495 lines
12 KiB
C
495 lines
12 KiB
C
/***************************************************************************
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2610intf.c
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The YM2610 emulator supports up to 2 chips.
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Each chip has the following connections:
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- Status Read / Control Write A
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- Port Read / Data Write A
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- Control Write B
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- Data Write B
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***************************************************************************/
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#include <string.h> // for memset
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#include <stdlib.h> // for free
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#include <stddef.h> // for NULL
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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 "2610intf.h"
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#include "fm.h"
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#ifdef ENABLE_ALL_CORES
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#define EC_MAME 0x01 // AY8910 core from MAME
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#endif
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#define EC_EMU2149 0x00
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typedef struct _ym2610_state ym2610_state;
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struct _ym2610_state
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{
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//sound_stream * stream;
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//emu_timer * timer[2];
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void * chip;
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void * psg;
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int AY_EMU_CORE;
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//const ym2610_interface *intf;
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//const device_config *device;
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};
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#define CHTYPE_YM2610 0x22
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/*INLINE ym2610_state *get_safe_token(const device_config *device)
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{
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assert(device != NULL);
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assert(device->token != NULL);
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assert(device->type == SOUND);
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assert(sound_get_type(device) == SOUND_YM2610 || sound_get_type(device) == SOUND_YM2610B);
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return (ym2610_state *)device->token;
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}*/
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static void psg_set_clock(void *param, int clock)
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{
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ym2610_state *info = (ym2610_state *)param;
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if (info->psg != NULL)
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{
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switch(info->AY_EMU_CORE)
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{
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#ifdef ENABLE_ALL_CORES
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case EC_MAME:
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ay8910_set_clock_ym(info->psg, clock);
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break;
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#endif
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case EC_EMU2149:
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PSG_set_clock((PSG*)info->psg, clock);
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break;
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}
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}
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}
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static void psg_write(void *param, int address, int data)
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{
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ym2610_state *info = (ym2610_state *)param;
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if (info->psg != NULL)
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{
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switch(info->AY_EMU_CORE)
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{
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#ifdef ENABLE_ALL_CORES
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case EC_MAME:
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ay8910_write_ym(info->psg, address, data);
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break;
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#endif
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case EC_EMU2149:
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PSG_writeIO((PSG*)info->psg, address, data);
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break;
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}
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}
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}
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static int psg_read(void *param)
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{
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ym2610_state *info = (ym2610_state *)param;
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if (info->psg != NULL)
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{
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switch(info->AY_EMU_CORE)
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{
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#ifdef ENABLE_ALL_CORES
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case EC_MAME:
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return ay8910_read_ym(info->psg);
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#endif
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case EC_EMU2149:
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return PSG_readIO((PSG*)info->psg);
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}
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}
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return 0x00;
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}
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static void psg_reset(void *param)
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{
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ym2610_state *info = (ym2610_state *)param;
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if (info->psg != NULL)
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{
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switch(info->AY_EMU_CORE)
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{
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#ifdef ENABLE_ALL_CORES
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case EC_MAME:
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ay8910_reset_ym(info->psg);
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break;
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#endif
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case EC_EMU2149:
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PSG_reset((PSG*)info->psg);
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break;
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}
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}
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}
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static const ssg_callbacks psgintf =
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{
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psg_set_clock,
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psg_write,
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psg_read,
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psg_reset
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};
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/*------------------------- TM2610 -------------------------------*/
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/* IRQ Handler */
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/*static void IRQHandler(void *param,int irq)
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{
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ym2610_state *info = (ym2610_state *)param;
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//if(info->intf->handler) info->intf->handler(info->device, irq);
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//if(info->intf->handler) info->intf->handler(irq);
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}*/
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/* Timer overflow callback from timer.c */
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/*static TIMER_CALLBACK( timer_callback_0 )
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{
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ym2610_state *info = (ym2610_state *)ptr;
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ym2610_timer_over(info->chip,0);
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}
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static TIMER_CALLBACK( timer_callback_1 )
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{
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ym2610_state *info = (ym2610_state *)ptr;
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ym2610_timer_over(info->chip,1);
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}*/
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/*static void timer_handler(void *param,int c,int count,int clock)
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{
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ym2610_state *info = (ym2610_state *)param;
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if( count == 0 )
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{ // Reset FM Timer
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//timer_enable(info->timer[c], 0);
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}
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else
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{ // Start FM Timer
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//attotime period = attotime_mul(ATTOTIME_IN_HZ(clock), count);
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//if (!timer_enable(info->timer[c], 1))
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// timer_adjust_oneshot(info->timer[c], period, 0);
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}
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}*/
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static stream_sample_t* DUMMYBUF[0x02] = {NULL, NULL};
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/* update request from fm.c */
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void ym2610_update_request(void *param)
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{
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ym2610_state *info = (ym2610_state *)param;
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//stream_update(info->stream);
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ym2610b_update_one(info->chip, DUMMYBUF, 0);
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// Not necessary.
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//if (info->psg != NULL)
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// ay8910_update_one(info->psg, DUMMYBUF, 0);
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}
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//static STREAM_UPDATE( ym2610_stream_update )
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void ym2610_stream_update(void *param, stream_sample_t **outputs, int samples)
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{
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ym2610_state *info = (ym2610_state *)param;
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ym2610_update_one(info->chip, outputs, samples);
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}
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//static STREAM_UPDATE( ym2610b_stream_update )
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void ym2610b_stream_update(void *param, stream_sample_t **outputs, int samples)
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{
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ym2610_state *info = (ym2610_state *)param;
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ym2610b_update_one(info->chip, outputs, samples);
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}
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void ym2610_stream_update_ay(void *param, stream_sample_t **outputs, int samples)
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{
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ym2610_state *info = (ym2610_state *)param;
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if (info->psg != NULL)
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{
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switch(info->AY_EMU_CORE)
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{
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#ifdef ENABLE_ALL_CORES
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case EC_MAME:
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ay8910_update_one(info->psg, outputs, samples);
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break;
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#endif
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case EC_EMU2149:
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PSG_calc_stereo((PSG*)info->psg, outputs, samples);
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break;
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}
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}
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else
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{
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memset(outputs[0], 0x00, samples * sizeof(stream_sample_t));
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memset(outputs[1], 0x00, samples * sizeof(stream_sample_t));
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}
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}
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//static STATE_POSTLOAD( ym2610_intf_postload )
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/*static void ym2610_intf_postload(UINT8 ChipID)
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{
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//ym2610_state *info = (ym2610_state *)param;
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ym2610_state *info = &YM2610Data[ChipID];
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ym2610_postload(info->chip);
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}*/
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//static DEVICE_START( ym2610 )
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int device_start_ym2610(void **_info, int AY_EMU_CORE, int clock, UINT8 AYDisable, int* AYrate, int CHIP_SAMPLING_MODE, int CHIP_SAMPLE_RATE)
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{
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// clock bit 31: 0 - YM2610
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// 1 - YM2610B
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//static const ym2610_interface generic_2610 = { 0 };
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#ifdef ENABLE_ALL_CORES
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static const ay8910_interface generic_ay8910 =
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{
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AY8910_LEGACY_OUTPUT | AY8910_SINGLE_OUTPUT,
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AY8910_DEFAULT_LOADS
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//DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL
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};
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#endif
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//const ym2610_interface *intf = device->static_config ? (const ym2610_interface *)device->static_config : &generic_2610;
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//const ym2610_interface *intf = &generic_2610;
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int rate;
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int ay_clock;
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//void *pcmbufa,*pcmbufb;
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//int pcmsizea,pcmsizeb;
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//ym2610_state *info = get_safe_token(device);
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ym2610_state *info;
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//astring *name = astring_alloc();
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//sound_type type = sound_get_type(device);
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unsigned char ChipType;
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#ifdef ENABLE_ALL_CORES
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if (AY_EMU_CORE >= 0x02)
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AY_EMU_CORE = EC_EMU2149;
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#else
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AY_EMU_CORE = EC_EMU2149;
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#endif
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info = (ym2610_state *) calloc(1, sizeof(ym2610_state));
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*_info = (void *) info;
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info->AY_EMU_CORE = AY_EMU_CORE;
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ChipType = (clock & 0x80000000) ? 0x01 : 0x00;
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clock &= 0x7FFFFFFF;
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rate = clock/72;
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if ((CHIP_SAMPLING_MODE == 0x01 && rate < CHIP_SAMPLE_RATE) ||
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CHIP_SAMPLING_MODE == 0x02)
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rate = CHIP_SAMPLE_RATE;
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//info->intf = intf;
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//info->device = device;
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//info->psg = ay8910_start_ym(NULL, sound_get_type(device), device, device->clock, &generic_ay8910);
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if (! AYDisable)
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{
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ay_clock = clock / 4;
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*AYrate = ay_clock / 8;
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switch(AY_EMU_CORE)
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{
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#ifdef ENABLE_ALL_CORES
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case EC_MAME:
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info->psg = ay8910_start_ym(NULL, CHTYPE_YM2610 + ChipType, ay_clock, &generic_ay8910);
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break;
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#endif
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case EC_EMU2149:
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info->psg = PSG_new(ay_clock, *AYrate);
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if (info->psg == NULL)
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return 0;
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PSG_setVolumeMode((PSG*)info->psg, 1); // YM2149 volume mode
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break;
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}
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}
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else
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{
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info->psg = NULL;
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*AYrate = 0;
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}
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//assert_always(info->psg != NULL, "Error creating YM2610/AY8910 chip");
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/* Timer Handler set */
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//info->timer[0] = timer_alloc(device->machine, timer_callback_0, info);
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//info->timer[1] = timer_alloc(device->machine, timer_callback_1, info);
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/* stream system initialize */
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//info->stream = stream_create(device,0,2,rate,info,(type == SOUND_YM2610) ? ym2610_stream_update : ym2610b_stream_update);
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/* setup adpcm buffers */
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//pcmbufa = device->region;
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//pcmsizea = device->regionbytes;
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//astring_printf(name, "%s.deltat", device->tag);
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//pcmbufb = (void *)(memory_region(device->machine, astring_c(name)));
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//pcmsizeb = memory_region_length(device->machine, astring_c(name));
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//astring_free(name);
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/*if (pcmbufb == NULL || pcmsizeb == 0)
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{
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pcmbufb = pcmbufa;
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pcmsizeb = pcmsizea;
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}*/
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/**** initialize YM2610 ****/
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//info->chip = ym2610_init(info,device,device->clock,rate,
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// pcmbufa,pcmsizea,pcmbufb,pcmsizeb,
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// timer_handler,IRQHandler,&psgintf);
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info->chip = ym2610_init(info, clock & 0x7FFFFFFF, rate, NULL, NULL, &psgintf);
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//assert_always(info->chip != NULL, "Error creating YM2610 chip");
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//state_save_register_postload(device->machine, ym2610_intf_postload, info);
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return rate;
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}
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//static DEVICE_STOP( ym2610 )
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void device_stop_ym2610(void *_info)
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{
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//ym2610_state *info = get_safe_token(device);
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ym2610_state* info = (ym2610_state *)_info;
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ym2610_shutdown(info->chip);
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if (info->psg != NULL)
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{
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switch(info->AY_EMU_CORE)
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{
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#ifdef ENABLE_ALL_CORES
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case EC_MAME:
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ay8910_stop_ym(info->psg);
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break;
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#endif
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case EC_EMU2149:
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PSG_delete((PSG*)info->psg);
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break;
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}
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info->psg = NULL;
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}
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free(info);
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}
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//static DEVICE_RESET( ym2610 )
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void device_reset_ym2610(void *_info)
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{
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//ym2610_state *info = get_safe_token(device);
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ym2610_state* info = (ym2610_state *)_info;
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ym2610_reset_chip(info->chip); // also resets the AY clock
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//psg_reset(info); // already done as a callback in ym2610_reset_chip
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}
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//READ8_DEVICE_HANDLER( ym2610_r )
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UINT8 ym2610_r(void *_info, offs_t offset)
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{
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//ym2610_state *info = get_safe_token(device);
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ym2610_state* info = (ym2610_state *)_info;
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return ym2610_read(info->chip, offset & 3);
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}
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//WRITE8_DEVICE_HANDLER( ym2610_w )
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void ym2610_w(void *_info, offs_t offset, UINT8 data)
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{
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//ym2610_state *info = get_safe_token(device);
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ym2610_state* info = (ym2610_state *)_info;
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ym2610_write(info->chip, offset & 3, data);
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}
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//READ8_DEVICE_HANDLER( ym2610_status_port_a_r )
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UINT8 ym2610_status_port_a_r(void *info, offs_t offset)
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{
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return ym2610_r(info, 0);
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}
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//READ8_DEVICE_HANDLER( ym2610_status_port_b_r )
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UINT8 ym2610_status_port_b_r(void *info, offs_t offset)
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{
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return ym2610_r(info, 2);
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}
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//READ8_DEVICE_HANDLER( ym2610_read_port_r )
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UINT8 ym2610_read_port_r(void *info, offs_t offset)
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{
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return ym2610_r(info, 1);
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}
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//WRITE8_DEVICE_HANDLER( ym2610_control_port_a_w )
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void ym2610_control_port_a_w(void *info, offs_t offset, UINT8 data)
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{
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ym2610_w(info, 0, data);
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}
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//WRITE8_DEVICE_HANDLER( ym2610_control_port_b_w )
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void ym2610_control_port_b_w(void *info, offs_t offset, UINT8 data)
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{
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ym2610_w(info, 2, data);
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}
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//WRITE8_DEVICE_HANDLER( ym2610_data_port_a_w )
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void ym2610_data_port_a_w(void *info, offs_t offset, UINT8 data)
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{
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ym2610_w(info, 1, data);
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}
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//WRITE8_DEVICE_HANDLER( ym2610_data_port_b_w )
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void ym2610_data_port_b_w(void *info, offs_t offset, UINT8 data)
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{
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ym2610_w(info, 3, data);
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}
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void ym2610_write_data_pcmrom(void *_info, UINT8 rom_id, offs_t ROMSize, offs_t DataStart,
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offs_t DataLength, const UINT8* ROMData)
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{
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ym2610_state* info = (ym2610_state *)_info;
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ym2610_write_pcmrom(info->chip, rom_id, ROMSize, DataStart, DataLength, ROMData);
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}
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void ym2610_set_mute_mask(void *_info, UINT32 MuteMaskFM, UINT32 MuteMaskAY)
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{
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ym2610_state* info = (ym2610_state *)_info;
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ym2610_set_mutemask(info->chip, MuteMaskFM);
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if (info->psg != NULL)
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{
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switch(info->AY_EMU_CORE)
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{
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#ifdef ENABLE_ALL_CORES
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case EC_MAME:
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ay8910_set_mute_mask_ym(info->psg, MuteMaskAY);
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break;
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#endif
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case EC_EMU2149:
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PSG_setMask((PSG*)info->psg, MuteMaskAY);
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break;
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}
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}
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}
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/**************************************************************************
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* Generic get_info
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**************************************************************************/
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/*DEVICE_GET_INFO( ym2610 )
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{
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switch (state)
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{
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// --- the following bits of info are returned as 64-bit signed integers ---
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case DEVINFO_INT_TOKEN_BYTES: info->i = sizeof(ym2610_state); break;
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// --- the following bits of info are returned as pointers to data or functions ---
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case DEVINFO_FCT_START: info->start = DEVICE_START_NAME( ym2610 ); break;
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case DEVINFO_FCT_STOP: info->stop = DEVICE_STOP_NAME( ym2610 ); break;
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case DEVINFO_FCT_RESET: info->reset = DEVICE_RESET_NAME( ym2610 ); break;
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// --- the following bits of info are returned as NULL-terminated strings ---
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case DEVINFO_STR_NAME: strcpy(info->s, "YM2610"); break;
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case DEVINFO_STR_FAMILY: strcpy(info->s, "Yamaha FM"); break;
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case DEVINFO_STR_VERSION: strcpy(info->s, "1.0"); break;
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case DEVINFO_STR_SOURCE_FILE: strcpy(info->s, __FILE__); break;
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case DEVINFO_STR_CREDITS: strcpy(info->s, "Copyright Nicola Salmoria and the MAME Team"); break;
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}
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}*/
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/*DEVICE_GET_INFO( ym2610b )
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{
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switch (state)
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{
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// --- the following bits of info are returned as NULL-terminated strings ---
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|
case DEVINFO_STR_NAME: strcpy(info->s, "YM2610B"); break;
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|
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default: DEVICE_GET_INFO_CALL(ym2610); break;
|
|
}
|
|
}*/
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