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+/**********************************************************************
+
+ 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