// license:BSD-3-Clause // copyright-holders:Aaron Giles #pragma once #ifndef __MSM5205_H__ #define __MSM5205_H__ /* an interface for the MSM5205 and similar chips */ /* prescaler selector defines */ /* MSM5205 default master clock is 384KHz */ #define MSM5205_S96_3B 0 /* prescaler 1/96(4KHz) , data 3bit */ #define MSM5205_S48_3B 1 /* prescaler 1/48(8KHz) , data 3bit */ #define MSM5205_S64_3B 2 /* prescaler 1/64(6KHz) , data 3bit */ #define MSM5205_SEX_3B 3 /* VCLK slave mode , data 3bit */ #define MSM5205_S96_4B 4 /* prescaler 1/96(4KHz) , data 4bit */ #define MSM5205_S48_4B 5 /* prescaler 1/48(8KHz) , data 4bit */ #define MSM5205_S64_4B 6 /* prescaler 1/64(6KHz) , data 4bit */ #define MSM5205_SEX_4B 7 /* VCLK slave mode , data 4bit */ /* MSM6585 default master clock is 640KHz */ #define MSM6585_S160 (4+8) /* prescaler 1/160(4KHz), data 4bit */ #define MSM6585_S40 (5+8) /* prescaler 1/40(16KHz), data 4bit */ #define MSM6585_S80 (6+8) /* prescaler 1/80 (8KHz), data 4bit */ #define MSM6585_S20 (7+8) /* prescaler 1/20(32KHz), data 4bit */ #define MCFG_MSM5205_PRESCALER_SELECTOR(_select) \ msm5205_device::set_prescaler_selector(*device, _select); #define MCFG_MSM5205_VCLK_CB(_devcb) \ devcb = &msm5205_device::set_vclk_callback(*device, DEVCB_##_devcb); #define MCFG_MSM6585_PRESCALER_SELECTOR(_select) \ msm6585_device::set_prescaler_selector(*device, _select); #define MCFG_MSM6585_VCLK_CB(_devcb) \ devcb = &msm6585_device::set_vclk_callback(*device, DEVCB_##_devcb); class msm5205_device : public device_t, public device_sound_interface { public: msm5205_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); msm5205_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source); ~msm5205_device() {} static void set_prescaler_selector(device_t &device, int select) { downcast(device).m_select = select; } template static devcb_base &set_vclk_callback(device_t &device, _Object object) { return downcast(device).m_vclk_cb.set_callback(object); } // reset signal should keep for 2cycle of VCLK void reset_w(int reset); // adpcmata is latched after vclk_interrupt callback void data_w(int data); // VCLK slave mode option // if VCLK and reset or data is changed at the same time, // call vclk_w after data_w and reset_w. void vclk_w(int vclk); // option , selected pin seletor void playmode_w(int select); void set_volume(int volume); void change_clock_w(INT32 clock); protected: // device-level overrides virtual void device_start(); virtual void device_reset(); TIMER_CALLBACK_MEMBER(vclk_callback); // sound stream update overrides virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples); void compute_tables(); // internal state sound_stream * m_stream; /* number of stream system */ INT32 m_mod_clock; /* clock rate */ emu_timer *m_timer; /* VCLK callback timer */ INT32 m_data; /* next adpcm data */ INT32 m_vclk; /* vclk signal (external mode) */ INT32 m_reset; /* reset pin signal */ INT32 m_prescaler; /* prescaler selector S1 and S2 */ INT32 m_bitwidth; /* bit width selector -3B/4B */ INT32 m_signal; /* current ADPCM signal */ INT32 m_step; /* current ADPCM step */ int m_diff_lookup[49*16]; int m_select; devcb_write_line m_vclk_cb; }; extern const device_type MSM5205; class msm6585_device : public msm5205_device { public: msm6585_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); // sound stream update overrides virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples); }; extern const device_type MSM6585; #endif /* __MSM5205_H__ */