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Diffstat (limited to 'trunk/src/emu/sound/mas3507d.h')
-rw-r--r-- | trunk/src/emu/sound/mas3507d.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/trunk/src/emu/sound/mas3507d.h b/trunk/src/emu/sound/mas3507d.h new file mode 100644 index 00000000000..4f2c12eadb0 --- /dev/null +++ b/trunk/src/emu/sound/mas3507d.h @@ -0,0 +1,66 @@ +#pragma once + +#ifndef __MAS3507D_H__ +#define __MAS3507D_H__ + + +//************************************************************************** +// INTERFACE CONFIGURATION MACROS +//************************************************************************** + +#define MCFG_MAS3507D_ADD(_tag) \ + MCFG_DEVICE_ADD(_tag, MAS3507D, 0) + +#define MCFG_MAS3507D_REPLACE(_tag) \ + MCFG_DEVICE_REPLACE(_tag, MAS3507D, 0) + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +class mas3507d_device : public device_t, public device_sound_interface +{ +public: + // construction/destruction + mas3507d_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + + int i2c_scl_r(); + int i2c_sda_r(); + void i2c_scl_w(bool line); + void i2c_sda_w(bool line); + +protected: + virtual void device_start(); + virtual void device_reset(); + virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples); + +private: + enum { IDLE, STARTED, NAK, ACK, ACK2 } i2c_bus_state; + enum { UNKNOWN, VALIDATED, WRONG } i2c_bus_address; + + bool i2c_scli, i2c_sclo, i2c_sdai, i2c_sdao; + int i2c_bus_curbit; + UINT8 i2c_bus_curval; + + void i2c_nak(); + bool i2c_device_got_address(UINT8 address); + void i2c_device_got_byte(UINT8 byte); + void i2c_device_got_stop(); + + + enum { UNDEFINED, CONTROL, DATA, BAD } i2c_subdest; + enum { CMD_BAD, CMD_RUN, CMD_READ_CTRL, CMD_WRITE_REG, CMD_WRITE_MEM, CMD_READ_REG, CMD_READ_MEM } i2c_command; + int i2c_bytecount; + UINT32 i2c_io_bank, i2c_io_adr, i2c_io_count, i2c_io_val; + + + void mem_write(int bank, UINT32 adr, UINT32 val); + void run_program(UINT32 adr); + void reg_write(UINT32 adr, UINT32 val); +}; + + +// device type definition +extern const device_type MAS3507D; + +#endif /* __MAS3507D_H__ */ |