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Let's add these. We might need them later.

This commit is contained in:
iq_132 2017-04-29 02:32:01 +00:00
parent 1fa20d67af
commit 65e6c74b2a
2 changed files with 71 additions and 25 deletions
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91
src/burn/snd/namco_snd.cpp
View File

@ -1,17 +1,3 @@
// Based on MAME sources by Nicola Salmoria,Aaron Giles
/***************************************************************************
NAMCO sound driver.
This driver handles the four known types of NAMCO wavetable sounds:
- 3-voice mono (PROM-based design: Pac-Man, Pengo, Dig Dug, etc)
- 8-voice quadrophonic (Pole Position 1, Pole Position 2)
- 8-voice mono (custom 15XX: Mappy, Dig Dug 2, etc)
- 8-voice stereo (System 1)
***************************************************************************/
#include "burnint.h"
#include "burn_sound.h"
#include "namco_snd.h"
@ -181,15 +167,11 @@ void NamcoSoundUpdate(INT16* buffer, INT32 length)
INT32 cnt;
if (voice->noise_state) {
*mix = BURN_SND_CLIP(*mix + noise_data);
mix++;
*mix = BURN_SND_CLIP(*mix + noise_data);
mix++;
*(mix++) = BURN_SND_CLIP(*mix + noise_data);
*(mix++) = BURN_SND_CLIP(*mix + noise_data);
} else {
*mix = BURN_SND_CLIP(*mix - noise_data);
mix++;
*mix = BURN_SND_CLIP(*mix - noise_data);
mix++;
*(mix++) = BURN_SND_CLIP(*mix - noise_data);
*(mix++) = BURN_SND_CLIP(*mix - noise_data);
}
if (hold)
@ -451,6 +433,65 @@ static void namcos1_sound_write(INT32 offset, INT32 data)
}
}
void namco_15xx_write(INT32 offset, UINT8 data)
{
if (offset > 63)
{
// logerror("NAMCO 15XX sound: Attempting to write past the 64 registers segment\n");
return;
}
if (namco_soundregs[offset] == data)
return;
/* set the register */
namco_soundregs[offset] = data;
INT32 ch = offset / 8;
if (ch >= chip->num_voices)
return;
/* recompute the voice parameters */
sound_channel *voice = chip->channel_list + ch;
switch (offset - ch * 8)
{
case 0x03:
voice->volume[0] = data & 0x0f;
break;
case 0x06:
voice->waveform_select = (data >> 4) & 7;
case 0x04:
case 0x05:
/* the frequency has 20 bits */
voice->frequency = namco_soundregs[ch * 8 + 0x04];
voice->frequency += namco_soundregs[ch * 8 + 0x05] << 8;
voice->frequency += (namco_soundregs[ch * 8 + 0x06] & 15) << 16; /* high bits are from here */
break;
}
}
void namco_15xx_sharedram_write(INT32 offset, UINT8 data)
{
offset &= 0x3ff;
if (offset < 0x40) {
namco_15xx_write(offset, data);
} else {
namco_soundregs[offset] = data;
}
}
UINT8 namco_15xx_sharedram_read(INT32 offset)
{
return namco_soundregs[offset & 0x3ff];
}
void namco_15xx_sound_enable(INT32 value)
{
chip->sound_enable = (value) ? 1 : 0;
}
void namcos1_custom30_write(INT32 offset, INT32 data)
{
#if defined FBA_DEBUG
@ -567,8 +608,8 @@ void NamcoSoundInit(INT32 clock, INT32 num_voices, INT32 bAdd)
chip = (struct namco_sound*)malloc(sizeof(*chip));
memset(chip, 0, sizeof(*chip));
namco_soundregs = (UINT8*)malloc(0x40);
memset(namco_soundregs, 0, 0x40);
namco_soundregs = (UINT8*)malloc(0x400);
memset(namco_soundregs, 0, 0x400);
chip->num_voices = num_voices;
chip->last_channel = chip->channel_list + chip->num_voices;
@ -694,7 +735,7 @@ void NamcoSoundScan(INT32 nAction,INT32 *pnMin)
memset(&ba, 0, sizeof(ba));
sprintf(szName, "NamcoSoundRegs");
ba.Data = namco_soundregs;
ba.nLen = 0x40;
ba.nLen = 0x400;
ba.nAddress = 0;
ba.szName = szName;
BurnAcb(&ba);

5
src/burn/snd/namco_snd.h
View File

@ -11,6 +11,11 @@ void NamcoSoundReset();
void namcos1_custom30_write(INT32 offset, INT32 data);
UINT8 namcos1_custom30_read(INT32 offset);
void namco_15xx_write(INT32 offset, UINT8 data);
void namco_15xx_sharedram_write(INT32 offset, UINT8 data);
UINT8 namco_15xx_sharedram_read(INT32 offset);
void namco_15xx_sound_enable(INT32 value);
#define BURN_SND_NAMCOSND_ROUTE_1 0
#define BURN_SND_NAMCOSND_ROUTE_2 1