mapping for schaser */ /************************************************/ DISCRETE_INPUT_LOGIC (SCHASER_DOT_EN) DISCRETE_INPUT_LOGIC (SCHASER_DOT_SEL) // scale to 0-3.5V DISCRETE_INPUTX_STREAM(SCHASER_EXP_STREAM, 0, 1.0/14100, 2.323) DISCRETE_INPUTX_LOGIC (SCHASER_MUSIC_BIT, DEFAULT_TTL_V_LOGIC_1, 0, 0.0) DISCRETE_INPUT_LOGIC (SCHASER_SND_EN) /************************************************/ /* Volume adjusters. */ /* We will set them to adjust the realitive */ /* gains. */ /************************************************/ DISCRETE_ADJUSTMENT_TAG(SCHASER_VR1, 0, RES_K(50)/(RES_K(50) + RES_K(470)), DISC_LINADJ, "VR1") DISCRETE_ADJUSTMENT_TAG(SCHASER_VR2, 0, RES_K(50)/(RES_K(50) + 560 + RES_K(6.8) + RES_K(2)), DISC_LINADJ, "VR2") DISCRETE_ADJUSTMENT_TAG(SCHASER_VR3, 0, RES_K(50)/(RES_K(50) + 560 + RES_K(6.8) + RES_K(10)), DISC_LINADJ, "VR3") /************************************************/ /* Dot selection just selects between 4V and 8V */ /************************************************/ DISCRETE_SQUAREWFIX(NODE_20, 1, SCHASER_4V, DEFAULT_TTL_V_LOGIC_1, 50, 0, 0) DISCRETE_SQUAREWFIX(NODE_21, 1, SCHASER_8V, DEFAULT_TTL_V_LOGIC_1, 50, 0, 0) DISCRETE_SWITCH(NODE_22, SCHASER_DOT_EN, SCHASER_DOT_SEL, NODE_20, NODE_21) DISCRETE_RCFILTER(NODE_23, 1, NODE_22, 560, CAP_U(.1)) DISCRETE_RCFILTER(NODE_24, 1, NODE_23, RES_K(6.8) + 560, CAP_U(.1)) DISCRETE_MULTIPLY(SCHASER_DOT_SND, 1, NODE_24, SCHASER_VR3) /************************************************/ /* Explosion/Effect filtering */ /************************************************/ DISCRETE_RCFILTER(NODE_30, 1, SCHASER_EXP_STREAM, 560, CAP_U(.1)) DISCRETE_RCFILTER(NODE_31, 1, NODE_30, RES_K(6.8) + 560, CAP_U(.1)) DISCRETE_CRFILTER(NODE_32, 1, NODE_31, RES_K(6.8) + 560 + RES_K(2) + RES_K(50), CAP_U(1)) DISCRETE_MULTIPLY(SCHASER_EXP_SND, 1, NODE_32, SCHASER_VR2) /************************************************/ /* Music is just a 1 bit DAC */ /************************************************/ DISCRETE_CRFILTER(NODE_40, 1, SCHASER_MUSIC_BIT, RES_K(470) + RES_K(50), CAP_U(.01)) DISCRETE_MULTIPLY(SCHASER_MUSIC_SND, 1, NODE_40, SCHASER_VR1) /************************************************/ /* Final mix with gain */ /************************************************/ DISCRETE_ADDER3(NODE_90, SCHASER_SND_EN, SCHASER_DOT_SND, SCHASER_EXP_SND, SCHASER_MUSIC_SND) DISCRETE_OUTPUT(NODE_90, 33080) DISCRETE_SOUND_END static const double schaser_effect_rc[8] = { 0, (RES_K(82) + RES_K(20)) * CAP_U(1), (RES_K(39) + RES_K(20)) * CAP_U(1), (1.0/ (1.0/RES_K(82) + 1.0/RES_K(39)) + RES_K(20)) * CAP_U(1), (RES_K(15) + RES_K(20)) * CAP_U(1), (1.0/ (1.0/RES_K(82) + 1.0/RES_K(15)) + RES_K(20)) * CAP_U(1), (1.0/ (1.0/RES_K(39) + 1.0/RES_K(15)) + RES_K(20)) * CAP_U(1), (1.0/ (1.0/RES_K(82) + 1.0/RES_K(39) + 1.0/RES_K(15)) + RES_K(20)) * CAP_U(1) }; WRITE8_HANDLER( schaser_sh_port_1_w ) { static int last_effect = 0; int effect; /* bit 0 - Dot Sound Enable (SX0) bit 1 - Dot Sound Pitch (SX1) bit 2 - Effect Sound A (SX2) bit 3 - Effect Sound B (SX3) bit 4 - Effect Sound C (SX4) bit 5 - Explosion (SX5) */ discrete_sound_w(space, SCHASER_DOT_EN, data & 0x01); discrete_sound_w(space, SCHASER_DOT_SEL, data & 0x02); /* The effect is a variable rate 555 timer. A diode/resistor array is used to * select the frequency. Because of the diode voltage drop, we can not use the * standard 555 time formulas. Also, when effect=0, the charge resistor * is disconnected. This causes the charge on the cap to slowly bleed off, but * but the bleed time is so long, that we can just cheat and put the time on hold * when effect = 0. */ effect = (data >> 2) & 0x07; if (last_effect != effect) { if (effect) { if (attotime_compare(schaser_effect_555_time_remain, attotime_zero) != 0) { /* timer re-enabled, use up remaining 555 high time */ timer_adjust_oneshot(schaser_effect_555_timer, schaser_effect_555_time_remain, effect); } else if (!schaser_effect_555_is_low) { /* set 555 high time */ attotime new_time = attotime_make(0, ATTOSECONDS_PER_SECOND * .8873 * schaser_effect_rc[effect]); timer_adjust_oneshot(schaser_effect_555_timer, new_time, effect); } } else { /* disable effect - stops at end of low cycle */ if (!schaser_effect_555_is_low) { schaser_effect_555_time_remain = timer_timeleft(schaser_effect_555_timer); timer_adjust_oneshot(schaser_effect_555_timer, attotime_never, 0); } } last_effect = effect; } schaser_explosion = (data >> 5) & 0x01; if (schaser_explosion) { sn76477_amplitude_res_w(0, 1.0 / (1.0/RES_K(200) + 1.0/RES_K(68))); } else { sn76477_amplitude_res_w(0, RES_K(200)); } sn76477_enable_w(0, !(schaser_effect_555_is_low || schaser_explosion)); sn76477_one_shot_cap_voltage_w(0, !(schaser_effect_555_is_low || schaser_explosion) ? 0 : SN76477_EXTERNAL_VOLTAGE_DISCONNECT); sn76477_mixer_b_w(0, schaser_explosion); } WRITE8_HANDLER( schaser_sh_port_2_w ) { /* bit 0 - Music (DAC) (SX6) bit 1 - Sound Enable (SX7) bit 2 - Coin Lockout (SX8) bit 3 - Field Control A (SX9) bit 4 - Field Control B (SX10) bit 5 - Flip Screen */ discrete_sound_w(space, SCHASER_MUSIC_BIT, data & 0x01); discrete_sound_w(space, SCHASER_SND_EN, data & 0x02); sound_global_enable(data & 0x02); coin_lockout_global_w(data & 0x04); schaser_background_control_w(data & 0x18); c8080bw_flip_screen_w(space, data & 0x20); } static TIMER_CALLBACK( schaser_effect_555_cb ) { int effect = param; attotime new_time; /* Toggle 555 output */ schaser_effect_555_is_low = !schaser_effect_555_is_low; schaser_effect_555_time_remain = attotime_zero; if (schaser_effect_555_is_low) new_time = attotime_div(PERIOD_OF_555_ASTABLE(0, RES_K(20), CAP_U(1)), 2); else { if (effect) new_time = attotime_make(0, ATTOSECONDS_PER_SECOND * .8873 * schaser_effect_rc[effect]); else new_time = attotime_never; } timer_adjust_oneshot(schaser_effect_555_timer, new_time, effect); sn76477_enable_w(0, !(schaser_effect_555_is_low || schaser_explosion)); sn76477_one_shot_cap_voltage_w(0, !(schaser_effect_555_is_low || schaser_explosion) ? 0 : SN76477_EXTERNAL_VOLTAGE_DISCONNECT); } MACHINE_START( schaser ) { schaser_effect_555_timer = timer_alloc(machine, schaser_effect_555_cb, NULL); MACHINE_START_CALL(mw8080bw); } MACHINE_RESET( schaser ) { const address_space *space = cpu_get_address_space(machine->cpu[0], ADDRESS_SPACE_PROGRAM); schaser_effect_555_is_low = 0; timer_adjust_oneshot(schaser_effect_555_timer, attotime_never, 0); schaser_sh_port_1_w(space, 0, 0); schaser_sh_port_2_w(space, 0, 0); schaser_effect_555_time_remain = attotime_zero; MACHINE_RESET_CALL(mw8080bw); } /****************************************************/ /* Rolling Crash / Moon Base */ /* - Moon Base uses same ports and bits as invaders */ /* - Press Left or Right to choose game to play */ /****************************************************/ WRITE8_HANDLER( rollingc_sh_port_w ) { UINT8 rising_bits = data & ~port_3_last; if (rising_bits & 0x02) sample_start(4, 0, 0); /* Steering */ if (rising_bits & 0x04) sample_start(0, 1, 0); /* Collision */ if (rising_bits & 0x10) sample_start(1, 8, 0); /* Computer car is starting to move */ port_3_last = data; } /*************************************************************************************/ /* Invader's Revenge preliminary sound */ /* Correct samples not available */ /* Notes: */ /* Init sequence: 0x01 (20 times), 0x40 (20 times), 0x4c, 0x40, 0x44, 0x40 (9 times).*/ /* Player 1 start sequence: 0x0c, 0x20, 0x22. */ /* Start of Attract mode: 0x04. */ /* Unknown codes: 0x28, 0x2a, 0x0c, 0x34, 0x2c, 0x2e, 0x1c. */ /*************************************************************************************/ WRITE8_HANDLER( invrvnge_sh_port_w ) { switch (data) { case 0x06: sample_start(1, 0, 0); /* Shoot */ break; case 0x14: sample_start(2, 2, 0); /* Hit Alien */ break; case 0x16: sample_start(2, 5, 0); /* Hit Asteroid */ break; case 0x1e: sample_start(3, 1, 0); /* Death (followed by 0x0a byte), also bit 4 of port 5 */ break; case 0x18: /* Fuel Low */ case 0x30: /* Fuel bar filling up */ sample_start(4, 7, 0); break; case 0x02: /* Coin */ case 0x24: /* Alien dropping to steal fuel */ case 0x26: /* Alien lifting with fuel */ case 0x32: /* UFO drops a bomb */ break; case 0x3a: /* Thrust, Docking, extra ship? */ sample_start(0, 8, 0); break; } } /*****************************************/ /* Lupin III preliminary sound */ /* Correct samples not available */ /*****************************************/ WRITE8_HANDLER( lupin3_sh_port_1_w ) { UINT8 rising_bits = data & ~port_1_last; if (rising_bits & 0x01) sample_start(0, 6, 0); /* Walking, get money */ sn76477_enable_w(0, data & 0x02 ? 0:1); /* Helicopter */ if (rising_bits & 0x04) sample_start(0, 7, 0); /* Translocate */ if (rising_bits & 0x08) sample_start(0, 1, 0); /* Jail */ if (rising_bits & 0x10) sample_start(3, 8, 0); /* Bonus Man */ port_1_last = data; } WRITE8_HANDLER( lupin3_sh_port_2_w ) { UINT8 rising_bits = data & ~port_2_last; if (rising_bits & 0x01) sample_start(0, 3, 0); /* Lands on top of building, wife kicks man */ if (rising_bits & 0x02) sample_start(1, 2, 0); /* deposit money, start intermission, end game */ if (rising_bits & 0x04) sample_start(2, 5, 0); /* deposit money, start intermission, Slides down rope */ if (rising_bits & 0x08) sample_start(3, 0, 0); /* start intermission, end game */ //if (rising_bits & 0x10) sample_start(3, 9, 0); /* Dog barking */ c8080bw_flip_screen_w(space, data & 0x20); port_2_last = data; } /*****************************************/ /* Space Chaser (CV) preliminary sound */ /* Much more work needs to be done */ /*****************************************/ WRITE8_HANDLER( schasrcv_sh_port_1_w ) { /* bit 2 = 2nd speedup bit 3 = 1st speedup Death is a stream of ff's with some fe's thrown in */ UINT8 rising_bits = data & ~port_1_last; if (rising_bits & 0x02) sample_start(1, 6, 0); /* Ran over a dot */ if (rising_bits & 0x10) sample_start(0, 1, 0); /* Death */ port_1_last = data; } WRITE8_HANDLER( schasrcv_sh_port_2_w ) { speaker_level_w(0, (data & 0x01) ? 1 : 0); /* End-of-Level */ sound_global_enable(data & 0x10); c8080bw_flip_screen_w(space, data & 0x20); } /*******************************************************************/ /* Yosakdon preliminary sound */ /* No information available as what the correct sounds are */ /*******************************************************************/ WRITE8_HANDLER( yosakdon_sh_port_1_w ) { UINT8 rising_bits = data & ~port_1_last; if (rising_bits & 0x01) sample_start(0, 3, 0); /* Game Over */ if (rising_bits & 0x02) sample_start(2, 0, 0); /* Bird dead */ if (rising_bits & 0x04) sample_start(0, 1, 0); /* Rifle being fired */ if (rising_bits & 0x08) sample_start(1, 2, 0); /* Man dead */ if (rising_bits & 0x10) sample_start(5, 8, 0); /* Bonus Man? */ sound_global_enable(data & 0x20); port_1_last = data; } WRITE8_HANDLER( yosakdon_sh_port_2_w ) { UINT8 rising_bits = data & ~port_2_last; if (rising_bits & 0x01) sample_start(1, 6, 0); /* Ready? , Game Over */ if (rising_bits & 0x04) sample_start(3, 7, 0); /* Big bird dead */ sn76477_enable_w(0, data & 0x08 ? 0:1); /* Big bird */ if (rising_bits & 0x10) sample_start(2, 7, 0); /* Game Over */ c8080bw_flip_screen_w(space, data & 0x20); port_2_last = data; } /*****************************************/ /* shuttlei preliminary sound */ /* Proper samples are unavailable */ /*****************************************/ WRITE8_HANDLER( shuttlei_sh_port_1_w ) { /* bit 3 is high while you are alive and playing */ UINT8 rising_bits = data & ~port_1_last; if (rising_bits & 0x01) sample_start(4, 4, 0); /* Fleet move */ if (rising_bits & 0x02) sample_start(5, 8, 0); /* Extra Tank */ sn76477_enable_w(0, data & 0x04 ? 0:1); /* UFO */ port_1_last = data; } WRITE8_HANDLER( shuttlei_sh_port_2_w ) { switch (data) { case 0x23: sample_start(2, 2, 0); /* Hit */ break; case 0x2b: sample_start(0, 0, 0); /* Shoot */ break; case 0xa3: sample_start(3, 7, 0); /* Hit UFO */ break; case 0xab: sample_start(1, 1, 0); /* Death */ break; } }
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