// license:BSD-3-Clause // copyright-holders:Carl // ATI Stereo F/X // // TODO: UART is connected to MIDI port #include "emu.h" #include "stereo_fx.h" #include "sound/dac.h" #include "speaker.h" DEFINE_DEVICE_TYPE(ISA8_STEREO_FX, stereo_fx_device, "stereo_fx", "ATi Stereo F/X Audio Adapter") uint8_t stereo_fx_device::dev_dsp_data_r() { if (!machine().side_effects_disabled()) m_data_in = false; return m_in_byte; } void stereo_fx_device::dev_dsp_data_w(uint8_t data) { m_data_out = true; m_out_byte = data; } // port 1 is the left DAC but is written and read bitwise during capture uint8_t stereo_fx_device::p1_r() { return 0x80; } uint8_t stereo_fx_device::p3_r() { uint8_t 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; } void stereo_fx_device::p3_w(uint8_t data) { m_t1 = (data & 0x20) >> 5; } void stereo_fx_device::dev_host_irq_w(uint8_t data) { m_isa->irq5_w(1); } void stereo_fx_device::raise_drq_w(uint8_t data) { m_isa->drq1_w(1); } /* port 0x20 - in ROM (usually) stored in RAM 0x22 * bit0 - * bit1 - * bit2 - * bit3 - * bit4 - * bit5 - * bit6 - * bit7 - */ void stereo_fx_device::port20_w(uint8_t data) { 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 - */ void stereo_fx_device::port00_w(uint8_t data) { 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 void stereo_fx_device::stereo_fx_io(address_map &map) { map(0xFF00, 0xFF00).w(FUNC(stereo_fx_device::port00_w)); map(0xFF10, 0xFF10).w("rdac", FUNC(dac_byte_interface::data_w)); map(0xFF20, 0xFF20).w(FUNC(stereo_fx_device::port20_w)); //map(0xFF30, 0xFF30).w(FUNC(stereo_fx_device::)); // used only on reset and undocumented cmd 0xc4 map(0xFF40, 0xFF40).rw(FUNC(stereo_fx_device::dev_dsp_data_r), FUNC(stereo_fx_device::dev_dsp_data_w)); map(0xFF50, 0xFF50).w(FUNC(stereo_fx_device::raise_drq_w)); map(0xFF60, 0xFF60).w(FUNC(stereo_fx_device::dev_host_irq_w)); } void stereo_fx_device::stereo_fx_rom(address_map &map) { map(0x0000, 0x7fff).rom(); } const tiny_rom_entry *stereo_fx_device::device_rom_region() const { return ROM_NAME( stereo_fx ); } void stereo_fx_device::device_add_mconfig(machine_config &config) { I80C31(config, m_cpu, XTAL(30'000'000)); m_cpu->set_addrmap(AS_PROGRAM, &stereo_fx_device::stereo_fx_rom); m_cpu->set_addrmap(AS_IO, &stereo_fx_device::stereo_fx_io); m_cpu->port_in_cb<1>().set(FUNC(stereo_fx_device::p1_r)); m_cpu->port_out_cb<1>().set("ldac", FUNC(dac_byte_interface::data_w)); m_cpu->port_in_cb<3>().set(FUNC(stereo_fx_device::p3_r)); m_cpu->port_out_cb<3>().set(FUNC(stereo_fx_device::p3_w)); SPEAKER(config, "lspeaker").front_left(); SPEAKER(config, "rspeaker").front_right(); ym3812_device &ym3812(YM3812(config, "ym3812", XTAL(3'579'545))); ym3812.add_route(ALL_OUTPUTS, "lspeaker", 1.00); ym3812.add_route(ALL_OUTPUTS, "rspeaker", 1.00); /* no CM/S support (empty sockets) */ DAC_8BIT_R2R(config, "ldac", 0).add_route(ALL_OUTPUTS, "lspeaker", 0.5); // unknown DAC DAC_8BIT_R2R(config, "rdac", 0).add_route(ALL_OUTPUTS, "rspeaker", 0.5); // unknown DAC PC_JOY(config, m_joy); } uint8_t stereo_fx_device::dsp_data_r() { if (!machine().side_effects_disabled()) m_data_out = false; return m_out_byte; } void stereo_fx_device::dsp_cmd_w(uint8_t data) { m_data_in = true; m_in_byte = data; } uint8_t 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_t data) { m_data_in = true; m_isa->drq1_w(0); m_in_byte = data; } void stereo_fx_device::dsp_reset_w(uint8_t data) { device_reset(); m_cpu->pulse_input_line(INPUT_LINE_RESET, attotime::zero); } uint8_t stereo_fx_device::dsp_wbuf_status_r() { return m_data_in << 7; } uint8_t stereo_fx_device::dsp_rbuf_status_r() { if (!machine().side_effects_disabled()) m_isa->irq5_w(0); return m_data_out << 7; } void stereo_fx_device::invalid_w(uint8_t data) { logerror("stereo fx: invalid port write\n"); } uint8_t stereo_fx_device::invalid_r() { if (!machine().side_effects_disabled()) 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_t clock) : device_t(mconfig, ISA8_STEREO_FX, tag, owner, clock), device_isa8_card_interface(mconfig, *this), m_joy(*this, "pc_joy"), m_cpu(*this, "stereo_fx_cpu"), m_data_in(false), m_in_byte(0), m_data_out(false), m_out_byte(0), m_port20(0), m_port00(0), m_timer(nullptr), m_t0(0) { m_t1 = 0; } void stereo_fx_device::device_start() { ym3812_device &ym3812 = *subdevice("ym3812"); set_isa_device(); m_isa->install_device(0x0200, 0x0207, read8smo_delegate(*subdevice("pc_joy"), FUNC(pc_joy_device::joy_port_r)), write8smo_delegate(*subdevice("pc_joy"), FUNC(pc_joy_device::joy_port_w))); m_isa->install_device(0x0226, 0x0227, read8smo_delegate(*this, FUNC(stereo_fx_device::invalid_r)), write8smo_delegate(*this, FUNC(stereo_fx_device::dsp_reset_w))); m_isa->install_device(0x022a, 0x022b, read8smo_delegate(*this, FUNC(stereo_fx_device::dsp_data_r)), write8smo_delegate(*this, FUNC(stereo_fx_device::invalid_w))); m_isa->install_device(0x022c, 0x022d, read8smo_delegate(*this, FUNC(stereo_fx_device::dsp_wbuf_status_r)), write8smo_delegate(*this, FUNC(stereo_fx_device::dsp_cmd_w))); m_isa->install_device(0x022e, 0x022f, read8smo_delegate(*this, FUNC(stereo_fx_device::dsp_rbuf_status_r)), write8smo_delegate(*this, FUNC(stereo_fx_device::invalid_w))); m_isa->install_device(0x0388, 0x0389, read8sm_delegate(ym3812, FUNC(ym3812_device::read)), write8sm_delegate(ym3812, FUNC(ym3812_device::write))); m_isa->install_device(0x0228, 0x0229, read8sm_delegate(ym3812, FUNC(ym3812_device::read)), write8sm_delegate(ym3812, FUNC(ym3812_device::write))); 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) { m_t0 = !m_t0; m_cpu->set_input_line(MCS51_T0_LINE, m_t0); }