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Diffstat (limited to 'src/devices/sound/ym3526.h')
-rw-r--r-- | src/devices/sound/ym3526.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/src/devices/sound/ym3526.h b/src/devices/sound/ym3526.h new file mode 100644 index 00000000000..496936befc9 --- /dev/null +++ b/src/devices/sound/ym3526.h @@ -0,0 +1,53 @@ +// license:BSD-3-Clause +// copyright-holders:Aaron Giles + +#ifndef MAME_SOUND_YM3526_H +#define MAME_SOUND_YM3526_H + +#pragma once + +#include "ymfm.h" + + +// ======================> ym3526_device + +DECLARE_DEVICE_TYPE(YM3526, ym3526_device); + +class ym3526_device : public device_t, public device_sound_interface +{ +public: + // YM3526 is OPL + using fm_engine = ymopl_engine; + + // constructor + ym3526_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock, device_type type = YM3526); + + // configuration helpers + auto irq_handler() { return m_fm.irq_handler(); } + + // read access + u8 status_r(); // A0=0 + u8 read(offs_t offset); + + // write access + void address_w(u8 data); // A0=0 + void data_w(u8 data); // A0=1 + void write(offs_t offset, u8 data); + +protected: + // device-level overrides + virtual void device_start() override; + virtual void device_reset() override; + virtual void device_clock_changed() override; + + // sound overrides + virtual void sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) override; + + // internal state + u8 m_address; // address register + sound_stream *m_stream; // sound stream + fm_engine m_fm; // core FM engine +}; + + +#endif // MAME_SOUND_YM3526_H |