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Diffstat (limited to 'src/mame/audio/firetrk.cpp')
-rw-r--r-- | src/mame/audio/firetrk.cpp | 692 |
1 files changed, 692 insertions, 0 deletions
diff --git a/src/mame/audio/firetrk.cpp b/src/mame/audio/firetrk.cpp new file mode 100644 index 00000000000..29120fa53ef --- /dev/null +++ b/src/mame/audio/firetrk.cpp @@ -0,0 +1,692 @@ +// license:BSD-3-Clause +// copyright-holders:Phil Stroffolino +/************************************************************************* + + audio\firetrk.c + +*************************************************************************/ + +#include "emu.h" +#include "includes/firetrk.h" +#include "sound/discrete.h" + + +WRITE8_MEMBER(firetrk_state::firetrk_skid_reset_w) +{ + m_skid[0] = 0; + m_skid[1] = 0; + + // also SUPERBUG_SKID_EN + m_discrete->write(space, FIRETRUCK_SKID_EN, 1); +} + + +WRITE8_MEMBER(firetrk_state::montecar_skid_reset_w) +{ + m_discrete->write(space, MONTECAR_SKID_EN, 1); +} + + +WRITE8_MEMBER(firetrk_state::firetrk_crash_snd_w) +{ + // also SUPERBUG_CRASH_DATA and MONTECAR_CRASH_DATA + m_discrete->write(space, FIRETRUCK_CRASH_DATA, data >> 4); +} + + +WRITE8_MEMBER(firetrk_state::firetrk_skid_snd_w) +{ + // also SUPERBUG_SKID_EN and MONTECAR_SKID_EN + m_discrete->write(space, FIRETRUCK_SKID_EN, 0); +} + + +WRITE8_MEMBER(firetrk_state::firetrk_motor_snd_w) +{ + // also MONTECAR_DRONE_MOTOR_DATA + m_discrete->write(space, FIRETRUCK_SIREN_DATA, data >> 4); + + // also MONTECAR_MOTOR_DATA + m_discrete->write(space, FIRETRUCK_MOTOR_DATA, data & 0x0f); +} + + +WRITE8_MEMBER(firetrk_state::superbug_motor_snd_w) +{ + m_discrete->write(space, SUPERBUG_SPEED_DATA, data & 0x0f); +} + + +WRITE8_MEMBER(firetrk_state::firetrk_xtndply_w) +{ + // also SUPERBUG_ASR_EN (extended play) + m_discrete->write(space, FIRETRUCK_XTNDPLY_EN, data); +} + + +#define FIRETRUCK_HSYNC 15750.0 /* not checked */ +#define FIRETRUCK_1V FIRETRUCK_HSYNC/2 +#define FIRETRUCK_2V FIRETRUCK_1V/2 +#define FIRETRUCK_8V FIRETRUCK_1V/8 +#define FIRETRUCK_64V FIRETRUCK_1V/64 + +/************************************************************************/ +/* firetrk Sound System Analog emulation by K.Wilkins Feb 2001 */ +/* Questions/Suggestions to mame@esplexo.co.uk */ +/* Modified and added superbug/montecar sounds. Jan 2003 D.R. */ +/* Complete re-write Feb 2004, D. Renaud */ +/************************************************************************/ + +static const discrete_lfsr_desc firetrk_lfsr={ + DISC_CLK_IS_FREQ, + 16, /* Bit Length */ + 0, /* Reset Value */ + 0, /* Use Bit 0 as XOR input 0 */ + 14, /* Use Bit 14 as XOR input 1 */ + DISC_LFSR_XNOR, /* Feedback stage1 is XNOR */ + 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 */ + 15 /* Output bit */ +}; + +static const discrete_dac_r1_ladder firetrk_motor_v_dac = +{ + 4, // size of ladder + {RES_M(2.2), RES_M(1), RES_K(470), RES_K(220), 0,0,0,0}, // R24, R23, R22, R21 + 4.4, // 5V - diode junction (0.6V) + RES_K(68), // R25 + 0, // no rGnd + CAP_U(10) // C24 +}; + +static const discrete_555_cc_desc firetrk_motor_vco = +{ + DISC_555_OUT_DC | DISC_555_OUT_SQW, + 5, // B+ voltage of 555 + DEFAULT_555_VALUES, + 0.7 // Q2 junction voltage +}; + +static const discrete_dac_r1_ladder firetrk_motor_out_dac = +{ + 4, // size of ladder + {RES_K(10), 0,0, RES_K(10)}, // R74, -, -, R73 + DEFAULT_TTL_V_LOGIC_1, + 0, // no rBias + 0, // no rGnd + CAP_U(0.1) // C43 +}; + +static const discrete_dac_r1_ladder firetrk_siren_cv_dac = +{ + 4, // size of ladder + {RES_M(2.2), RES_M(1), RES_K(470), RES_K(220), 0,0,0,0}, // R46, R47, R45, R48 + 5, // 5V + RES_K(100), // R49 + RES_K(390), // R44 + CAP_U(10) // C30 +}; + +static const discrete_555_desc firetrk_siren_555 = +{ + DISC_555_OUT_SQW | DISC_555_OUT_DC, + 5, // B+ voltage of 555 + DEFAULT_555_VALUES +}; + +static const discrete_dac_r1_ladder firetrk_bang_dac = +{ + 4, // size of ladder + {RES_K(8.2), RES_K(3.9), RES_K(2.2), RES_K(1), 0,0,0,0}, // R37, R35, R36, R34 + 0, // no vBias + 0, // no rBias + 0, // no rGnd + 0 // no smoothing cap +}; + +static const discrete_schmitt_osc_desc firetrk_screech_osc = +{ + RES_K(2.2), // R29 + 330, // R16 + CAP_U(2.2), // C8 + DEFAULT_74LS14_VALUES, + DISC_SCHMITT_OSC_IN_IS_LOGIC | DISC_SCHMITT_OSC_ENAB_IS_NOR +}; + +static const discrete_mixer_desc firetrk_mixer = +{ + DISC_MIXER_IS_OP_AMP, + {RES_K(4.7), RES_K(22), RES_K(31.333), RES_K(33), RES_K(10.5456), RES_K(32), RES_K(150)}, // R54, R55, R72||(R70+R71), R53, R56 + R37||R35||R36||R34, R58 + R73||R74, R52 + {0}, // No variable resistor nodes + {CAP_U(0.22), CAP_U(0.22), CAP_U(0.01), CAP_U(0.22), CAP_U(0.22), 0, CAP_U(0.22)}, // C34, C32, C44, C35, C33, NA, C31 + 0, // No rI + RES_K(22), // R43 + 0, // No Filter + CAP_U(10), // C12 + 5.0 * 820 / (270 + 820), // vBias = 5V * R51/(R41+R51) + 3400 // final gain +}; + +#define FIRETRUCK_ATTRACT_INV NODE_09 +/* Nodes - Sounds */ +#define FIRETRUCK_NOISE NODE_11 +#define FIRETRUCK_MOTORSND NODE_12 +#define FIRETRUCK_HORNSND NODE_13 +#define FIRETRUCK_SIRENSND NODE_14 +#define FIRETRUCK_BANGSND NODE_15 +#define FIRETRUCK_SCREECHSND NODE_16 +#define FIRETRUCK_BELLSND NODE_17 +#define FIRETRUCK_XTNDPLYSND NODE_18 + +DISCRETE_SOUND_START(firetrk) + /************************************************/ + /* Input register mapping for firetruck */ + /************************************************/ + DISCRETE_INPUT_DATA (FIRETRUCK_MOTOR_DATA) + DISCRETE_INPUT_LOGIC(FIRETRUCK_HORN_EN) + DISCRETE_INPUT_DATA (FIRETRUCK_SIREN_DATA) + DISCRETE_INPUTX_DATA(FIRETRUCK_CRASH_DATA , -1, 0x0f, 0) + DISCRETE_INPUT_LOGIC(FIRETRUCK_SKID_EN) + DISCRETE_INPUT_LOGIC(FIRETRUCK_BELL_EN) + DISCRETE_INPUT_LOGIC(FIRETRUCK_ATTRACT_EN) + DISCRETE_INPUT_NOT (FIRETRUCK_XTNDPLY_EN) + + DISCRETE_LOGIC_INVERT(FIRETRUCK_ATTRACT_INV, FIRETRUCK_ATTRACT_EN) + + /************************************************/ + /* Motor sound circuit is based on a 556 VCO */ + /* with the input frequency set by the MotorSND */ + /* latch (4 bit). This freqency is then used to */ + /* drive a modulo 12 counter, with div6 & div12 */ + /* summed as the output of the circuit. */ + /************************************************/ + DISCRETE_ADJUSTMENT(NODE_20, + RES_K(260), // R26 + R27 @ max + RES_K(10), // R26 + R27 @ min + DISC_LOGADJ, "R27") + DISCRETE_DAC_R1(NODE_21, // base of Q1 + FIRETRUCK_MOTOR_DATA, // IC F8, pins 2,5,6,9 + DEFAULT_TTL_V_LOGIC_1, + &firetrk_motor_v_dac) + DISCRETE_555_CC(NODE_22, 1, // IC B9 pin 3, always enabled + NODE_21, // vIn + NODE_20, // current adjust + CAP_U(0.01), // C25 + RES_M(1), 0, 0, // R28, no rGnd, no rDis + &firetrk_motor_vco) + DISCRETE_COUNTER_7492(NODE_23, 1, FIRETRUCK_ATTRACT_EN, // IC A9, QB-QD + NODE_22, DISC_CLK_ON_F_EDGE) // from IC B9, pin 3 + DISCRETE_TRANSFORM2(NODE_24, NODE_23, 0x04, "01&") // IC A9, pin 8 + DISCRETE_COUNTER(NODE_25, 1, FIRETRUCK_ATTRACT_EN, // IC A9, pin 12 + NODE_24, // from IC A9, pin 8 + 0, 1, 1, 0, DISC_CLK_ON_F_EDGE) + DISCRETE_TRANSFORM3(NODE_26, NODE_23, 2, NODE_25, "01*2+") // Mix QA and QB-D together + DISCRETE_DAC_R1(FIRETRUCK_MOTORSND, NODE_26, + DEFAULT_TTL_V_LOGIC_1, + &firetrk_motor_out_dac) + + /************************************************/ + /* Horn, this is taken from the 64V signal. */ + /* 64V = HSYNC/128 */ + /* = 15750/128 */ + /************************************************/ + DISCRETE_SQUAREWFIX(NODE_30, FIRETRUCK_ATTRACT_INV, FIRETRUCK_64V, DEFAULT_TTL_V_LOGIC_1, 50.0, DEFAULT_TTL_V_LOGIC_1/2, 0) + DISCRETE_ONOFF(FIRETRUCK_HORNSND, FIRETRUCK_HORN_EN, NODE_30) + + /************************************************/ + /* Siren is built around a 556 based VCO, the */ + /* 4 bit input value is smoothed between trans- */ + /* itions by a 10u capacitor. */ + /* 0000 = 666Hz with 35% duty cycle */ + /* 1111 = 526Hz with 63% duty cycle */ + /************************************************/ + DISCRETE_DAC_R1(NODE_40, // IC E9, pin 7 + FIRETRUCK_SIREN_DATA, // IC F8, pins 15,16,12,19 + DEFAULT_TTL_V_LOGIC_1, + &firetrk_siren_cv_dac) + DISCRETE_555_ASTABLE_CV(FIRETRUCK_SIRENSND, FIRETRUCK_ATTRACT_INV, + RES_K(2.2), // R60 + RES_K(10), // R59 + CAP_U(0.1), // C37 + NODE_40, // CV is straight from DAC because op-amp E9 is just x1 buffer + &firetrk_siren_555) + + /************************************************/ + /* Crash circuit is built around a noise */ + /* generator built from 2 shift registers that */ + /* are clocked by the 2V signal. */ + /* 2V = HSYNC/4 */ + /* = 15750/4 */ + /* Output is binary weighted with 4 bits of */ + /* crash volume. */ + /************************************************/ + DISCRETE_LFSR_NOISE(FIRETRUCK_NOISE, FIRETRUCK_ATTRACT_INV, FIRETRUCK_ATTRACT_INV, FIRETRUCK_2V, 1.0, 0, 0.5, &firetrk_lfsr) + + DISCRETE_SWITCH(NODE_50, 1, FIRETRUCK_NOISE, 0, // Enable gate K9 + FIRETRUCK_CRASH_DATA) // IC K9, pins 3,6,11,8 + DISCRETE_DAC_R1(FIRETRUCK_BANGSND, // Bang + NODE_50, // from enable gates K9 + DEFAULT_TTL_V_LOGIC_1, + &firetrk_bang_dac) + + /************************************************/ + /* Screech is just the noise modulating a */ + /* Schmitt VCO. */ + /************************************************/ + DISCRETE_SCHMITT_OSCILLATOR(FIRETRUCK_SCREECHSND, FIRETRUCK_SKID_EN, FIRETRUCK_NOISE, DEFAULT_TTL_V_LOGIC_1, &firetrk_screech_osc) + + /************************************************/ + /* Bell circuit - */ + /* The Hsync signal is put into a div 16 */ + /* counter. */ + /************************************************/ + DISCRETE_RCDISC2(NODE_70, FIRETRUCK_BELL_EN, + 4.4, 10, // Q3 instantally charges C42 + 0, RES_K(33), // discharges through R66 + CAP_U(10)) // C42 + DISCRETE_TRANSFORM2(NODE_71, NODE_70, + 5.0 * 680 / (RES_K(10) + 680), // vRef = 5V * R64 / (R65 + R64) + "01<") // Output is low until vIn drops below vRef + DISCRETE_COUNTER(NODE_72, 1, NODE_71, FIRETRUCK_HSYNC, 0, 15, 1, 0, DISC_CLK_IS_FREQ) // IC B10 + DISCRETE_TRANSFORM4(FIRETRUCK_BELLSND, NODE_72, + 8, // count 0-7 allow cap voltage to output. 8-15 ground output. + NODE_70, // scale logic to cap voltage + RES_K(47) / (RES_K(47) + RES_K(47) + RES_K(47)), // to drop voltage per divider R72 / (R70+R71+R72) + "01<2*3*") + + /************************************************/ + /* Extended play circuit is just the 8V signal */ + /* 8V = HSYNC/16 */ + /* = 15750/16 */ + /************************************************/ + DISCRETE_SQUAREWFIX(FIRETRUCK_XTNDPLYSND, FIRETRUCK_XTNDPLY_EN, FIRETRUCK_8V, DEFAULT_TTL_V_LOGIC_1, 50.0, DEFAULT_TTL_V_LOGIC_1, 0.0) + + /************************************************/ + /* Combine all 7 sound sources. */ + /************************************************/ + DISCRETE_MIXER7(NODE_90, 1, FIRETRUCK_XTNDPLYSND, FIRETRUCK_HORNSND, FIRETRUCK_BELLSND, FIRETRUCK_SCREECHSND, FIRETRUCK_BANGSND, FIRETRUCK_MOTORSND, FIRETRUCK_SIRENSND, &firetrk_mixer) + + DISCRETE_OUTPUT(NODE_90, 1) +DISCRETE_SOUND_END + + +/************************************************************************/ +/* superbug Sound System Analog emulation */ +/* Complete re-write Feb 2004, D. Renaud */ +/************************************************************************/ + +static const discrete_dac_r1_ladder superbug_motor_v_dac = +{ + 4, // size of ladder + {RES_M(2.2), RES_M(1), RES_K(470), RES_K(220), 0,0,0,0}, // R8, R9, R6, R7 + 4.4, // 5V - diode junction (0.6V) + RES_K(68), // R10 + 0, // no rGnd + CAP_U(10) // C20 +}; + +static const discrete_555_cc_desc superbug_motor_vco = +{ + DISC_555_OUT_DC | DISC_555_OUT_SQW, + 5, // B+ voltage of 555 + DEFAULT_555_VALUES, + 0.7 // Q1 junction voltage +}; + +static const discrete_dac_r1_ladder superbug_motor_out_dac = +{ + 4, // size of ladder + {RES_K(10), 0,0, RES_K(10)}, // R34, -, -, R32 + DEFAULT_TTL_V_LOGIC_1, + 0, // no rBias + 0, // no rGnd + CAP_U(0.1) // C26 +}; + +static const discrete_dac_r1_ladder superbug_bang_dac = +{ + 4, // size of ladder + {RES_K(8.2), RES_K(3.9), RES_K(2.2), RES_K(1), 0,0,0,0}, // R28, R28, R27, R26 + 0, // no vBias + 0, // no rBias + 0, // no rGnd + CAP_U(0.1) // C25 +}; + +static const discrete_schmitt_osc_desc superbug_screech_osc = +{ + RES_K(2.2), // R30 + 330, // R52 + CAP_U(2.2), // C27 + DEFAULT_7414_VALUES, + DISC_SCHMITT_OSC_IN_IS_LOGIC | DISC_SCHMITT_OSC_ENAB_IS_NOR +}; + +static const discrete_mixer_desc superbug_mixer = +{ + DISC_MIXER_IS_RESISTOR, + {RES_K(15), RES_K(10.5456), RES_K(33), RES_K(4.7)}, // R54, R55, R72||(R70+R71), R53, R56 + R37||R35||R36||R34, R58 + R73||R74, R52 + {0}, // No variable resistor nodes + {0}, // No caps + 0, // No rI + RES_K(5), // R63 + 0, // No Filter + CAP_U(0.1), // C35 + 0, // not used in resistor network + 33000 // final gain +}; + +/* Nodes - Inputs */ +#define SUPERBUG_ATTRACT_INV NODE_09 +/* Nodes - Sounds */ +#define SUPERBUG_NOISE NODE_10 +#define SUPERBUG_MOTORSND NODE_11 +#define SUPERBUG_BANGSND NODE_12 +#define SUPERBUG_SCREECHSND NODE_13 +#define SUPERBUG_ASRSND NODE_14 + +DISCRETE_SOUND_START(superbug) + /************************************************/ + /* Input register mapping for superbug */ + /************************************************/ + DISCRETE_INPUTX_DATA(SUPERBUG_SPEED_DATA, -1, 0x0f, 0) + DISCRETE_INPUTX_DATA(SUPERBUG_CRASH_DATA, -1, 0x0f, 0) + DISCRETE_INPUT_LOGIC(SUPERBUG_SKID_EN) + DISCRETE_INPUT_LOGIC(SUPERBUG_ATTRACT_EN) + DISCRETE_INPUT_LOGIC(SUPERBUG_ASR_EN) + + DISCRETE_LOGIC_INVERT(SUPERBUG_ATTRACT_INV, SUPERBUG_ATTRACT_EN) + + /************************************************/ + /* Motor sound circuit is based on a 556 VCO */ + /* with the input frequency set by the MotorSND */ + /* latch (4 bit). This freqency is then used to */ + /* drive a modulo 12 counter. */ + /************************************************/ + DISCRETE_ADJUSTMENT(NODE_20, + RES_K(260), // R12 + R62 @ max + RES_K(10), // R12 + R62 @ min + DISC_LOGADJ, "R62") + DISCRETE_DAC_R1(NODE_21, // base of Q1 + SUPERBUG_SPEED_DATA, // IC B5, pins 3, 14, 6, 11 + DEFAULT_TTL_V_LOGIC_1, + &superbug_motor_v_dac) + DISCRETE_555_CC(NODE_22, 1, // IC A6 pin 3, always enabled + NODE_21, // vIn + NODE_20, // current adjust + CAP_U(0.01), // C21 + RES_M(3.3), 0, 0, // R11, no rGnd, no rDis + &superbug_motor_vco) + DISCRETE_COUNTER_7492(NODE_23, 1, SUPERBUG_ATTRACT_EN, // IC A7, QB-QD + NODE_22, DISC_CLK_ON_F_EDGE) // from IC A6, pin 3 + DISCRETE_TRANSFORM2(NODE_24, NODE_23, 0x04, "01&") // IC A7, pin 8-QD + DISCRETE_TRANSFORM2(NODE_25, NODE_23, 0x01, "01&") // IC A7, pin 11-QB + DISCRETE_LOGIC_XOR(NODE_26, NODE_24, NODE_25) // Gate A9, pin 8 + DISCRETE_COUNTER(NODE_27, 1, SUPERBUG_ATTRACT_EN, // IC A7, pin 12-QA + NODE_26, // from IC A9, pin 8 + 0, 1, 1, 0, DISC_CLK_ON_F_EDGE) + DISCRETE_TRANSFORM3(NODE_28, NODE_23, 2, NODE_27, "01*2+") // Mix QA and QB-D together + DISCRETE_DAC_R1(SUPERBUG_MOTORSND, NODE_28, + DEFAULT_TTL_V_LOGIC_1, + &superbug_motor_out_dac) + + /************************************************/ + /* Crash circuit is built around a noise */ + /* generator built from 2 shift registers that */ + /* are clocked by the 2V signal. */ + /* 2V = HSYNC/4 */ + /* = 15750/4 */ + /* Output is binary weighted with 4 bits of */ + /* crash volume. */ + /************************************************/ + DISCRETE_LFSR_NOISE(SUPERBUG_NOISE, SUPERBUG_ATTRACT_INV, SUPERBUG_ATTRACT_INV, FIRETRUCK_2V, 1.0, 0, 0.5, &firetrk_lfsr) // Same as firetrk + + DISCRETE_SWITCH(NODE_40, 1, SUPERBUG_NOISE, 0, // Enable gate C8 + SUPERBUG_CRASH_DATA) // IC D8, pins 3,14,6,11 + DISCRETE_DAC_R1(SUPERBUG_BANGSND, // Bang + NODE_40, // from enable gates C8 + DEFAULT_TTL_V_LOGIC_1, + &superbug_bang_dac) + + /************************************************/ + /* Screech is just the noise modulating a */ + /* Schmitt VCO. */ + /************************************************/ + DISCRETE_SCHMITT_OSCILLATOR(SUPERBUG_SCREECHSND, SUPERBUG_SKID_EN, SUPERBUG_NOISE, DEFAULT_TTL_V_LOGIC_1, &superbug_screech_osc) + + /************************************************/ + /* ASR circuit is just the 8V signal */ + /* 8V = HSYNC/16 */ + /* = 15750/16 */ + /************************************************/ + DISCRETE_SQUAREWFIX(SUPERBUG_ASRSND, SUPERBUG_ASR_EN, FIRETRUCK_8V, DEFAULT_TTL_V_LOGIC_1, 50.0, DEFAULT_TTL_V_LOGIC_1/2, 0.0) + + /************************************************/ + /* Combine all 4 sound sources. */ + /************************************************/ + DISCRETE_MIXER4(NODE_90, 1, SUPERBUG_MOTORSND, SUPERBUG_BANGSND, SUPERBUG_SCREECHSND, SUPERBUG_ASRSND, &superbug_mixer) + DISCRETE_OUTPUT(NODE_90, 1) +DISCRETE_SOUND_END + + +/************************************************************************/ +/* montecar Sound System Analog emulation */ +/* Complete re-write Mar 2004, D. Renaud */ +/************************************************************************/ + +/* Both cars use same parts for v_dac, vco and out_dac */ +static const discrete_dac_r1_ladder montecar_motor_v_dac = +{ + 4, // size of ladder + {RES_M(2.2), RES_M(1), RES_K(470), RES_K(220), 0,0,0,0}, // R44, R43, R46, R45 + 4.4, // 5V - diode junction (0.6V) + RES_K(68), // R80 + 0, // no rGnd + CAP_U(4.7) // C77 +}; + +static const discrete_555_cc_desc montecar_motor_vco = +{ + DISC_555_OUT_DC | DISC_555_OUT_SQW, + 5, // B+ voltage of 555 + DEFAULT_555_VALUES, + 0.7 // Q1 junction voltage +}; + +static const discrete_dac_r1_ladder montecar_motor_out_dac = +{ + 4, // size of ladder + {RES_K(10), RES_K(10), 0, RES_K(10)}, // R31, R30, -, R29 + DEFAULT_TTL_V_LOGIC_1, + 0, // no rBias + 0, // no rGnd + CAP_U(0.1) // C53 +}; + +static const discrete_comp_adder_table montecar_drone_vol_res = +{ + DISC_COMP_P_RESISTOR, + 0, // no default + 4, // # of resistors + {RES_K(100.25), RES_K(47.25), RES_K(22.25), RES_K(10.25), 0,0,0,0} // R105, R104, R103, R102 (250 added to all for 4066 resistance) +}; + +static const discrete_dac_r1_ladder montecar_bang_dac = +{ + 4, // size of ladder + {RES_K(8.2), RES_K(3.9), RES_K(2.2), RES_K(1), 0,0,0,0}, // R39, R42, R41, R40 + 0, // no vBias + 0, // no rBias + 0, // no rGnd + 0 // no cSmoothing +}; + +static const discrete_op_amp_filt_info montecar_bang_filt = +{ + 1.0/(1.0/RES_K(8.2) + 1.0/RES_K(3.9) + 1.0/RES_K(2.2) + 1.0/RES_K(1)) + RES_K(3.3), // R39, R42, R41, R40, r82 + 0, + 680, // R83 + 0, + RES_K(330), // r84 + CAP_U(.1), // c79 + CAP_U(.1), // c78 + 0, + 5, 12, 0 +}; + +static const discrete_schmitt_osc_desc montecar_screech_osc = +{ + RES_K(2.2), // R54 + 330, // R53 + CAP_U(2.2), // C57 + DEFAULT_74LS14_VALUES, + DISC_SCHMITT_OSC_IN_IS_LOGIC | DISC_SCHMITT_OSC_ENAB_IS_NOR +}; + +static const discrete_mixer_desc montecar_mixer = +{ + DISC_MIXER_IS_OP_AMP, + {RES_K(15), RES_K(33), RES_K(10), RES_K(10), RES_K(13.3333)}, // R93, R97, R96, variable , R95 + R31||R30||R29 + {0,0,0,NODE_30,0}, // Only drone has variable node + {CAP_U(0.22), CAP_U(0.22), CAP_U(0.22), CAP_U(1), CAP_U(1)}, // C83, C84, C85, C88, C47 + RES_K(27), // R92 + RES_K(82), // R98 + 0, // No Filter + CAP_U(0.22), // C6 + 5, // vRef + 5000 // final gain +}; + +#define MONTECAR_ATTRACT_EN NODE_09 +/* Nodes - Sounds */ +#define MONTECAR_NOISE NODE_15 +#define MONTECAR_MOTORSND NODE_10 // MotorAud1 +#define MONTECAR_BEEPSND NODE_11 +#define MONTECAR_DRONE_MOTORSND NODE_12 // MotorAud2 +#define MONTECAR_BANGSND NODE_13 +#define MONTECAR_SCREECHSND NODE_14 + +DISCRETE_SOUND_START(montecar) + /************************************************/ + /* Input register mapping for montecar */ + /************************************************/ + DISCRETE_INPUT_DATA (MONTECAR_MOTOR_DATA) // Motor 1-4 + DISCRETE_INPUT_DATA (MONTECAR_DRONE_MOTOR_DATA) // Motor 5-8 + DISCRETE_INPUTX_DATA(MONTECAR_CRASH_DATA, -1, 0x0f, 0) + DISCRETE_INPUT_LOGIC(MONTECAR_SKID_EN ) + DISCRETE_INPUT_DATA (MONTECAR_DRONE_LOUD_DATA) + DISCRETE_INPUT_LOGIC(MONTECAR_ATTRACT_INV) + DISCRETE_INPUT_NOT (MONTECAR_BEEPER_EN) + + DISCRETE_LOGIC_INVERT(MONTECAR_ATTRACT_EN, MONTECAR_ATTRACT_INV) + + /************************************************/ + /* Motor sound circuit is based on a 556 VCO */ + /* with the input frequency set by the MotorSND */ + /* latch (4 bit). This freqency is then used to */ + /* driver a modulo 12 counter, with div6, 4 & 3 */ + /* summed as the output of the circuit. */ + /************************************************/ + DISCRETE_ADJUSTMENT(NODE_20, + RES_K(260), // R87 + R89 @ max + RES_K(10), // R87 + R89 @ min + DISC_LOGADJ, "R89") + DISCRETE_DAC_R1(NODE_21, // base of Q7 + MONTECAR_MOTOR_DATA, // IC H8, pins 5, 2, 9, 6 + DEFAULT_TTL_V_LOGIC_1, + &montecar_motor_v_dac) + DISCRETE_555_CC(NODE_22, 1, // IC C9 pin 9 + NODE_21, // vIn + NODE_20, // current adjust + CAP_U(0.01), // C81 + RES_M(1), 0, 0, // R86, no rGnd, no rDis + &montecar_motor_vco) + DISCRETE_COUNTER_7492(NODE_23, 1, MONTECAR_ATTRACT_EN, // IC B/C9, QB-QD + NODE_22, DISC_CLK_ON_F_EDGE) // from IC C9, pin 9 + DISCRETE_TRANSFORM2(NODE_24, NODE_23, 0x04, "01&") // IC B/C9, pin 8-QD + DISCRETE_TRANSFORM2(NODE_25, NODE_23, 0x01, "01&") // IC B/C9, pin 11-QB + DISCRETE_LOGIC_XOR(NODE_26, NODE_24, NODE_25) // Gate A9, pin 11 + DISCRETE_COUNTER(NODE_27, 1, MONTECAR_ATTRACT_EN, // IC B/C9, pin 12-QA + NODE_26, // from IC A9, pin 11 + 0, 1, 1, 0, DISC_CLK_ON_F_EDGE) + DISCRETE_TRANSFORM3(NODE_28, NODE_23, 2, NODE_27, "01*2+") // Mix QA and QB-D together + DISCRETE_DAC_R1(MONTECAR_MOTORSND, NODE_28, + DEFAULT_TTL_V_LOGIC_1, + &montecar_motor_out_dac) + + /************************************************/ + /* Drone motor sound is basically the same as */ + /* the regular car but with a volume control. */ + /* Also I shifted the frequencies up for it to */ + /* sound different from the player's car. */ + /************************************************/ + DISCRETE_COMP_ADDER(NODE_30, MONTECAR_DRONE_LOUD_DATA, &montecar_drone_vol_res) // make sure to change the node value in the mixer table if you change this node number + + DISCRETE_ADJUSTMENT(NODE_40, + RES_K(260), // R85 + R88 @ max + RES_K(10), // R85 + R88 @ min + DISC_LOGADJ, "R88") + DISCRETE_DAC_R1(NODE_41, // base of Q7 + MONTECAR_DRONE_MOTOR_DATA, // IC H8, pins 19, 16, 12, 15 + DEFAULT_TTL_V_LOGIC_1, + &montecar_motor_v_dac) + DISCRETE_555_CC(NODE_42, 1, // IC C9 pin 5 + NODE_41, // vIn + NODE_40, // current adjust + CAP_U(0.01), // C80 + RES_M(1), 0, 0, // R81, no rGnd, no rDis + &montecar_motor_vco) + DISCRETE_COUNTER_7492(NODE_43, 1, MONTECAR_ATTRACT_EN, // IC A/B9, QB-QD + NODE_42, DISC_CLK_ON_F_EDGE) // from IC C9, pin 5 + DISCRETE_TRANSFORM2(NODE_44, NODE_43, 0x04, "01&") // IC A/B9, pin 8-QD + DISCRETE_TRANSFORM2(NODE_45, NODE_43, 0x01, "01&") // IC A/B9, pin 11-QB + DISCRETE_LOGIC_XOR(NODE_46, NODE_44, NODE_45) // Gate A9, pin 6 + DISCRETE_COUNTER(NODE_47, 1, MONTECAR_ATTRACT_EN, // IC A/B9, pin 12-QA + NODE_46, // from IC A9, pin 6 + 0, 1, 1, 0, DISC_CLK_ON_F_EDGE) + DISCRETE_TRANSFORM3(NODE_48, NODE_43, 2, NODE_47, "01*2+") // Mix QA and QB-D together + DISCRETE_DAC_R1(MONTECAR_DRONE_MOTORSND, NODE_48, + DEFAULT_TTL_V_LOGIC_1, + &montecar_motor_out_dac) + + /************************************************/ + /* Crash circuit is built around a noise */ + /* generator built from 2 shift registers that */ + /* are clocked by the 2V signal. */ + /* 2V = HSYNC/4 */ + /* = 15750/4 */ + /* Output is binary weighted with 4 bits of */ + /* crash volume. */ + /************************************************/ + DISCRETE_LFSR_NOISE(MONTECAR_NOISE, MONTECAR_ATTRACT_INV, MONTECAR_ATTRACT_INV,FIRETRUCK_2V , 1.0, 0, 0.5, &firetrk_lfsr) // Same as firetrk + + DISCRETE_SWITCH(NODE_50, 1, MONTECAR_NOISE, 0, // Enable gate A9 + MONTECAR_CRASH_DATA) // IC J8, pins 3,6,11,14 + DISCRETE_DAC_R1(NODE_51, // Bang + NODE_50, // from enable gates A9 + DEFAULT_TTL_V_LOGIC_1, + &montecar_bang_dac) + DISCRETE_OP_AMP_FILTER(MONTECAR_BANGSND, 1, NODE_51, 0, DISC_OP_AMP_FILTER_IS_BAND_PASS_1M, &montecar_bang_filt) + + /************************************************/ + /* Screech is just the noise modulating a */ + /* Schmitt VCO. */ + /************************************************/ + DISCRETE_SCHMITT_OSCILLATOR(NODE_60, MONTECAR_SKID_EN, MONTECAR_NOISE, DEFAULT_TTL_V_LOGIC_1, &montecar_screech_osc) + DISCRETE_SWITCH(MONTECAR_SCREECHSND, 1, MONTECAR_ATTRACT_INV, 0, NODE_60) + + /************************************************/ + /* Beep circuit is just the 8V signal */ + /* 8V = HSYNC/16 */ + /* = 15750/16 */ + /************************************************/ + DISCRETE_SQUAREWFIX(MONTECAR_BEEPSND, MONTECAR_BEEPER_EN, FIRETRUCK_8V, DEFAULT_TTL_V_LOGIC_1, 50.0, DEFAULT_TTL_V_LOGIC_1/2, 0.0) + + /************************************************/ + /* Combine all 5 sound sources. */ + /************************************************/ + DISCRETE_MIXER5(NODE_90, 1, MONTECAR_BEEPSND, MONTECAR_SCREECHSND, MONTECAR_BANGSND, MONTECAR_DRONE_MOTORSND, MONTECAR_MOTORSND, &montecar_mixer) + DISCRETE_OUTPUT(NODE_90, 1) +DISCRETE_SOUND_END |