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https://github.com/holub/mame
synced 2025-04-19 23:12:11 +03:00
audio/cclimber: use a timer+dac instead of MAME samples, add support for looping
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hap
parent
1fc3a3ff10
commit
3e4d77b937
@ -1,20 +1,20 @@
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// license:BSD-3-Clause
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// copyright-holders:Nicola Salmoria
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// copyright-holders:Nicola Salmoria, hap
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/***************************************************************************
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Crazy Climber sound hardware
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It has an AY-3-8910.
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And 8KB ROM for voice samples, done with TTL chips.
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***************************************************************************/
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#include "emu.h"
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#include "audio/cclimber.h"
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#include "sound/ay8910.h"
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// macro to convert 4-bit unsigned samples to 16-bit signed samples
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#define SAMPLE_CONV4(a) (0x1111*((a&0x0f))-0x8000)
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SAMPLES_START_CB_MEMBER( cclimber_audio_device::sh_start )
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{
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m_sample_buf = std::make_unique<int16_t[]>(2 * m_samples_region.bytes());
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save_pointer(NAME(m_sample_buf), 2 * m_samples_region.bytes());
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}
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//**************************************************************************
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// DEVICE DEFINITIONS
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//**************************************************************************
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@ -26,17 +26,14 @@ DEFINE_DEVICE_TYPE(CCLIMBER_AUDIO, cclimber_audio_device, "cclimber_audio", "Cra
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// cclimber_audio_device: Constructor
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//-------------------------------------------------
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cclimber_audio_device::cclimber_audio_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
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cclimber_audio_device::cclimber_audio_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) :
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device_t(mconfig, CCLIMBER_AUDIO, tag, owner, clock),
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m_sample_buf(nullptr),
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m_sample_num(0),
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m_sample_freq(0),
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m_sample_volume(0),
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m_sample_clockdiv(2),
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m_samples(*this, "samples"),
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m_samples_region(*this, "samples")
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{
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}
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m_dac(*this, "dac"),
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m_volume(*this, "volume"),
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m_rom(*this, "samples"),
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m_sample_clockdiv(2)
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{ }
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//-------------------------------------------------
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// device_start - device-specific startup
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@ -44,11 +41,24 @@ cclimber_audio_device::cclimber_audio_device(const machine_config &mconfig, cons
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void cclimber_audio_device::device_start()
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{
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save_item(NAME(m_sample_num));
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save_item(NAME(m_sample_freq));
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save_item(NAME(m_sample_volume));
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m_address = 0;
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m_start_address = 0;
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m_loop_address = 0;
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m_sample_rate = 0;
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m_sample_trigger = 0;
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m_sample_timer = timer_alloc(FUNC(cclimber_audio_device::sample_tick), this);
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m_sample_timer->adjust(attotime::zero);
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// register for savestates
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save_item(NAME(m_address));
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save_item(NAME(m_start_address));
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save_item(NAME(m_loop_address));
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save_item(NAME(m_sample_rate));
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save_item(NAME(m_sample_trigger));
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}
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//-------------------------------------------------
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// device_add_mconfig - add device configuration
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//-------------------------------------------------
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@ -56,64 +66,57 @@ void cclimber_audio_device::device_start()
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void cclimber_audio_device::device_add_mconfig(machine_config &config)
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{
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ay8910_device &aysnd(AY8910(config, "aysnd", DERIVED_CLOCK(1, 1)));
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aysnd.port_a_write_callback().set(FUNC(cclimber_audio_device::sample_select_w));
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aysnd.port_a_write_callback().set(FUNC(cclimber_audio_device::start_address_w));
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aysnd.port_b_write_callback().set(FUNC(cclimber_audio_device::loop_address_w));
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aysnd.add_route(ALL_OUTPUTS, ":speaker", 0.5);
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SAMPLES(config, m_samples);
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m_samples->set_channels(1);
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m_samples->set_samples_start_callback(FUNC(cclimber_audio_device::sh_start));
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m_samples->add_route(ALL_OUTPUTS, ":speaker", 0.5);
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DAC_4BIT_R2R(config, m_dac).add_route(ALL_OUTPUTS, "volume", 0.5);
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FILTER_VOLUME(config, m_volume).add_route(ALL_OUTPUTS, ":speaker", 1.0);
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}
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void cclimber_audio_device::sample_select_w(uint8_t data)
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//-------------------------------------------------
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// handlers
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//-------------------------------------------------
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void cclimber_audio_device::sample_rate_w(u8 data)
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{
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m_sample_num = data;
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m_sample_rate = data;
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}
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void cclimber_audio_device::sample_rate_w(uint8_t data)
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void cclimber_audio_device::sample_volume_w(u8 data)
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{
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// calculate the sampling frequency
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m_sample_freq = clock() / m_sample_clockdiv / (256 - data);
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}
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void cclimber_audio_device::sample_volume_w(uint8_t data)
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{
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m_sample_volume = data & 0x1f; // range 0-31
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m_volume->flt_volume_set_volume(double(data & 0x1f) / 31.0); // range 0-31
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}
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void cclimber_audio_device::sample_trigger(int state)
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{
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if (state == 0)
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return;
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// start playing on rising edge
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if (state && !m_sample_trigger)
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m_address = m_start_address * 64;
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play_sample(32 * m_sample_num, m_sample_freq, m_sample_volume);
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m_sample_trigger = state;
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}
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void cclimber_audio_device::sample_trigger_w(uint8_t data)
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void cclimber_audio_device::sample_trigger_w(u8 data)
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{
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sample_trigger(data != 0);
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}
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void cclimber_audio_device::play_sample(int start,int freq,int volume)
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TIMER_CALLBACK_MEMBER(cclimber_audio_device::sample_tick)
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{
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int romlen = m_samples_region.bytes();
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u16 mask = ((m_rom.bytes() << 1) - 1) & 0x3fff;
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u8 data = m_rom[m_address >> 1 & mask];
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// decode the ROM samples
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int len = 0;
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while (start + len < romlen && m_samples_region[start+len] != 0x70)
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{
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int sample;
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// sample end marker, continue from loop point
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if (data == 0x70)
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m_address = m_loop_address * 64;
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sample = (m_samples_region[start + len] & 0xf0) >> 4;
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m_sample_buf[2*len] = SAMPLE_CONV4(sample) * volume / 31;
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m_dac->write((m_address & 1) ? (data & 0xf) : (data >> 4));
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sample = m_samples_region[start + len] & 0x0f;
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m_sample_buf[2*len + 1] = SAMPLE_CONV4(sample) * volume / 31;
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if (m_sample_trigger)
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m_address++;
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len++;
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}
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m_samples->start_raw(0, m_sample_buf.get(), 2 * len, freq);
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m_sample_timer->adjust(attotime::from_ticks(256 - m_sample_rate, clock() / m_sample_clockdiv));
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}
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@ -1,18 +1,18 @@
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// license:BSD-3-Clause
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// copyright-holders:Aaron Giles
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// copyright-holders:Nicola Salmoria, hap
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/***************************************************************************
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cclimber.h
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Functions to emulate the cclimber audio boards
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Crazy Climber sound hardware
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***************************************************************************/
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#ifndef MAME_AUDIO_CCLIMBER_H
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#define MAME_AUDIO_CCLIMBER_H
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#pragma once
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#include "sound/samples.h"
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#include "sound/dac.h"
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#include "sound/flt_vol.h"
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DECLARE_DEVICE_TYPE(CCLIMBER_AUDIO, cclimber_audio_device)
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@ -22,34 +22,39 @@ class cclimber_audio_device : public device_t
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{
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public:
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// construction/destruction
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cclimber_audio_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
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cclimber_audio_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
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auto &set_sample_clockdiv(uint8_t div) { m_sample_clockdiv = div; return *this; } // determines base sound pitch (default 2)
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auto &set_sample_clockdiv(u8 div) { m_sample_clockdiv = div; return *this; } // determines base sound pitch (default 2)
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void sample_trigger(int state);
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void sample_trigger_w(uint8_t data);
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void sample_rate_w(uint8_t data);
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void sample_volume_w(uint8_t data);
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void sample_trigger_w(u8 data);
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void sample_rate_w(u8 data);
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void sample_volume_w(u8 data);
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protected:
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// device level overrides
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virtual void device_start() override;
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virtual void device_reset() override { sample_volume_w(0); }
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virtual void device_add_mconfig(machine_config &config) override;
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void play_sample(int start, int freq, int volume);
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private:
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std::unique_ptr<int16_t[]> m_sample_buf; // buffer to decode samples at run time
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uint8_t m_sample_num;
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uint32_t m_sample_freq;
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uint8_t m_sample_volume;
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uint8_t m_sample_clockdiv;
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required_device<samples_device> m_samples;
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required_region_ptr<uint8_t> m_samples_region;
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required_device<dac_4bit_r2r_device> m_dac;
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required_device<filter_volume_device> m_volume;
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required_region_ptr<u8> m_rom;
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void sample_select_w(uint8_t data);
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void start_address_w(u8 data) { m_start_address = data; }
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void loop_address_w(u8 data) { m_loop_address = data; }
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SAMPLES_START_CB_MEMBER( sh_start );
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u8 m_sample_clockdiv;
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emu_timer *m_sample_timer;
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TIMER_CALLBACK_MEMBER(sample_tick);
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u16 m_address;
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u8 m_start_address;
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u8 m_loop_address;
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u8 m_sample_rate;
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int m_sample_trigger;
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};
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@ -154,7 +154,6 @@ TODO:
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lives - $6155
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TODO:
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- some of the samples should loop (truck, helicopter, motorcycle)
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- COINB DSW is missing
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- few issues in cocktail mode
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@ -477,6 +476,7 @@ void cclimber_state::cclimber_portmap(address_map &map)
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map.global_mask(0xff);
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map(0x08, 0x09).w("cclimber_audio:aysnd", FUNC(ay8910_device::address_data_w));
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map(0x0c, 0x0c).r("cclimber_audio:aysnd", FUNC(ay8910_device::data_r));
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map(0x0d, 0x0d).nopw();
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}
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void cclimber_state::rpatrol_portmap(address_map &map)
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@ -2808,4 +2808,4 @@ GAME( 1983, guzzlers, guzzler, guzzler, guzzler, cclimber_state, empty_i
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GAME( 1983, yamato, 0, yamato, yamato, cclimber_state, init_yamato, ROT90, "Sega", "Yamato (US)", MACHINE_IMPERFECT_GRAPHICS | MACHINE_SUPPORTS_SAVE )
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GAME( 1983, yamato2, yamato, yamato, yamato, cclimber_state, init_yamato, ROT90, "Sega", "Yamato (World?)", MACHINE_IMPERFECT_GRAPHICS | MACHINE_SUPPORTS_SAVE )
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GAME( 1983, toprollr, 0, toprollr, toprollr, cclimber_state, init_toprollr, ROT90, "Jaleco", "Top Roller", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
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GAME( 1983, toprollr, 0, toprollr, toprollr, cclimber_state, init_toprollr, ROT90, "Jaleco", "Top Roller", MACHINE_SUPPORTS_SAVE )
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