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https://github.com/holub/mame
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bus/isa: Added IBM PS/2 speech adapter card. (#11157)
This commit is contained in:
Luigi Thirty
GitHub
parent
eb2ebc157a
commit
90e394850a
@ -1686,6 +1686,8 @@ if (BUSES["ISA"]~=null) then
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MAME_DIR .. "src/devices/bus/isa/hpblp.cpp",
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MAME_DIR .. "src/devices/bus/isa/ibm_mfc.cpp",
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MAME_DIR .. "src/devices/bus/isa/ibm_mfc.h",
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MAME_DIR .. "src/devices/bus/isa/ibm_speech.cpp",
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MAME_DIR .. "src/devices/bus/isa/ibm_speech.h",
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MAME_DIR .. "src/devices/bus/isa/ide.cpp",
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MAME_DIR .. "src/devices/bus/isa/ide.h",
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MAME_DIR .. "src/devices/bus/isa/lbaenhancer.cpp",
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466
src/devices/bus/isa/ibm_speech.cpp
Normal file
466
src/devices/bus/isa/ibm_speech.cpp
Normal file
@ -0,0 +1,466 @@
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// license:BSD-3-Clause
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// copyright-holders:Katherine Rohl
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/*
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IBM PS/2 Speech Adapter
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The ROM listing calls this card the "TALKER II".
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The ISA version of the card uses a different timing mechanism
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than the PCjr version to account for a 4MHz operating speed
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rather than the 4.77 bus clock. The ISA version also uses
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IRQ7 rather than IRQ1.
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Lots of TTL, all off-the-shelf parts except the mask ROM.
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Y1 - 4MHz oscillator
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ZM5 - MC14529CP
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ZM8 - TMS5220CNL
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ZM9 - 8254 PIT
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ZM10 - 32Kx8 mask ROM
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ZM22 - 8255A PIC
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*/
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#include "emu.h"
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#include "ibm_speech.h"
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#define LOG_ROM (1U << 1)
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#define LOG_MUX (1U << 2)
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#define LOG_CVSD (1U << 3)
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#define LOG_PIT (1U << 4)
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#define LOG_IRQ (1U << 5)
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#define LOG_PORTS (1U << 6)
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#define LOG_ALL (LOG_ROM|LOG_MUX|LOG_CVSD|LOG_PIT|LOG_IRQ|LOG_PORTS)
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//#define VERBOSE (LOG_PORTS)
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#include "logmacro.h"
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#ifdef _MSC_VER
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#define FUNCNAME __func__
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#else
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#define FUNCNAME __PRETTY_FUNCTION__
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#endif
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DEFINE_DEVICE_TYPE(ISA8_IBM_SPEECH, isa8_ibm_speech_device, "isa_ibm_speech", "IBM PS/2 Speech Adapter")
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//-------------------------------------------------
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// constructor
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//-------------------------------------------------
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isa8_ibm_speech_device::isa8_ibm_speech_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
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device_t(mconfig, ISA8_IBM_SPEECH, tag, owner, clock),
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device_isa8_card_interface(mconfig, *this),
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m_lpc(*this, "lpc"),
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m_cvsd(*this, "cvsd"),
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m_dac1bit(*this, "8254_audio"),
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m_pit(*this, "timers"),
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m_ppi(*this, "ppi"),
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m_speaker(*this, "speaker"),
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m_rom(*this, "option")
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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 isa8_ibm_speech_device::device_start()
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{
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set_isa_device();
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// Not configurable.
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m_isa->install_device(0xfb98, 0xfb9b,
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emu::rw_delegate(m_ppi, FUNC(i8255_device::read)),
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emu::rw_delegate(m_ppi, FUNC(i8255_device::write)));
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m_isa->install_device(0xfb9c, 0xfb9f,
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emu::rw_delegate(m_pit, FUNC(pit8254_device::read)),
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emu::rw_delegate(m_pit, FUNC(pit8254_device::write)));
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m_isa->install_device(0xff98, 0xff98,
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emu::rw_delegate(*this, FUNC(isa8_ibm_speech_device::shift_register_r)),
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emu::rw_delegate(*this, FUNC(isa8_ibm_speech_device::shift_register_w)));
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m_isa->install_device(0xff9f, 0xff9f,
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emu::rw_delegate(*this, FUNC(isa8_ibm_speech_device::audio_control_latch_r)),
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emu::rw_delegate(*this, FUNC(isa8_ibm_speech_device::audio_control_latch_w)));
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m_channel_mux = 0;
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m_acl_int_ena = false;
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m_acl_chan_ena = false;
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m_sr_clk = false;
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m_cvsd_ed = false;
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m_beeper_gate = false;
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}
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//-------------------------------------------------
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// device_reset - device-specific reset
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//-------------------------------------------------
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void isa8_ibm_speech_device::device_reset()
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{
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// Not configurable.
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rom_page_w(0);
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m_cvsd_sr_bits_remaining = 0;
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}
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//-------------------------------------------------
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// rom_region - device-specific ROM region
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//-------------------------------------------------
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ROM_START( ibm_speech )
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ROM_REGION( 0x8000, "option", 0 )
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ROM_LOAD( "68x2838.zm10", 0x0000, 0x8000, CRC(98ddf27f) SHA1(0cb41d490db2ed59989d2eae14a002ad0382e7ad) )
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ROM_END
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const tiny_rom_entry *isa8_ibm_speech_device::device_rom_region() const
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{
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return ROM_NAME( ibm_speech );
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}
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//-------------------------------------------------
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// device_add_mconfig - add device configuration
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//-------------------------------------------------
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void isa8_ibm_speech_device::device_add_mconfig(machine_config &config)
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{
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constexpr XTAL XTAL_Y1 = XTAL(4'000'000);
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// breakout box
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SPEAKER(config, m_speaker);
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PIT8254(config, m_pit, 0);
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// Channel 0: CVSD CLOCK.
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// Rising edge goes to the MC3418's clock pin.
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// Rising edge inverted goes to the shift register clock.
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m_pit->set_clk<0>(XTAL_Y1); // CVSD clock is the 4MHz crystal.
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m_pit->out_handler<0>().set(FUNC(isa8_ibm_speech_device::cvsd_clock_w));
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// Channel 1: CVSD FRAME.
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// PCjr: CVSD_CLOCK / 8, but seems to be just CVSD_CLOCK here.
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m_pit->set_clk<1>(XTAL_Y1);
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m_pit->out_handler<1>().set(FUNC(isa8_ibm_speech_device::cvsd_frame_w));
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// Channel 2: INT CLOCK.
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// Channel 2 can be configured either for interrupt mode or audio mode via the Audio Control Latch.
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// In interrupt mode, IRQ1 is signalled by the 5220.
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// The gate opens when the 5220 IRQ is signalled.
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// In audio mode, the timer output is multiplexed into audio output.
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// The gate is held open.
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m_pit->set_clk<2>(XTAL_Y1);
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m_pit->out_handler<2>().set(FUNC(isa8_ibm_speech_device::int_clock_w));
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// TMS5220 LPC
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// The 5220 has no direct-access speech ROM.
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// All data is transferred from the host PC via the 8255.
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// The preset vocabulary is in the option ROM.
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TMS5220(config, m_lpc, 640000); // TODO: Confirm TMS clock
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m_lpc->add_route(ALL_OUTPUTS, m_speaker, 1.0);
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m_lpc->irq_cb().set(FUNC(isa8_ibm_speech_device::lpc_interrupt_w));
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// MC3418 CVSD
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MC3418(config, m_cvsd, 0);
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m_cvsd->add_route(ALL_OUTPUTS, m_speaker, 1.0);
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// PIT CH2
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SPEAKER_SOUND(config, m_dac1bit);
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m_dac1bit->add_route(ALL_OUTPUTS, m_speaker, 1.0);
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I8255(config, m_ppi);
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m_ppi->in_pa_callback().set(FUNC(isa8_ibm_speech_device::porta_r));
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m_ppi->in_pb_callback().set(m_lpc, FUNC(tms5220_device::status_r)); // direct hookup
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m_ppi->in_pc_callback().set(FUNC(isa8_ibm_speech_device::portc_r));
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m_ppi->out_pa_callback().set(FUNC(isa8_ibm_speech_device::porta_w));
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m_ppi->out_pb_callback().set(m_lpc, FUNC(tms5220_device::data_w)); // direct hookup
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m_ppi->out_pc_callback().set(FUNC(isa8_ibm_speech_device::portc_w));
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}
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void isa8_ibm_speech_device::device_reset_after_children()
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{
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m_pit->write_gate0(ASSERT_LINE); // pulled high
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m_pit->write_gate1(ASSERT_LINE); // pulled high
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}
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/******************************************************************************
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ROM bankswitching
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The option ROM is 32Kx8 and divided into four 8K pages at CE00: to CFFF:.
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Bits 2-3 of PPI PORT.A control which page is visible.
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All pages contain the option ROM boot signature.
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******************************************************************************/
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void isa8_ibm_speech_device::rom_page_w(uint8_t data)
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{
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m_isa->install_bank(0xce000, 0xcffff, m_rom + (0x2000*data));
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}
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/******************************************************************************
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Audio Control Latch
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This is for multiplexing interrupt and audio sources.
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******************************************************************************/
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uint8_t isa8_ibm_speech_device::audio_control_latch_r()
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{
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uint8_t data = 0;
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// The bits are inverted when reading.
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data |= (m_acl_int_ena ? 0 : 2); // -INT_ENA
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data |= (m_acl_chan_ena ? 0 : 1); // -CHAN_ENA
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return data;
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}
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void isa8_ibm_speech_device::audio_control_latch_w(uint8_t data)
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{
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m_acl_int_ena = BIT(data, 1); // INT_ENA
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m_acl_chan_ena = BIT(data, 0); // CHAN_ENA
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if(m_acl_int_ena)
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{
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// IRQ7 enabled, close PIT CH2 gate.
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// CH2 will be set up for one-shot mode.
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m_pit->write_gate2(CLEAR_LINE);
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}
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else
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{
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// IRQ7 disabled, PIT CH2 is in audio output mode. Gate is held open.
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m_pit->write_gate2(ASSERT_LINE);
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}
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}
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/******************************************************************************
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PPI Port A
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PA.0: CHANNEL MUX (O)
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PA.1: CHANNEL MUX (O)
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PA.2: ROM PAGE (O)
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PA.3: ROM PAGE (O)
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PA.4: n/c
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PA.5: n/c
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PA.6: n/c
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PA.7: LPC IN PROGRESS (I/O)
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******************************************************************************/
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uint8_t isa8_ibm_speech_device::porta_r()
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{
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uint8_t data = 0;
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data |= (m_lpc_running << 7);
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return data;
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}
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void isa8_ibm_speech_device::porta_w(uint8_t data)
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{
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channel_mux_w(data & 3);
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rom_page_w((data >> 2) & 3);
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m_lpc_running = BIT(data, 7);
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}
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/******************************************************************************
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PPI Port C
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PC.0: -LPC READY (I)
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PC.1: -LPC INT (I)
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PC.2: CVSD FRAME (I)
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PC.3: -CVSD CLOCK (I)
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PC.4: LPC RS (O) (5220 RS#, inverted)
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PC.5: LPC WS (O) (5220 WS#, inverted)
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PC.6: CVSD E/D (I) (PC.6 | PIT.OUT1 triggers ZM12 SLOAD#)
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PC.7: n/c
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******************************************************************************/
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uint8_t isa8_ibm_speech_device::portc_r()
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{
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uint8_t data = 0;
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data |= (m_lpc->readyq_r() << 0);
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data |= (m_lpc->intq_r() << 1);
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data |= (m_cvsd_frame << 2);
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// PCjr
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//data |= (!m_cvsd_clock ? (1 << 3) : 0);
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if(m_cvsd_sr_bits_remaining > 0)
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{
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// ISA: Clock is held until the shift register needs a new frame.
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}
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else
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{
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data |= (!m_cvsd_clock << 3);
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}
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data |= (m_cvsd_ed << 6); // 0: CVSD playback, 1: CVSD record
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return data;
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}
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void isa8_ibm_speech_device::portc_w(uint8_t data)
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{
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m_lpc->rsq_w(!BIT(data, 4));
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m_lpc->wsq_w(!BIT(data, 5));
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}
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/******************************************************************************
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Channel Mux
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Selects the audio source from the four possible sources. Only one source
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can be used at a time.
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******************************************************************************/
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void isa8_ibm_speech_device::channel_mux_w(uint8_t data)
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{
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switch(data & 3)
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{
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case 0:
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LOGMASKED(LOG_MUX, "Channel MUX: source now LPC\n");
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m_lpc->set_output_gain(0, 1.0);
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m_cvsd->set_output_gain(0, 0.0);
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m_beeper_gate = 0;
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break;
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case 1:
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LOGMASKED(LOG_MUX, "Channel MUX: source now CVSD\n");
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m_lpc->set_output_gain(0, 0.0);
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m_cvsd->set_output_gain(0, 1.0);
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m_beeper_gate = 0;
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break;
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case 2:
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LOGMASKED(LOG_MUX, "Channel MUX: source now 8254\n");
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m_lpc->set_output_gain(0, 0.0);
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m_cvsd->set_output_gain(0, 0.0);
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m_beeper_gate = 1;
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break;
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case 3:
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LOGMASKED(LOG_MUX, "Channel MUX: source now Test Signal\n");
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// TODO: How is this generated?
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break;
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}
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}
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WRITE_LINE_MEMBER(isa8_ibm_speech_device::lpc_interrupt_w)
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{
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// Active low.
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// Pulse IRQ7 on falling edge.
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if(m_lpc_interrupt && !state)
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{
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LOGMASKED(LOG_IRQ, "pulsing IRQ7\n");
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m_isa->irq7_w(ASSERT_LINE); // Raise IRQ...
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m_pit->write_gate2(ASSERT_LINE); // ...CH2 gate open, triggering CH2 one-shot.
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}
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else if(!m_lpc_interrupt && !state)
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{
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LOGMASKED(LOG_IRQ, "IRQ7 already raised, go away\n");
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}
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else if(state)
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{
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LOGMASKED(LOG_IRQ, "LPC INT pin going high, CH2 gate closed\n");
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m_isa->irq7_w(CLEAR_LINE);
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m_pit->write_gate2(CLEAR_LINE);
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}
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m_lpc_interrupt = state;
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}
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/******************************************************************************
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CVSD Clock - PIT CH0
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Sets the speed of the CVSD bitstream.
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Non-inverted to:
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- MC3418 CLK
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Inverted to:
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- PIT CLK1
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- ZM12 serial clock
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- PPI PORTC.3
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******************************************************************************/
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WRITE_LINE_MEMBER(isa8_ibm_speech_device::cvsd_clock_w)
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{
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m_cvsd_clock = state;
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LOGMASKED(LOG_CVSD, "cvsd_clock_w %d\n", state);
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// PIT CH0 is the CVSD CLOCK signal.
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m_cvsd->clock_w(state); // Straight through to the CVSD CLK pin.
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// Through an inverter and to:
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//m_pit->write_clk1(state ? 0 : 1); // PCjr: PIT CLK1
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cvsd_shiftreg_clk_w(state ? 0 : 1); // 74859 clock pin
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// PPI PC.3 (handled over there)
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}
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/******************************************************************************
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CVSD Frame - PIT CH1
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Defined as (CVSD Clock / 8).
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This signal goes low for one clock every 8 CVSD bit clocks, which specifies
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how often a new byte gets latched into the CVSD shift register.
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******************************************************************************/
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WRITE_LINE_MEMBER(isa8_ibm_speech_device::cvsd_frame_w)
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{
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// PIT CH1 is the CVSD FRAME signal.
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LOGMASKED(LOG_CVSD, "*** CVSD frame going %s\n", (state ? "high" : "low"));
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if(state && (m_cvsd_sr_bits_remaining == 0))
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{
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m_cvsd_sr_serial = m_cvsd_sr_parallel;
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}
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m_cvsd_frame = state;
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}
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/******************************************************************************
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INT CLOCK - PIT CH2
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Clocked by the 4MHz crystal.
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When INT_ENA is asserted, pulses IRQ7 when the 5220 raises an IRQ.
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When INT_ENA is cleared, the timer acts as a PC speaker-style beeper.
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******************************************************************************/
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WRITE_LINE_MEMBER(isa8_ibm_speech_device::int_clock_w)
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{
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if(!m_acl_int_ena)
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{
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// CH2 is now a beeper.
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//LOGMASKED(LOG_IRQ, "%s: INT CLOCK: beeper mode\n", FUNCNAME);
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m_dac1bit->level_w(state);
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}
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}
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/******************************************************************************
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CVSD Shift Register
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******************************************************************************/
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WRITE_LINE_MEMBER(isa8_ibm_speech_device::cvsd_shiftreg_clk_w)
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{
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// If rising edge of the inverted signal...
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if(!m_sr_clk && state)
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{
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// Shift one bit out of the shift register and into the CVSD.
|
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if(m_cvsd_sr_bits_remaining > 0)
|
||||
{
|
||||
LOGMASKED(LOG_CVSD, "bit going SR -> CVSD, %d left\n", m_cvsd_sr_bits_remaining);
|
||||
m_cvsd->digin_w(BIT(m_cvsd_sr_serial, 0));
|
||||
m_cvsd_sr_serial >>= 1;
|
||||
|
||||
m_cvsd_sr_bits_remaining--;
|
||||
}
|
||||
}
|
||||
|
||||
m_sr_clk = state;
|
||||
}
|
||||
|
||||
/******************************************************************************
|
||||
CVSD Shift Register read and write logic.
|
||||
******************************************************************************/
|
||||
|
||||
// The host sees the parallel side, the CVSD sees the serial side.
|
||||
uint8_t isa8_ibm_speech_device::shift_register_r()
|
||||
{
|
||||
return m_cvsd_sr_parallel;
|
||||
}
|
||||
|
||||
void isa8_ibm_speech_device::shift_register_w(uint8_t data)
|
||||
{
|
||||
if(m_cvsd_sr_bits_remaining == 0)
|
||||
{
|
||||
LOGMASKED(LOG_CVSD, "incoming to CVSD shift register %02X\n", data);
|
||||
m_cvsd_sr_parallel = data;
|
||||
m_cvsd_sr_bits_remaining = 8;
|
||||
cvsd_frame_w(1);
|
||||
}
|
||||
else
|
||||
{
|
||||
LOGMASKED(LOG_CVSD, "incoming to CVSD shift register %02X but not out of bits\n", data);
|
||||
}
|
||||
}
|
||||
83
src/devices/bus/isa/ibm_speech.h
Normal file
83
src/devices/bus/isa/ibm_speech.h
Normal file
@ -0,0 +1,83 @@
|
||||
// license:BSD-3-Clause
|
||||
// copyright-holders:Katherine Rohl
|
||||
|
||||
#ifndef MAME_BUS_ISA_IBM_SPEECH_H
|
||||
#define MAME_BUS_ISA_IBM_SPEECH_H
|
||||
|
||||
#pragma once
|
||||
|
||||
#include "isa.h"
|
||||
#include "machine/i8255.h"
|
||||
#include "machine/pit8253.h"
|
||||
#include "sound/tms5220.h"
|
||||
#include "sound/hc55516.h"
|
||||
#include "sound/spkrdev.h"
|
||||
#include "speaker.h"
|
||||
|
||||
class isa8_ibm_speech_device :
|
||||
public device_t,
|
||||
public device_isa8_card_interface
|
||||
{
|
||||
public:
|
||||
isa8_ibm_speech_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
|
||||
|
||||
uint8_t audio_control_latch_r();
|
||||
void audio_control_latch_w(uint8_t data);
|
||||
|
||||
uint8_t shift_register_r();
|
||||
void shift_register_w(uint8_t data);
|
||||
|
||||
protected:
|
||||
// device_t implementation
|
||||
virtual void device_start() override;
|
||||
virtual void device_reset() override;
|
||||
virtual void device_reset_after_children() override;
|
||||
virtual void device_add_mconfig(machine_config &config) override;
|
||||
virtual const tiny_rom_entry *device_rom_region() const override;
|
||||
|
||||
private:
|
||||
required_device<tms5220_device> m_lpc;
|
||||
required_device<mc3418_device> m_cvsd;
|
||||
required_device<speaker_sound_device> m_dac1bit;
|
||||
required_device<pit8254_device> m_pit;
|
||||
required_device<i8255_device> m_ppi;
|
||||
required_device<speaker_device> m_speaker;
|
||||
required_region_ptr<uint8_t> m_rom;
|
||||
|
||||
DECLARE_WRITE_LINE_MEMBER(cvsd_clock_w); // PIT CH0
|
||||
DECLARE_WRITE_LINE_MEMBER(cvsd_frame_w); // PIT CH1
|
||||
DECLARE_WRITE_LINE_MEMBER(int_clock_w); // PIT CH2
|
||||
DECLARE_WRITE_LINE_MEMBER(lpc_interrupt_w); // 5220 INT#
|
||||
DECLARE_WRITE_LINE_MEMBER(cvsd_shiftreg_clk_w); // SRCLK
|
||||
|
||||
uint8_t porta_r();
|
||||
uint8_t portc_r();
|
||||
|
||||
void porta_w(uint8_t data);
|
||||
void portc_w(uint8_t data);
|
||||
|
||||
void rom_page_w(uint8_t data);
|
||||
void channel_mux_w(uint8_t data);
|
||||
|
||||
bool m_lpc_interrupt;
|
||||
bool m_lpc_running;
|
||||
|
||||
bool m_cvsd_clock;
|
||||
bool m_cvsd_frame;
|
||||
bool m_cvsd_ed;
|
||||
|
||||
bool m_sr_clk;
|
||||
bool m_beeper_gate;
|
||||
|
||||
bool m_acl_int_ena;
|
||||
bool m_acl_chan_ena;
|
||||
|
||||
uint8_t m_channel_mux;
|
||||
uint8_t m_cvsd_sr_bits_remaining;
|
||||
uint8_t m_cvsd_sr_parallel;
|
||||
uint8_t m_cvsd_sr_serial;
|
||||
};
|
||||
|
||||
DECLARE_DEVICE_TYPE(ISA8_IBM_SPEECH, isa8_ibm_speech_device)
|
||||
|
||||
#endif // MAME_BUS_ISA_IBM_SPEECH_H
|
||||
@ -57,6 +57,7 @@
|
||||
#include "gblaster.h"
|
||||
#include "gus.h"
|
||||
#include "ibm_mfc.h"
|
||||
#include "ibm_speech.h"
|
||||
#include "mpu401.h"
|
||||
#include "pcmidi.h"
|
||||
#include "sblaster.h"
|
||||
@ -191,6 +192,7 @@ void pc_isa16_cards(device_slot_interface &device)
|
||||
device.option_add("acb2072", ACB2072);
|
||||
device.option_add("3xtwin", ISA8_3XTWIN);
|
||||
device.option_add("opus108pm", ISA8_OPUS108PM);
|
||||
device.option_add("ibm_speech", ISA8_IBM_SPEECH);
|
||||
// 16-bit
|
||||
device.option_add("ide", ISA16_IDE);
|
||||
device.option_add("ne2000", NE2000);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user