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rf5c68.cpp: Implement some chip variant differences, Verify,Implement RF5C164 default register map

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Reference: RF5C68 Datasheet, Mega CD hardware manual PCM sound source
segas18.cpp, segas32.cpp: Add notes for sound chip
megacd.cpp: Correct sound chip variation
This commit is contained in:
cam900 2020-06-08 23:38:46 +09:00
parent ddc7ec4db2
commit 0307b9664c
6 changed files with 49 additions and 34 deletions
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42
src/devices/sound/rf5c68.cpp
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@ -3,8 +3,8 @@
/*********************************************************/ /*********************************************************/
/* ricoh RF5C68(or clone) PCM controller */ /* ricoh RF5C68(or clone) PCM controller */
/* */ /* */
/* TODO : RF5C164 (Sega CD/Mega CD) */ /* TODO: Verify RF5C105,164 (Sega CD/Mega CD) */
/* has difference? */ /* differences */
/*********************************************************/ /*********************************************************/
#include "emu.h" #include "emu.h"
@ -12,8 +12,8 @@
// device type definition // device type definition
DEFINE_DEVICE_TYPE(RF5C68, rf5c68_device, "rf5c68", "Ricoh RF5C68") DEFINE_DEVICE_TYPE(RF5C68, rf5c68_device, "rf5c68", "Ricoh RF5C68")
DEFINE_DEVICE_TYPE(RF5C164, rf5c164_device, "rf5c164", "Ricoh RF5C164") DEFINE_DEVICE_TYPE(RF5C164, rf5c164_device, "rf5c164", "Ricoh RF5C164") // or Sega 315-5476A
void rf5c68_device::map(address_map &map) void rf5c68_device::map(address_map &map)
@ -23,6 +23,14 @@ void rf5c68_device::map(address_map &map)
map(0x1000, 0x1fff).rw(FUNC(rf5c68_device::rf5c68_mem_r), FUNC(rf5c68_device::rf5c68_mem_w)); // A12 = 1 : Waveform data map(0x1000, 0x1fff).rw(FUNC(rf5c68_device::rf5c68_mem_r), FUNC(rf5c68_device::rf5c68_mem_w)); // A12 = 1 : Waveform data
} }
void rf5c164_device::rf5c164_map(address_map &map)
{
// TODO: Not mirrored?
map(0x0000, 0x0008).w(FUNC(rf5c68_device::rf5c68_w)); // A12 = 0 : Register
map(0x0010, 0x001f).r(FUNC(rf5c68_device::rf5c68_r));
map(0x1000, 0x1fff).rw(FUNC(rf5c68_device::rf5c68_mem_r), FUNC(rf5c68_device::rf5c68_mem_w)); // A12 = 1 : Waveform data
}
//************************************************************************** //**************************************************************************
// LIVE DEVICE // LIVE DEVICE
@ -32,7 +40,7 @@ void rf5c68_device::map(address_map &map)
// rf5c68_device - constructor // rf5c68_device - constructor
//------------------------------------------------- //-------------------------------------------------
rf5c68_device::rf5c68_device(const machine_config & mconfig, device_type type, const char * tag, device_t * owner, u32 clock) rf5c68_device::rf5c68_device(const machine_config & mconfig, device_type type, const char * tag, device_t * owner, u32 clock, int output_bits)
: device_t(mconfig, type, tag, owner, clock) : device_t(mconfig, type, tag, owner, clock)
, device_sound_interface(mconfig, *this) , device_sound_interface(mconfig, *this)
, device_memory_interface(mconfig, *this) , device_memory_interface(mconfig, *this)
@ -41,22 +49,23 @@ rf5c68_device::rf5c68_device(const machine_config & mconfig, device_type type, c
, m_cbank(0) , m_cbank(0)
, m_wbank(0) , m_wbank(0)
, m_enable(0) , m_enable(0)
, m_output_bits(output_bits)
, m_sample_end_cb(*this) , m_sample_end_cb(*this)
{ {
} }
rf5c68_device::rf5c68_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) rf5c68_device::rf5c68_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
: rf5c68_device(mconfig, RF5C68, tag, owner, clock) : rf5c68_device(mconfig, RF5C68, tag, owner, clock, 10)
{ {
} }
//------------------------------------------------- //-------------------------------------------------
// rf5c68_device - constructor // rf5c164_device - constructor
//------------------------------------------------- //-------------------------------------------------
rf5c164_device::rf5c164_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) rf5c164_device::rf5c164_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
: rf5c68_device(mconfig, RF5C164, tag, owner, clock) : rf5c68_device(mconfig, RF5C164, tag, owner, clock, 16)
{ {
} }
@ -173,7 +182,12 @@ void rf5c68_device::sound_stream_update(sound_stream &stream, stream_sample_t **
} }
} }
/* now clamp and shift the result (output is only 10 bits) */ /*
now clamp and shift the result (output is only 10 bits for RF5C68, 16 bits for RF5C164)
reference: Mega CD hardware manual, RF5C68 datasheet
*/
const u8 output_shift = (m_output_bits > 16) ? 0 : (16 - m_output_bits);
const s32 output_nandmask = (1 << output_shift) - 1;
for (int j = 0; j < samples; j++) for (int j = 0; j < samples; j++)
{ {
stream_sample_t temp; stream_sample_t temp;
@ -181,12 +195,12 @@ void rf5c68_device::sound_stream_update(sound_stream &stream, stream_sample_t **
temp = left[j]; temp = left[j];
if (temp > 32767) temp = 32767; if (temp > 32767) temp = 32767;
else if (temp < -32768) temp = -32768; else if (temp < -32768) temp = -32768;
left[j] = temp & ~0x3f; left[j] = temp & ~output_nandmask;
temp = right[j]; temp = right[j];
if (temp > 32767) temp = 32767; if (temp > 32767) temp = 32767;
else if (temp < -32768) temp = -32768; else if (temp < -32768) temp = -32768;
right[j] = temp & ~0x3f; right[j] = temp & ~output_nandmask;
} }
} }
@ -198,7 +212,7 @@ void rf5c68_device::sound_stream_update(sound_stream &stream, stream_sample_t **
// TODO: RF5C164 only? // TODO: RF5C164 only?
u8 rf5c68_device::rf5c68_r(offs_t offset) u8 rf5c68_device::rf5c68_r(offs_t offset)
{ {
uint8_t shift; u8 shift;
m_stream->update(); m_stream->update();
shift = (offset & 1) ? 11 + 8 : 11; shift = (offset & 1) ? 11 + 8 : 11;

29
src/devices/sound/rf5c68.h
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@ -26,7 +26,7 @@ class rf5c68_device : public device_t,
public: public:
typedef device_delegate<void (int channel)> sample_end_cb_delegate; typedef device_delegate<void (int channel)> sample_end_cb_delegate;
rf5c68_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); rf5c68_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
template <typename... T> void set_end_callback(T &&... args) { m_sample_end_cb.set(std::forward<T>(args)...); } template <typename... T> void set_end_callback(T &&... args) { m_sample_end_cb.set(std::forward<T>(args)...); }
@ -38,7 +38,7 @@ public:
void map(address_map &map); void map(address_map &map);
protected: protected:
rf5c68_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock); rf5c68_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock, int output_bits);
// device-level overrides // device-level overrides
virtual void device_start() override; virtual void device_start() override;
@ -59,21 +59,22 @@ private:
{ {
pcm_channel() { } pcm_channel() { }
uint8_t enable = 0; u8 enable = 0;
uint8_t env = 0; u8 env = 0;
uint8_t pan = 0; u8 pan = 0;
uint8_t start = 0; u8 start = 0;
uint32_t addr = 0; u32 addr = 0;
uint16_t step = 0; u16 step = 0;
uint16_t loopst = 0; u16 loopst = 0;
}; };
memory_access<16, 0, 0, ENDIANNESS_LITTLE>::cache m_cache; memory_access<16, 0, 0, ENDIANNESS_LITTLE>::cache m_cache;
sound_stream* m_stream; sound_stream* m_stream;
pcm_channel m_chan[NUM_CHANNELS]; pcm_channel m_chan[NUM_CHANNELS];
uint8_t m_cbank; u8 m_cbank;
uint16_t m_wbank; u16 m_wbank;
uint8_t m_enable; u8 m_enable;
int m_output_bits;
sample_end_cb_delegate m_sample_end_cb; sample_end_cb_delegate m_sample_end_cb;
}; };
@ -81,7 +82,9 @@ private:
class rf5c164_device : public rf5c68_device class rf5c164_device : public rf5c68_device
{ {
public: public:
rf5c164_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); rf5c164_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
void rf5c164_map(address_map &map);
}; };
DECLARE_DEVICE_TYPE(RF5C68, rf5c68_device) DECLARE_DEVICE_TYPE(RF5C68, rf5c68_device)

2
src/mame/drivers/segas18.cpp
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@ -1375,7 +1375,7 @@ void segas18_state::system18(machine_config &config)
ym3438_device &ym2(YM3438(config, "ym2", 8000000)); ym3438_device &ym2(YM3438(config, "ym2", 8000000));
ym2.add_route(ALL_OUTPUTS, "mono", 0.40); ym2.add_route(ALL_OUTPUTS, "mono", 0.40);
rf5c68_device &rfsnd(RF5C68(config, "rfsnd", 10000000)); rf5c68_device &rfsnd(RF5C68(config, "rfsnd", 10000000)); // ASSP (RF)5C68A
rfsnd.add_route(ALL_OUTPUTS, "mono", 1.0); rfsnd.add_route(ALL_OUTPUTS, "mono", 1.0);
rfsnd.set_addrmap(0, &segas18_state::pcm_map); rfsnd.set_addrmap(0, &segas18_state::pcm_map);
} }

2
src/mame/drivers/segas32.cpp
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@ -2297,7 +2297,7 @@ void segas32_state::device_add_mconfig(machine_config &config)
ym2.add_route(0, "lspeaker", 0.40); ym2.add_route(0, "lspeaker", 0.40);
ym2.add_route(1, "rspeaker", 0.40); ym2.add_route(1, "rspeaker", 0.40);
rf5c68_device &rfsnd(RF5C68(config, "rfsnd", RFC_CLOCK/4)); rf5c68_device &rfsnd(RF5C68(config, "rfsnd", RFC_CLOCK/4)); // ASSP (RF)5C105 or Sega 315-5476A
rfsnd.add_route(0, "lspeaker", 0.55); rfsnd.add_route(0, "lspeaker", 0.55);
rfsnd.add_route(1, "rspeaker", 0.55); rfsnd.add_route(1, "rspeaker", 0.55);
rfsnd.set_addrmap(0, &segas32_state::rf5c68_map); rfsnd.set_addrmap(0, &segas32_state::rf5c68_map);

6
src/mame/machine/megacd.cpp
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@ -86,9 +86,7 @@ void sega_segacd_device::segacd_map(address_map &map)
map(0xfe0000, 0xfe3fff).rw(FUNC(sega_segacd_device::backupram_r), FUNC(sega_segacd_device::backupram_w)).umask16(0x00ff); // backup RAM, odd bytes only! map(0xfe0000, 0xfe3fff).rw(FUNC(sega_segacd_device::backupram_r), FUNC(sega_segacd_device::backupram_w)).umask16(0x00ff); // backup RAM, odd bytes only!
map(0xff0000, 0xff001f).w("rfsnd", FUNC(rf5c68_device::rf5c68_w)).umask16(0x00ff); // PCM, RF5C164 map(0xff0000, 0xff3fff).m(m_rfsnd, FUNC(rf5c164_device::rf5c164_map)).umask16(0x00ff); // PCM, RF5C164
map(0xff0020, 0xff003f).r("rfsnd", FUNC(rf5c68_device::rf5c68_r)).umask16(0x00ff);
map(0xff2000, 0xff3fff).rw("rfsnd", FUNC(rf5c68_device::rf5c68_mem_r), FUNC(rf5c68_device::rf5c68_mem_w)).umask16(0x00ff); // PCM, RF5C164
map(0xff8000, 0xff8001).rw(FUNC(sega_segacd_device::segacd_sub_led_ready_r), FUNC(sega_segacd_device::segacd_sub_led_ready_w)); map(0xff8000, 0xff8001).rw(FUNC(sega_segacd_device::segacd_sub_led_ready_r), FUNC(sega_segacd_device::segacd_sub_led_ready_w));
map(0xff8002, 0xff8003).rw(FUNC(sega_segacd_device::segacd_sub_memory_mode_r), FUNC(sega_segacd_device::segacd_sub_memory_mode_w)); map(0xff8002, 0xff8003).rw(FUNC(sega_segacd_device::segacd_sub_memory_mode_r), FUNC(sega_segacd_device::segacd_sub_memory_mode_w));
@ -314,7 +312,7 @@ void sega_segacd_device::device_add_mconfig(machine_config &config)
config.set_default_layout(layout_megacd); config.set_default_layout(layout_megacd);
RF5C68(config, m_rfsnd, SEGACD_CLOCK); // RF5C164! RF5C164(config, m_rfsnd, SEGACD_CLOCK); // or Sega 315-5476A
m_rfsnd->add_route( 0, ":lspeaker", 0.50 ); m_rfsnd->add_route( 0, ":lspeaker", 0.50 );
m_rfsnd->add_route( 1, ":rspeaker", 0.50 ); m_rfsnd->add_route( 1, ":rspeaker", 0.50 );
m_rfsnd->set_addrmap(0, &sega_segacd_device::segacd_pcm_map); m_rfsnd->set_addrmap(0, &sega_segacd_device::segacd_pcm_map);

2
src/mame/machine/megacd.h
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@ -111,7 +111,7 @@ protected:
required_device<cpu_device> m_scdcpu; required_device<cpu_device> m_scdcpu;
required_device<cpu_device> m_hostcpu; required_device<cpu_device> m_hostcpu;
required_device<rf5c68_device> m_rfsnd; required_device<rf5c164_device> m_rfsnd;
required_device<lc89510_temp_device> m_lc89510_temp; required_device<lc89510_temp_device> m_lc89510_temp;
required_device<timer_device> m_stopwatch_timer; required_device<timer_device> m_stopwatch_timer;
required_device<timer_device> m_stamp_timer; required_device<timer_device> m_stamp_timer;