// ATI Stereo F/X // // TODO: UART is connected to MIDI port #include "isa_stereo_fx.h" const device_type ISA8_STEREO_FX = &device_creator; static const ym3812_interface pc_ym3812_interface = { DEVCB_NULL }; READ8_MEMBER( stereo_fx_device::dev_dsp_data_r ) { m_data_in = false; return m_in_byte; } WRITE8_MEMBER( stereo_fx_device::dev_dsp_data_w ) { m_data_out = true; m_out_byte = data; } // port 1 is the left DAC but is written and read bitwise during capture READ8_MEMBER( stereo_fx_device::p1_r ) { return 0x80; } READ8_MEMBER( stereo_fx_device::p3_r ) { UINT8 ret = 0; ret |= m_data_out << 2; // INT0 ret |= m_data_in << 3; // INT1 ret |= m_t0 << 4; // T0 ret |= m_t1 << 5; // T1 return ret; } WRITE8_MEMBER( stereo_fx_device::p3_w ) { m_t1 = (data & 0x20)&&1; } WRITE8_MEMBER( stereo_fx_device::dev_host_irq_w ) { m_isa->irq5_w(1); } WRITE8_MEMBER( stereo_fx_device::raise_drq_w ) { m_isa->drq1_w(1); } /* port 0x20 - in ROM (usually) stored in RAM 0x22 * bit0 - * bit1 - * bit2 - * bit3 - * bit4 - * bit5 - * bit6 - * bit7 - */ WRITE8_MEMBER( stereo_fx_device::port20_w ) { m_port20 = data; } /* port 0x00 - in ROM (usually) stored in RAM 0x21 * bit0 - bits 0-4 related to sample rate * bit1 - are set to 0x09-0x1e * bit2 - * bit3 - * bit4 - * bit5 - * bit6 - * bit7 - */ WRITE8_MEMBER( stereo_fx_device::port00_w ) { m_port00 = data; } ROM_START( stereo_fx ) ROM_REGION( 0x8000, "stereo_fx_cpu", 0 ) ROM_LOAD("ati_stereo_fx.bin", 0x0000, 0x8000, CRC(1BEBFFA6) SHA1(e66c2619a6c05199554b5702d67877ae3799d415)) ROM_END static ADDRESS_MAP_START(stereo_fx_io, AS_IO, 8, stereo_fx_device) AM_RANGE(0xFF00, 0xFF00) AM_WRITE(port00_w) AM_RANGE(0xFF10, 0xFF10) AM_DEVWRITE("dacr", dac_device, write_unsigned8) AM_RANGE(0xFF20, 0xFF20) AM_WRITE(port20_w) //AM_RANGE(0xFF30, 0xFF30) AM_WRITE() // used only on reset and undocumented cmd 0xc4 AM_RANGE(0xFF40, 0xFF40) AM_READWRITE(dev_dsp_data_r, dev_dsp_data_w) AM_RANGE(0xFF50, 0xFF50) AM_WRITE(raise_drq_w) AM_RANGE(0xFF60, 0xFF60) AM_WRITE(dev_host_irq_w) AM_RANGE(MCS51_PORT_P1, MCS51_PORT_P1) AM_READ(p1_r) AM_DEVWRITE("dacl", dac_device, write_unsigned8) AM_RANGE(MCS51_PORT_P3, MCS51_PORT_P3) AM_READWRITE(p3_r, p3_w) ADDRESS_MAP_END static ADDRESS_MAP_START(stereo_fx_rom, AS_PROGRAM, 8, stereo_fx_device) AM_RANGE(0x0000, 0x7fff) AM_ROM ADDRESS_MAP_END static MACHINE_CONFIG_FRAGMENT( stereo_fx ) MCFG_CPU_ADD("stereo_fx_cpu", I80C31, XTAL_30MHz) MCFG_CPU_IO_MAP(stereo_fx_io) MCFG_CPU_PROGRAM_MAP(stereo_fx_rom) MCFG_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker") MCFG_SOUND_ADD("ym3812", YM3812, XTAL_3_579545MHz) MCFG_SOUND_CONFIG(pc_ym3812_interface) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "lspeaker", 1.00) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 1.00) /* no CM/S support (empty sockets) */ MCFG_SOUND_ADD("dacl", DAC, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "lspeaker", 1.00) MCFG_SOUND_ADD("dacr", DAC, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 1.00) MCFG_PC_JOY_ADD("joy") MACHINE_CONFIG_END const rom_entry *stereo_fx_device::device_rom_region() const { return ROM_NAME( stereo_fx ); } machine_config_constructor stereo_fx_device::device_mconfig_additions() const { return MACHINE_CONFIG_NAME( stereo_fx ); } READ8_MEMBER( stereo_fx_device::dsp_data_r ) { m_data_out = false; return m_out_byte; } WRITE8_MEMBER( stereo_fx_device::dsp_cmd_w ) { m_data_in = true; m_in_byte = data; } UINT8 stereo_fx_device::dack_r(int line) { m_data_out = false; m_isa->drq1_w(0); return m_out_byte; } void stereo_fx_device::dack_w(int line, UINT8 data) { m_data_in = true; m_isa->drq1_w(0); m_in_byte = data; } WRITE8_MEMBER( stereo_fx_device::dsp_reset_w ) { device_reset(); m_cpu->set_input_line(INPUT_LINE_RESET, PULSE_LINE); } READ8_MEMBER( stereo_fx_device::dsp_wbuf_status_r ) { return m_data_in << 7; } READ8_MEMBER( stereo_fx_device::dsp_rbuf_status_r ) { m_isa->irq5_w(0); return m_data_out << 7; } WRITE8_MEMBER( stereo_fx_device::invalid_w ) { logerror("stereo fx: invalid port write\n"); } READ8_MEMBER( stereo_fx_device::invalid_r ) { logerror("stereo fx: invalid port read\n"); return 0xff; } stereo_fx_device::stereo_fx_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, ISA8_STEREO_FX, "ATI Stereo F/X Audio Adapter", tag, owner, clock, "stereo_fx", __FILE__), device_isa8_card_interface(mconfig, *this), m_dacl(*this, "dacl"), m_dacr(*this, "dacr"), m_joy(*this, "joy"), m_cpu(*this, "stereo_fx_cpu") { m_t1 = 0; } void stereo_fx_device::device_start() { set_isa_device(); m_isa->install_device(0x0200, 0x0207, 0, 0, read8_delegate(FUNC(pc_joy_device::joy_port_r), subdevice("joy")), write8_delegate(FUNC(pc_joy_device::joy_port_w), subdevice("joy"))); m_isa->install_device(0x0226, 0x0227, 0, 0, read8_delegate(FUNC(stereo_fx_device::invalid_r), this), write8_delegate(FUNC(stereo_fx_device::dsp_reset_w), this)); m_isa->install_device(0x022a, 0x022b, 0, 0, read8_delegate(FUNC(stereo_fx_device::dsp_data_r), this), write8_delegate(FUNC(stereo_fx_device::invalid_w), this) ); m_isa->install_device(0x022c, 0x022d, 0, 0, read8_delegate(FUNC(stereo_fx_device::dsp_wbuf_status_r), this), write8_delegate(FUNC(stereo_fx_device::dsp_cmd_w), this) ); m_isa->install_device(0x022e, 0x022f, 0, 0, read8_delegate(FUNC(stereo_fx_device::dsp_rbuf_status_r), this), write8_delegate(FUNC(stereo_fx_device::invalid_w), this) ); m_isa->install_device(subdevice("ym3812"), 0x0388, 0x0389, 0, 0, FUNC(ym3812_r), FUNC(ym3812_w) ); m_isa->install_device(subdevice("ym3812"), 0x0228, 0x0229, 0, 0, FUNC(ym3812_r), FUNC(ym3812_w) ); m_timer = timer_alloc(); m_timer->adjust(attotime::from_hz(2000000), 0, attotime::from_hz(2000000)); m_isa->set_dma_channel(1, this, FALSE); } void stereo_fx_device::device_reset() { m_isa->drq1_w(0); m_isa->irq5_w(0); m_data_out = false; m_data_in = false; m_port20 = 0; m_port00 = 0; m_t0 = CLEAR_LINE; } void stereo_fx_device::device_timer(emu_timer &timer, device_timer_id tid, int param, void *ptr) { m_t0 = !m_t0; m_cpu->set_input_line(MCS51_T0_LINE, m_t0); }