diff options
Diffstat (limited to 'trunk/src/mame/audio/sprint8.c')
-rw-r--r-- | trunk/src/mame/audio/sprint8.c | 314 |
1 files changed, 314 insertions, 0 deletions
diff --git a/trunk/src/mame/audio/sprint8.c b/trunk/src/mame/audio/sprint8.c new file mode 100644 index 00000000000..648cd34e661 --- /dev/null +++ b/trunk/src/mame/audio/sprint8.c @@ -0,0 +1,314 @@ +/************************************************************************ + * sprint8 Sound System Analog emulation + * Sept 2009, Derrick Renaud + ************************************************************************/ + +#include "emu.h" +#include "includes/sprint8.h" + + +/* Discrete Sound Input Nodes */ +#define SPRINT8_CRASH_EN NODE_01 +#define SPRINT8_SCREECH_EN NODE_02 +#define SPRINT8_ATTRACT_EN NODE_03 +#define SPRINT8_MOTOR1_EN NODE_04 +#define SPRINT8_MOTOR2_EN NODE_05 +#define SPRINT8_MOTOR3_EN NODE_06 +#define SPRINT8_MOTOR4_EN NODE_07 +#define SPRINT8_MOTOR5_EN NODE_08 +#define SPRINT8_MOTOR6_EN NODE_09 +#define SPRINT8_MOTOR7_EN NODE_10 +#define SPRINT8_MOTOR8_EN NODE_11 + +/* Discrete Sound Output Nodes */ +#define SPRINT8_NOISE NODE_12 +#define SPRINT8_MOTOR1_SND NODE_13 +#define SPRINT8_MOTOR2_SND NODE_14 +#define SPRINT8_MOTOR3_SND NODE_15 +#define SPRINT8_MOTOR4_SND NODE_16 +#define SPRINT8_MOTOR5_SND NODE_17 +#define SPRINT8_MOTOR6_SND NODE_18 +#define SPRINT8_MOTOR7_SND NODE_19 +#define SPRINT8_MOTOR8_SND NODE_20 +#define SPRINT8_CRASH_SCREECH_SND NODE_21 +#define SPRINT8_AUDIO_1_2 NODE_22 +#define SPRINT8_AUDIO_3_7 NODE_23 +#define SPRINT8_AUDIO_5_6 NODE_24 +#define SPRINT8_AUDIO_4_8 NODE_25 + +/* Adjusters */ +#define SPRINT8_R132_POT NODE_29 + + +/* Parts List - Resistors */ +#define SPRINT8_R1 RES_K(47) +#define SPRINT8_R3 RES_K(47) +#define SPRINT8_R4 RES_K(47) +#define SPRINT8_R19 RES_K(1) +#define SPRINT8_R20 RES_K(1) +#define SPRINT8_R27 RES_K(18) +#define SPRINT8_R28 820 +#define SPRINT8_R29 RES_K(330) +#define SPRINT8_R39 RES_K(120) +#define SPRINT8_R40 RES_K(22) +#define SPRINT8_R41 RES_K(150) +#define SPRINT8_R89 RES_K(22) +#define SPRINT8_R91 RES_K(47) +#define SPRINT8_R93 RES_K(2.2) +#define SPRINT8_R96 RES_K(47) +#define SPRINT8_R97 RES_K(2.2) +#define SPRINT8_R99 RES_K(27) +#define SPRINT8_R100 RES_K(1) +#define SPRINT8_R101 RES_K(2.2) +#define SPRINT8_R132 RES_K(100) +#define SPRINT8_R145 RES_K(3.3) +#define SPRINT8_R146 RES_K(7.5) +#define SPRINT8_R147 100 +#define SPRINT8_R148 RES_K(1) +#define SPRINT8_R149 RES_K(22) + +/* Parts List - Capacitors */ +#define SPRINT8_C8 CAP_U(.01) +#define SPRINT8_C17 CAP_U(.001) +#define SPRINT8_C18 CAP_U(.047) +#define SPRINT8_C19 CAP_U(.047) +#define SPRINT8_C26 CAP_U(100) +#define SPRINT8_C27 CAP_U(.22) +#define SPRINT8_C28 CAP_U(.1) +#define SPRINT8_C59 CAP_U(.1) +#define SPRINT8_C63 CAP_U(.1) +#define SPRINT8_C64 CAP_U(.1) +#define SPRINT8_C89 CAP_U(.1) +#define SPRINT8_C90 CAP_U(.1) + +#define SPRINT8_HSYNC 15750.0 /* not checked */ +#define SPRINT8_1V SPRINT8_HSYNC/2 +#define SPRINT8_2V SPRINT8_1V/2 + + +static const discrete_lfsr_desc sprint8_lfsr = +{ + DISC_CLK_IS_FREQ, + 16, /* Bit Length */ + 0, /* Reset Value */ + 10, /* Use Bit 10 as XOR input 0 */ + 15, /* Use Bit 15 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 */ + DISC_LFSR_FLAG_RESET_TYPE_L, /* Output is not inverted */ + 12 /* Output bit */ +}; + +static const discrete_555_desc sprint8_crash_555a_desc = +{ + DISC_555_OUT_ENERGY, + 5, DEFAULT_555_VALUES +}; + +static const discrete_integrate_info sprint8_crash_integrate = +{ + DISC_INTEGRATE_OP_AMP_1, + SPRINT8_R99, SPRINT8_R97, SPRINT8_R96, SPRINT8_C59, /*r1, r2, r3, c, */ + 5, 5, /* v1, vP*/ + 0, 0, 0 /* no functions */ +}; + +static const discrete_555_desc sprint8_motor_555a_desc = +{ + DISC_555_OUT_COUNT_F_X, + 5, DEFAULT_555_VALUES +}; + +static const discrete_555_desc sprint8_motor_555m_desc = +{ + DISC_555_OUT_ENERGY | DISC_555_TRIGGER_IS_COUNT, + 5, DEFAULT_555_VALUES +}; + +static const discrete_op_amp_filt_info sprint8_motor_filter = +{ + SPRINT8_R27, 0, SPRINT8_R28 + RES_2_PARALLEL(SPRINT8_R19, SPRINT8_R20), 0, SPRINT8_R29, /* r1, r2, r3, r4, rF, */ + SPRINT8_C18, SPRINT8_C19, 0, /* c1, c2, c3, */ + 5.0 * RES_VOLTAGE_DIVIDER(SPRINT8_R19, SPRINT8_R20), 5, 0 /* vRef, vP, vN */ +}; + +static const discrete_mixer_desc sprint8_crash_screech_mixer = +{ + DISC_MIXER_IS_RESISTOR, + {SPRINT8_R149, SPRINT8_R91}, + {0, NODE_80}, /* R93 switched in/out of circuit */ + {0}, 0, 0, SPRINT8_C64, 0, 0, 1 /* c, rI, rF, cF, cAmp, vRef, gain */ +}; + +static const discrete_mixer_desc sprint8_mixer = +{ + DISC_MIXER_IS_RESISTOR, + {SPRINT8_R1 + SPRINT8_R100, SPRINT8_R3, SPRINT8_R4}, + {0}, {0}, 0, 0, 0, SPRINT8_C8, 0, 1 /* r_nodes, c, rI, rF, cF, cAmp, vRef, gain */ +}; + + +/************************************************ + * Car Motor + ************************************************/ +/* The first (astable) 555 generates a quick falling pulse that triggers the second (monostable) 555. + * This pulse is passed through C17 and pulled up with R40. This pulse is too fast to emulate so + * we will just tell the monostable it was triggered once and ignore C17/R40. + */ +#define SPRINT8_MOTOR_CIRCUIT(_car) \ +DISCRETE_RCFILTER(NODE_RELATIVE(NODE_30, _car - 1), NODE_RELATIVE(SPRINT8_MOTOR1_EN, _car - 1), SPRINT8_R89, SPRINT8_C26) \ +DISCRETE_ADDER2(NODE_RELATIVE(NODE_40, _car - 1), 1, NODE_RELATIVE(NODE_30, _car - 1), 0.7) /* add Q21 shift */ \ +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) \ +DISCRETE_555_MSTABLE(NODE_RELATIVE(NODE_60, _car - 1), 1, NODE_RELATIVE(NODE_50, _car - 1), SPRINT8_R41, SPRINT8_C28, &sprint8_motor_555m_desc) \ +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) + + +DISCRETE_SOUND_START( sprint8 ) + /************************************************ + * Input register mapping + ************************************************/ + DISCRETE_INPUT_LOGIC(SPRINT8_CRASH_EN) + DISCRETE_INPUT_NOT (SPRINT8_SCREECH_EN) + DISCRETE_INPUT_NOT (SPRINT8_ATTRACT_EN) + DISCRETE_INPUTX_LOGIC(SPRINT8_MOTOR1_EN, DEFAULT_TTL_V_LOGIC_1, 0, 0) + DISCRETE_INPUTX_LOGIC(SPRINT8_MOTOR2_EN, DEFAULT_TTL_V_LOGIC_1, 0, 0) + DISCRETE_INPUTX_LOGIC(SPRINT8_MOTOR3_EN, DEFAULT_TTL_V_LOGIC_1, 0, 0) + DISCRETE_INPUTX_LOGIC(SPRINT8_MOTOR4_EN, DEFAULT_TTL_V_LOGIC_1, 0, 0) + DISCRETE_INPUTX_LOGIC(SPRINT8_MOTOR5_EN, DEFAULT_TTL_V_LOGIC_1, 0, 0) + DISCRETE_INPUTX_LOGIC(SPRINT8_MOTOR6_EN, DEFAULT_TTL_V_LOGIC_1, 0, 0) + DISCRETE_INPUTX_LOGIC(SPRINT8_MOTOR7_EN, DEFAULT_TTL_V_LOGIC_1, 0, 0) + DISCRETE_INPUTX_LOGIC(SPRINT8_MOTOR8_EN, DEFAULT_TTL_V_LOGIC_1, 0, 0) + + DISCRETE_TASK_START(0) + DISCRETE_ADJUSTMENT(SPRINT8_R132_POT, 0, SPRINT8_R132, DISC_LINADJ, "R132") + + /************************************************ + * Noise Generator, Crash, Screech + ************************************************/ + /* Address line A2 is used to XOR the feedback bits. + * This can not easily be implemented, so I just set the + * feedback as XNOR. */ + DISCRETE_LFSR_NOISE(SPRINT8_NOISE, /* IC F7, pin 13 */ + 1, /* ENAB */ + SPRINT8_ATTRACT_EN, /* RESET */ + SPRINT8_2V, 1, 0, 0.5, &sprint8_lfsr) /* CLK,AMPL,FEED,BIAS,LFSRTB */ + + DISCRETE_TASK_END() + + DISCRETE_TASK_START(1) + DISCRETE_GAIN(NODE_70, SPRINT8_NOISE, DEFAULT_TTL_V_LOGIC_1 * RES_VOLTAGE_DIVIDER(SPRINT8_R148, SPRINT8_R147)) + DISCRETE_CRFILTER_VREF(NODE_71, + NODE_70, /* IN0 */ + RES_2_PARALLEL(SPRINT8_R148, SPRINT8_R147) + RES_2_PARALLEL(RES_K(5), RES_K(10)), + SPRINT8_C90, + 5.0 * RES_VOLTAGE_DIVIDER(RES_K(5), RES_K(10))) /* ref to 555 CV pin */ + DISCRETE_555_ASTABLE_CV(NODE_72, + SPRINT8_SCREECH_EN, /* RESET */ + SPRINT8_R145, SPRINT8_R146, SPRINT8_C89, + NODE_71, /* CTRLV */ + &sprint8_crash_555a_desc) + DISCRETE_INTEGRATE(NODE_73, SPRINT8_CRASH_EN, 0, &sprint8_crash_integrate) + + DISCRETE_SWITCH(NODE_80, + 1, /* ENAB */ + SPRINT8_NOISE, /* SWITCH */ + SPRINT8_R93, 1) /* INP0,INP1*/ + DISCRETE_SWITCH(NODE_74, /* effect of Q20 */ + 1, /* ENAB */ + SPRINT8_NOISE, /* SWITCH */ + NODE_73, 0) /* INP0,INP1*/ + DISCRETE_MIXER2(NODE_75, + 1, /* ENAB */ + NODE_72, + NODE_74, + &sprint8_crash_screech_mixer) + + DISCRETE_CRFILTER_VREF(NODE_76, + NODE_75, /* IN0 */ + SPRINT8_R93 + SPRINT8_R91, SPRINT8_C63, + 5) /* VREF */ + /* IC E5, pin 14 gain. Does not simulate minor DC offset caused by R93. */ + DISCRETE_TRANSFORM5(NODE_77, NODE_76, 5, SPRINT8_R132_POT, SPRINT8_R101, 1, "01-23/4+*1+") + DISCRETE_CLAMP(SPRINT8_CRASH_SCREECH_SND, NODE_77, 0, 15.0 - 1.5) + DISCRETE_TASK_END() + + /************************************************ + * Car Motor + ************************************************/ + DISCRETE_TASK_START(1) + SPRINT8_MOTOR_CIRCUIT(1) + SPRINT8_MOTOR_CIRCUIT(2) + DISCRETE_TASK_END() + + DISCRETE_TASK_START(1) + SPRINT8_MOTOR_CIRCUIT(3) + SPRINT8_MOTOR_CIRCUIT(7) + DISCRETE_TASK_END() + + DISCRETE_TASK_START(1) + SPRINT8_MOTOR_CIRCUIT(5) + SPRINT8_MOTOR_CIRCUIT(6) + DISCRETE_TASK_END() + + DISCRETE_TASK_START(1) + SPRINT8_MOTOR_CIRCUIT(4) + SPRINT8_MOTOR_CIRCUIT(8) + DISCRETE_TASK_END() + + /************************************************ + * Final Mix + ************************************************/ + DISCRETE_TASK_START(2) + DISCRETE_MIXER3(SPRINT8_AUDIO_1_2, + SPRINT8_ATTRACT_EN, /* ENAB */ + SPRINT8_CRASH_SCREECH_SND, + SPRINT8_MOTOR1_SND, + SPRINT8_MOTOR2_SND, + &sprint8_mixer) + DISCRETE_MIXER3(SPRINT8_AUDIO_3_7, + SPRINT8_ATTRACT_EN, /* ENAB */ + SPRINT8_CRASH_SCREECH_SND, + SPRINT8_MOTOR3_SND, + SPRINT8_MOTOR7_SND, + &sprint8_mixer) + DISCRETE_MIXER3(SPRINT8_AUDIO_5_6, + SPRINT8_ATTRACT_EN, /* ENAB */ + SPRINT8_CRASH_SCREECH_SND, + SPRINT8_MOTOR5_SND, + SPRINT8_MOTOR6_SND, + &sprint8_mixer) + DISCRETE_MIXER3(SPRINT8_AUDIO_4_8, + SPRINT8_ATTRACT_EN, /* ENAB */ + SPRINT8_CRASH_SCREECH_SND, + SPRINT8_MOTOR4_SND, + SPRINT8_MOTOR8_SND, + &sprint8_mixer) + DISCRETE_OUTPUT(SPRINT8_AUDIO_1_2, 65500.0/8) + DISCRETE_OUTPUT(SPRINT8_AUDIO_3_7, 65500.0/8) + DISCRETE_OUTPUT(SPRINT8_AUDIO_5_6, 65500.0/8) + DISCRETE_OUTPUT(SPRINT8_AUDIO_4_8, 65500.0/8) + DISCRETE_TASK_END() +DISCRETE_SOUND_END + + +WRITE8_DEVICE_HANDLER( sprint8_crash_w ) +{ + discrete_sound_w(device, SPRINT8_CRASH_EN, data & 0x01); +} + +WRITE8_DEVICE_HANDLER( sprint8_screech_w ) +{ + discrete_sound_w(device, SPRINT8_SCREECH_EN, data & 0x01); +} + +WRITE8_DEVICE_HANDLER( sprint8_attract_w ) +{ + discrete_sound_w(device, SPRINT8_ATTRACT_EN, data & 0x01); +} + +WRITE8_DEVICE_HANDLER( sprint8_motor_w ) +{ + discrete_sound_w(device, NODE_RELATIVE(SPRINT8_MOTOR1_EN, offset & 0x07), data & 0x01); +} |