/********************************************************************** 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