// license:BSD-3-Clause // copyright-holders:Nicola Salmoria /*************************************************************************** This code is used by the following module: timeplt.c pooyan.c rallyx.c (for locomotn) tutankhm.c rocnrope.c ***************************************************************************/ #include "emu.h" #include "includes/timeplt.h" #include "audio/timeplt.h" #include "machine/gen_latch.h" #include "speaker.h" #define MASTER_CLOCK XTAL(14'318'181) DEFINE_DEVICE_TYPE(TIMEPLT_AUDIO, timeplt_audio_device, "timplt_audio", "Time Pilot Audio") timeplt_audio_device::timeplt_audio_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, TIMEPLT_AUDIO, tag, owner, clock) , device_sound_interface(mconfig, *this) , m_soundcpu(*this, "tpsound") , m_soundlatch(*this, "soundlatch") , m_filter_0(*this, "filter.0.%u", 0) , m_filter_1(*this, "filter.1.%u", 0) , m_last_irq_state(0) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void timeplt_audio_device::device_start() { m_last_irq_state = 0; save_item(NAME(m_last_irq_state)); } /************************************* * * Sound timer * *************************************/ /* The timer clock which feeds the upper 4 bits of */ /* AY-3-8910 port A is based on the same clock */ /* feeding the sound CPU Z80. It is a divide by */ /* 5120, formed by a standard divide by 512, */ /* followed by a divide by 10 using a 4 bit */ /* bi-quinary count sequence. (See LS90 data sheet */ /* for an example). */ /* */ /* Bit 4 comes from the output of the divide by 1024 */ /* 0, 1, 0, 1, 0, 1, 0, 1, 0, 1 */ /* Bit 5 comes from the QC output of the LS90 producing a sequence of */ /* 0, 0, 1, 1, 0, 0, 1, 1, 1, 0 */ /* Bit 6 comes from the QD output of the LS90 producing a sequence of */ /* 0, 0, 0, 0, 1, 0, 0, 0, 0, 1 */ /* Bit 7 comes from the QA output of the LS90 producing a sequence of */ /* 0, 0, 0, 0, 0, 1, 1, 1, 1, 1 */ READ8_MEMBER( timeplt_audio_device::portB_r ) { static const int timeplt_timer[10] = { 0x00, 0x10, 0x20, 0x30, 0x40, 0x90, 0xa0, 0xb0, 0xa0, 0xd0 }; return timeplt_timer[(m_soundcpu->total_cycles() / 512) % 10]; } /************************************* * * Filter controls * *************************************/ void timeplt_audio_device::filter_w(filter_rc_device &device, int data) { int C = 0; if (data & 1) C += 220000; /* 220000pF = 0.220uF */ if (data & 2) C += 47000; /* 47000pF = 0.047uF */ device.filter_rc_set_RC(filter_rc_device::LOWPASS, 1000, 5100, 0, CAP_P(C)); } WRITE8_MEMBER( timeplt_audio_device::filter_w ) { filter_w(*m_filter_1[0], (offset >> 0) & 3); filter_w(*m_filter_1[1], (offset >> 2) & 3); filter_w(*m_filter_1[2], (offset >> 4) & 3); filter_w(*m_filter_0[0], (offset >> 6) & 3); filter_w(*m_filter_0[1], (offset >> 8) & 3); filter_w(*m_filter_0[2], (offset >> 10) & 3); } /************************************* * * External interfaces * *************************************/ WRITE8_MEMBER(timeplt_audio_device::sound_data_w) { m_soundlatch->write(space, 0, data); } WRITE_LINE_MEMBER(timeplt_audio_device::sh_irqtrigger_w) { if (m_last_irq_state == 0 && state) { /* setting bit 0 low then high triggers IRQ on the sound CPU */ m_soundcpu->set_input_line_and_vector(0, HOLD_LINE, 0xff); } m_last_irq_state = state; } WRITE_LINE_MEMBER(timeplt_audio_device::mute_w) { // controls pin 6 (DC audio mute) of LA4460 amplifier machine().sound().system_mute(state); } /************************************* * * Memory maps * *************************************/ ADDRESS_MAP_START(timeplt_audio_device::timeplt_sound_map) AM_RANGE(0x0000, 0x2fff) AM_ROM AM_RANGE(0x3000, 0x33ff) AM_MIRROR(0x0c00) AM_RAM AM_RANGE(0x4000, 0x4000) AM_MIRROR(0x0fff) AM_DEVREADWRITE("ay1", ay8910_device, data_r, data_w) AM_RANGE(0x5000, 0x5000) AM_MIRROR(0x0fff) AM_DEVWRITE("ay1", ay8910_device, address_w) AM_RANGE(0x6000, 0x6000) AM_MIRROR(0x0fff) AM_DEVREADWRITE("ay2", ay8910_device, data_r, data_w) AM_RANGE(0x7000, 0x7000) AM_MIRROR(0x0fff) AM_DEVWRITE("ay2", ay8910_device, address_w) AM_RANGE(0x8000, 0xffff) AM_WRITE(filter_w) ADDRESS_MAP_END ADDRESS_MAP_START(timeplt_audio_device::locomotn_sound_map) AM_RANGE(0x0000, 0x1fff) AM_ROM AM_RANGE(0x2000, 0x23ff) AM_MIRROR(0x0c00) AM_RAM AM_RANGE(0x3000, 0x3fff) AM_WRITE(filter_w) AM_RANGE(0x4000, 0x4000) AM_MIRROR(0x0fff) AM_DEVREADWRITE("ay1", ay8910_device, data_r, data_w) AM_RANGE(0x5000, 0x5000) AM_MIRROR(0x0fff) AM_DEVWRITE("ay1", ay8910_device, address_w) AM_RANGE(0x6000, 0x6000) AM_MIRROR(0x0fff) AM_DEVREADWRITE("ay2", ay8910_device, data_r, data_w) AM_RANGE(0x7000, 0x7000) AM_MIRROR(0x0fff) AM_DEVWRITE("ay2", ay8910_device, address_w) ADDRESS_MAP_END /************************************* * * Machine drivers * *************************************/ MACHINE_CONFIG_START(timeplt_audio_device::timeplt_sound) /* basic machine hardware */ MCFG_CPU_ADD("tpsound",Z80,MASTER_CLOCK/8) MCFG_CPU_PROGRAM_MAP(timeplt_sound_map) /* sound hardware */ MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_GENERIC_LATCH_8_ADD("soundlatch") MCFG_SOUND_ADD("ay1", AY8910, MASTER_CLOCK/8) MCFG_AY8910_PORT_A_READ_CB(DEVREAD8("soundlatch", generic_latch_8_device, read)) MCFG_AY8910_PORT_B_READ_CB(READ8(timeplt_audio_device, portB_r)) MCFG_SOUND_ROUTE(0, "filter.0.0", 0.60) MCFG_SOUND_ROUTE(1, "filter.0.1", 0.60) MCFG_SOUND_ROUTE(2, "filter.0.2", 0.60) MCFG_SOUND_ADD("ay2", AY8910, MASTER_CLOCK/8) MCFG_SOUND_ROUTE(0, "filter.1.0", 0.60) MCFG_SOUND_ROUTE(1, "filter.1.1", 0.60) MCFG_SOUND_ROUTE(2, "filter.1.2", 0.60) MCFG_FILTER_RC_ADD("filter.0.0", 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0) MCFG_FILTER_RC_ADD("filter.0.1", 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0) MCFG_FILTER_RC_ADD("filter.0.2", 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0) MCFG_FILTER_RC_ADD("filter.1.0", 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0) MCFG_FILTER_RC_ADD("filter.1.1", 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0) MCFG_FILTER_RC_ADD("filter.1.2", 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0) MACHINE_CONFIG_END MACHINE_CONFIG_START(timeplt_audio_device::locomotn_sound) timeplt_sound(config); /* basic machine hardware */ MCFG_CPU_MODIFY("tpsound") MCFG_CPU_PROGRAM_MAP(locomotn_sound_map) MACHINE_CONFIG_END //------------------------------------------------- // sound_stream_update - handle a stream update //------------------------------------------------- void timeplt_audio_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) { // should never get here fatalerror("sound_stream_update called; not applicable to legacy sound devices\n"); }