| 1 |
nishi |
1 |
/* $Id: shiroi_sound_mk_i.c 1 2024-08-28 08:10:28Z nishi $ */
|
|
|
2 |
#include "shiroi_sound_mk_i.h"
|
|
|
3 |
|
|
|
4 |
#include "shiroi.h"
|
|
|
5 |
|
|
|
6 |
extern float audio[];
|
|
|
7 |
extern int16_t incre;
|
|
|
8 |
|
|
|
9 |
void shiroi_sound_mk_i_install(shiroi_t* shiroi, int slot) {
|
|
|
10 |
shiroi->cards[slot].type = SHIROI_SOUND_MARK_I;
|
|
|
11 |
shiroi->cards[slot].soundptr = &shiroi->cards[slot].sound;
|
|
|
12 |
|
|
|
13 |
ay38910_desc_t desc;
|
|
|
14 |
desc.tick_hz = 3 * 1024 * 1024;
|
|
|
15 |
desc.sound_hz = 48000;
|
|
|
16 |
desc.magnitude = 0.5;
|
|
|
17 |
desc.user_data = NULL;
|
|
|
18 |
desc.in_cb = NULL;
|
|
|
19 |
desc.out_cb = NULL;
|
|
|
20 |
desc.type = AY38910_TYPE_8910;
|
|
|
21 |
|
|
|
22 |
ay38910_init(&shiroi->cards[slot].sound.psg, &desc);
|
|
|
23 |
}
|
|
|
24 |
|
|
|
25 |
void shiroi_sound_mk_i(shiroi_t* shiroi) {
|
|
|
26 |
int i;
|
|
|
27 |
|
|
|
28 |
uint16_t io = Z80_GET_ADDR(shiroi->z80_pins);
|
|
|
29 |
uint16_t addr = io & 0xff;
|
|
|
30 |
uint16_t data = (io >> 8) & 0xff;
|
|
|
31 |
|
|
|
32 |
for(i = 0; i < 256 / SHIROI_IO_PORTS; i++) {
|
|
|
33 |
if(shiroi->cards[i].type == SHIROI_SOUND_MARK_I) {
|
|
|
34 |
if(shiroi->z80_pins & Z80_RD) {
|
|
|
35 |
/* I/O Read */
|
|
|
36 |
if(addr == 5) {
|
|
|
37 |
Z80_SET_DATA(shiroi->z80_pins, shiroi->cards[i].type);
|
|
|
38 |
}
|
|
|
39 |
} else if(shiroi->z80_pins & Z80_WR) {
|
|
|
40 |
/* I/O Write */
|
|
|
41 |
if(addr == 3) {
|
|
|
42 |
uint64_t pins;
|
|
|
43 |
pins = AY38910_BDIR | AY38910_BC1;
|
|
|
44 |
AY38910_SET_DATA(pins, data);
|
|
|
45 |
ay38910_iorq(&shiroi->cards[i].sound.psg, pins);
|
|
|
46 |
} else if(addr == 4) {
|
|
|
47 |
uint64_t pins;
|
|
|
48 |
pins = AY38910_BDIR;
|
|
|
49 |
AY38910_SET_DATA(pins, data);
|
|
|
50 |
ay38910_iorq(&shiroi->cards[i].sound.psg, pins);
|
|
|
51 |
}
|
|
|
52 |
}
|
|
|
53 |
}
|
|
|
54 |
}
|
|
|
55 |
}
|
|
|
56 |
|
|
|
57 |
void shiroi_sound_mk_i_tick(shiroi_t* shiroi) {
|
|
|
58 |
int i;
|
|
|
59 |
for(i = 0; i < 256 / SHIROI_IO_PORTS; i++) {
|
|
|
60 |
if(shiroi->cards[i].type == SHIROI_SOUND_MARK_I) {
|
|
|
61 |
if(ay38910_tick(&shiroi->cards[i].sound.psg)) {
|
|
|
62 |
audio[incre++] = shiroi->cards[i].sound.psg.sample;
|
|
|
63 |
if(incre == 480) incre = 0;
|
|
|
64 |
}
|
|
|
65 |
}
|
|
|
66 |
}
|
|
|
67 |
}
|