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-rw-r--r--trunk/src/mame/audio/sprint8.c314
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);
+}