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Diffstat (limited to 'trunk/src/emu/sound/lmc1992.h')
-rw-r--r-- | trunk/src/emu/sound/lmc1992.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/trunk/src/emu/sound/lmc1992.h b/trunk/src/emu/sound/lmc1992.h new file mode 100644 index 00000000000..0cc9965ad37 --- /dev/null +++ b/trunk/src/emu/sound/lmc1992.h @@ -0,0 +1,117 @@ +/********************************************************************** + + LMC1992 Digitally-Controlled Stereo Tone and Volume Circuit with + Four-Channel Input-Selector emulation + + Copyright MESS Team. + Visit http://mamedev.org for licensing and usage restrictions. + +********************************************************************** + _____ _____ + Data 1 |* \_/ | 28 V+ + Clock 2 | | 27 Bypass + Enable 3 | | 26 Right Input 1 + Left Input 1 4 | | 25 Right Input 2 + Left Input 2 5 | | 24 Right Input 3 + Left Input 3 6 | | 23 Right Input 4 + Left Input 4 7 | LMC1992 | 22 Right Select Out + Left Select Out 8 | | 21 Right Select In + Left Select In 9 | | 20 Right Tone In + Left Tone In 10 | | 19 Right Tone Out + Left Tone Out 11 | | 18 Right Op Amp Out + Left Op Amp Out 12 | | 17 Right Rear Out + Left Rear Out 13 | | 16 Right Front Out + Left Front Out 14 |_____________| 15 Ground + +**********************************************************************/ + +#pragma once + +#ifndef __LMC1992__ +#define __LMC1992__ + +#include "emu.h" + + + +//************************************************************************** +// MACROS / CONSTANTS +//************************************************************************** + +enum +{ + LMC1992_LEFT_INPUT_1 = 0, + LMC1992_LEFT_INPUT_2, + LMC1992_LEFT_INPUT_3, + LMC1992_LEFT_INPUT_4, + LMC1992_RIGHT_INPUT_1, + LMC1992_RIGHT_INPUT_2, + LMC1992_RIGHT_INPUT_3, + LMC1992_RIGHT_INPUT_4 +}; + + + +//************************************************************************** +// INTERFACE CONFIGURATION MACROS +//************************************************************************** + +#define MCFG_LMC1992_ADD(_tag) \ + MCFG_DEVICE_ADD(_tag, LMC1992, 0) + + + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +// ======================> lmc1992_device + +class lmc1992_device : public device_t, + public device_sound_interface +{ +public: + // construction/destruction + lmc1992_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + + // inline configuration helpers + static void static_set_config(device_t &device, int clock2); + + DECLARE_WRITE_LINE_MEMBER( clock_w ); + DECLARE_WRITE_LINE_MEMBER( data_w ); + DECLARE_WRITE_LINE_MEMBER( enable_w ); + +protected: + // device-level overrides + virtual void device_start(); + + // internal callbacks + virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples); + +private: + inline void execute_command(int addr, int data); + + sound_stream *m_stream[4]; + + int m_enable; // enable latch + int m_data; // data latch + int m_clk; // clock latch + UINT16 m_si; // serial in shift register + + int m_input; // input select + int m_bass; // bass + int m_treble; // treble + int m_volume; // volume + int m_fader_rf; // right front fader + int m_fader_lf; // left front fader + int m_fader_rr; // right rear fader + int m_fader_lr; // left rear fader +}; + + +// device type definition +extern const device_type LMC1992; + + + +#endif |