52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
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#pragma once
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/* an interface for the OKIM6295 and similar chips */
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/*
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Note about the playback frequency: the external clock is internally divided,
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depending on pin 7, by 132 (high) or 165 (low).
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*/
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/*typedef struct _okim6295_interface okim6295_interface;
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struct _okim6295_interface
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{
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int pin7;
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};
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extern const okim6295_interface okim6295_interface_pin7high;
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extern const okim6295_interface okim6295_interface_pin7low;*/
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//void okim6295_set_bank_base(running_device *device, int base);
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//void okim6295_set_pin7(running_device *device, int pin7);
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void okim6295_update(void *chip, stream_sample_t **outputs, int samples);
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int device_start_okim6295(void **chip, int clock);
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void device_stop_okim6295(void *chip);
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void device_reset_okim6295(void *chip);
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//READ8_DEVICE_HANDLER( okim6295_r );
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//WRITE8_DEVICE_HANDLER( okim6295_w );
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void okim6295_w(void *chip, offs_t offset, UINT8 data);
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void okim6295_write_rom(void *chip, offs_t ROMSize, offs_t DataStart, offs_t DataLength,
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const UINT8* ROMData);
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void okim6295_set_mute_mask(void *chip, UINT32 MuteMask);
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void okim6295_set_srchg_cb(void *chip, SRATE_CALLBACK CallbackFunc, void* DataPtr);
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/*
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To help the various custom ADPCM generators out there,
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the following routines may be used.
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*/
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struct adpcm_state
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{
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INT32 signal;
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INT32 step;
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};
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void reset_adpcm(struct adpcm_state *state);
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INT16 clock_adpcm(struct adpcm_state *state, UINT8 nibble);
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//DEVICE_GET_INFO( okim6295 );
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//#define SOUND_OKIM6295 DEVICE_GET_INFO_NAME( okim6295 )
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