[wrap]
/***************************************************************************
galaga.c
Sound handler
****************************************************************************/
#include "driver.h"
#include "namco54.h"
#include "galaga.h"
/*************************************
*
* Bosconian
*
* Discrete sound emulation: Feb 2007, D.R.
*
*************************************/
/* nodes - sounds */
#define BOSCO_CHANL1_SND NODE_11
#define BOSCO_CHANL2_SND NODE_12
#define BOSCO_CHANL3_SND NODE_13
#define BOSCO_CHANL4_SND NODE_14
#define BOSCO_54XX_DAC_R (1.0 / (1.0 / RES_K(47) + 1.0 / RES_K(22) + 1.0 / RES_K(10) + 1.0 / RES_K(4.7)))
static const discrete_dac_r1_ladder bosco_54xx_dac =
{
4, /* number of DAC bits */
/* 54XX_0 54XX_1 54XX_2 */
{ RES_K(47), /* R28, R32, R46 */
RES_K(22), /* R27, R31, R45 */
RES_K(10), /* R26, R30, R44 */
RES_K(4.7)}, /* R25, R29, R43 */
0, 0, 0, 0 /* nothing extra */
};
#define BOSCO_52XX_DAC_R (1.0 / (1.0 / RES_K(100) + 1.0 / RES_K(47) + 1.0 / RES_K(22) + 1.0 / RES_K(10)))
static const discrete_dac_r1_ladder bosco_52xx_dac =
{
4, /* number of DAC bits */
{ RES_K(100), /* R14 */
RES_K(47), /* R13 */
RES_K(22), /* R12 */
RES_K(10)}, /* R11 */
0, 0, 0, 0 /* nothing extra */
};
/* R39 R38 R39 */
#define BOSCO_VREF (5.0 * (RES_K(2.2) / (RES_K(3.3) + RES_K(2.2))))
static const discrete_op_amp_filt_info bosco_chanl1_filt =
{
BOSCO_54XX_DAC_R + RES_K(100), /* R24 */
0, /* no second input */
RES_K(22), /* R23 */
0, /* not used */
RES_K(220), /* R22 */
CAP_U(0.001), /* C31 */
CAP_U(0.001), /* C30 */
0, /* not used */
BOSCO_VREF, /* vRef */
5, /* vP */
0 /* vN */
};
static const discrete_op_amp_filt_info bosco_chanl2_filt =
{
BOSCO_54XX_DAC_R + RES_K(47), /* R33 */
0, /* no second input */
RES_K(10), /* R34 */
0, /* not used */
RES_K(150), /* R35 */
CAP_U(0.01), /* C29 */
CAP_U(0.01), /* C28 */
0, /* not used */
BOSCO_VREF, /* vRef */
5, /* vP */
0 /* vN */
};
static const discrete_op_amp_filt_info bosco_chanl3_filt =
{
BOSCO_54XX_DAC_R + RES_K(150), /* R42 */
0, /* no second input */
RES_K(22), /* R41 */
0, /* not used */
RES_K(470), /* R40 */
CAP_U(0.01), /* C27 */
CAP_U(0.01), /* C26 */
0, /* not used */
BOSCO_VREF, /* vRef */
5, /* vP */
0 /* vN */
};
static const discrete_mixer_desc bosco_filter_mixer =
{
DISC_MIXER_IS_OP_AMP,
{ RES_K(33), /* R21 */
RES_K(33), /* R36 */
RES_K(10)}, /* R37 */
{0}, /* no rNode{} */
{0}, /* no c{} */
0, /* no rI */
RES_K(3.3), /* R20 */
0, /* no cF */
0, /* no cAmp */
BOSCO_VREF, /* vRef */
1, /* gain */
};
static const discrete_mixer_desc bosco_final_mixer =
{
DISC_MIXER_IS_RESISTOR,
{ RES_K(10), /* R51 */
RES_K(10)}, /* R55 */
{0}, /* no rNode{} */
{0}, /* no c{} */
0, /* no rI */
RES_K(1), /* VR1 */
0, /* no cF */
CAP_U(0.1), /* C18 */
0, /* vRef */
462000 /* gain */
};
DISCRETE_SOUND_START(bosco)
/************************************************
* Input register mapping
************************************************/
DISCRETE_INPUT_DATA(NAMCO_54XX_0_DATA)
DISCRETE_INPUT_DATA(NAMCO_54XX_1_DATA)
DISCRETE_INPUT_DATA(NAMCO_54XX_2_DATA)
DISCRETE_INPUT_DATA(NAMCO_52XX_P_DATA)
/************************************************
* CHANL1 sound
************************************************/
DISCRETE_DAC_R1(NODE_20,
1, /* ENAB */
NAMCO_54XX_2_DATA,
4, /* 4V - unmeasured*/
&bosco_54xx_dac)
DISCRETE_OP_AMP_FILTER(BOSCO_CHANL1_SND,
1, /* ENAB */
NODE_20, /* INP0 */
0, /* INP1 - not used */
DISC_OP_AMP_FILTER_IS_BAND_PASS_1M, &bosco_chanl1_filt)
/************************************************
* CHANL2 sound
************************************************/
DISCRETE_DAC_R1(NODE_30,
1, /* ENAB */
NAMCO_54XX_1_DATA,
4, /* 4V - unmeasured*/
&bosco_54xx_dac)
DISCRETE_OP_AMP_FILTER(BOSCO_CHANL2_SND,
1, /* ENAB */
NODE_30, /* INP0 */
0, /* INP1 - not used */
DISC_OP_AMP_FILTER_IS_BAND_PASS_1M, &bosco_chanl2_filt)
/************************************************
* CHANL3 sound
************************************************/
DISCRETE_DAC_R1(NODE_40,
1, /* ENAB */
NAMCO_54XX_0_DATA,
4, /* 4V - unmeasured*/
&bosco_54xx_dac)
DISCRETE_OP_AMP_FILTER(BOSCO_CHANL3_SND,
1, /* ENAB */
NODE_40, /* INP0 */
0, /* INP1 - not used */
DISC_OP_AMP_FILTER_IS_BAND_PASS_1M, &bosco_chanl3_filt)
/************************************************
* CHANL4 sound
************************************************/
/* disabled until 52XX is emulated */
/* this circuit was simulated in SPICE and an equivalent filter circuit generated */
DISCRETE_DAC_R1(NODE_50,
0, /* ENAB */
NAMCO_52XX_P_DATA,
4, /* 4V - unmeasured*/
&bosco_52xx_dac)
DISCRETE_FILTER2(NODE_51,
0, /* ENAB */
NODE_50, /* INP0 */
80, /* FREQ */
1.0 / 0.3, /* DAMP */
DISC_FILTER_HIGHPASS)
DISCRETE_FILTER2(NODE_52,
0, /* ENAB */
NODE_51, /* INP0 */
2400, /* FREQ */
1.0 / 0.9, /* DAMP */
DISC_FILTER_LOWPASS)
DISCRETE_GAIN(BOSCO_CHANL4_SND,
NODE_52, /* IN0 */
0.25 /* overall filter GAIN */)
/************************************************
* Output
************************************************/
DISCRETE_MIXER3(NODE_90,
1, /* ENAB */
BOSCO_CHANL1_SND, /* IN0 */
BOSCO_CHANL2_SND, /* IN1 */
BOSCO_CHANL3_SND, /* IN2 */
&bosco_filter_mixer /* INFO */)
DISCRETE_MIXER2(NODE_91,
1, /* ENAB */
NODE_90, /* IN0 */
BOSCO_CHANL4_SND, /* IN1 */
&bosco_final_mixer /* INFO */)
DISCRETE_OUTPUT(NODE_91, 1)
DISCRETE_SOUND_END
/*************************************
*
* Galaga/Xevious
*
* Discrete sound emulation: Feb 2007, D.R.
*
*************************************/
/* nodes - sounds */
#define GALAGA_CHANL1_SND NODE_11
#define GALAGA_CHANL2_SND NODE_12
#define GALAGA_CHANL3_SND NODE_13
#define GALAGA_54XX_DAC_R (1.0 / (1.0 / RES_K(47) + 1.0 / RES_K(22) + 1.0 / RES_K(10) + 1.0 / RES_K(4.7)))
static const discrete_dac_r1_ladder galaga_54xx_dac =
{
4, /* number of DAC bits */
{ RES_K(47),
RES_K(22),
RES_K(10),
RES_K(4.7)},
0, 0, 0, 0 /* nothing extra */
};
#define GALAGA_VREF (5.0 * (RES_K(2.2) / (RES_K(3.3) + RES_K(2.2))))
static const discrete_op_amp_filt_info galaga_chanl1_filt =
{
GALAGA_54XX_DAC_R + RES_K(100),
0, /* no second input */
RES_K(22),
0, /* not used */
RES_K(220),
CAP_U(0.001),
CAP_U(0.001),
0, /* not used */
GALAGA_VREF, /* vRef */
5, /* vP */
0, /* vN */
};
static const discrete_op_amp_filt_info galaga_chanl2_filt =
{
GALAGA_54XX_DAC_R + RES_K(47),
0, /* no second input */
RES_K(10),
0, /* not used */
RES_K(150),
CAP_U(0.01),
CAP_U(0.01),
0, /* not used */
GALAGA_VREF, /* vRef */
5, /* vP */
0, /* vN */
};
static const discrete_op_amp_filt_info galaga_chanl3_filt =
{
GALAGA_54XX_DAC_R + RES_K(150),
0, /* no second input */
RES_K(22),
0, /* not used */
RES_K(470),
CAP_U(0.01),
CAP_U(0.01),
0, /* not used */
GALAGA_VREF, /* vRef */
5, /* vP */
0, /* vN */
};
static const discrete_mixer_desc galaga_final_mixer =
{
DISC_MIXER_IS_OP_AMP,
{ RES_K(33),
RES_K(33),
RES_K(10)},
{0}, /* no rNode{} */
{0}, /* no c{} */
0, /* no rI */
RES_K(3.3),
0, /* no cF */
CAP_U(0.1),
GALAGA_VREF, /* vRef */
40800, /* gain */
};
DISCRETE_SOUND_START(galaga)
/************************************************
* Input register mapping
************************************************/
DISCRETE_INPUT_DATA(NAMCO_54XX_0_DATA)
DISCRETE_INPUT_DATA(NAMCO_54XX_1_DATA)
DISCRETE_INPUT_DATA(NAMCO_54XX_2_DATA)
/************************************************
* CHANL1 sound
************************************************/
DISCRETE_DAC_R1(NODE_20,
1, /* ENAB */
NAMCO_54XX_2_DATA,
4, /* 4V - unmeasured*/
&galaga_54xx_dac)
DISCRETE_OP_AMP_FILTER(GALAGA_CHANL1_SND,
1, /* ENAB */
NODE_20, /* INP0 */
0, /* INP1 - not used */
DISC_OP_AMP_FILTER_IS_BAND_PASS_1M, &galaga_chanl1_filt)
/************************************************
* CHANL2 sound
************************************************/
DISCRETE_DAC_R1(NODE_30,
1, /* ENAB */
NAMCO_54XX_1_DATA,
4, /* 4V - unmeasured*/
&galaga_54xx_dac)
DISCRETE_OP_AMP_FILTER(GALAGA_CHANL2_SND,
1, /* ENAB */
NODE_30, /* INP0 */
0, /* INP1 - not used */
DISC_OP_AMP_FILTER_IS_BAND_PASS_1M, &galaga_chanl2_filt)
/************************************************
* CHANL3 sound
************************************************/
DISCRETE_DAC_R1(NODE_40,
1, /* ENAB */
NAMCO_54XX_0_DATA,
4, /* 4V - unmeasured*/
&galaga_54xx_dac)
DISCRETE_OP_AMP_FILTER(GALAGA_CHANL3_SND,
1, /* ENAB */
NODE_40, /* INP0 */
0, /* INP1 - not used */
DISC_OP_AMP_FILTER_IS_BAND_PASS_1M, &galaga_chanl3_filt)
/************************************************
* Output
************************************************/
DISCRETE_MIXER3(NODE_90,
1, /* ENAB */
GALAGA_CHANL1_SND, /* IN0 */
GALAGA_CHANL2_SND, /* IN1 */
GALAGA_CHANL3_SND, /* IN2 */
&galaga_final_mixer /* INFO */)
DISCRETE_OUTPUT(NODE_90, 1)
DISCRETE_SOUND_END
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