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/************************************************************************
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* sprint8 Sound System Analog emulation
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* Sept 2009, Derrick Renaud
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************************************************************************/
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/* Discrete Sound Input Nodes */
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#define SPRINT8_CRASH_EN NODE_01
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#define SPRINT8_SCREECH_EN NODE_02
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#define SPRINT8_ATTRACT_EN NODE_03
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#define SPRINT8_MOTOR1_EN NODE_04
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#define SPRINT8_MOTOR2_EN NODE_05
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#define SPRINT8_MOTOR3_EN NODE_06
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#define SPRINT8_MOTOR4_EN NODE_07
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#define SPRINT8_MOTOR5_EN NODE_08
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#define SPRINT8_MOTOR6_EN NODE_09
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#define SPRINT8_MOTOR7_EN NODE_10
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#define SPRINT8_MOTOR8_EN NODE_11
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/* Discrete Sound Output Nodes */
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#define SPRINT8_NOISE NODE_12
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#define SPRINT8_MOTOR1_SND NODE_13
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#define SPRINT8_MOTOR2_SND NODE_14
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#define SPRINT8_MOTOR3_SND NODE_15
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#define SPRINT8_MOTOR4_SND NODE_16
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#define SPRINT8_MOTOR5_SND NODE_17
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#define SPRINT8_MOTOR6_SND NODE_18
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#define SPRINT8_MOTOR7_SND NODE_19
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#define SPRINT8_MOTOR8_SND NODE_20
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#define SPRINT8_CRASH_SCREECH_SND NODE_21
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#define SPRINT8_AUDIO_1_2 NODE_22
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#define SPRINT8_AUDIO_3_7 NODE_23
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#define SPRINT8_AUDIO_5_6 NODE_24
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#define SPRINT8_AUDIO_4_8 NODE_25
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#define SPRINT8_R132_POT NODE_29
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/* Parts List - Resistors */
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#define SPRINT8_R1 RES_K(47)
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#define SPRINT8_R3 RES_K(47)
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#define SPRINT8_R4 RES_K(47)
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#define SPRINT8_R19 RES_K(1)
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#define SPRINT8_R20 RES_K(1)
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#define SPRINT8_R27 RES_K(18)
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#define SPRINT8_R28 820
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#define SPRINT8_R29 RES_K(330)
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#define SPRINT8_R39 RES_K(120)
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#define SPRINT8_R40 RES_K(22)
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#define SPRINT8_R41 RES_K(150)
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#define SPRINT8_R89 RES_K(22)
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#define SPRINT8_R91 RES_K(47)
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#define SPRINT8_R93 RES_K(2.2)
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#define SPRINT8_R96 RES_K(47)
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#define SPRINT8_R97 RES_K(2.2)
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#define SPRINT8_R99 RES_K(27)
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#define SPRINT8_R100 RES_K(1)
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#define SPRINT8_R101 RES_K(2.2)
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#define SPRINT8_R132 RES_K(100)
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#define SPRINT8_R145 RES_K(3.3)
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#define SPRINT8_R146 RES_K(7.5)
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#define SPRINT8_R147 100
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#define SPRINT8_R148 RES_K(1)
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#define SPRINT8_R149 RES_K(22)
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/* Parts List - Capacitors */
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#define SPRINT8_C8 CAP_U(.01)
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#define SPRINT8_C17 CAP_U(.001)
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#define SPRINT8_C18 CAP_U(.047)
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#define SPRINT8_C19 CAP_U(.047)
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#define SPRINT8_C26 CAP_U(100)
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#define SPRINT8_C27 CAP_U(.22)
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#define SPRINT8_C28 CAP_U(.1)
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#define SPRINT8_C59 CAP_U(.1)
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#define SPRINT8_C63 CAP_U(.1)
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#define SPRINT8_C64 CAP_U(.1)
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#define SPRINT8_C89 CAP_U(.1)
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#define SPRINT8_C90 CAP_U(.1)
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#define SPRINT8_HSYNC 15750.0 /* not checked */
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#define SPRINT8_1V SPRINT8_HSYNC/2
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#define SPRINT8_2V SPRINT8_1V/2
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static const discrete_lfsr_desc sprint8_lfsr =
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10, /* Use Bit 10 as XOR input 0 */
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15, /* Use Bit 15 as XOR input 1 */
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DISC_LFSR_XNOR, /* Feedback stage1 is XNOR */
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DISC_LFSR_OR, /* Feedback stage2 is just stage 1 output OR with external feed */
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DISC_LFSR_REPLACE, /* Feedback stage3 replaces the shifted register contents */
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0x000001, /* Everything is shifted into the first bit only */
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DISC_LFSR_FLAG_RESET_TYPE_L, /* Output is not inverted */
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static const discrete_555_desc sprint8_crash_555a_desc =
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5, DEFAULT_555_VALUES
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static const discrete_integrate_info sprint8_crash_integrate =
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DISC_INTEGRATE_OP_AMP_1,
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SPRINT8_R99, SPRINT8_R97, SPRINT8_R96, SPRINT8_C59, /*r1, r2, r3, c, */
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0, 0, 0 /* no functions */
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static const discrete_555_desc sprint8_motor_555a_desc =
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DISC_555_OUT_COUNT_F_X,
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5, DEFAULT_555_VALUES
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static const discrete_555_desc sprint8_motor_555m_desc =
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DISC_555_OUT_ENERGY | DISC_555_TRIGGER_IS_COUNT,
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5, DEFAULT_555_VALUES
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static const discrete_op_amp_filt_info sprint8_motor_filter =
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SPRINT8_R27, 0, SPRINT8_R28 + RES_2_PARALLEL(SPRINT8_R19, SPRINT8_R20), 0, SPRINT8_R29, /* r1, r2, r3, r4, rF, */
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SPRINT8_C18, SPRINT8_C19, 0, /* c1, c2, c3, */
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5.0 * RES_VOLTAGE_DIVIDER(SPRINT8_R19, SPRINT8_R20), 5, 0 /* vRef, vP, vN */
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static const discrete_mixer_desc sprint8_crash_screech_mixer =
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DISC_MIXER_IS_RESISTOR,
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{SPRINT8_R149, SPRINT8_R91},
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{0, NODE_80}, /* R93 switched in/out of circuit */
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{0}, 0, 0, SPRINT8_C64, 0, 0, 1 /* c, rI, rF, cF, cAmp, vRef, gain */
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static const discrete_mixer_desc sprint8_mixer =
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DISC_MIXER_IS_RESISTOR,
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{SPRINT8_R1 + SPRINT8_R100, SPRINT8_R3, SPRINT8_R4},
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{0}, {0}, 0, 0, 0, SPRINT8_C8, 0, 1 /* r_nodes, c, rI, rF, cF, cAmp, vRef, gain */
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/************************************************
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************************************************/
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/* The first (astable) 555 generates a quick falling pulse that triggers the second (monostable) 555.
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* This pulse is passed through C17 and pulled up with R40. This pulse is too fast to emulate so
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* we will just tell the monostable it was triggered once and ignore C17/R40.
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#define SPRINT8_MOTOR_CIRCUIT(_car) \
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DISCRETE_RCFILTER(NODE_RELATIVE(NODE_30, _car - 1), NODE_RELATIVE(SPRINT8_MOTOR1_EN, _car - 1), SPRINT8_R89, SPRINT8_C26) \
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DISCRETE_ADDER2(NODE_RELATIVE(NODE_40, _car - 1), 1, NODE_RELATIVE(NODE_30, _car - 1), 0.7) /* add Q21 shift */ \
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DISCRETE_555_ASTABLE_CV(NODE_RELATIVE(NODE_50, _car - 1), 1, SPRINT8_R39, 0, SPRINT8_C27, NODE_RELATIVE(NODE_40, _car - 1), &sprint8_motor_555a_desc) \
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DISCRETE_555_MSTABLE(NODE_RELATIVE(NODE_60, _car - 1), 1, NODE_RELATIVE(NODE_50, _car - 1), SPRINT8_R41, SPRINT8_C28, &sprint8_motor_555m_desc) \
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DISCRETE_OP_AMP_FILTER(NODE_RELATIVE(SPRINT8_MOTOR1_SND, _car - 1), 1, NODE_RELATIVE(NODE_60, _car - 1), 0, DISC_OP_AMP_FILTER_IS_BAND_PASS_1M, &sprint8_motor_filter)
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DISCRETE_SOUND_START( sprint8 )
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/************************************************
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* Input register mapping
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************************************************/
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DISCRETE_INPUT_LOGIC(SPRINT8_CRASH_EN)
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DISCRETE_INPUT_NOT (SPRINT8_SCREECH_EN)
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DISCRETE_INPUT_NOT (SPRINT8_ATTRACT_EN)
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DISCRETE_INPUTX_LOGIC(SPRINT8_MOTOR1_EN, DEFAULT_TTL_V_LOGIC_1, 0, 0)
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DISCRETE_INPUTX_LOGIC(SPRINT8_MOTOR2_EN, DEFAULT_TTL_V_LOGIC_1, 0, 0)
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DISCRETE_INPUTX_LOGIC(SPRINT8_MOTOR3_EN, DEFAULT_TTL_V_LOGIC_1, 0, 0)
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DISCRETE_INPUTX_LOGIC(SPRINT8_MOTOR4_EN, DEFAULT_TTL_V_LOGIC_1, 0, 0)
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DISCRETE_INPUTX_LOGIC(SPRINT8_MOTOR5_EN, DEFAULT_TTL_V_LOGIC_1, 0, 0)
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DISCRETE_INPUTX_LOGIC(SPRINT8_MOTOR6_EN, DEFAULT_TTL_V_LOGIC_1, 0, 0)
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DISCRETE_INPUTX_LOGIC(SPRINT8_MOTOR7_EN, DEFAULT_TTL_V_LOGIC_1, 0, 0)
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DISCRETE_INPUTX_LOGIC(SPRINT8_MOTOR8_EN, DEFAULT_TTL_V_LOGIC_1, 0, 0)
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DISCRETE_TASK_START(0)
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DISCRETE_ADJUSTMENT_TAG(SPRINT8_R132_POT, 0, SPRINT8_R132, DISC_LINADJ, "R132")
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/************************************************
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* Noise Generator, Crash, Screech
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************************************************/
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/* Address line A2 is used to XOR the feedback bits.
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* This can not easily be implemented, so I just set the
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* feedback as XNOR. */
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DISCRETE_LFSR_NOISE(SPRINT8_NOISE, /* IC F7, pin 13 */
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SPRINT8_ATTRACT_EN, /* RESET */
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SPRINT8_2V, 1, 0, 0.5, &sprint8_lfsr) /* CLK,AMPL,FEED,BIAS,LFSRTB */
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DISCRETE_TASK_START(1)
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DISCRETE_GAIN(NODE_70, SPRINT8_NOISE, DEFAULT_TTL_V_LOGIC_1 * RES_VOLTAGE_DIVIDER(SPRINT8_R148, SPRINT8_R147))
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DISCRETE_CRFILTER_VREF(NODE_71,
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RES_2_PARALLEL(SPRINT8_R148, SPRINT8_R147) + RES_2_PARALLEL(RES_K(5), RES_K(10)),
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5.0 * RES_VOLTAGE_DIVIDER(RES_K(5), RES_K(10))) /* ref to 555 CV pin */
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DISCRETE_555_ASTABLE_CV(NODE_72,
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SPRINT8_SCREECH_EN, /* RESET */
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SPRINT8_R145, SPRINT8_R146, SPRINT8_C89,
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&sprint8_crash_555a_desc)
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DISCRETE_INTEGRATE(NODE_73, SPRINT8_CRASH_EN, 0, &sprint8_crash_integrate)
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DISCRETE_SWITCH(NODE_80,
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SPRINT8_NOISE, /* SWITCH */
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SPRINT8_R93, 1) /* INP0,INP1*/
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DISCRETE_SWITCH(NODE_74, /* effect of Q20 */
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SPRINT8_NOISE, /* SWITCH */
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NODE_73, 0) /* INP0,INP1*/
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DISCRETE_MIXER2(NODE_75,
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&sprint8_crash_screech_mixer)
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DISCRETE_CRFILTER_VREF(NODE_76,
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SPRINT8_R93 + SPRINT8_R91, SPRINT8_C63,
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/* IC E5, pin 14 gain. Does not simulate minor DC offset caused by R93. */
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DISCRETE_TRANSFORM5(NODE_77, NODE_76, 5, SPRINT8_R132_POT, SPRINT8_R101, 1, "01-23/4+*1+")
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DISCRETE_CLAMP(SPRINT8_CRASH_SCREECH_SND, NODE_77, 0, 15.0 - 1.5)
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/************************************************
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************************************************/
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DISCRETE_TASK_START(1)
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SPRINT8_MOTOR_CIRCUIT(1)
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SPRINT8_MOTOR_CIRCUIT(2)
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DISCRETE_TASK_START(1)
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SPRINT8_MOTOR_CIRCUIT(3)
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SPRINT8_MOTOR_CIRCUIT(7)
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DISCRETE_TASK_START(1)
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SPRINT8_MOTOR_CIRCUIT(5)
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SPRINT8_MOTOR_CIRCUIT(6)
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DISCRETE_TASK_START(1)
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SPRINT8_MOTOR_CIRCUIT(4)
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SPRINT8_MOTOR_CIRCUIT(8)
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/************************************************
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************************************************/
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DISCRETE_TASK_START(2)
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DISCRETE_MIXER3(SPRINT8_AUDIO_1_2,
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SPRINT8_ATTRACT_EN, /* ENAB */
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SPRINT8_CRASH_SCREECH_SND,
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DISCRETE_MIXER3(SPRINT8_AUDIO_3_7,
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SPRINT8_ATTRACT_EN, /* ENAB */
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SPRINT8_CRASH_SCREECH_SND,
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DISCRETE_MIXER3(SPRINT8_AUDIO_5_6,
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SPRINT8_ATTRACT_EN, /* ENAB */
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SPRINT8_CRASH_SCREECH_SND,
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DISCRETE_MIXER3(SPRINT8_AUDIO_4_8,
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SPRINT8_ATTRACT_EN, /* ENAB */
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SPRINT8_CRASH_SCREECH_SND,
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DISCRETE_OUTPUT(SPRINT8_AUDIO_1_2, 65500.0/8)
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DISCRETE_OUTPUT(SPRINT8_AUDIO_3_7, 65500.0/8)
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DISCRETE_OUTPUT(SPRINT8_AUDIO_5_6, 65500.0/8)
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DISCRETE_OUTPUT(SPRINT8_AUDIO_4_8, 65500.0/8)
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WRITE8_DEVICE_HANDLER( sprint8_crash_w )
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discrete_sound_w(device, SPRINT8_CRASH_EN, data & 0x01);
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WRITE8_DEVICE_HANDLER( sprint8_screech_w )
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discrete_sound_w(device, SPRINT8_SCREECH_EN, data & 0x01);
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WRITE8_DEVICE_HANDLER( sprint8_attract_w )
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discrete_sound_w(device, SPRINT8_ATTRACT_EN, data & 0x01);
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WRITE8_DEVICE_HANDLER( sprint8_motor_w )
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discrete_sound_w(device, NODE_RELATIVE(SPRINT8_MOTOR1_EN, offset & 0x07), data & 0x01);
added
removed
src/mame/audio/sprint8.c
