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/* $Id: shiroi.c 10 2024-08-29 01:39:27Z nishi $ */
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#include "shiroi.h"
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#include "card/shiroi_video_mk_i.h"
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#include "card/shiroi_video_mk_ii.h"
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#include "card/shiroi_sound_mk_i.h"
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#include "card/shiroi_math_mk_i.h"
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#include "card/shiroi_text_mk_i.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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float audio[480];
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int16_t incre = 0;
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void shiroi_play_audio(void* buffer, unsigned int frames) {
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int16_t* d = (int16_t*)buffer;
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int i;
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for(i = 0; i < frames; i++) {
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d[i] = audio[(i + incre >= 480) ? (i + incre - 480) : (i + incre)] * 32767;
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}
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}
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shiroi_card_t* shiroi_get_video_card(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 == 0) continue;
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if((shiroi->cards[i].type & 0xf0) == SHIROI_VIDEO) return &shiroi->cards[i];
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}
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return NULL;
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}
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shiroi_card_t* shiroi_get_sound_card(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 == 0) continue;
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if((shiroi->cards[i].type & 0xf0) == SHIROI_SOUND) return &shiroi->cards[i];
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}
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return NULL;
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}
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shiroi_card_t* shiroi_get_math_card(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 == 0) continue;
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if(shiroi->cards[i].type == SHIROI_MATH_MARK_I) return &shiroi->cards[i];
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}
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return NULL;
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}
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shiroi_card_t* shiroi_get_text_card(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 == 0) continue;
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if(shiroi->cards[i].type == SHIROI_TEXT_MARK_I) return &shiroi->cards[i];
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}
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return NULL;
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}
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void shiroi_init_cards(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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shiroi->cards[i].type = 0;
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}
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}
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void shiroi_install(shiroi_t* shiroi, int slot, int card) {
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if(card == SHIROI_VIDEO_MARK_I) {
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shiroi_video_mk_i_install(shiroi, slot);
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} else if(card == SHIROI_VIDEO_MARK_II) {
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shiroi_video_mk_ii_install(shiroi, slot);
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} else if(card == SHIROI_SOUND_MARK_I) {
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shiroi_sound_mk_i_install(shiroi, slot);
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} else if(card == SHIROI_MATH_MARK_I) {
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shiroi_math_mk_i_install(shiroi, slot);
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} else if(card == SHIROI_TEXT_MARK_I) {
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shiroi_text_mk_i_install(shiroi, slot);
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}
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}
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void shiroi_reset_card(shiroi_t* shiroi, int slot) {
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int card = shiroi->cards[slot].type;
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if(card == 0) {
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} else if(card == SHIROI_VIDEO_MARK_I) {
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shiroi_video_mk_i_reset(shiroi, slot);
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} else if(card == SHIROI_VIDEO_MARK_II) {
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shiroi_video_mk_ii_reset(shiroi, slot);
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} else if(card == SHIROI_SOUND_MARK_I) {
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shiroi_sound_mk_i_reset(shiroi, slot);
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} else if(card == SHIROI_MATH_MARK_I) {
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shiroi_math_mk_i_reset(shiroi, slot);
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} else if(card == SHIROI_TEXT_MARK_I) {
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shiroi_text_mk_i_reset(shiroi, slot);
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}
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}
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void shiroi_init(shiroi_t* shiroi) {
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shiroi->z80_pins = z80_init(&shiroi->z80);
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shiroi->stop = false;
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shiroi->reset = false;
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shiroi->play_audio = shiroi_play_audio;
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int i;
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for(i = 0; i < 480; i++) {
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audio[i] = 0;
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}
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}
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void shiroi_loop(shiroi_t* shiroi) {
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int x = 0;
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int y = 0;
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while(!shiroi->stop) {
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if(shiroi->reset) {
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z80_reset(&shiroi->z80);
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int i;
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for(i = 0; i < 256 / SHIROI_IO_PORTS; i++) {
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shiroi_reset_card(shiroi, i);
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}
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shiroi->reset = false;
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}
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shiroi->z80_pins = z80_tick(&shiroi->z80, shiroi->z80_pins);
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if(shiroi->z80_pins & Z80_MREQ) {
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uint16_t addr = Z80_GET_ADDR(shiroi->z80_pins);
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if(shiroi->z80_pins & Z80_RD) {
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uint8_t data = shiroi->ram[addr];
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Z80_SET_DATA(shiroi->z80_pins, data);
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} else if(shiroi->z80_pins & Z80_WR) {
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if(addr >= 0x8000) {
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uint8_t data = Z80_GET_DATA(shiroi->z80_pins);
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shiroi->ram[addr] = data;
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}
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}
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} else if(shiroi->z80_pins & Z80_IORQ) {
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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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if(shiroi->z80_pins & Z80_M1) {
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} else {
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shiroi_video_mk_i(shiroi);
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shiroi_video_mk_ii(shiroi);
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shiroi_sound_mk_i(shiroi);
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shiroi_math_mk_i(shiroi);
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shiroi_text_mk_i(shiroi);
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}
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}
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shiroi_video_mk_i_tick(shiroi);
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shiroi_video_mk_ii_tick(shiroi);
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shiroi_sound_mk_i_tick(shiroi);
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shiroi_math_mk_i_tick(shiroi);
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shiroi_text_mk_i_tick(shiroi);
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}
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}
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