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more cleanup of cane - save state support and fix for Linux with GCC and glibstdc++ (nw)

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This commit is contained in:
Vas Crabb 2019-11-01 00:12:57 +11:00
parent ef37c69c9b
commit 0be348c7fb
2 changed files with 12 additions and 9 deletions
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19
src/mame/audio/8080bw.cpp
View File

@ -10,6 +10,8 @@
#include "sound/discrete.h"
#include "speaker.h"
#include <cmath>
//#define VERBOSE 1
#include "logmacro.h"
@ -1462,15 +1464,12 @@ cane_audio_device::cane_audio_device(machine_config const &mconfig, char const *
m_vco_timer(*this, "vco_timer"),
m_sn(*this, "snsnd"),
m_discrete(*this, "discrete"),
m_vco_rc_chargetime(INT_MAX)
m_vco_rc_chargetime(attotime::never)
{
}
void cane_audio_device::device_add_mconfig(machine_config &config)
{
// provare a commentare
m_vco_rc_chargetime = INT_MAX;
TIMER(config, m_vco_timer).configure_periodic(FUNC(cane_audio_device::vco_voltage_timer), attotime::from_hz(1000));
SPEAKER(config, "mono").front_center();
@ -1504,6 +1503,10 @@ ioport_constructor cane_audio_device::device_input_ports() const
void cane_audio_device::device_start()
{
// provare a commentare
m_vco_rc_chargetime = attotime::never;
save_item(NAME(m_vco_rc_chargetime));
}
void cane_audio_device::sh_port_1_w(u8 data)
@ -1524,7 +1527,7 @@ void cane_audio_device::sh_port_1_w(u8 data)
m_sn->set_mixer_params(BIT(data, 2), BIT(data, 3), BIT(data, 1));
m_vco_timer->adjust(attotime::zero, m_vco_timer->param(), attotime::from_hz(1000));
m_vco_rc_chargetime = m_vco_timer->start_time().as_double();
m_vco_rc_chargetime = m_vco_timer->start_time();
// Little hack...
// To be precise I should enable the 76477 every time the CPU reads or write to a port different from port 3
@ -1672,10 +1675,10 @@ DISCRETE_SOUND_END
TIMER_DEVICE_CALLBACK_MEMBER(cane_audio_device::vco_voltage_timer)
{
double voltage;
voltage = 5 * (1 - exp(- (m_vco_timer->fire_time().as_double() - m_vco_rc_chargetime) / 47));
const double delta = (m_vco_timer->fire_time() - m_vco_rc_chargetime).as_double();
const double voltage = 5 * (1 - std::exp(-delta / 47));
LOG("t = %d\n", m_vco_timer->fire_time().as_double() - m_vco_rc_chargetime);
LOG("t = %d\n", delta);
LOG("vco_voltage = %d\n", voltage);
m_sn->vco_voltage_w(voltage);

2
src/mame/audio/8080bw.h
View File

@ -37,7 +37,7 @@ private:
required_device<sn76477_device> m_sn;
required_device<discrete_sound_device> m_discrete;
double m_vco_rc_chargetime;
attotime m_vco_rc_chargetime;
};
DECLARE_DEVICE_TYPE(CANE_AUDIO, cane_audio_device)