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|
// license:BSD-3-Clause
// copyright-holders:Derrick Renaud
/************************************************************************
* copsnrob Sound System Analog emulation
* Nov 2010, Derrick Renaud
************************************************************************/
#include "emu.h"
#include "includes/copsnrob.h"
#include "sound/discrete.h"
#include "speaker.h"
/* Discrete Sound Input Nodes */
#define COPSNROB_MOTOR0_INV NODE_01
#define COPSNROB_MOTOR1_INV NODE_02
#define COPSNROB_MOTOR2_INV NODE_03
#define COPSNROB_MOTOR3_INV NODE_04
#define COPSNROB_ZINGS_INV NODE_05
#define COPSNROB_FIRES_INV NODE_06
#define COPSNROB_CRASH_INV NODE_07
#define COPSNROB_SCREECH_INV NODE_08
#define COPSNROB_AUDIO_ENABLE NODE_09
/* Discrete Sound Output Nodes */
#define COPSNROB_MOTOR0_SND NODE_11
#define COPSNROB_MOTOR1_SND NODE_12
#define COPSNROB_MOTOR2_SND NODE_13
#define COPSNROB_MOTOR3_SND NODE_14
#define COPSNROB_FZ_SND NODE_15
#define COPSNROB_CRASH_SND NODE_16
#define COPSNROB_SCREECH_SND NODE_17
#define COPSNROB_NOISE_1 NODE_18
#define COPSNROB_NOISE_2 NODE_18_01
/* Parts List - Resistors */
#define COPSNROB_R16 RES_K(10)
#define COPSNROB_R18 RES_K(100)
#define COPSNROB_R19 RES_K(100)
#define COPSNROB_R20 RES_K(100)
#define COPSNROB_R21 RES_K(47)
#define COPSNROB_R25 RES_K(47)
#define COPSNROB_R26 RES_K(150)
#define COPSNROB_R27 RES_K(22)
#define COPSNROB_R28 RES_K(18)
#define COPSNROB_R33 RES_K(10)
#define COPSNROB_R35 RES_K(10)
#define COPSNROB_R36 RES_K(15)
#define COPSNROB_R37 RES_K(4.7)
#define COPSNROB_R38 RES_K(15)
#define COPSNROB_R39 RES_K(10)
#define COPSNROB_R41 RES_K(33)
#define COPSNROB_R42 RES_K(33)
#define COPSNROB_R47 RES_K(10)
#define COPSNROB_R48 RES_K(1)
#define COPSNROB_R49 RES_K(47)
#define COPSNROB_R50 RES_K(47)
#define COPSNROB_R53 RES_K(47)
#define COPSNROB_R54 RES_K(22)
#define COPSNROB_R55 RES_K(47)
#define COPSNROB_R56 RES_K(470)
#define COPSNROB_R57 RES_K(820)
#define COPSNROB_R58 RES_K(68)
#define COPSNROB_R59 RES_K(1)
#define COPSNROB_R64 RES_K(47)
#define COPSNROB_R65 RES_K(4.7)
#define COPSNROB_R66 RES_K(1.5)
#define COPSNROB_R69 RES_K(330)
#define COPSNROB_R70 RES_K(330)
#define COPSNROB_R71 RES_K(100)
#define COPSNROB_R72 RES_K(100)
#define COPSNROB_R73 RES_K(47)
#define COPSNROB_R74 RES_K(1)
#define COPSNROB_R75 RES_K(1)
#define COPSNROB_R76 RES_K(12)
#define COPSNROB_R77 RES_K(33)
#define COPSNROB_R78 RES_K(100)
#define COPSNROB_R79 RES_K(2.2)
#define COPSNROB_R80 RES_K(1)
#define COPSNROB_R81 RES_K(8.2)
#define COPSNROB_R82 RES_K(3.9)
#define COPSNROB_R83 RES_K(27)
#define COPSNROB_R84 RES_K(15)
#define COPSNROB_R85 (330)
#define COPSNROB_R86 RES_K(330)
#define COPSNROB_R87 (820)
#define COPSNROB_R88 RES_K(1)
#define COPSNROB_R89 RES_K(1)
#define COPSNROB_R92 RES_K(100)
#define COPSNROB_R93 RES_K(100)
#define COPSNROB_R94 RES_K(10)
/* Parts List - Capacitors */
#define COPSNROB_C3 CAP_U(100)
#define COPSNROB_C12 CAP_U(0.1)
#define COPSNROB_C13 CAP_U(0.1)
#define COPSNROB_C17 CAP_U(0.001)
#define COPSNROB_C19 CAP_U(10)
#define COPSNROB_C20 CAP_U(0.01)
#define COPSNROB_C23 CAP_U(0.1)
#define COPSNROB_C24 CAP_U(0.22)
#define COPSNROB_C28 CAP_U(1)
#define COPSNROB_C30 CAP_U(0.01)
#define COPSNROB_C31 CAP_U(0.1)
#define COPSNROB_C32 CAP_U(5)
#define COPSNROB_C33 CAP_U(10)
#define COPSNROB_C36 CAP_U(100)
#define COPSNROB_C39 CAP_U(0.1)
#define COPSNROB_C37 CAP_U(0.1)
#define COPSNROB_C40 CAP_U(0.1)
#define COPSNROB_C41 CAP_U(0.03)
#define COPSNROB_C42 CAP_U(0.047)
#define COPSNROB_C43 CAP_U(0.047)
#define COPSNROB_C55 CAP_U(0.1)
#define COPSNROB_C58 CAP_U(0.1)
#define COPSNROB_C59 CAP_U(0.1)
/* Timing values */
#define COPSNROB_2V (15750/2/2) /* has to be verified */
static const discrete_555_desc copsnrob_motor23_555_1 =
{
DISC_555_OUT_SQW,
5, DEFAULT_555_VALUES
};
static const discrete_555_desc copsnrob_motor23_555_2 =
{
DISC_555_OUT_ENERGY | DISC_555_TRIGGER_IS_VOLTAGE,
5, DEFAULT_555_VALUES
};
static const discrete_op_amp_filt_info copsnrob_motor23_filter =
{
COPSNROB_R28, 0, COPSNROB_R87, 0, COPSNROB_R86, /* r1, r2, r3, r4, rF */
COPSNROB_C42, COPSNROB_C43, 0, /* c1, c2, c3 */
5.0 * RES_VOLTAGE_DIVIDER(COPSNROB_R88, COPSNROB_R89), 5, 0 /* vRef, vP, vN */
};
static const discrete_dac_r1_ladder copsnrob_crash_dac =
{
4, /* ladderLength */
{COPSNROB_R81, COPSNROB_R82, COPSNROB_R79, COPSNROB_R80},
0, 0, 0, COPSNROB_C58 /* vBias, rBias, rGnd, cFilter */
};
static const discrete_mixer_desc copsnrob_final_mixer01 =
{
DISC_MIXER_IS_RESISTOR,
{COPSNROB_R21, COPSNROB_R25, COPSNROB_R33, COPSNROB_R70, COPSNROB_R71},
{0}, {0}, 0, COPSNROB_R35, 0, COPSNROB_C59, /* r_node{}, c{}, rI, rF, cF, cAmp */
0, 1 /* vRef, gain */
};
static const discrete_dac_r1_ladder copsnrob_motor01_cc_dac =
{
1, /* ladderLength */
{COPSNROB_R56},
5.0 - 0.5, COPSNROB_R58, COPSNROB_R57, COPSNROB_C33 /* vBias; rBias; rGnd; cFilter */
};
static const discrete_dac_r1_ladder copsnrob_motor01_out_dac =
{
4, /* ladderLength */
{COPSNROB_R20, COPSNROB_R18, 0, COPSNROB_R19},
0, 0, 0, COPSNROB_C12 /* vBias; rBias; rGnd; cFilter */
};
static const discrete_mixer_desc copsnrob_final_mixer23 =
{
DISC_MIXER_IS_RESISTOR,
{COPSNROB_R93, COPSNROB_R92, COPSNROB_R72, COPSNROB_R69, COPSNROB_R16},
{0}, {0}, 0, COPSNROB_R94, 0, COPSNROB_C55, /* r_node{}, c{}, rI, rF, cF, cAmp */
0, 1 /* vRef, gain */
};
static const discrete_dac_r1_ladder copsnrob_motor23_cv_dac =
{
1, /* ladderLength */
{COPSNROB_R65},
5, RES_K(5), RES_K(10), COPSNROB_C36 /* vBias; rBias; rGnd; cFilter */
};
static const discrete_555_cc_desc copsnrob_motor01_555cc =
{
DISC_555_OUT_COUNT_R | DISCRETE_555_CC_TO_DISCHARGE_PIN,
5, /* v_pos */
DEFAULT_555_CC_SOURCE,
1, /* v_out_high - ignored */
0.6 /* v_cc_junction */
};
#define COPSNROB_MOTOR01_BASE_NODE NODE_20
#define COPSNROB_MOTOR23_BASE_NODE NODE_30
#define COPSNROB_NODE(_base, _num, _offset) NODE_RELATIVE(_base, _num * 100 + _offset)
#define COPSNROB_MOTOR01_NODE(_num, _offset) COPSNROB_NODE(COPSNROB_MOTOR01_BASE_NODE, _num, _offset)
#define COPSNROB_MOTOR23_NODE(_num, _offset) COPSNROB_NODE(COPSNROB_MOTOR23_BASE_NODE, _num, _offset)
/************************************************
* MOTOR0/1 Definition Start
************************************************/
#define COPSNROB_MOTOR01(_output, _input, _num) \
/* simulate the RC connected to the transistor with a DAC */ \
DISCRETE_DAC_R1(COPSNROB_MOTOR01_NODE(_num, 0), \
_input, 4.2, &copsnrob_motor01_cc_dac) /* DATA; VDATA - TTL with light load */ \
DISCRETE_555_CC(COPSNROB_MOTOR01_NODE(_num, 1), /* IC F2, pin 10 from IC F3, pin 9 */ \
1, /* RESET - IC F3, pin 10 */ \
COPSNROB_MOTOR01_NODE(_num, 0), /* VIN */ \
COPSNROB_R53, COPSNROB_C20, 0, 0, COPSNROB_R39, /* R; C; RBIAS; RGND; RDIS */ \
&copsnrob_motor01_555cc) \
/* IC D2, pin 12 and IC E3, pin 5 make a /4 counter */ \
DISCRETE_COUNTER(COPSNROB_MOTOR01_NODE(_num, 2), /* IC E3, pin 5 */ \
1, 0, /* ENAB; RESET */ \
COPSNROB_MOTOR01_NODE(_num, 1), /* IC D2, pin 1 */ \
0, 3, DISC_COUNT_UP, 0, DISC_CLK_BY_COUNT) /* MIN; MAX; DIR; INIT0; CLKTYPE */ \
DISCRETE_COUNTER_7492(COPSNROB_MOTOR01_NODE(_num, 3), /* IC E3, pins 11, 9, & 8 */\
1, 0, /* ENAB; RESET */ \
COPSNROB_MOTOR01_NODE(_num, 1), /* IC E3, pin 14 */ \
DISC_CLK_BY_COUNT) /* CLKTYPE */ \
DISCRETE_TRANSFORM3(COPSNROB_MOTOR01_NODE(_num, 4), \
COPSNROB_MOTOR01_NODE(_num, 2), /* INP0 */ \
COPSNROB_MOTOR01_NODE(_num, 3), 2, /* INP1, INP2 */ \
"02&2/12*+") /* get bits ready for DAC */\
DISCRETE_DAC_R1(_output, \
COPSNROB_MOTOR01_NODE(_num, 4), 4.2, &copsnrob_motor01_out_dac) /* DATA; VDATA - TTL with light load */
/************************************************
* MOTOR0/1 Definition Start
************************************************/
/************************************************
* MOTOR2/3 Definition Start
************************************************/
#define COPSNROB_MOTOR23(_output, _input, _num) \
/* simulate the RC connected to the 555 CV pin with a DAC */ \
DISCRETE_DAC_R1(COPSNROB_MOTOR23_NODE(_num, 0), \
_input, 4.2, &copsnrob_motor23_cv_dac) /* DATA; VDATA - TTL with light load */ \
DISCRETE_555_ASTABLE_CV(COPSNROB_MOTOR23_NODE(_num, 1), /* IC J2, pin 5 */ \
1, /* RESET */ \
COPSNROB_R64, COPSNROB_R42, COPSNROB_C24, \
COPSNROB_MOTOR23_NODE(_num, 0), /* CTRLV - IC J2, pin 3 */ \
&copsnrob_motor23_555_1) \
DISCRETE_CRFILTER_VREF(COPSNROB_MOTOR23_NODE(_num, 2), \
COPSNROB_MOTOR23_NODE(_num, 1), /* IN0 */ \
RES_3_PARALLEL(COPSNROB_R27, RES_K(10), RES_K(5)), COPSNROB_C17, /* R is in parallel with 555 internal R */ \
5.0 * RES_VOLTAGE_DIVIDER(RES_2_PARALLEL(COPSNROB_R27, RES_K(10)), RES_K(5))) /* VREF */ \
DISCRETE_555_MSTABLE(COPSNROB_MOTOR23_NODE(_num, 3), /* IC J3, pin 9 */ \
1, /* RESET */ \
COPSNROB_MOTOR23_NODE(_num, 2), /* IC J3, pin 8 */ \
COPSNROB_R41, COPSNROB_C23, \
&copsnrob_motor23_555_2) \
DISCRETE_OP_AMP_FILTER(_output, /* IC L4, pin 7 */ \
1, /* ENAB */ \
COPSNROB_MOTOR23_NODE(_num, 3), 0, /* INP0; INP1 */ \
DISC_OP_AMP_FILTER_IS_BAND_PASS_1M, &copsnrob_motor23_filter)
/************************************************
* MOTOR2/3 Definition End
************************************************/
/************************************************
* CUSTOM_NOISE Definition Start
* - output is energy
************************************************/
#define COPSNROB_CUSTOM_NOISE__FREQ DISCRETE_INPUT(0)
DISCRETE_CLASS_STEP_RESET(copsnrob_custom_noise, 2,
int m_flip_flop;
int m_noise1_had_xtime;
int m_noise2_had_xtime;
uint8_t m_high_byte;
uint8_t m_low_byte;
double m_t_used;
double m_t1;
);
#define COPSNROB_CUSTOM_NOISE_HIGH 4.2
DISCRETE_STEP(copsnrob_custom_noise)
{
double t_used = m_t_used;
double t1 = m_t1;
double x_time = 0;
uint8_t low_byte = m_low_byte;
uint8_t high_byte = m_high_byte;
uint8_t xnor_out; /* IC F2, pin 2 */
int last_noise1_bit = (low_byte >> 4) & 0x01;
int last_noise2_bit = (low_byte >> 5) & 0x01;
t_used += this->sample_time();
/* This clock will never run faster then the sample rate,
* so we do not bother to check.
*/
if (t_used > t1)
{
/* calculate the overshoot time */
t_used -= t1;
m_flip_flop ^= 1;
/* clocks on low to high */
if (m_flip_flop)
{
int new_noise_bit;
/* shift */
xnor_out = (((low_byte >> 6) & 0x01) ^ (high_byte & 0x01)) ^ 0x01;
low_byte = (low_byte << 1) | ((high_byte >> 7) & 0x01);
high_byte = (high_byte << 1) | xnor_out;
if (high_byte == 0xff) /* IC H1, pin 8 */
high_byte = 0;
m_low_byte = low_byte;
m_high_byte = high_byte;
/* Convert last switch time to a ratio */
x_time = t_used / this->sample_time();
/* use x_time if bit changed */
new_noise_bit = (low_byte >> 4) & 0x01;
if (last_noise1_bit != new_noise_bit)
{
set_output(0, COPSNROB_CUSTOM_NOISE_HIGH * (new_noise_bit ? x_time : (1.0 - x_time)));
m_noise1_had_xtime = 1;
}
new_noise_bit = (low_byte >> 5) & 0x01;
if (last_noise2_bit != new_noise_bit)
{
set_output(1, COPSNROB_CUSTOM_NOISE_HIGH * (new_noise_bit ? x_time : (1.0 - x_time)));
m_noise2_had_xtime = 1;
}
}
}
else
{
/* see if we need to move from x_time state to full state */
if (m_noise1_had_xtime)
{
set_output(0, COPSNROB_CUSTOM_NOISE_HIGH * last_noise1_bit);
m_noise1_had_xtime = 0;
}
if (m_noise2_had_xtime)
{
set_output(1, COPSNROB_CUSTOM_NOISE_HIGH * last_noise2_bit);
m_noise2_had_xtime = 0;
}
}
m_t_used = t_used;
}
DISCRETE_RESET(copsnrob_custom_noise)
{
m_t1 = 0.5 / COPSNROB_CUSTOM_NOISE__FREQ ;
m_flip_flop = 0;
m_low_byte = 0;
m_high_byte = 0;
m_noise1_had_xtime = 0;
m_noise2_had_xtime = 0;
m_t_used = 0;
}
/************************************************
* CUSTOM_NOISE Definition End
************************************************/
/************************************************
* CUSTOM_ZINGS_555_MONOSTABLE Definition Start
* - output is energy
************************************************/
#define COPSNROB_CUSTOM_ZINGS_555_MONOSTABLE__TRIG DISCRETE_INPUT(0)
#define COPSNROB_CUSTOM_ZINGS_555_MONOSTABLE__R DISCRETE_INPUT(1)
#define COPSNROB_CUSTOM_ZINGS_555_MONOSTABLE__C DISCRETE_INPUT(2)
DISCRETE_CLASS_STEP_RESET(copsnrob_zings_555_monostable, 1,
double m_rc;
double m_exponent;
double m_v_cap;
int m_flip_flop;
);
DISCRETE_STEP(copsnrob_zings_555_monostable)
{
const double v_threshold = 5.0 * 2 / 3;
const double v_out_high = 5.0 - 0.5; /* light load */
int ff_set = COPSNROB_CUSTOM_ZINGS_555_MONOSTABLE__TRIG < (5.0 / 3) ? 1 : 0;
int flip_flop = m_flip_flop;
double v_cap = m_v_cap;
double x_time = 0;
/* From testing a real IC */
/* Trigger going low overides everything. It forces the FF/Output high.
* If Threshold is high, the output will still go high as long as trigger is low.
* The output will then go low when trigger rises above it's 1/3VCC value.
* If threshold is below it's 2/3VCC value, the output will remain high.
*/
if (ff_set)
{
flip_flop = 1;
m_flip_flop = flip_flop;
}
if (flip_flop)
{
double v_diff = v_out_high - v_cap;
/* charge */
v_cap += v_diff * m_exponent;
/* no state change if trigger is low */
if (!ff_set && (v_cap > v_threshold))
{
double rc = m_rc;
flip_flop = 0;
m_flip_flop = flip_flop;
/* calculate overshoot */
x_time = rc * log(1.0 / (1.0 - ((v_cap - v_threshold) / v_diff)));
/* discharge the overshoot */
v_cap = v_threshold;
v_cap -= v_cap * RC_CHARGE_EXP_DT(rc, x_time);
x_time /= this->sample_time();
}
}
else
{
/* Optimization - already discharged */
if (v_cap == 0)
return;
/* discharge */
v_cap -= v_cap * m_exponent;
/* Optimization - close enough to 0 to be 0 */
if (v_cap < 0.000001)
v_cap = 0;
}
m_v_cap = v_cap;
if (x_time > 0)
set_output(0, v_out_high * x_time);
else if (flip_flop)
set_output(0, v_out_high);
else
set_output(0, 0.0);
}
DISCRETE_RESET(copsnrob_zings_555_monostable)
{
m_rc = COPSNROB_CUSTOM_ZINGS_555_MONOSTABLE__R * COPSNROB_CUSTOM_ZINGS_555_MONOSTABLE__C;
m_exponent = RC_CHARGE_EXP(m_rc);
m_v_cap = 0;
m_flip_flop = 0;
set_output(0, 0.0);
}
/************************************************
* CUSTOM_ZINGS_555_MONOSTABLE Definition End
************************************************/
/************************************************
* CUSTOM_ZINGS_555_ASTABLE Definition Start
* - output is energy
************************************************/
#define COPSNROB_CUSTOM_ZINGS_555_ASTABLE__RESET DISCRETE_INPUT(0)
#define COPSNROB_CUSTOM_ZINGS_555_ASTABLE__R1 DISCRETE_INPUT(1)
#define COPSNROB_CUSTOM_ZINGS_555_ASTABLE__R2 DISCRETE_INPUT(2)
#define COPSNROB_CUSTOM_ZINGS_555_ASTABLE__C1 DISCRETE_INPUT(3)
#define COPSNROB_CUSTOM_ZINGS_555_ASTABLE__C2 DISCRETE_INPUT(4)
#define COPSNROB_CUSTOM_ZINGS_555_ASTABLE__HIGH 4.5
DISCRETE_CLASS_STEP_RESET(copsnrob_zings_555_astable, 1,
double m_r2c2;
double m_r_total_cv;
double m_exponent1;
double m_exponent2;
double m_v_cap1;
double m_v_cap2;
int m_flip_flop;
);
DISCRETE_STEP(copsnrob_zings_555_astable)
{
double v_trigger, v_threshold;
double v1 = COPSNROB_CUSTOM_ZINGS_555_ASTABLE__RESET;
double v_cap1 = m_v_cap1;
double v_cap2 = m_v_cap2;
double dt = 0;
int reset_active = (v1 < 0.7) ? 1 : 0;
int flip_flop = m_flip_flop;
/* calculate voltage at CV pin */
/* start by adding currents */
double v_cv = 5.0 / RES_K(5);
v_cv += v1 / COPSNROB_CUSTOM_ZINGS_555_ASTABLE__R1;
/* convert to voltage */
v_cv *= m_r_total_cv;
/* The reset voltage also charges the CV cap */
double v_diff1 = v_cv - v_cap1;
/* optimization - if charged close enough to voltage */
if (fabs(v_diff1) < 0.000001)
v_cap1 = v_cv;
else
v_cap1 += v_diff1 * m_exponent1;
m_v_cap1 = v_cap1;
if (reset_active)
{
if (flip_flop)
m_flip_flop = 0;
/* we still need to discharge C2 */
/* Optimization - only discharge if needed */
if (v_cap2 != 0)
{
/* discharge */
v_cap2 -= v_cap2 * m_exponent2;
/* Optimization - close enough to 0 to be 0 */
if (v_cap2 < 0.000001)
set_output(0, 0.0);
else
set_output(0, v_cap2);
}
return;
}
v_threshold = v_cap1 * 2 / 3;
v_trigger = v_cap1 / 3;
/* This oscillator will never create a frequency greater then 1/2 the sample rate,
* so we won't worry about missing samples */
/* No need to optimize the charge circuit. It always charges/discharges to a voltage
* greater then it will ever reach. */
if (flip_flop)
{
/* charge */
double v_diff2 = COPSNROB_CUSTOM_ZINGS_555_ASTABLE__HIGH - v_cap2;
v_cap2 += v_diff2 * m_exponent2;
if (v_cap2 > v_threshold)
{
double r2c2 = m_r2c2;
m_flip_flop = 0;
/* calculate overshoot */
dt = r2c2 * log(1.0 / (1.0 - ((v_cap2 - v_threshold) / v_diff2)));
/* discharge the overshoot */
v_cap2 = v_threshold;
v_cap2 -= v_cap2 * RC_CHARGE_EXP_DT(r2c2, dt);
}
}
else
{
/* discharge */
double v_diff2 = v_cap2;
v_cap2 -= v_diff2 * m_exponent2;
if (v_cap2 < v_trigger)
{
double r2c2 = m_r2c2;
m_flip_flop = 1;
/* calculate overshoot */
dt = r2c2 * log(1.0 / (1.0 - ((v_trigger - v_cap2) / v_diff2)));
/* charge the overshoot */
v_cap2 = v_trigger;
v_cap2 += (COPSNROB_CUSTOM_ZINGS_555_ASTABLE__HIGH - v_cap2) * RC_CHARGE_EXP_DT(r2c2, dt);
}
}
if (v_cap2 > 0)
m_v_cap2 = v_cap2;
else
m_v_cap2 = 0.0;
set_output(0, m_v_cap2);
}
DISCRETE_RESET(copsnrob_zings_555_astable)
{
m_r_total_cv = RES_3_PARALLEL(COPSNROB_CUSTOM_ZINGS_555_ASTABLE__R1, RES_K(10), RES_K(5));
m_r2c2 = COPSNROB_CUSTOM_ZINGS_555_ASTABLE__R2 * COPSNROB_CUSTOM_ZINGS_555_ASTABLE__C2;
m_exponent1 = RC_CHARGE_EXP(COPSNROB_CUSTOM_ZINGS_555_ASTABLE__R1 * COPSNROB_CUSTOM_ZINGS_555_ASTABLE__C1);
m_exponent2 = RC_CHARGE_EXP(m_r2c2);
m_v_cap1 = 0;
m_flip_flop = 0;
m_v_cap2 = 0.0; /* charge on C2 */
}
/************************************************
* CUSTOM_ZINGS_555_ASTABLE Definition End
************************************************/
static DISCRETE_SOUND_START(copsnrob_discrete)
/************************************************
* Input register mapping
************************************************/
DISCRETE_INPUT_LOGIC(COPSNROB_MOTOR0_INV)
DISCRETE_INPUT_LOGIC(COPSNROB_MOTOR1_INV)
DISCRETE_INPUT_LOGIC(COPSNROB_MOTOR2_INV)
DISCRETE_INPUT_LOGIC(COPSNROB_MOTOR3_INV)
/* !! DISABLED UNTIL ADDRESS IS FOUND !! */
// DISCRETE_INPUTX_LOGIC(COPSNROB_ZINGS_INV, 4, 0, 0)
// DISCRETE_INPUT_LOGIC(COPSNROB_FIRES_INV)
DISCRETE_INPUT_NOT(COPSNROB_CRASH_INV) /* inverted for counter use */
DISCRETE_INPUT_LOGIC(COPSNROB_SCREECH_INV)
DISCRETE_INPUT_NOT(COPSNROB_AUDIO_ENABLE) /* IC A1, pins 2 & 12 */
/* These inputs are disabled until their address triggers are determined.
* Then these constants can be removed.
*/
DISCRETE_CONSTANT(COPSNROB_ZINGS_INV, 4) /* data bit will be normally high, when it goes low it triggers the one-shot which has a minimum on time of 0.2s */
DISCRETE_CONSTANT(COPSNROB_FIRES_INV, 4) /* data bit will be normally high */
/************************************************
* MOTOR0/1
************************************************/
COPSNROB_MOTOR01(COPSNROB_MOTOR0_SND, COPSNROB_MOTOR0_INV, 0)
COPSNROB_MOTOR01(COPSNROB_MOTOR1_SND, COPSNROB_MOTOR1_INV, 1)
/************************************************
* MOTOR2/3
************************************************/
COPSNROB_MOTOR23(COPSNROB_MOTOR2_SND, COPSNROB_MOTOR2_INV, 0)
COPSNROB_MOTOR23(COPSNROB_MOTOR3_SND, COPSNROB_MOTOR3_INV, 1)
/************************************************
* CRASH
************************************************/
DISCRETE_CUSTOM1(COPSNROB_NOISE_1, copsnrob_custom_noise, /* IC J2, pin 10 */
COPSNROB_2V, /* CLK */
nullptr)
/* COPSNROB_NOISE_2 derived from sub out of above custom module - IC J2, pin 11 */
/* We use the measured 555 timer frequency (IC M3) for speed */
DISCRETE_COUNTER(NODE_40, /* IC L2 */
NODE_41, /* ENAB - IC L2, pin 14 */
COPSNROB_CRASH_INV, /* RESET - IC L2, pin 11 */
92, /* IC L2, pin 4 - freq measured */
0, 15, DISC_COUNT_DOWN, 15, DISC_CLK_IS_FREQ) /* MIN; MAX; DIR; INIT0; CLKTYPE */
DISCRETE_TRANSFORM2(NODE_41, /* IC M2, pin 3 - goes high at count 0 */
NODE_40, 0, "01=!") /* -we will invert it for use by the counter module */
DISCRETE_SWITCH(NODE_42, /* IC L3 */
1, COPSNROB_NOISE_2, 0, NODE_40) /* ENAB; SWITCH; INP0; INP1 */
DISCRETE_DAC_R1(COPSNROB_CRASH_SND,
NODE_42, 3.8, /* DATA; VDATA */
&copsnrob_crash_dac)
/************************************************
* SCREECH
************************************************/
DISCRETE_CONSTANT(COPSNROB_SCREECH_SND, 0)
/************************************************
* FZ (Fires, Zings)
************************************************/
DISCRETE_CUSTOM3(NODE_60, copsnrob_zings_555_monostable, /* IC D3, pin 5 */
/* We can ignore R47 & R48 */
COPSNROB_ZINGS_INV, /* IC D3, pin 6 */
COPSNROB_R38, COPSNROB_C19,
nullptr)
DISCRETE_CUSTOM5(NODE_61, copsnrob_zings_555_astable, /* IC D3, pin 8 & 12 */
NODE_60, /* IC D3, pin 10 */
COPSNROB_R36, COPSNROB_R37,
COPSNROB_C3, COPSNROB_C13,
nullptr)
/* FIX - do a better implemetation of IC L4 */
DISCRETE_CRFILTER_VREF(NODE_62, /* IC L4, pin 9 */
NODE_61, /* IN0 */
COPSNROB_R26, COPSNROB_C39,
5.0 * RES_VOLTAGE_DIVIDER(COPSNROB_R74, COPSNROB_R75)) /* VREF */
DISCRETE_GAIN(COPSNROB_FZ_SND, /* IC L4, pin 8 */
NODE_62,
COPSNROB_R73 / COPSNROB_R26)
/************************************************
* MIXER
************************************************/
DISCRETE_MIXER5(NODE_90, /* IC B3, pin 3 */
COPSNROB_AUDIO_ENABLE, /* ENAB */
COPSNROB_MOTOR1_SND, COPSNROB_MOTOR0_SND, COPSNROB_FZ_SND, COPSNROB_SCREECH_SND, COPSNROB_CRASH_SND,
&copsnrob_final_mixer01)
DISCRETE_MIXER5(NODE_91, /* IC P3, pin 3 */
COPSNROB_AUDIO_ENABLE, /* ENAB */
COPSNROB_MOTOR3_SND, COPSNROB_MOTOR2_SND, COPSNROB_CRASH_SND, COPSNROB_SCREECH_SND, COPSNROB_FZ_SND,
&copsnrob_final_mixer23)
DISCRETE_OUTPUT(NODE_90, 32767.0*3.5)
DISCRETE_OUTPUT(NODE_91, 32767.0*3.5)
DISCRETE_SOUND_END
WRITE_LINE_MEMBER(copsnrob_state::one_start_w)
{
/* One Start */
m_leds[0] = state ? 0 :1;
}
void copsnrob_state::copsnrob_audio(machine_config &config)
{
/* sound hardware */
SPEAKER(config, "lspeaker").front_left();
SPEAKER(config, "rspeaker").front_right();
discrete_sound_device &discrete(DISCRETE(config, "discrete", copsnrob_discrete));
discrete.add_route(0, "lspeaker", 1.0);
discrete.add_route(1, "rspeaker", 1.0);
f9334_device &latch(F9334(config, "latch")); // H3 on audio board
latch.q_out_cb<0>().set("discrete", FUNC(discrete_device::write_line<COPSNROB_MOTOR3_INV>));
latch.q_out_cb<1>().set("discrete", FUNC(discrete_device::write_line<COPSNROB_MOTOR2_INV>));
latch.q_out_cb<2>().set("discrete", FUNC(discrete_device::write_line<COPSNROB_MOTOR1_INV>));
latch.q_out_cb<3>().set("discrete", FUNC(discrete_device::write_line<COPSNROB_MOTOR0_INV>));
latch.q_out_cb<4>().set("discrete", FUNC(discrete_device::write_line<COPSNROB_SCREECH_INV>));
latch.q_out_cb<5>().set("discrete", FUNC(discrete_device::write_line<COPSNROB_CRASH_INV>));
latch.q_out_cb<6>().set(FUNC(copsnrob_state::one_start_w));
latch.q_out_cb<7>().set("discrete", FUNC(discrete_device::write_line<COPSNROB_AUDIO_ENABLE>));
}
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