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redbaron: change nosedive sound to noteslide down instead of noteslide up

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hap 2024-11-23 12:16:23 +01:00
parent 1583c99b47
commit f74f96410f
3 changed files with 7 additions and 14 deletions
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2
src/devices/cpu/scmp/scmp.cpp
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@ -2,7 +2,7 @@
// copyright-holders:Miodrag Milanovic // copyright-holders:Miodrag Milanovic
/***************************************************************************** /*****************************************************************************
* *
* scmp.c * scmp.cpp
* *
* National Semiconductor SC/MP CPU emulation * National Semiconductor SC/MP CPU emulation
* (SC/MP = Simple-to-use, Cost-effective MicroProcessor) * (SC/MP = Simple-to-use, Cost-effective MicroProcessor)

17
src/mame/atari/redbaron.cpp
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@ -4,6 +4,9 @@
Atari Red Baron sound hardware Atari Red Baron sound hardware
TODO:
- convert to netlist
*************************************************************************/ *************************************************************************/
/* /*
@ -18,7 +21,6 @@
#include "emu.h" #include "emu.h"
#include "redbaron.h" #include "redbaron.h"
#include "sound/pokey.h"
#include <algorithm> #include <algorithm>
@ -159,7 +161,7 @@ void redbaron_sound_device::sound_stream_update(sound_stream &stream, std::vecto
/* discharge C32 (0.1u) through R26 (33k) + R27 (15k) /* discharge C32 (0.1u) through R26 (33k) + R27 (15k)
* 0.68 * C32 * (R26 + R27) = 3264us * 0.68 * C32 * (R26 + R27) = 3264us
*/ */
// constexpr int C32_DISCHARGE_TIME = int(32767 / 0.003264); //constexpr int C32_DISCHARGE_TIME = int(32767 / 0.003264);
/* I think this is to short. Is C32 really 1u? */ /* I think this is to short. Is C32 really 1u? */
constexpr int C32_DISCHARGE_TIME = int(32767 / 0.03264); constexpr int C32_DISCHARGE_TIME = int(32767 / 0.03264);
m_shot_amp_counter -= C32_DISCHARGE_TIME; m_shot_amp_counter -= C32_DISCHARGE_TIME;
@ -201,7 +203,7 @@ void redbaron_sound_device::sound_stream_update(sound_stream &stream, std::vecto
* frequency = 1.44 / ((33k + 2*47k) * 0.01u) = 1134Hz * frequency = 1.44 / ((33k + 2*47k) * 0.01u) = 1134Hz
* modulated by squeal_amp * modulated by squeal_amp
*/ */
m_squeal_off_counter -= (1134 + 1134 * m_squeal_amp / 32767) / 3; m_squeal_off_counter -= 2268 - 1134 * m_squeal_amp / 32767;
while( m_squeal_off_counter <= 0 ) while( m_squeal_off_counter <= 0 )
{ {
m_squeal_off_counter += OUTPUT_RATE; m_squeal_off_counter += OUTPUT_RATE;
@ -219,7 +221,7 @@ void redbaron_sound_device::sound_stream_update(sound_stream &stream, std::vecto
} }
} }
/* mix sequal sound at 40% */ /* mix squeal sound at 40% */
if( m_squeal_out ) if( m_squeal_out )
sum += 32767 * 40 / 100; sum += 32767 * 40 / 100;
@ -237,10 +239,3 @@ void redbaron_sound_device::sounds_w(uint8_t data)
m_channel->update(); m_channel->update();
m_latch = data; m_latch = data;
} }
void redbaron_sound_device::pokey_w(offs_t offset, uint8_t data)
{
//if( m_latch & 0x20 )
//m_pokey->write(offset, data);
}

2
src/mame/atari/redbaron.h
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@ -22,8 +22,6 @@ protected:
virtual void sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) override; virtual void sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) override;
private: private:
[[maybe_unused]] void pokey_w(offs_t offset, uint8_t data);
std::unique_ptr<int16_t[]> m_vol_lookup; std::unique_ptr<int16_t[]> m_vol_lookup;
int16_t m_vol_crash[16]; int16_t m_vol_crash[16];