static void spacefev_update_SN76477_status( device_t *sn )
{
n8080_state *state = sn->machine().driver_data<n8080_state>();
double dblR0 = RES_M(1.0);
double dblR1 = RES_M(1.5);
if (!state->m_mono_flop[0])
{
dblR0 = 1 / (1 / RES_K(150) + 1 / dblR0); /* ? */
}
if (!state->m_mono_flop[1])
{
dblR1 = 1 / (1 / RES_K(620) + 1 / dblR1); /* ? */
}
sn76477_decay_res_w(sn, dblR0);
sn76477_vco_res_w(sn, dblR1);
sn76477_enable_w(sn,
!state->m_mono_flop[0] &&
!state->m_mono_flop[1] &&
!state->m_mono_flop[2]);
sn76477_vco_w(sn, state->m_mono_flop[1]);
sn76477_mixer_b_w(sn, state->m_mono_flop[0]);
}
static void sheriff_update_SN76477_status( device_t *sn )
{
n8080_state *state = sn->machine().driver_data<n8080_state>();
if (state->m_mono_flop[1])
{
sn76477_vco_voltage_w(sn, 5);
}
else
{
sn76477_vco_voltage_w(sn, 0);
}
sn76477_enable_w(sn,
!state->m_mono_flop[0] &&
!state->m_mono_flop[1]);
sn76477_vco_w(sn, state->m_mono_flop[0]);
sn76477_mixer_b_w(sn, !state->m_mono_flop[0]);
}
static TIMER_CALLBACK( schaser_effect_555_cb )
{
_8080bw_state *state = machine.driver_data<_8080bw_state>();
int effect = param;
attotime new_time;
/* Toggle 555 output */
state->m_schaser_effect_555_is_low = !state->m_schaser_effect_555_is_low;
state->m_schaser_effect_555_time_remain = attotime::zero;
state->m_schaser_effect_555_time_remain_savable = state->m_schaser_effect_555_time_remain.as_double();
if (state->m_schaser_effect_555_is_low)
new_time = PERIOD_OF_555_ASTABLE(0, RES_K(20), CAP_U(1)) / 2;
else
{
if (effect)
new_time = attotime(0, ATTOSECONDS_PER_SECOND * .8873 * schaser_effect_rc[effect]);
else
new_time = attotime::never;
}
state->m_schaser_effect_555_timer->adjust(new_time, effect);
sn76477_enable_w(state->m_sn, !(state->m_schaser_effect_555_is_low || state->m_schaser_explosion));
sn76477_one_shot_cap_voltage_w(state->m_sn, !(state->m_schaser_effect_555_is_low || state->m_schaser_explosion) ? 0 : SN76477_EXTERNAL_VOLTAGE_DISCONNECT);
}
static TIMER_CALLBACK( schaser_effect_555_cb )
{
mw8080bw_state *state = machine->driver_data<mw8080bw_state>();
int effect = param;
attotime new_time;
/* Toggle 555 output */
state->schaser_effect_555_is_low = !state->schaser_effect_555_is_low;
state->schaser_effect_555_time_remain = attotime_zero;
state->schaser_effect_555_time_remain_savable = attotime_to_double(state->schaser_effect_555_time_remain);
if (state->schaser_effect_555_is_low)
new_time = attotime_div(PERIOD_OF_555_ASTABLE(0, RES_K(20), CAP_U(1)), 2);
else
{
if (effect)
new_time = attotime_make(0, ATTOSECONDS_PER_SECOND * .8873 * schaser_effect_rc[effect]);
else
new_time = attotime_never;
}
timer_adjust_oneshot(state->schaser_effect_555_timer, new_time, effect);
sn76477_enable_w(state->sn, !(state->schaser_effect_555_is_low || state->schaser_explosion));
sn76477_one_shot_cap_voltage_w(state->sn, !(state->schaser_effect_555_is_low || state->schaser_explosion) ? 0 : SN76477_EXTERNAL_VOLTAGE_DISCONNECT);
}
void crbaloon_audio_set_explosion_enable(device_t *sn, int enabled)
{
sn76477_enable_w(sn, enabled);
}
