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nishi |
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/* $Id: shiroi_sound_mk_i.c 10 2024-08-29 01:39:27Z nishi $ */
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#include "shiroi_sound_mk_i.h"
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#include "shiroi.h"
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extern float audio[];
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extern int16_t incre;
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void shiroi_sound_mk_i_install(shiroi_t* shiroi, int slot) {
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shiroi->cards[slot].type = SHIROI_SOUND_MARK_I;
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shiroi->cards[slot].soundptr = &shiroi->cards[slot].sound;
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ay38910_desc_t desc;
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desc.tick_hz = 3 * 1024 * 1024;
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desc.sound_hz = 48000;
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desc.magnitude = 0.5;
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desc.user_data = NULL;
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desc.in_cb = NULL;
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desc.out_cb = NULL;
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desc.type = AY38910_TYPE_8910;
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ay38910_init(&shiroi->cards[slot].sound.psg, &desc);
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}
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nishi |
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void shiroi_sound_mk_i_reset(shiroi_t* shiroi, int slot) { ay38910_reset(&shiroi->cards[slot].sound.psg); }
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nishi |
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void shiroi_sound_mk_i(shiroi_t* shiroi) {
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int i;
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uint16_t io = Z80_GET_ADDR(shiroi->z80_pins);
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uint16_t addr = io & 0xff;
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uint16_t data = (io >> 8) & 0xff;
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for(i = 0; i < 256 / SHIROI_IO_PORTS; i++) {
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if(shiroi->cards[i].type == SHIROI_SOUND_MARK_I) {
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if(shiroi->z80_pins & Z80_RD) {
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/* I/O Read */
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if(addr == 5) {
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Z80_SET_DATA(shiroi->z80_pins, shiroi->cards[i].type);
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}
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} else if(shiroi->z80_pins & Z80_WR) {
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/* I/O Write */
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if(addr == 3) {
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uint64_t pins;
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pins = AY38910_BDIR | AY38910_BC1;
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AY38910_SET_DATA(pins, data);
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ay38910_iorq(&shiroi->cards[i].sound.psg, pins);
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} else if(addr == 4) {
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uint64_t pins;
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pins = AY38910_BDIR;
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AY38910_SET_DATA(pins, data);
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ay38910_iorq(&shiroi->cards[i].sound.psg, pins);
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}
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}
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}
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}
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}
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void shiroi_sound_mk_i_tick(shiroi_t* shiroi) {
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int i;
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for(i = 0; i < 256 / SHIROI_IO_PORTS; i++) {
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if(shiroi->cards[i].type == SHIROI_SOUND_MARK_I) {
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if(ay38910_tick(&shiroi->cards[i].sound.psg)) {
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audio[incre++] = shiroi->cards[i].sound.psg.sample;
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if(incre == 480) incre = 0;
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}
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}
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}
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}
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