int senjyo_sh_start(const struct MachineSound *msound)
{
int i;
channel = mixer_allocate_channel(15);
mixer_set_name(channel,"Tone");
/* z80 ctc init */
ctc_intf.baseclock[0] = Machine->drv->cpu[1].cpu_clock;
z80ctc_init (&ctc_intf);
/* z80 pio init */
z80pio_init (&pio_intf);
if ((_single = (signed char *)malloc(SINGLE_LENGTH)) == 0)
{
free(_single);
return 1;
}
for (i = 0;i < SINGLE_LENGTH;i++) /* freq = ctc2 zco / 8 */
_single[i] = ((i/SINGLE_DIVIDER)&0x01)*127;
/* CTC2 single tone generator */
mixer_set_volume(channel,0);
mixer_play_sample(channel,_single,SINGLE_LENGTH,single_rate,1);
return 0;
}
static MACHINE_RESET( super8 )
{
/* reset PIO */
z80pio_init(0, &z80pio_intf);
z80pio_reset(0);
keyboard_scan();
/* enable ROM in base >0000, and re-enable RAM shortly thereafter */
memory_set_bankptr(1, memory_region(REGION_CPU1) + 0xC000);
timer_set(TIME_IN_USEC(10), 0, reset_timer_callback);
}
void senjyo_sh_start(void)
{
int i;
/* z80 ctc init */
ctc_intf.baseclock = Machine->drv->cpu[1].cpu_clock;
z80ctc_init (0, &ctc_intf);
/* z80 pio init */
z80pio_init (0, &pio_intf);
_single = (INT16 *)auto_malloc(SINGLE_LENGTH*2);
for (i = 0;i < SINGLE_LENGTH;i++) /* freq = ctc2 zco / 8 */
_single[i] = ((i/SINGLE_DIVIDER)&0x01)*127*256;
/* CTC2 single tone generator */
sample_set_volume(0,0);
sample_start_raw(0,_single,SINGLE_LENGTH,single_rate,1);
timer_pulse(TIME_IN_HZ(Machine->refresh_rate), 0, senjyo_sh_update);
}
void senjyo_sh_start(void)
{
int i;
/* z80 ctc init */
ctc_intf.baseclock = cpunum_get_clock(1);
z80ctc_init (0, &ctc_intf);
/* z80 pio init */
z80pio_init (0, &pio_intf);
_single = (INT16 *)auto_malloc(SINGLE_LENGTH*2);
for (i = 0;i < SINGLE_LENGTH;i++) /* freq = ctc2 zco / 8 */
_single[i] = ((i/SINGLE_DIVIDER)&0x01)*127*256;
/* CTC2 single tone generator */
sample_set_volume(0,0);
sample_start_raw(0,_single,SINGLE_LENGTH,single_rate,1);
timer_pulse(video_screen_get_frame_period(Machine->primary_screen), NULL, 0, senjyo_sh_update);
}
int starforc_sh_start(void)
{
int i;
if (SN76496_sh_start(&interface) != 0)
return 1;
/* z80 ctc init */
ctc_intf.baseclock[0] = Machine->drv->cpu[1].cpu_clock;
z80ctc_init (&ctc_intf);
/* z80 pio init */
z80pio_init (&pio_intf);
/* setup daisy chain connection */
{
static Z80_DaisyChain daisy_chain[] =
{
{ z80pio_reset , z80pio_interrupt, z80pio_reti , 0 }, /* device 0 = PIO_0 , low priority */
{ z80ctc_reset , z80ctc_interrupt, z80ctc_reti , 0 }, /* device 1 = CTC_0 , high priority */
{ 0,0,0,-1} /* end mark */
};
cpu_setdaisychain (1,daisy_chain );
/*
daisy_chain is connect link for Z80 daisy-chain .
paramater is
{ pointer of reset , pointer of interrupt entry,pointer of RETI handler , device paramater }
reset : This function is called when z80 cpu reset
interrupt entry : This function is called when z80 interrupt entry for this device
It shoud be change interrupt status and
set new status with cpu_cause_interrupt function
return value is interrupt vector
RETI handler : This function is called when z80 reti operation for this device
It shoud be change interrupt status and
set new status with cpu_cause_interrupt function
handler shoud be allocate static.
Because this pointers is used when reset cpu.
The daisy chain link is build by this pointers.
daisy chain priority:
As for Priority , the top side is lower , bottom side is higher
*/
}
if ((_single = (signed char *)gp2x_malloc(SINGLE_LENGTH)) == 0)
{
SN76496_sh_stop();
gp2x_free(_single);
return 1;
}
for (i = 0;i < SINGLE_LENGTH;i++) /* freq = ctc2 zco / 8 */
_single[i] = ((i/SINGLE_DIVIDER)&0x01)*(SINGLE_VOLUME/2);
/* CTC2 single tone generator */
osd_play_sample(4,_single,SINGLE_LENGTH,single_rate,single_volume,1);
return 0;
}