/********************************************************* Konami 054539 PCM Sound Chip *********************************************************/ #pragma once #ifndef __K054539_H__ #define __K054539_H__ #define MCFG_K054539_ADD(_tag, _clock, _interface) \ MCFG_DEVICE_ADD(_tag, K054539, _clock) \ k054539_device::static_set_interface(*device, _interface); struct k054539_interface { const char *rgnoverride; void (*apan)(device_t *, double, double); /* Callback for analog output mixing levels (0..1 for each channel) */ void (*irq)(device_t *); }; //* control flags, may be set at DRIVER_INIT(). #define K054539_RESET_FLAGS 0 #define K054539_REVERSE_STEREO 1 #define K054539_DISABLE_REVERB 2 #define K054539_UPDATE_AT_KEYON 4 void k054539_init_flags(device_t *device, int flags); void k054539_set_gain(device_t *device, int channel, double gain); class k054539_device : public device_t, public device_sound_interface, public k054539_interface { public: enum { RESET_FLAGS = 0, REVERSE_STEREO = 1, DISABLE_REVERB = 2, UPDATE_AT_KEYON = 4 }; // construction/destruction k054539_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); // static configuration helpers static void static_set_interface(device_t &device, const k054539_interface &interface); DECLARE_WRITE8_MEMBER(write); DECLARE_READ8_MEMBER(read); void init_flags(int flags); /* Note that the eight PCM channels of a K054539 do not have separate volume controls. Considering the global attenuation equation may not be entirely accurate, k054539_set_gain() provides means to control channel gain. It can be called anywhere but preferrably from DRIVER_INIT(). Parameters: channel : 0 - 7 gain : 0.0=silent, 1.0=no gain, 2.0=twice as loud, etc. */ void set_gain(int channel, double gain); protected: // device-level overrides virtual void device_start(); virtual void device_reset(); virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr); // device_sound_interface overrides virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples); private: struct channel { UINT32 pos; UINT32 pfrac; INT32 val; INT32 pval; }; double voltab[256]; double pantab[0xf]; double gain[8]; UINT8 posreg_latch[8][3]; int flags; unsigned char regs[0x230]; unsigned char *ram; int reverb_pos; INT32 cur_ptr; int cur_limit; unsigned char *cur_zone; unsigned char *rom; UINT32 rom_size; UINT32 rom_mask; channel channels[8]; sound_stream *stream; bool regupdate(); void keyon(int channel); void keyoff(int channel); void init_chip(); void reset_zones(); }; extern const device_type K054539; #endif /* __K054539_H__ */