186 lines
3.6 KiB
C
186 lines
3.6 KiB
C
/****************************************************************
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MAME / MESS functions
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****************************************************************/
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#include <stdlib.h>
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#include "mamedef.h"
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//#include "sndintrf.h"
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//#include "streams.h"
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#include "sn76496.h"
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#include "sn76489.h"
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#include "sn764intf.h"
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#define EC_MAME 0x00 // SN76496 core from MAME
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#ifdef ENABLE_ALL_CORES
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#define EC_MAXIM 0x01 // SN76489 core by Maxim (from in_vgm)
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#endif
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#ifndef NULL
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#define NULL ((void *)0)
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#endif
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/* for stream system */
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typedef struct _sn764xx_state sn764xx_state;
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struct _sn764xx_state
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{
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void *chip;
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int EMU_CORE;
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};
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void sn764xx_stream_update(void *_info, stream_sample_t **outputs, int samples)
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{
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sn764xx_state* info = (sn764xx_state*)_info;
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switch(info->EMU_CORE)
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{
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case EC_MAME:
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SN76496Update(info->chip, outputs, samples);
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break;
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#ifdef ENABLE_ALL_CORES
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case EC_MAXIM:
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SN76489_Update((SN76489_Context*)info->chip, outputs, samples);
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break;
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#endif
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}
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}
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int device_start_sn764xx(void **_info, int EMU_CORE, int clock, int SampleRate, int shiftregwidth, int noisetaps,
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int negate, int stereo, int clockdivider, int freq0)
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{
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sn764xx_state *info;
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int rate;
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#ifdef ENABLE_ALL_CORES
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if (EMU_CORE >= 0x02)
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EMU_CORE = EC_MAME;
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#else
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EMU_CORE = EC_MAME;
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#endif
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info = (sn764xx_state*) calloc(1, sizeof(sn764xx_state));
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*_info = (void *) info;
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/* emulator create */
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info->EMU_CORE = EMU_CORE;
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switch(EMU_CORE)
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{
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case EC_MAME:
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rate = sn76496_start(&info->chip, clock, shiftregwidth, noisetaps,
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negate, stereo, clockdivider, freq0);
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sn76496_freq_limiter(clock & 0x3FFFFFFF, clockdivider, SampleRate);
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break;
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#ifdef ENABLE_ALL_CORES
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case EC_MAXIM:
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rate = SampleRate;
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info->chip = SN76489_Init(clock, rate);
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if (info->chip == NULL)
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return 0;
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SN76489_Config((SN76489_Context*)info->chip, noisetaps, shiftregwidth, 0);
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break;
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#endif
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}
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return rate;
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}
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void device_stop_sn764xx(void *_info)
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{
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sn764xx_state *info = (sn764xx_state*)_info;
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switch(info->EMU_CORE)
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{
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case EC_MAME:
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sn76496_shutdown(info->chip);
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break;
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#ifdef ENABLE_ALL_CORES
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case EC_MAXIM:
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SN76489_Shutdown((SN76489_Context*)info->chip);
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break;
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#endif
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}
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}
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void device_reset_sn764xx(void *_info)
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{
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sn764xx_state *info = (sn764xx_state*)_info;
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switch(info->EMU_CORE)
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{
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case EC_MAME:
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sn76496_reset(info->chip);
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break;
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#ifdef ENABLE_ALL_CORES
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case EC_MAXIM:
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SN76489_Reset((SN76489_Context*)info->chip);
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break;
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#endif
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}
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}
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void sn764xx_w(void *_info, offs_t offset, UINT8 data)
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{
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sn764xx_state *info = (sn764xx_state*)_info;
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switch(info->EMU_CORE)
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{
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case EC_MAME:
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switch(offset)
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{
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case 0x00:
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sn76496_write_reg(info->chip, offset & 1, data);
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break;
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case 0x01:
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sn76496_stereo_w(info->chip, offset, data);
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break;
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}
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break;
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#ifdef ENABLE_ALL_CORES
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case EC_MAXIM:
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switch(offset)
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{
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case 0x00:
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SN76489_Write((SN76489_Context*)info->chip, data);
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break;
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case 0x01:
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SN76489_GGStereoWrite((SN76489_Context*)info->chip, data);
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break;
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}
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break;
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#endif
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}
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}
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void sn764xx_set_mute_mask(void *_info, UINT32 MuteMask)
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{
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sn764xx_state *info = (sn764xx_state*)_info;
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switch(info->EMU_CORE)
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{
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case EC_MAME:
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sn76496_set_mutemask(info->chip, MuteMask);
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break;
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#ifdef ENABLE_ALL_CORES
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case EC_MAXIM:
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SN76489_SetMute(info->chip, ~MuteMask & 0x0F);
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break;
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#endif
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}
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return;
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}
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void sn764xx_set_panning(void *_info, INT16* PanVals)
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{
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sn764xx_state *info = (sn764xx_state*)_info;
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switch(info->EMU_CORE)
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{
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case EC_MAME:
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break;
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#ifdef ENABLE_ALL_CORES
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case EC_MAXIM:
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SN76489_SetPanning(info->chip, PanVals[0x00], PanVals[0x01], PanVals[0x02], PanVals[0x03]);
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break;
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#endif
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}
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return;
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}
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