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https://github.com/holub/mame
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Imported LMC1992 audio mixer from MESS. (no whatsnew)
This commit is contained in:
Curt Coder
parent
b2c353c7b6
commit
92ebabc84f
2
.gitattributes
vendored
2
.gitattributes
vendored
@ -1068,6 +1068,8 @@ src/emu/sound/k054539.c svneol=native#text/plain
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src/emu/sound/k054539.h svneol=native#text/plain
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src/emu/sound/k054539.h svneol=native#text/plain
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src/emu/sound/k056800.c svneol=native#text/plain
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src/emu/sound/k056800.c svneol=native#text/plain
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src/emu/sound/k056800.h svneol=native#text/plain
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src/emu/sound/k056800.h svneol=native#text/plain
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src/emu/sound/lmc1992.c svneol=native#text/plain
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src/emu/sound/lmc1992.h svneol=native#text/plain
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src/emu/sound/mas3507d.c svneol=native#text/plain
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src/emu/sound/mas3507d.c svneol=native#text/plain
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src/emu/sound/mas3507d.h svneol=native#text/plain
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src/emu/sound/mas3507d.h svneol=native#text/plain
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src/emu/sound/mos6560.c svneol=native#text/plain
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src/emu/sound/mos6560.c svneol=native#text/plain
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271
src/emu/sound/lmc1992.c
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271
src/emu/sound/lmc1992.c
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@ -0,0 +1,271 @@
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/**********************************************************************
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LMC1992 Digitally-Controlled Stereo Tone and Volume Circuit with
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Four-Channel Input-Selector emulation
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Copyright MESS Team.
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Visit http://mamedev.org for licensing and usage restrictions.
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**********************************************************************/
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/*
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TODO:
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- inputs
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- outputs
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- bass
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- treble
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- volume
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- balance
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*/
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#include "lmc1992.h"
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//**************************************************************************
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// MACROS / CONSTANTS
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//**************************************************************************
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#define LOG 0
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#define MICROWIRE_DEVICE_ADDRESS 2
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enum
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{
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FUNCTION_INPUT_SELECT = 0,
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FUNCTION_BASS,
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FUNCTION_TREBLE,
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FUNCTION_VOLUME,
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FUNCTION_RIGHT_FRONT_FADER,
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FUNCTION_LEFT_FRONT_FADER,
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FUNCTION_RIGHT_REAR_FADER,
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FUNCTION_LEFT_REAR_FADER
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};
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enum
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{
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INPUT_SELECT_OPEN = 0,
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INPUT_SELECT_INPUT1,
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INPUT_SELECT_INPUT2,
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INPUT_SELECT_INPUT3,
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INPUT_SELECT_INPUT4
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};
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//**************************************************************************
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// GLOBAL VARIABLES
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//**************************************************************************
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// devices
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const device_type LMC1992 = lmc1992_device_config::static_alloc_device_config;
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//**************************************************************************
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// DEVICE CONFIGURATION
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//**************************************************************************
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//-------------------------------------------------
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// lmc1992_device_config - constructor
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//-------------------------------------------------
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lmc1992_device_config::lmc1992_device_config(const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock)
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: device_config(mconfig, static_alloc_device_config, "LMC1992", tag, owner, clock),
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device_config_sound_interface(mconfig, *this)
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{
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}
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//-------------------------------------------------
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// static_alloc_device_config - allocate a new
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// configuration object
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//-------------------------------------------------
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device_config *lmc1992_device_config::static_alloc_device_config(const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock)
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{
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return global_alloc(lmc1992_device_config(mconfig, tag, owner, clock));
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}
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//-------------------------------------------------
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// alloc_device - allocate a new device object
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//-------------------------------------------------
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device_t *lmc1992_device_config::alloc_device(running_machine &machine) const
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{
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return auto_alloc(machine, lmc1992_device(machine, *this));
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}
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//**************************************************************************
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// INLINE HELPERS
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//**************************************************************************
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//-------------------------------------------------
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// execute_command -
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//-------------------------------------------------
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inline void lmc1992_device::execute_command(int addr, int data)
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{
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switch (addr)
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{
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case FUNCTION_INPUT_SELECT:
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if (data == INPUT_SELECT_OPEN)
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{
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if (LOG) logerror("LMC1992 '%s' Input Select : OPEN\n", tag());
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}
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else
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{
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if (LOG) logerror("LMC1992 '%s' Input Select : INPUT%u\n", tag(), data);
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}
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m_input = data;
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break;
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case FUNCTION_BASS:
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if (LOG) logerror("LMC1992 '%s' Bass : %i dB\n", tag(), -40 + (data * 2));
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m_bass = data;
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break;
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case FUNCTION_TREBLE:
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if (LOG) logerror("LMC1992 '%s' Treble : %i dB\n", tag(), -40 + (data * 2));
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m_treble = data;
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break;
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case FUNCTION_VOLUME:
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if (LOG) logerror("LMC1992 '%s' Volume : %i dB\n", tag(), -80 + (data * 2));
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m_volume = data;
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break;
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case FUNCTION_RIGHT_FRONT_FADER:
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if (LOG) logerror("LMC1992 '%s' Right Front Fader : %i dB\n", tag(), -40 + (data * 2));
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m_fader_rf = data;
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break;
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case FUNCTION_LEFT_FRONT_FADER:
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if (LOG) logerror("LMC1992 '%s' Left Front Fader : %i dB\n", tag(), -40 + (data * 2));
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m_fader_lf = data;
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break;
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case FUNCTION_RIGHT_REAR_FADER:
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if (LOG) logerror("LMC1992 '%s' Right Rear Fader : %i dB\n", tag(), -40 + (data * 2));
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m_fader_rr = data;
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break;
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case FUNCTION_LEFT_REAR_FADER:
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if (LOG) logerror("LMC1992 '%s' Left Rear Fader : %i dB\n", tag(), -40 + (data * 2));
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m_fader_lr = data;
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break;
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}
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}
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// lmc1992_device - constructor
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//-------------------------------------------------
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lmc1992_device::lmc1992_device(running_machine &_machine, const lmc1992_device_config &config)
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: device_t(_machine, config),
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device_sound_interface(_machine, config, *this),
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m_config(config)
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{
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}
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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void lmc1992_device::device_start()
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{
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// create sound streams
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// register for state saving
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save_item(NAME(m_enable));
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save_item(NAME(m_data));
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save_item(NAME(m_clock));
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save_item(NAME(m_si));
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save_item(NAME(m_input));
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save_item(NAME(m_bass));
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save_item(NAME(m_treble));
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save_item(NAME(m_volume));
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save_item(NAME(m_fader_rf));
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save_item(NAME(m_fader_lf));
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save_item(NAME(m_fader_rr));
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save_item(NAME(m_fader_lr));
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}
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//-------------------------------------------------
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// sound_stream_update - handle update requests for
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// our sound stream
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//-------------------------------------------------
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void lmc1992_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples)
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{
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}
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//-------------------------------------------------
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// clock_w -
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//-------------------------------------------------
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WRITE_LINE_MEMBER( lmc1992_device::clock_w )
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{
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if ((m_enable == 0) && ((m_clock == 0) && (state == 1)))
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{
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m_si >>= 1;
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m_si = m_si & 0x7fff;
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if (m_data)
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{
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m_si &= 0x8000;
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}
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}
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m_clock = state;
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}
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//-------------------------------------------------
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// data_w -
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//-------------------------------------------------
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WRITE_LINE_MEMBER( lmc1992_device::data_w )
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{
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m_data = state;
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}
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//-------------------------------------------------
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// enable_w -
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//-------------------------------------------------
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WRITE_LINE_MEMBER( lmc1992_device::enable_w )
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{
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if ((m_enable == 0) && (state == 1))
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{
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UINT8 device_addr = (m_si & 0xc000) >> 14;
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UINT8 addr = (m_si & 0x3800) >> 11;
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UINT8 data = (m_si & 0x07e0) >> 5;
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if (device_addr == MICROWIRE_DEVICE_ADDRESS)
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{
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execute_command(addr, data);
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}
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}
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m_enable = state;
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}
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138
src/emu/sound/lmc1992.h
Normal file
138
src/emu/sound/lmc1992.h
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@ -0,0 +1,138 @@
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/**********************************************************************
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LMC1992 Digitally-Controlled Stereo Tone and Volume Circuit with
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Four-Channel Input-Selector emulation
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Copyright MESS Team.
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Visit http://mamedev.org for licensing and usage restrictions.
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**********************************************************************
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_____ _____
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Data 1 |* \_/ | 28 V+
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Clock 2 | | 27 Bypass
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Enable 3 | | 26 Right Input 1
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Left Input 1 4 | | 25 Right Input 2
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Left Input 2 5 | | 24 Right Input 3
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Left Input 3 6 | | 23 Right Input 4
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Left Input 4 7 | LMC1992 | 22 Right Select Out
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Left Select Out 8 | | 21 Right Select In
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Left Select In 9 | | 20 Right Tone In
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Left Tone In 10 | | 19 Right Tone Out
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Left Tone Out 11 | | 18 Right Op Amp Out
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Left Op Amp Out 12 | | 17 Right Rear Out
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Left Rear Out 13 | | 16 Right Front Out
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Left Front Out 14 |_____________| 15 Ground
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**********************************************************************/
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#pragma once
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#ifndef __LMC1992__
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#define __LMC1992__
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#include "emu.h"
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//**************************************************************************
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// MACROS / CONSTANTS
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//**************************************************************************
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enum
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{
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LMC1992_LEFT_INPUT_1 = 0,
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LMC1992_LEFT_INPUT_2,
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LMC1992_LEFT_INPUT_3,
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LMC1992_LEFT_INPUT_4,
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LMC1992_RIGHT_INPUT_1,
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LMC1992_RIGHT_INPUT_2,
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LMC1992_RIGHT_INPUT_3,
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LMC1992_RIGHT_INPUT_4
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};
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//**************************************************************************
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// INTERFACE CONFIGURATION MACROS
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//**************************************************************************
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#define MCFG_LMC1992_ADD(_tag) \
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MCFG_DEVICE_ADD(_tag, LMC1992, 0)
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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// ======================> lmc1992_device_config
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class lmc1992_device_config : public device_config,
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public device_config_sound_interface
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{
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friend class lmc1992_device;
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// construction/destruction
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lmc1992_device_config(const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock);
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public:
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// allocators
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static device_config *static_alloc_device_config(const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock);
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virtual device_t *alloc_device(running_machine &machine) const;
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// inline configuration helpers
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static void static_set_config(device_config *device, int clock2);
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};
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// ======================> lmc1992_device
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class lmc1992_device : public device_t,
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public device_sound_interface
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{
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friend class lmc1992_device_config;
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// construction/destruction
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lmc1992_device(running_machine &_machine, const lmc1992_device_config &_config);
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public:
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DECLARE_WRITE_LINE_MEMBER( clock_w );
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DECLARE_WRITE_LINE_MEMBER( data_w );
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DECLARE_WRITE_LINE_MEMBER( enable_w );
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protected:
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// device-level overrides
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virtual void device_start();
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// internal callbacks
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virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples);
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private:
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inline void execute_command(int addr, int data);
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sound_stream *m_stream[4];
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int m_enable; // enable latch
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int m_data; // data latch
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int m_clock; // clock latch
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UINT16 m_si; // serial in shift register
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int m_input; // input select
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int m_bass; // bass
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int m_treble; // treble
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int m_volume; // volume
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int m_fader_rf; // right front fader
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int m_fader_lf; // left front fader
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int m_fader_rr; // right rear fader
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int m_fader_lr; // left rear fader
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const lmc1992_device_config &m_config;
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};
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// device type definition
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extern const device_type LMC1992;
|
||||||
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||||||
|
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||||||
|
|
||||||
|
#endif
|
||||||
@ -280,6 +280,16 @@ endif
|
|||||||
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|
||||||
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||||||
|
|
||||||
|
#-------------------------------------------------
|
||||||
|
# LMC1992 mixer chip
|
||||||
|
#-------------------------------------------------
|
||||||
|
|
||||||
|
ifneq ($(filter LMC1992,$(SOUNDS)),)
|
||||||
|
SOUNDOBJS += $(SOUNDOBJ)/lmc1992.o
|
||||||
|
endif
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
#-------------------------------------------------
|
#-------------------------------------------------
|
||||||
# MAS 3507D MPEG 1/2 Layer 2/3 Audio Decoder
|
# MAS 3507D MPEG 1/2 Layer 2/3 Audio Decoder
|
||||||
#-------------------------------------------------
|
#-------------------------------------------------
|
||||||
|
|||||||
@ -229,6 +229,7 @@ SOUNDS += MOS656X
|
|||||||
SOUNDS += S2636
|
SOUNDS += S2636
|
||||||
SOUNDS += ASC
|
SOUNDS += ASC
|
||||||
SOUNDS += MAS3507D
|
SOUNDS += MAS3507D
|
||||||
|
SOUNDS += LMC1992
|
||||||
|
|
||||||
|
|
||||||
#-------------------------------------------------
|
#-------------------------------------------------
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user