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https://github.com/holub/mame
synced 2025-04-22 16:31:49 +03:00
Modernized the sega005 sound device. (nw)
This commit is contained in:
Ivan Vangelista
parent
ac82fce12d
commit
a802f7a99e
@ -17,8 +17,6 @@
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#include "sound/samples.h"
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#include "sound/tms36xx.h"
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#include "sound/dac.h"
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#include "devlegcy.h"
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/*************************************
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@ -30,29 +28,13 @@
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#define SEGA005_555_TIMER_FREQ (1.44 / ((15000 + 2 * 4700) * 1.5e-6))
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#define SEGA005_COUNTER_FREQ (100000) /* unknown, just a guess */
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class sega005_sound_device : public device_t,
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public device_sound_interface
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{
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public:
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sega005_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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protected:
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// device-level overrides
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virtual void device_config_complete();
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virtual void device_start();
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// sound stream update overrides
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virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples);
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private:
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// internal state
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};
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extern const device_type SEGA005;
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const device_type SEGA005 = &device_creator<sega005_sound_device>;
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sega005_sound_device::sega005_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
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: device_t(mconfig, SEGA005, "005 Custom", tag, owner, clock, "sega005_sound", __FILE__),
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device_sound_interface(mconfig, *this)
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device_sound_interface(mconfig, *this),
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m_sega005_sound_timer(NULL),
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m_sega005_stream(NULL)
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{
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}
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@ -70,10 +52,19 @@ void sega005_sound_device::device_config_complete()
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// device_start - device-specific startup
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//-------------------------------------------------
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static DEVICE_START( sega005_sound );
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void sega005_sound_device::device_start()
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{
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DEVICE_START_NAME( sega005_sound )(this);
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segag80r_state *state = machine().driver_data<segag80r_state>();
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/* create the stream */
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m_sega005_stream = machine().sound().stream_alloc(*this, 0, 1, SEGA005_COUNTER_FREQ, this);
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/* create a timer for the 555 */
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m_sega005_sound_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(sega005_sound_device::sega005_auto_timer), this));
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/* set the initial sound data */
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state->m_sound_data = 0x00;
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state->sega005_update_sound_data();
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}
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//-------------------------------------------------
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@ -82,8 +73,24 @@ void sega005_sound_device::device_start()
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void sega005_sound_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples)
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{
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// should never get here
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fatalerror("sound_stream_update called; not applicable to legacy sound devices\n");
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segag80r_state *state = machine().driver_data<segag80r_state>();
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const UINT8 *sound_prom = state->memregion("proms")->base();
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int i;
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/* no implementation yet */
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for (i = 0; i < samples; i++)
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{
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if (!(state->m_sound_state[1] & 0x10) && (++state->m_square_count & 0xff) == 0)
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{
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state->m_square_count = sound_prom[state->m_sound_data & 0x1f];
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/* hack - the RC should filter this out */
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if (state->m_square_count != 0xff)
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state->m_square_state += 2;
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}
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outputs[0][i] = (state->m_square_state & 2) ? 0x7fff : 0x0000;
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}
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}
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@ -355,9 +362,6 @@ WRITE8_MEMBER(segag80r_state::astrob_sound_w)
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*
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*************************************/
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static STREAM_UPDATE( sega005_stream_update );
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static TIMER_CALLBACK( sega005_auto_timer );
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/*
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005
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@ -495,29 +499,28 @@ WRITE8_MEMBER(segag80r_state::sega005_sound_a_w)
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}
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INLINE void sega005_update_sound_data(running_machine &machine)
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inline void segag80r_state::sega005_update_sound_data()
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{
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segag80r_state *state = machine.driver_data<segag80r_state>();
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UINT8 newval = state->memregion("005")->base()[state->m_sound_addr];
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UINT8 diff = newval ^ state->m_sound_data;
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UINT8 newval = memregion("005")->base()[m_sound_addr];
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UINT8 diff = newval ^ m_sound_data;
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//mame_printf_debug(" [%03X] = %02X\n", state->m_sound_addr, newval);
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//mame_printf_debug(" [%03X] = %02X\n", m_sound_addr, newval);
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/* latch the new value */
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state->m_sound_data = newval;
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m_sound_data = newval;
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/* if bit 5 goes high, we reset the timer */
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if ((diff & 0x20) && !(newval & 0x20))
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{
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//mame_printf_debug("Stopping timer\n");
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state->m_sega005_sound_timer->adjust(attotime::never);
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m_005snd->m_sega005_sound_timer->adjust(attotime::never);
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}
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/* if bit 5 goes low, we start the timer again */
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if ((diff & 0x20) && (newval & 0x20))
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{
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//mame_printf_debug("Starting timer\n");
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state->m_sega005_sound_timer->adjust(attotime::from_hz(SEGA005_555_TIMER_FREQ), 0, attotime::from_hz(SEGA005_555_TIMER_FREQ));
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m_005snd->m_sega005_sound_timer->adjust(attotime::from_hz(SEGA005_555_TIMER_FREQ), 0, attotime::from_hz(SEGA005_555_TIMER_FREQ));
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}
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}
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@ -536,7 +539,7 @@ WRITE8_MEMBER(segag80r_state::sega005_sound_b_w)
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//mame_printf_debug("sound[%d] = %02X\n", 1, data);
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/* force a stream update */
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m_sega005_stream->update();
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m_005snd->m_sega005_stream->update();
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/* ROM address */
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m_sound_addr = ((data & 0x0f) << 7) | (m_sound_addr & 0x7f);
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@ -553,7 +556,7 @@ WRITE8_MEMBER(segag80r_state::sega005_sound_b_w)
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m_sound_addr = (m_sound_addr & 0x780) | ((m_sound_addr + 1) & 0x07f);
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/* update the sound data */
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sega005_update_sound_data(machine());
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sega005_update_sound_data();
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}
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@ -564,55 +567,17 @@ WRITE8_MEMBER(segag80r_state::sega005_sound_b_w)
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*
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*************************************/
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static DEVICE_START( sega005_sound )
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TIMER_CALLBACK_MEMBER( sega005_sound_device::sega005_auto_timer )
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{
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segag80r_state *state = device->machine().driver_data<segag80r_state>();
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running_machine &machine = device->machine();
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/* create the stream */
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state->m_sega005_stream = device->machine().sound().stream_alloc(*device, 0, 1, SEGA005_COUNTER_FREQ, NULL, sega005_stream_update);
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/* create a timer for the 555 */
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state->m_sega005_sound_timer = machine.scheduler().timer_alloc(FUNC(sega005_auto_timer));
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/* set the initial sound data */
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state->m_sound_data = 0x00;
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sega005_update_sound_data(machine);
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}
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static STREAM_UPDATE( sega005_stream_update )
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{
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segag80r_state *state = device->machine().driver_data<segag80r_state>();
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const UINT8 *sound_prom = state->memregion("proms")->base();
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int i;
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/* no implementation yet */
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for (i = 0; i < samples; i++)
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{
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if (!(state->m_sound_state[1] & 0x10) && (++state->m_square_count & 0xff) == 0)
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{
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state->m_square_count = sound_prom[state->m_sound_data & 0x1f];
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/* hack - the RC should filter this out */
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if (state->m_square_count != 0xff)
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state->m_square_state += 2;
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}
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outputs[0][i] = (state->m_square_state & 2) ? 0x7fff : 0x0000;
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}
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}
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static TIMER_CALLBACK( sega005_auto_timer )
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{
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segag80r_state *state = machine.driver_data<segag80r_state>();
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segag80r_state *state = machine().driver_data<segag80r_state>();
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/* force an update then clock the sound address if not held in reset */
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state->m_sega005_stream->update();
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m_sega005_stream->update();
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if ((state->m_sound_state[1] & 0x20) && !(state->m_sound_state[1] & 0x10))
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{
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state->m_sound_addr = (state->m_sound_addr & 0x780) | ((state->m_sound_addr + 1) & 0x07f);
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sega005_update_sound_data(machine);
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state->sega005_update_sound_data();
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}
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}
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@ -10,6 +10,9 @@
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#include "sound/sn76496.h"
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#include "audio/segasnd.h"
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class sega005_sound_device;
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class segag80r_state : public driver_device
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{
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public:
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@ -28,7 +31,8 @@ public:
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m_audiocpu(*this, "audiocpu"),
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m_samples(*this, "samples"),
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m_speech(*this, "segaspeech"),
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m_usbsnd(*this, "usbsnd") { }
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m_usbsnd(*this, "usbsnd"),
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m_005snd(*this, "005") { }
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required_shared_ptr<UINT8> m_mainram;
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required_shared_ptr<UINT8> m_videoram;
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@ -40,6 +44,7 @@ public:
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optional_device<samples_device> m_samples;
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optional_device<speech_sound_device> m_speech;
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optional_device<usb_sound_device> m_usbsnd;
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optional_device<sega005_sound_device> m_005snd;
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UINT8 m_sound_state[2];
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UINT8 m_sound_rate;
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@ -47,8 +52,6 @@ public:
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UINT8 m_sound_data;
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UINT8 m_square_state;
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UINT8 m_square_count;
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emu_timer *m_sega005_sound_timer;
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sound_stream *m_sega005_stream;
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UINT8 m_n7751_command;
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UINT8 m_n7751_busy;
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segag80_decrypt_func m_decrypt;
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@ -121,6 +124,7 @@ public:
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INTERRUPT_GEN_MEMBER(sindbadm_vblank_start);
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DECLARE_WRITE8_MEMBER(sega005_sound_a_w);
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DECLARE_WRITE8_MEMBER(sega005_sound_b_w);
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inline void sega005_update_sound_data();
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DECLARE_WRITE8_MEMBER(monsterb_sound_a_w);
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DECLARE_WRITE8_MEMBER(monsterb_sound_b_w);
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DECLARE_READ8_MEMBER(n7751_status_r);
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@ -145,6 +149,32 @@ protected:
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/*----------- defined in audio/segag80r.c -----------*/
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class sega005_sound_device : public device_t,
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public device_sound_interface
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{
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public:
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sega005_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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emu_timer *m_sega005_sound_timer;
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sound_stream *m_sega005_stream;
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protected:
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// device-level overrides
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virtual void device_config_complete();
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virtual void device_start();
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// sound stream update overrides
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virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples);
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private:
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// internal state
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TIMER_CALLBACK_MEMBER( sega005_auto_timer );
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};
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extern const device_type SEGA005;
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MACHINE_CONFIG_EXTERN( astrob_sound_board );
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MACHINE_CONFIG_EXTERN( 005_sound_board );
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MACHINE_CONFIG_EXTERN( spaceod_sound_board );
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