[wrap]
/*************************************************************************
audio\firetrk.c
*************************************************************************/
#include "driver.h"
#include "firetrk.h"
#include "sound/discrete.h"
WRITE8_HANDLER( firetrk_skid_reset_w )
{
firetrk_skid[0] = 0;
firetrk_skid[1] = 0;
// also SUPERBUG_SKID_EN
discrete_sound_w(space, FIRETRUCK_SKID_EN, 1);
}
WRITE8_HANDLER( montecar_skid_reset_w )
{
discrete_sound_w(space, MONTECAR_SKID_EN, 1);
}
WRITE8_HANDLER( firetrk_crash_snd_w )
{
// also SUPERBUG_CRASH_DATA and MONTECAR_CRASH_DATA
discrete_sound_w(space, FIRETRUCK_CRASH_DATA, data >> 4);
}
WRITE8_HANDLER( firetrk_skid_snd_w )
{
// also SUPERBUG_SKID_EN and MONTECAR_SKID_EN
discrete_sound_w(space, FIRETRUCK_SKID_EN, 0);
}
WRITE8_HANDLER( firetrk_motor_snd_w )
{
// also MONTECAR_DRONE_MOTOR_DATA
discrete_sound_w(space, FIRETRUCK_SIREN_DATA, data >> 4);
// also MONTECAR_MOTOR_DATA
discrete_sound_w(space, FIRETRUCK_MOTOR_DATA, data & 0x0f);
}
WRITE8_HANDLER( superbug_motor_snd_w )
{
discrete_sound_w(space, SUPERBUG_SPEED_DATA, data & 0x0f);
}
WRITE8_HANDLER( firetrk_xtndply_w )
{
discrete_sound_w(space, FIRETRUCK_XTNDPLY_EN, data);
}
WRITE8_HANDLER( superbug_asr_w )
{
popmessage("ASR");
discrete_sound_w(space, SUPERBUG_ASR_EN, 1); /* ASR */
}
#define FIRETRUCK_HSYNC 15750.0
#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@dysfunction.demon.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, 1, 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_TAG(NODE_20,
RES_K(260), // R26 + R27 @ max
RES_K(10), // R26 + R27 @ min
DISC_LOGADJ, "R27")
DISCRETE_DAC_R1(NODE_21, 1, // 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
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, 1, 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, 1, // 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, 1, // 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 thru 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, 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, 1, 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_TAG(NODE_20,
RES_K(260), // R12 + R62 @ max
RES_K(10), // R12 + R62 @ min
DISC_LOGADJ, "R62")
DISCRETE_DAC_R1(NODE_21, 1, // 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, 1, 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
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, 1, 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, 1, // 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, 1, 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_TAG(NODE_20,
RES_K(260), // R87 + R89 @ max
RES_K(10), // R87 + R89 @ min
DISC_LOGADJ, "R89")
DISCRETE_DAC_R1(NODE_21, 1, // 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, 1, 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
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, 1, 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_TAG(NODE_40,
RES_K(260), // R85 + R88 @ max
RES_K(10), // R85 + R88 @ min
DISC_LOGADJ, "R88")
DISCRETE_DAC_R1(NODE_41, 1, // 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, 1, 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
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, 1, 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, 1, // 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
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