int coleco_init(int video_system) {
int i;
float tmp;
int region = SMS_REGION_EXPORT;
if(video_system == SMS_VIDEO_NTSC) {
tmp = NTSC_Z80_CLOCK / PSG_DIVISOR / NTSC_FPS / NTSC_LINES_PER_FRAME /
NTSC_CLOCKS_PER_SAMPLE;
for(i = 0; i < NTSC_LINES_PER_FRAME; ++i) {
psg_samples[i] = (uint32) (tmp * (i + 1)) -
(uint32) (tmp * i);
}
/* We end up generating 734 samples per frame @ 44100 Hz, 60fps, but we
need 735. */
psg_samples[261] += 1;
region |= SMS_VIDEO_NTSC;
sn76489_init(&psg, NTSC_Z80_CLOCK, 44100.0f,
SN76489_NOISE_BITS_NORMAL, SN76489_NOISE_TAPPED_NORMAL);
}
else {
tmp = PAL_Z80_CLOCK / PSG_DIVISOR / PAL_FPS / PAL_LINES_PER_FRAME /
PAL_CLOCKS_PER_SAMPLE;
for(i = 0; i < PAL_LINES_PER_FRAME; ++i) {
psg_samples[i] = (uint32) (tmp * (i + 1)) -
(uint32) (tmp * i);
}
/* We need 882 samples per frame @ 44100 Hz, 50fps. */
region |= SMS_VIDEO_PAL;
sn76489_init(&psg, PAL_Z80_CLOCK, 44100.0f,
SN76489_NOISE_BITS_NORMAL, SN76489_NOISE_TAPPED_NORMAL);
}
sms_region = region;
gui_set_console((console_t *)&colecovision_cons);
coleco_mem_init();
sms_vdp_init(video_system, 0);
sms_z80_init();
sound_init(2, video_system);
sms_z80_set_pread(&coleco_port_read);
sms_z80_set_pwrite(&coleco_port_write);
cycles_run = cycles_to_run = scanline = 0;
colecovision_cons._base.initialized = 1;
return 0;
}
void *pssj_init(const device_t *info)
{
pssj_t *pssj = malloc(sizeof(pssj_t));
memset(pssj, 0, sizeof(pssj_t));
sn76489_init(&pssj->sn76489, 0x00c0, 0x0004, PSSJ, 3579545);
io_sethandler(0x00C4, 0x0004, pssj_read, NULL, NULL, pssj_write, NULL, NULL, pssj);
timer_add(pssj_callback, &pssj->timer_count, &pssj->enable, pssj);
sound_add_handler(pssj_get_buffer, pssj);
return pssj;
}
