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-rw-r--r--src/mame/audio/targ.cpp202
1 files changed, 0 insertions, 202 deletions
diff --git a/src/mame/audio/targ.cpp b/src/mame/audio/targ.cpp
deleted file mode 100644
index 12c799c8776..00000000000
--- a/src/mame/audio/targ.cpp
+++ /dev/null
@@ -1,202 +0,0 @@
-// license:BSD-3-Clause
-// copyright-holders:Aaron Giles
-/*************************************************************************
-
- Targ hardware
-
-*************************************************************************/
-
-/* Sound channel usage
- 0 = CPU music, Shoot
- 1 = Crash
- 2 = Spectar sound
- 3 = Tone generator
-*/
-
-#include "emu.h"
-#include "includes/exidy.h"
-#include "speaker.h"
-
-
-
-#define SPECTAR_MAXFREQ 525000
-#define TARG_MAXFREQ 125000
-
-static const int16_t sine_wave[32] =
-{
- 0x0f0f, 0x0f0f, 0x0f0f, 0x0606, 0x0606, 0x0909, 0x0909, 0x0606, 0x0606, 0x0909, 0x0606, 0x0d0d, 0x0f0f, 0x0f0f, 0x0d0d, 0x0000,
- -0x191a, -0x2122, -0x1e1f, -0x191a, -0x1314, -0x191a, -0x1819, -0x1819, -0x1819, -0x1314, -0x1314, -0x1314, -0x1819, -0x1e1f, -0x1e1f, -0x1819
-};
-
-
-/* some macros to make detecting bit changes easier */
-#define RISING_EDGE(bit) ( (data & bit) && !(m_port_1_last & bit))
-#define FALLING_EDGE(bit) (!(data & bit) && (m_port_1_last & bit))
-
-
-void exidy_state::adjust_sample(uint8_t freq)
-{
- m_tone_freq = freq;
-
- if (!m_samples->playing(3))
- {
- m_samples->set_volume(3, 0);
- m_samples->start_raw(3, sine_wave, 32, 1000, true);
- }
-
- if ((m_tone_freq == 0xff) || (m_tone_freq == 0x00))
- m_samples->set_volume(3, 0);
- else
- {
- m_samples->set_frequency(3, 1.0 * m_max_freq / (0xff - m_tone_freq));
- m_samples->set_volume(3, m_tone_active);
- }
-}
-
-
-void exidy_state::targ_audio_1_w(uint8_t data)
-{
- /* CPU music */
- if (BIT(m_port_1_last ^ data, 0))
- m_dac->write(BIT(data, 0));
-
- /* shot */
- if (FALLING_EDGE(0x02) && !m_samples->playing(0)) m_samples->start(0,1);
- if (RISING_EDGE(0x02)) m_samples->start(0,1);
-
- /* crash */
- if (RISING_EDGE(0x20))
- {
- if (data & 0x40)
- m_samples->start(1,0);
- else
- m_samples->start(1,2);
- }
-
- /* Sspec */
- if (data & 0x10)
- m_samples->stop(2);
- else
- {
- if ((data & 0x08) != (m_port_1_last & 0x08))
- {
- if (data & 0x08)
- m_samples->start(2,3,true);
- else
- m_samples->start(2,4,true);
- }
- }
-
- /* Game (tone generator enable) */
- if (FALLING_EDGE(0x80))
- {
- m_tone_pointer = 0;
- m_tone_active = 0;
-
- adjust_sample(m_tone_freq);
- }
-
- if (RISING_EDGE(0x80))
- m_tone_active=1;
-
- m_port_1_last = data;
-}
-
-
-void exidy_state::targ_audio_2_w(uint8_t data)
-{
- if ((data & 0x01) && !(m_port_2_last & 0x01))
- {
- uint8_t *prom = memregion("targ")->base();
-
- m_tone_pointer = (m_tone_pointer + 1) & 0x0f;
-
- adjust_sample(prom[((data & 0x02) << 3) | m_tone_pointer]);
- }
-
- m_port_2_last = data;
-}
-
-
-void exidy_state::spectar_audio_2_w(uint8_t data)
-{
- adjust_sample(data);
-}
-
-
-static const char *const sample_names[] =
-{
- "*targ",
- "expl",
- "shot",
- "sexpl",
- "spslow",
- "spfast",
- nullptr
-};
-
-
-
-void exidy_state::common_audio_start(int freq)
-{
- m_max_freq = freq;
-
- m_tone_freq = 0;
- m_tone_active = 0;
-
- /* start_raw can't be called here: chan.source will be set by
- samples_device::device_start and then nulled out by samples_device::device_reset
- at the soft_reset stage of init_machine() and will never be set again.
- Thus, I've moved it to exidy_state::adjust_sample() were it will be set after
- machine initialization. */
- //m_samples->set_volume(3, 0);
- //m_samples->start_raw(3, sine_wave, 32, 1000, true);
-
- save_item(NAME(m_port_1_last));
- save_item(NAME(m_port_2_last));
- save_item(NAME(m_tone_freq));
- save_item(NAME(m_tone_active));
-}
-
-
-SAMPLES_START_CB_MEMBER(exidy_state::spectar_audio_start)
-{
- common_audio_start(SPECTAR_MAXFREQ);
-}
-
-
-SAMPLES_START_CB_MEMBER(exidy_state::targ_audio_start)
-{
- common_audio_start(TARG_MAXFREQ);
-
- m_tone_pointer = 0;
-
- save_item(NAME(m_tone_pointer));
-}
-
-
-void exidy_state::spectar_audio(machine_config &config)
-{
- SPEAKER(config, "speaker").front_center();
-
- SAMPLES(config, m_samples);
- m_samples->set_channels(4);
- m_samples->set_samples_names(sample_names);
- m_samples->set_samples_start_callback(FUNC(exidy_state::spectar_audio_start));
- m_samples->add_route(ALL_OUTPUTS, "speaker", 0.25);
-
- DAC_1BIT(config, m_dac, 0).add_route(ALL_OUTPUTS, "speaker", 0.99);
-}
-
-void exidy_state::targ_audio(machine_config &config)
-{
- SPEAKER(config, "speaker").front_center();
-
- SAMPLES(config, m_samples);
- m_samples->set_channels(4);
- m_samples->set_samples_names(sample_names);
- m_samples->set_samples_start_callback(FUNC(exidy_state::targ_audio_start));
- m_samples->add_route(ALL_OUTPUTS, "speaker", 0.25);
-
- DAC_1BIT(config, m_dac, 0).add_route(ALL_OUTPUTS, "speaker", 0.99);
-}