#pragma once #ifndef __YMF278B_H__ #define __YMF278B_H__ #include "devlegcy.h" #define YMF278B_STD_CLOCK (33868800) /* standard clock for OPL4 */ struct ymf278b_interface { void (*irq_callback)(device_t *device, int state); /* irq callback */ }; DECLARE_READ8_DEVICE_HANDLER( ymf278b_r ); DECLARE_WRITE8_DEVICE_HANDLER( ymf278b_w ); class ymf278b_device : public device_t, public device_sound_interface { public: ymf278b_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); ~ymf278b_device() { global_free(m_token); } // access to legacy token void *token() const { assert(m_token != NULL); return m_token; } protected: // device-level overrides virtual void device_config_complete(); virtual void device_start(); virtual void device_reset(); // sound stream update overrides virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples); private: // internal state void *m_token; }; extern const device_type YMF278B; #endif /* __YMF278B_H__ */