568 lines
14 KiB
C
568 lines
14 KiB
C
/*********************************************************
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Konami 053260 PCM Sound Chip
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*********************************************************/
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#include "mamedef.h"
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//#include "emu.h"
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#ifdef _DEBUG
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#include <stdio.h>
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include "k053260.h"
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#ifndef NULL
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#define NULL ((void *)0)
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#endif
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/* 2004-02-28: Fixed PPCM decoding. Games sound much better now.*/
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#define LOG 0
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#define BASE_SHIFT 16
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typedef struct _k053260_channel k053260_channel;
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struct _k053260_channel
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{
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UINT32 rate;
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UINT32 size;
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UINT32 start;
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UINT32 bank;
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UINT32 volume;
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int play;
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UINT32 pan;
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UINT32 pos;
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int loop;
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int ppcm; /* packed PCM ( 4 bit signed ) */
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int ppcm_data;
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UINT8 Muted;
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};
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typedef struct _k053260_state k053260_state;
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struct _k053260_state
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{
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//sound_stream * channel;
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int mode;
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int regs[0x30];
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UINT8 *rom;
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//int rom_size;
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UINT32 rom_size;
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UINT32 *delta_table;
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k053260_channel channels[4];
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//const k053260_interface *intf;
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//device_t *device;
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};
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/*INLINE k053260_state *get_safe_token(device_t *device)
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{
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assert(device != NULL);
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assert(device->type() == K053260);
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return (k053260_state *)downcast<legacy_device_base *>(device)->token();
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}*/
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static void InitDeltaTable( k053260_state *ic, int rate, int clock )
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{
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int i;
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double base = ( double )rate;
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double max = (double)(clock); /* Hz */
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UINT32 val;
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for( i = 0; i < 0x1000; i++ ) {
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double v = ( double )( 0x1000 - i );
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double target = (max) / v;
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double fixed = ( double )( 1 << BASE_SHIFT );
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if ( target && base ) {
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target = fixed / ( base / target );
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val = ( UINT32 )target;
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if ( val == 0 )
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val = 1;
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} else
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val = 1;
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ic->delta_table[i] = val;
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}
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}
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//static DEVICE_RESET( k053260 )
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void device_reset_k053260(void *_info)
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{
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//k053260_state *ic = get_safe_token(device);
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k053260_state *ic = (k053260_state *)_info;
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int i;
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for( i = 0; i < 4; i++ ) {
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ic->channels[i].rate = 0;
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ic->channels[i].size = 0;
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ic->channels[i].start = 0;
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ic->channels[i].bank = 0;
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ic->channels[i].volume = 0;
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ic->channels[i].play = 0;
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ic->channels[i].pan = 0;
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ic->channels[i].pos = 0;
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ic->channels[i].loop = 0;
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ic->channels[i].ppcm = 0;
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ic->channels[i].ppcm_data = 0;
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}
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}
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INLINE int limit( int val, int max, int min )
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{
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if ( val > max )
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val = max;
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else if ( val < min )
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val = min;
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return val;
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}
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//#define MAXOUT 0x7fff
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#define MAXOUT +0x8000
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#define MINOUT -0x8000
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//static STREAM_UPDATE( k053260_update )
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void k053260_update(void *param, stream_sample_t **outputs, int samples)
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{
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static const INT8 dpcmcnv[] = { 0,1,2,4,8,16,32,64, -128, -64, -32, -16, -8, -4, -2, -1};
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int i, j, lvol[4], rvol[4], play[4], loop[4], ppcm[4];
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UINT8 *rom[4];
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UINT32 delta[4], end[4], pos[4];
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INT8 ppcm_data[4];
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int dataL, dataR;
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INT8 d;
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k053260_state *ic = (k053260_state *)param;
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/* precache some values */
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for ( i = 0; i < 4; i++ ) {
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if (ic->channels[i].Muted)
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{
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play[i] = 0;
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continue;
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}
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rom[i]= &ic->rom[ic->channels[i].start + ( ic->channels[i].bank << 16 )];
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delta[i] = ic->delta_table[ic->channels[i].rate];
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lvol[i] = ic->channels[i].volume * ic->channels[i].pan;
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rvol[i] = ic->channels[i].volume * ( 8 - ic->channels[i].pan );
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end[i] = ic->channels[i].size;
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pos[i] = ic->channels[i].pos;
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play[i] = ic->channels[i].play;
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loop[i] = ic->channels[i].loop;
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ppcm[i] = ic->channels[i].ppcm;
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ppcm_data[i] = ic->channels[i].ppcm_data;
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if ( ppcm[i] )
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delta[i] /= 2;
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}
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for ( j = 0; j < samples; j++ ) {
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dataL = dataR = 0;
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for ( i = 0; i < 4; i++ ) {
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/* see if the voice is on */
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if ( play[i] ) {
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/* see if we're done */
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if ( ( pos[i] >> BASE_SHIFT ) >= end[i] ) {
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ppcm_data[i] = 0;
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if ( loop[i] )
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pos[i] = 0;
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else {
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play[i] = 0;
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continue;
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}
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}
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if ( ppcm[i] ) { /* Packed PCM */
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/* we only update the signal if we're starting or a real sound sample has gone by */
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/* this is all due to the dynamic sample rate convertion */
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if ( pos[i] == 0 || ( ( pos[i] ^ ( pos[i] - delta[i] ) ) & 0x8000 ) == 0x8000 )
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{
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int newdata;
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if ( pos[i] & 0x8000 ){
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newdata = ((rom[i][pos[i] >> BASE_SHIFT]) >> 4) & 0x0f; /*high nybble*/
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}
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else{
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newdata = ( ( rom[i][pos[i] >> BASE_SHIFT] ) ) & 0x0f; /*low nybble*/
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}
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/*ppcm_data[i] = (( ( ppcm_data[i] * 62 ) >> 6 ) + dpcmcnv[newdata]);
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if ( ppcm_data[i] > 127 )
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ppcm_data[i] = 127;
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else
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if ( ppcm_data[i] < -128 )
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ppcm_data[i] = -128;*/
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ppcm_data[i] += dpcmcnv[newdata];
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}
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d = ppcm_data[i];
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pos[i] += delta[i];
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} else { /* PCM */
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d = rom[i][pos[i] >> BASE_SHIFT];
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pos[i] += delta[i];
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}
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if ( ic->mode & 2 ) {
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dataL += ( d * lvol[i] ) >> 2;
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dataR += ( d * rvol[i] ) >> 2;
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}
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}
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}
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outputs[1][j] = limit( dataL, MAXOUT, MINOUT );
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outputs[0][j] = limit( dataR, MAXOUT, MINOUT );
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}
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/* update the regs now */
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for ( i = 0; i < 4; i++ ) {
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if (ic->channels[i].Muted)
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continue;
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ic->channels[i].pos = pos[i];
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ic->channels[i].play = play[i];
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ic->channels[i].ppcm_data = ppcm_data[i];
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}
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}
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//static DEVICE_START( k053260 )
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int device_start_k053260(void **_info, int clock)
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{
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//static const k053260_interface defintrf = { 0 };
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//k053260_state *ic = get_safe_token(device);
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k053260_state *ic;
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//int rate = device->clock() / 32;
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int rate = clock / 32;
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int i;
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ic = (k053260_state *) calloc(1, sizeof(k053260_state));
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*_info = (void *) ic;
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/* Initialize our chip structure */
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//ic->device = device;
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//ic->intf = (device->static_config() != NULL) ? (const k053260_interface *)device->static_config() : &defintrf;
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ic->mode = 0;
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//const memory_region *region = (ic->intf->rgnoverride != NULL) ? device->machine().region(ic->intf->rgnoverride) : device->region();
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//ic->rom = *region;
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//ic->rom_size = region->bytes();
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ic->rom = NULL;
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ic->rom_size = 0x00;
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// has to be done by the player after calling device_start
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//DEVICE_RESET_CALL(k053260);
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for ( i = 0; i < 0x30; i++ )
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ic->regs[i] = 0;
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//ic->delta_table = auto_alloc_array( device->machine(), UINT32, 0x1000 );
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ic->delta_table = (UINT32*)malloc(0x1000 * sizeof(UINT32));
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//ic->channel = device->machine().sound().stream_alloc( *device, 0, 2, rate, ic, k053260_update );
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//InitDeltaTable( ic, rate, device->clock() );
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InitDeltaTable( ic, rate, clock );
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/* register with the save state system */
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/*device->save_item(NAME(ic->mode));
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device->save_item(NAME(ic->regs));
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for ( i = 0; i < 4; i++ )
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{
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device->save_item(NAME(ic->channels[i].rate), i);
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device->save_item(NAME(ic->channels[i].size), i);
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device->save_item(NAME(ic->channels[i].start), i);
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device->save_item(NAME(ic->channels[i].bank), i);
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device->save_item(NAME(ic->channels[i].volume), i);
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device->save_item(NAME(ic->channels[i].play), i);
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device->save_item(NAME(ic->channels[i].pan), i);
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device->save_item(NAME(ic->channels[i].pos), i);
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device->save_item(NAME(ic->channels[i].loop), i);
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device->save_item(NAME(ic->channels[i].ppcm), i);
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device->save_item(NAME(ic->channels[i].ppcm_data), i);
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}*/
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/* setup SH1 timer if necessary */
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//if ( ic->intf->irq )
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// device->machine().scheduler().timer_pulse( attotime::from_hz(device->clock()) * 32, ic->intf->irq, "ic->intf->irq" );
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for (i = 0; i < 4; i ++)
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ic->channels[i].Muted = 0x00;
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return rate;
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}
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void device_stop_k053260(void *_info)
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{
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k053260_state *ic = (k053260_state *)_info;
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free(ic->delta_table);
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free(ic->rom); ic->rom = NULL;
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free(ic);
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return;
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}
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INLINE void check_bounds( k053260_state *ic, int channel )
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{
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int channel_start = ( ic->channels[channel].bank << 16 ) + ic->channels[channel].start;
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int channel_end = channel_start + ic->channels[channel].size - 1;
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if ( channel_start > ic->rom_size ) {
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#ifdef _DEBUG
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logerror("K53260: Attempting to start playing past the end of the ROM ( start = %06x, end = %06x ).\n", channel_start, channel_end );
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#endif
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ic->channels[channel].play = 0;
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return;
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}
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if ( channel_end > ic->rom_size ) {
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#ifdef _DEBUG
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logerror("K53260: Attempting to play past the end of the ROM ( start = %06x, end = %06x ).\n", channel_start, channel_end );
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#endif
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ic->channels[channel].size = ic->rom_size - channel_start;
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}
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#ifdef _DEBUG
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if (LOG) logerror("K053260: Sample Start = %06x, Sample End = %06x, Sample rate = %04x, PPCM = %s\n", channel_start, channel_end, ic->channels[channel].rate, ic->channels[channel].ppcm ? "yes" : "no" );
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#endif
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}
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//WRITE8_DEVICE_HANDLER( k053260_w )
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void k053260_w(void *_info, offs_t offset, UINT8 data)
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{
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int i, t;
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int r = offset;
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int v = data;
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//k053260_state *ic = get_safe_token(device);
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k053260_state *ic = (k053260_state *)_info;
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if ( r > 0x2f ) {
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#ifdef _DEBUG
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logerror("K053260: Writing past registers\n" );
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#endif
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return;
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}
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//ic->channel->update();
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/* before we update the regs, we need to check for a latched reg */
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if ( r == 0x28 ) {
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t = ic->regs[r] ^ v;
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for ( i = 0; i < 4; i++ ) {
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if ( t & ( 1 << i ) ) {
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if ( v & ( 1 << i ) ) {
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ic->channels[i].play = 1;
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ic->channels[i].pos = 0;
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ic->channels[i].ppcm_data = 0;
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check_bounds( ic, i );
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} else
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ic->channels[i].play = 0;
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}
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}
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ic->regs[r] = v;
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return;
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}
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/* update regs */
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ic->regs[r] = v;
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/* communication registers */
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if ( r < 8 )
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return;
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/* channel setup */
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if ( r < 0x28 ) {
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int channel = ( r - 8 ) / 8;
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switch ( ( r - 8 ) & 0x07 ) {
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case 0: /* sample rate low */
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ic->channels[channel].rate &= 0x0f00;
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ic->channels[channel].rate |= v;
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break;
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case 1: /* sample rate high */
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ic->channels[channel].rate &= 0x00ff;
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ic->channels[channel].rate |= ( v & 0x0f ) << 8;
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break;
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case 2: /* size low */
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ic->channels[channel].size &= 0xff00;
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ic->channels[channel].size |= v;
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break;
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case 3: /* size high */
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ic->channels[channel].size &= 0x00ff;
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ic->channels[channel].size |= v << 8;
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break;
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case 4: /* start low */
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ic->channels[channel].start &= 0xff00;
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ic->channels[channel].start |= v;
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break;
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case 5: /* start high */
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ic->channels[channel].start &= 0x00ff;
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ic->channels[channel].start |= v << 8;
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break;
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case 6: /* bank */
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ic->channels[channel].bank = v & 0xff;
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break;
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case 7: /* volume is 7 bits. Convert to 8 bits now. */
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ic->channels[channel].volume = ( ( v & 0x7f ) << 1 ) | ( v & 1 );
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break;
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}
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return;
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}
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switch( r ) {
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case 0x2a: /* loop, ppcm */
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for ( i = 0; i < 4; i++ )
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ic->channels[i].loop = ( v & ( 1 << i ) ) != 0;
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for ( i = 4; i < 8; i++ )
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ic->channels[i-4].ppcm = ( v & ( 1 << i ) ) != 0;
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break;
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case 0x2c: /* pan */
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ic->channels[0].pan = v & 7;
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ic->channels[1].pan = ( v >> 3 ) & 7;
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break;
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case 0x2d: /* more pan */
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ic->channels[2].pan = v & 7;
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ic->channels[3].pan = ( v >> 3 ) & 7;
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break;
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case 0x2f: /* control */
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ic->mode = v & 7;
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/* bit 0 = read ROM */
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/* bit 1 = enable sound output */
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/* bit 2 = unknown */
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break;
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}
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}
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//READ8_DEVICE_HANDLER( k053260_r )
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UINT8 k053260_r(void *_info, offs_t offset)
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{
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//k053260_state *ic = get_safe_token(device);
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k053260_state *ic = (k053260_state *)_info;
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switch ( offset ) {
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case 0x29: /* channel status */
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{
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int i, status = 0;
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for ( i = 0; i < 4; i++ )
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status |= ic->channels[i].play << i;
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return status;
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}
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break;
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case 0x2e: /* read ROM */
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if ( ic->mode & 1 )
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{
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UINT32 offs = ic->channels[0].start + ( ic->channels[0].pos >> BASE_SHIFT ) + ( ic->channels[0].bank << 16 );
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ic->channels[0].pos += ( 1 << 16 );
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if ( offs > ic->rom_size ) {
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//logerror("%s: K53260: Attempting to read past ROM size in ROM Read Mode (offs = %06x, size = %06x).\n", device->machine().describe_context(),offs,ic->rom_size );
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#ifdef _DEBUG
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logerror("K53260: Attempting to read past ROM size in ROM Read Mode (offs = %06x, size = %06x).\n", offs,ic->rom_size );
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#endif
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return 0;
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}
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return ic->rom[offs];
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}
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break;
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}
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return ic->regs[offset];
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}
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void k053260_write_rom(void *_info, offs_t ROMSize, offs_t DataStart, offs_t DataLength,
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const UINT8* ROMData)
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{
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k053260_state *info = (k053260_state *)_info;
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if (info->rom_size != ROMSize)
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{
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info->rom = (UINT8*)realloc(info->rom, ROMSize);
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info->rom_size = ROMSize;
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memset(info->rom, 0xFF, ROMSize);
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}
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if (DataStart > ROMSize)
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return;
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if (DataStart + DataLength > ROMSize)
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DataLength = ROMSize - DataStart;
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|
|
memcpy(info->rom + DataStart, ROMData, DataLength);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
void k053260_set_mute_mask(void *_info, UINT32 MuteMask)
|
|
{
|
|
k053260_state *info = (k053260_state *)_info;
|
|
UINT8 CurChn;
|
|
|
|
for (CurChn = 0; CurChn < 4; CurChn ++)
|
|
info->channels[CurChn].Muted = (MuteMask >> CurChn) & 0x01;
|
|
|
|
return;
|
|
}
|
|
|
|
/**************************************************************************
|
|
* Generic get_info
|
|
**************************************************************************/
|
|
|
|
/*DEVICE_GET_INFO( k053260 )
|
|
{
|
|
switch (state)
|
|
{
|
|
// --- the following bits of info are returned as 64-bit signed integers --- //
|
|
case DEVINFO_INT_TOKEN_BYTES: info->i = sizeof(k053260_state); break;
|
|
|
|
// --- the following bits of info are returned as pointers to data or functions --- //
|
|
case DEVINFO_FCT_START: info->start = DEVICE_START_NAME( k053260 ); break;
|
|
case DEVINFO_FCT_STOP: // nothing // break;
|
|
case DEVINFO_FCT_RESET: info->reset = DEVICE_RESET_NAME( k053260 ); break;
|
|
|
|
// --- the following bits of info are returned as NULL-terminated strings --- //
|
|
case DEVINFO_STR_NAME: strcpy(info->s, "K053260"); break;
|
|
case DEVINFO_STR_FAMILY: strcpy(info->s, "Konami custom"); break;
|
|
case DEVINFO_STR_VERSION: strcpy(info->s, "1.0"); break;
|
|
case DEVINFO_STR_SOURCE_FILE: strcpy(info->s, __FILE__); break;
|
|
case DEVINFO_STR_CREDITS: strcpy(info->s, "Copyright Nicola Salmoria and the MAME Team"); break;
|
|
}
|
|
}
|
|
|
|
|
|
DEFINE_LEGACY_SOUND_DEVICE(K053260, k053260);*/
|