Subversion Repositories Shiroi

Rev

Rev 19 | Rev 22 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1 nishi 1 
/* $Id: shiroi.c 21 2024-08-31 09:25:21Z nishi $ */
2 
 
3 
#include "shiroi.h"
4 
 
5 
#include "card/shiroi_video_mk_i.h"
7 nishi 6 
#include "card/shiroi_video_mk_ii.h"
1 nishi 7 
#include "card/shiroi_sound_mk_i.h"
8 
#include "card/shiroi_math_mk_i.h"
3 nishi 9 
#include "card/shiroi_text_mk_i.h"
12 nishi 10 
#include "card/shiroi_debug.h"
1 nishi 11 
 
12 
#include <stdio.h>
13 
#include <stdlib.h>
14 
#include <math.h>
12 nishi 15 
#include <time.h>
1 nishi 16 
 
17 
float audio[480];
18 
int16_t incre = 0;
19 
 
20 
void shiroi_play_audio(void* buffer, unsigned int frames) {
21 
	int16_t* d = (int16_t*)buffer;
22 
	int i;
23 
	for(i = 0; i < frames; i++) {
24 
		d[i] = audio[(i + incre >= 480) ? (i + incre - 480) : (i + incre)] * 32767;
25 
	}
26 
}
27 
 
28 
shiroi_card_t* shiroi_get_video_card(shiroi_t* shiroi) {
29 
	int i;
30 
	for(i = 0; i < 256 / SHIROI_IO_PORTS; i++) {
31 
		if(shiroi->cards[i].type == 0) continue;
32 
		if((shiroi->cards[i].type & 0xf0) == SHIROI_VIDEO) return &shiroi->cards[i];
33 
	}
34 
	return NULL;
35 
}
36 
 
37 
shiroi_card_t* shiroi_get_sound_card(shiroi_t* shiroi) {
38 
	int i;
39 
	for(i = 0; i < 256 / SHIROI_IO_PORTS; i++) {
40 
		if(shiroi->cards[i].type == 0) continue;
41 
		if((shiroi->cards[i].type & 0xf0) == SHIROI_SOUND) return &shiroi->cards[i];
42 
	}
43 
	return NULL;
44 
}
45 
 
46 
shiroi_card_t* shiroi_get_math_card(shiroi_t* shiroi) {
47 
	int i;
48 
	for(i = 0; i < 256 / SHIROI_IO_PORTS; i++) {
49 
		if(shiroi->cards[i].type == 0) continue;
3 nishi 50 
		if(shiroi->cards[i].type == SHIROI_MATH_MARK_I) return &shiroi->cards[i];
1 nishi 51 
	}
52 
	return NULL;
53 
}
54 
 
3 nishi 55 
shiroi_card_t* shiroi_get_text_card(shiroi_t* shiroi) {
56 
	int i;
57 
	for(i = 0; i < 256 / SHIROI_IO_PORTS; i++) {
58 
		if(shiroi->cards[i].type == 0) continue;
59 
		if(shiroi->cards[i].type == SHIROI_TEXT_MARK_I) return &shiroi->cards[i];
60 
	}
61 
	return NULL;
62 
}
63 
 
12 nishi 64 
shiroi_card_t* shiroi_get_debug_card(shiroi_t* shiroi) {
65 
	int i;
66 
	for(i = 0; i < 256 / SHIROI_IO_PORTS; i++) {
67 
		if(shiroi->cards[i].type == 0) continue;
68 
		if(shiroi->cards[i].type == SHIROI_DEBUG) return &shiroi->cards[i];
69 
	}
70 
	return NULL;
71 
}
72 
 
1 nishi 73 
void shiroi_init_cards(shiroi_t* shiroi) {
74 
	int i;
75 
	for(i = 0; i < 256 / SHIROI_IO_PORTS; i++) {
76 
		shiroi->cards[i].type = 0;
77 
	}
78 
}
79 
 
80 
void shiroi_install(shiroi_t* shiroi, int slot, int card) {
81 
	if(card == SHIROI_VIDEO_MARK_I) {
82 
		shiroi_video_mk_i_install(shiroi, slot);
7 nishi 83 
	} else if(card == SHIROI_VIDEO_MARK_II) {
84 
		shiroi_video_mk_ii_install(shiroi, slot);
1 nishi 85 
	} else if(card == SHIROI_SOUND_MARK_I) {
86 
		shiroi_sound_mk_i_install(shiroi, slot);
87 
	} else if(card == SHIROI_MATH_MARK_I) {
88 
		shiroi_math_mk_i_install(shiroi, slot);
3 nishi 89 
	} else if(card == SHIROI_TEXT_MARK_I) {
90 
		shiroi_text_mk_i_install(shiroi, slot);
12 nishi 91 
	} else if(card == SHIROI_DEBUG) {
92 
		shiroi_debug_install(shiroi, slot);
1 nishi 93 
	}
94 
}
95 
 
10 nishi 96 
void shiroi_reset_card(shiroi_t* shiroi, int slot) {
97 
	int card = shiroi->cards[slot].type;
98 
	if(card == 0) {
99 
	} else if(card == SHIROI_VIDEO_MARK_I) {
100 
		shiroi_video_mk_i_reset(shiroi, slot);
101 
	} else if(card == SHIROI_VIDEO_MARK_II) {
102 
		shiroi_video_mk_ii_reset(shiroi, slot);
103 
	} else if(card == SHIROI_SOUND_MARK_I) {
104 
		shiroi_sound_mk_i_reset(shiroi, slot);
105 
	} else if(card == SHIROI_MATH_MARK_I) {
106 
		shiroi_math_mk_i_reset(shiroi, slot);
107 
	} else if(card == SHIROI_TEXT_MARK_I) {
108 
		shiroi_text_mk_i_reset(shiroi, slot);
12 nishi 109 
	} else if(card == SHIROI_DEBUG) {
110 
		shiroi_debug_reset(shiroi, slot);
10 nishi 111 
	}
112 
}
113 
 
1 nishi 114 
void shiroi_init(shiroi_t* shiroi) {
115 
	shiroi->z80_pins = z80_init(&shiroi->z80);
116 
	shiroi->stop = false;
10 nishi 117 
	shiroi->reset = false;
1 nishi 118 
	shiroi->play_audio = shiroi_play_audio;
119 
 
120 
	int i;
121 
 
122 
	for(i = 0; i < 480; i++) {
123 
		audio[i] = 0;
124 
	}
125 
}
126 
 
127 
void shiroi_loop(shiroi_t* shiroi) {
128 
	int x = 0;
129 
	int y = 0;
12 nishi 130 
#ifdef ACCURATE_CLOCK
19 nishi 131 
	double hz = 1000000000.0 / (20 * 1024 * 1024);
12 nishi 132 
	struct timespec deadline;
133 
#endif
11 nishi 134 
	while(!shiroi->stop || shiroi->reset) {
10 nishi 135 
		if(shiroi->reset) {
136 
			z80_reset(&shiroi->z80);
137 
			int i;
138 
			for(i = 0; i < 256 / SHIROI_IO_PORTS; i++) {
139 
				shiroi_reset_card(shiroi, i);
140 
			}
141 
			shiroi->reset = false;
11 nishi 142 
			incre = 0;
143 
			for(i = 0; i < 480; i++) audio[i] = 0;
144 
			continue;
10 nishi 145 
		}
12 nishi 146 
#ifdef ACCURATE_CLOCK
147 
		clock_gettime(CLOCK_MONOTONIC, &deadline);
148 
		deadline.tv_nsec += hz;
149 
		if(deadline.tv_nsec >= 1000000000) {
150 
			deadline.tv_nsec -= 1000000000;
151 
			deadline.tv_sec++;
152 
		}
153 
#endif
1 nishi 154 
		shiroi->z80_pins = z80_tick(&shiroi->z80, shiroi->z80_pins);
155 
		if(shiroi->z80_pins & Z80_MREQ) {
156 
			uint16_t addr = Z80_GET_ADDR(shiroi->z80_pins);
157 
			if(shiroi->z80_pins & Z80_RD) {
158 
				uint8_t data = shiroi->ram[addr];
159 
				Z80_SET_DATA(shiroi->z80_pins, data);
160 
			} else if(shiroi->z80_pins & Z80_WR) {
3 nishi 161 
				if(addr >= 0x8000) {
162 
					uint8_t data = Z80_GET_DATA(shiroi->z80_pins);
163 
					shiroi->ram[addr] = data;
164 
				}
1 nishi 165 
			}
166 
		} else if(shiroi->z80_pins & Z80_IORQ) {
167 
			uint16_t io = Z80_GET_ADDR(shiroi->z80_pins);
168 
			uint16_t addr = io & 0xff;
169 
			uint16_t data = (io >> 8) & 0xff;
170 
 
171 
			if(shiroi->z80_pins & Z80_M1) {
172 
			} else {
21 nishi 173 
				if(addr == 0x80) printf("%d\n", data);
1 nishi 174 
				shiroi_video_mk_i(shiroi);
7 nishi 175 
				shiroi_video_mk_ii(shiroi);
1 nishi 176 
				shiroi_sound_mk_i(shiroi);
177 
				shiroi_math_mk_i(shiroi);
3 nishi 178 
				shiroi_text_mk_i(shiroi);
12 nishi 179 
				shiroi_debug(shiroi);
1 nishi 180 
			}
181 
		}
182 
 
183 
		shiroi_video_mk_i_tick(shiroi);
7 nishi 184 
		shiroi_video_mk_ii_tick(shiroi);
1 nishi 185 
		shiroi_sound_mk_i_tick(shiroi);
186 
		shiroi_math_mk_i_tick(shiroi);
3 nishi 187 
		shiroi_text_mk_i_tick(shiroi);
12 nishi 188 
		shiroi_debug_tick(shiroi);
189 
#ifdef ACCURATE_CLOCK
190 
		clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &deadline, NULL);
191 
#endif
1 nishi 192 
	}
193 
}