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arcadez2003 2024-08-17 20:56:06 +01:00 committed by GitHub
parent 00aab4a06a
commit da281a6845
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1 changed files with 7 additions and 26 deletions
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33
src/drivers/galaga.c
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@ -1833,46 +1833,27 @@ static struct GfxDecodeInfo gfxdecodeinfo_digdug[] =
{ -1 } /* end of array */
};
/* The resistance path of the namco sound is 16k compared to
the 10k of the highest gain 54xx filter. Giving a 10/16 gain.
*/
static struct namco_interface namco_interface =
{
18432000/6/32, /* 96 kHz sample rate */
3, /* number of voices */
90*10/16, /* playback volume */
100, /* playback volume */
REGION_SOUND1 /* memory region */
};
/* Only used by bosco. After filtering the 4V 52xx output,
* the signal is 1V, or 25%. The relative volume between
* 52xx & 54xx is the same.
*/
static struct namco_52xx_interface namco_52xx_interface =
{
18432000/12, /* 1.536 MHz */
90, /* volume */
REGION_SOUND2, /* memory region */
4000, /* Playback frequency - from 555 timer 6M */
80, /* High pass filter fc */
0.3, /* High pass filter Q */
2400, /* Low pass filter fc */
0.9, /* Low pass filter Q */
.25 /* Combined gain of both filters */
50, /* volume */
REGION_SOUND2 /* memory region */
};
static struct namco_54xx_interface namco_54xx_interface =
{
18432000/12, /* 1.536 MHz */
90, /* volume */
{ RES_K(100), RES_K(47), RES_K(150) }, /* R24, R33, R42 */
{ RES_K(22), RES_K(10), RES_K(22) }, /* R23, R34, R41 */
{ RES_K(220), RES_K(150), RES_K(470) }, /* R22, R35, R40 */
{ RES_K(33), RES_K(33), RES_K(10)}, /* R21, R36, R37 */
{ CAP_U(.001), CAP_U(.01), CAP_U(.01) }, /* C31, C29, C27 */
{ CAP_U(.001), CAP_U(.01), CAP_U(.01) }, /* C30, C28, C26 */
18432000/12, /* 1.536 MHz */
{ 100, 100, 100 } /* volume of the three outputs */
};
static const char *bosco_sample_names[] =
@ -1885,7 +1866,7 @@ static const char *bosco_sample_names[] =
static struct Samplesinterface samples_interface_bosco =
{
1, /* 1 channel */
95, /* volume */
100, /* volume */
bosco_sample_names
};