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Merge pull request #5689 from cam900/sunsoft_5b

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ay8910.cpp : Device-fied sunsoft 5B sound hardware
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R. Belmont 2019-09-29 10:22:23 -04:00 committed by GitHub
commit 92f079726e
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3 changed files with 21 additions and 4 deletions
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2
src/devices/bus/nes/sunsoft.cpp
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@ -616,5 +616,5 @@ void nes_sunsoft_5_device::device_add_mconfig(machine_config &config)
// TODO: this is not how Sunsoft 5B clock signaling works!
// The board uses the CLK pin in reality, not hardcoded NTSC values!
YM2149(config, m_ym2149, (XTAL(21'477'272)/12)/2).add_route(ALL_OUTPUTS, "addon", 0.50); // divide by 2 for the internal divider
SUNSOFT_5B_SOUND(config, m_ym2149, XTAL(21'477'272)/12).add_route(ALL_OUTPUTS, "addon", 0.50);
}

10
src/devices/sound/ay8910.cpp
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@ -1405,7 +1405,7 @@ void ay8910_device::set_volume(int channel,int volume)
void ay8910_device::ay_set_clock(int clock)
{
// FIXME: this doesn't belong here, it should be an input pin exposed via devcb
if ((m_feature & PSG_PIN26_IS_CLKSEL) && (m_flags & YM2149_PIN26_LOW))
if (((m_feature & PSG_PIN26_IS_CLKSEL) && (m_flags & YM2149_PIN26_LOW)) || (m_feature & PSG_HAS_INTERNAL_DIVIDER))
m_channel->set_sample_rate((m_feature & PSG_HAS_EXPANDED_MODE) ? clock : clock / 16);
else
m_channel->set_sample_rate((m_feature & PSG_HAS_EXPANDED_MODE) ? clock * 2 : clock / 8);
@ -1742,3 +1742,11 @@ ymz294_device::ymz294_device(const machine_config &mconfig, const char *tag, dev
: ay8910_device(mconfig, YMZ294, tag, owner, clock, PSG_TYPE_YM, 1, 0)
{
}
DEFINE_DEVICE_TYPE(SUNSOFT_5B_SOUND, sunsoft_5b_sound_device, "sunsoft_5b_sound", "Sunsoft/Yamaha 5B 6630B (Sound)")
sunsoft_5b_sound_device::sunsoft_5b_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
: ay8910_device(mconfig, SUNSOFT_5B_SOUND, tag, owner, clock, PSG_TYPE_YM, 1, 0, PSG_HAS_INTERNAL_DIVIDER)
{
}

13
src/devices/sound/ay8910.h
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@ -66,8 +66,9 @@ public:
{
PSG_DEFAULT = 0x0,
PSG_PIN26_IS_CLKSEL = 0x1,
PSG_EXTENDED_ENVELOPE = 0x2,
PSG_HAS_EXPANDED_MODE = 0x4
PSG_HAS_INTERNAL_DIVIDER = 0x2,
PSG_EXTENDED_ENVELOPE = 0x4,
PSG_HAS_EXPANDED_MODE = 0x8
};
// construction/destruction
@ -389,5 +390,13 @@ public:
DECLARE_DEVICE_TYPE(YMZ294, ymz294_device)
class sunsoft_5b_sound_device : public ay8910_device
{
public:
sunsoft_5b_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
};
DECLARE_DEVICE_TYPE(SUNSOFT_5B_SOUND, sunsoft_5b_sound_device)
#endif // MAME_DEVICES_SOUND_AY8910_H