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https://github.com/holub/mame
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isa: Add Music Quest PC MIDI Card [AJR, VOGONS Vintage Driver Library]
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AJR
parent
ac016e6d10
commit
31be3bc264
@ -1257,6 +1257,8 @@ if (BUSES["ISA"]~=null) then
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MAME_DIR .. "src/devices/bus/isa/cl_sh260.h",
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MAME_DIR .. "src/devices/bus/isa/mpu401.cpp",
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MAME_DIR .. "src/devices/bus/isa/mpu401.h",
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MAME_DIR .. "src/devices/bus/isa/pcmidi.cpp",
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MAME_DIR .. "src/devices/bus/isa/pcmidi.h",
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MAME_DIR .. "src/devices/bus/isa/sblaster.cpp",
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MAME_DIR .. "src/devices/bus/isa/sblaster.h",
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MAME_DIR .. "src/devices/bus/isa/stereo_fx.cpp",
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@ -53,6 +53,7 @@
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#include "gus.h"
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#include "ibm_mfc.h"
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#include "mpu401.h"
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#include "pcmidi.h"
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#include "sblaster.h"
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#include "ssi2001.h"
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#include "stereo_fx.h"
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@ -114,6 +115,7 @@ void pc_isa8_cards(device_slot_interface &device)
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device.option_add("stereo_fx", ISA8_STEREO_FX);
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device.option_add("ssi2001", ISA8_SSI2001);
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device.option_add("mpu401", ISA8_MPU401);
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device.option_add("pcmidi", ISA8_PCMIDI);
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device.option_add("ne1000", NE1000);
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device.option_add("3c503", EL2_3C503);
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device.option_add("lpt", ISA8_LPT);
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@ -158,6 +160,7 @@ void pc_isa16_cards(device_slot_interface &device)
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device.option_add("ne1000", NE1000);
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device.option_add("3c503", EL2_3C503);
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device.option_add("mpu401", ISA8_MPU401);
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device.option_add("pcmidi", ISA8_PCMIDI);
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device.option_add("lpt", ISA8_LPT);
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device.option_add("ibm_mfc", ISA8_IBM_MFC);
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device.option_add("fdcsmc", ISA8_FDC_SMC);
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262
src/devices/bus/isa/pcmidi.cpp
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262
src/devices/bus/isa/pcmidi.cpp
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@ -0,0 +1,262 @@
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// license:BSD-3-Clause
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// copyright-holders:AJR
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/***************************************************************************
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PC MIDI Card
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Copyright (C) 1989 Music Quest, Inc.
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FCC ID: IH9MQ9
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This is one of several Z8681-based MIDI cards by Music Quest. Its
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interface is more or less compatible with the Roland MPU401.
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****************************************************************************
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Music Quest PC MIDI CARD IH9MQ9 component list:
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C1 : 2.2uf 50v electrolytic capacitor
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C2 : 100nf tantalum capacitor
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C3 : 100nf tantalum capacitor
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C4 : 100nf tantalum capacitor
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C5 : 100nf tantalum capacitor
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C6 : 100nf tantalum capacitor
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C7 : 100nf tantalum capacitor
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C9 : 100nf tantalum capacitor
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D1 : diode (IN4148 ?)
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Y1 : 12,000 MHz crystal 2 pin
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R1 : 15K ohm resistor +-5%
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R2 : 390 ohm resistor +-5%
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RP1 : 10K ohm Commoned (?) resistor network 2% SIP package (code used A103GA)
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RP2 : 220 ohm Commoned (?) resistor network 2% SIP package (code used B221GA)
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U1 : 74LS374N
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U2 : Zilog Z8 ROMLESS MCU Z0868112PSC
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U3 : 74LS139N
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U4 : 74LS74AN
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U5 : PAL-16L8-25N - read protected , unknown code
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U6 : OTP firmware rom chip compatible with 27C512 eproms/eeproms , 64kbyte
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U7 : HYUNDAI HY611ALP-10 or compatible 2K x8bits CMOS SRAM IC
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U8 : 74LS125AN
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U9 : 74LS374N
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U10 : 74LS374N
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U11 : SHARP PC900V or compatible photocoupler
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***************************************************************************/
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#include "emu.h"
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#include "pcmidi.h"
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//**************************************************************************
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// GLOBAL VARIABLES
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//**************************************************************************
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DEFINE_DEVICE_TYPE(ISA8_PCMIDI, isa8_pcmidi_device, "isa_pcmidi", "Music Quest PC MIDI Card (IHQMQ9)")
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//**************************************************************************
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// DEVICE SETUP
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//**************************************************************************
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//-------------------------------------------------
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// isa8_pcmidi_device - constructor
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//-------------------------------------------------
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isa8_pcmidi_device::isa8_pcmidi_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
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: device_t(mconfig, ISA8_PCMIDI, tag, owner, clock)
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, device_isa8_card_interface(mconfig, *this)
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, m_mpu(*this, "mpu")
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, m_cmdlatch(*this, "cmdlatch")
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, m_statlatch(*this, "statlatch")
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, m_midiout(*this, "midiout")
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, m_config(*this, "CONFIG")
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, m_mpu_p3(0)
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, m_host_irq(false)
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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 isa8_pcmidi_device::device_start()
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{
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set_isa_device();
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save_item(NAME(m_mpu_p3));
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save_item(NAME(m_host_irq));
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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_pcmidi_device::device_reset()
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{
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offs_t ioaddr = BIT(m_config->read(), 0) ? 0x300 : 0x330;
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m_isa->install_device(ioaddr, ioaddr + 1,
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read8sm_delegate(FUNC(isa8_pcmidi_device::host_r), this),
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write8sm_delegate(FUNC(isa8_pcmidi_device::host_w), this));
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set_host_irq(false);
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}
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//**************************************************************************
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// LATCHES AND IRQS
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//**************************************************************************
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//-------------------------------------------------
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// set_host_irq - update the host IRQ level
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//-------------------------------------------------
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void isa8_pcmidi_device::set_host_irq(bool state)
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{
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if (m_host_irq != state)
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{
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m_host_irq = state;
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ioport_value config = m_config->read();
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if (!BIT(config, 1))
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m_isa->irq3_w(state);
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if (!BIT(config, 2))
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m_isa->irq5_w(state);
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if (!BIT(config, 3))
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m_isa->irq7_w(state);
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if (!BIT(config, 4))
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m_isa->irq2_w(state);
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}
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}
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//-------------------------------------------------
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// host_r - read from data or status port
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//-------------------------------------------------
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u8 isa8_pcmidi_device::host_r(offs_t offset)
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{
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if (!machine().side_effects_disabled())
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{
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set_host_irq(false);
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m_mpu->set_input_line(INPUT_LINE_IRQ1, ASSERT_LINE);
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}
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return m_statlatch->read();
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}
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//-------------------------------------------------
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// host_w - write to data or command port
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//-------------------------------------------------
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void isa8_pcmidi_device::host_w(offs_t offset, u8 data)
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{
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m_cmdlatch->write(data);
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// IRQs are latched and acknowledged internally
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m_mpu->pulse_input_line(offset ? INPUT_LINE_IRQ0 : INPUT_LINE_IRQ2, attotime::zero);
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}
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//-------------------------------------------------
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// status_w - mailbox write from local processor
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//-------------------------------------------------
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void isa8_pcmidi_device::status_w(u8 data)
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{
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m_statlatch->write(data);
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if (!BIT(m_mpu_p3, 5))
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{
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set_host_irq(true);
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m_mpu->set_input_line(INPUT_LINE_IRQ1, CLEAR_LINE);
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}
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}
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//-------------------------------------------------
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// mpu_p3_w - write to output port
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//-------------------------------------------------
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void isa8_pcmidi_device::mpu_p3_w(u8 data)
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{
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m_midiout->write_txd(BIT(data, 4));
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// P36 = error LED output?
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if (BIT(m_mpu_p3, 5) && !BIT(data, 5))
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set_host_irq(false);
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m_mpu_p3 = data;
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}
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//-------------------------------------------------
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// mpu_map - Z8681 address map
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//-------------------------------------------------
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void isa8_pcmidi_device::mpu_map(address_map &map)
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{
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map(0x0000, 0x1fff).rom().region("microcode", 0);
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map(0x6000, 0x7fff).rom().mirror(0x8000).region("microcode", 0);
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map(0xa000, 0xa7ff).ram();
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map(0xc000, 0xc000).mirror(0xff).r(m_cmdlatch, FUNC(generic_latch_8_device::read)).w(FUNC(isa8_pcmidi_device::status_w));
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}
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//**************************************************************************
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// DEVICE CONFIGURATION
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//**************************************************************************
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static INPUT_PORTS_START(isa_pcmidi)
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PORT_START("CONFIG") // dual inline block of jumpers with idiosyncratic numbering
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PORT_DIPNAME(0x01, 0x00, "I/O Address (P)") PORT_DIPLOCATION("J1:1")
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PORT_DIPSETTING(0x01, "300")
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PORT_DIPSETTING(0x00, "330")
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PORT_DIPNAME(0x1e, 0x0e, "Interrupt") PORT_DIPLOCATION("J1:2,3,4,5")
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PORT_DIPSETTING(0x0e, "IRQ2")
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PORT_DIPSETTING(0x1c, "IRQ3")
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PORT_DIPSETTING(0x1a, "IRQ5")
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PORT_DIPSETTING(0x16, "IRQ7")
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INPUT_PORTS_END
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ioport_constructor isa8_pcmidi_device::device_input_ports() const
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{
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return INPUT_PORTS_NAME(isa_pcmidi);
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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_pcmidi_device::device_add_mconfig(machine_config &config)
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{
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Z8681(config, m_mpu, 12_MHz_XTAL);
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m_mpu->set_addrmap(AS_PROGRAM, &isa8_pcmidi_device::mpu_map);
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m_mpu->p3_out_cb().set(FUNC(isa8_pcmidi_device::mpu_p3_w));
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GENERIC_LATCH_8(config, m_cmdlatch);
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GENERIC_LATCH_8(config, m_statlatch);
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MIDI_PORT(config, m_midiout, midiout_slot, "midiout");
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MIDI_PORT(config, "midiin", midiin_slot, "midiin").rxd_handler().set_inputline(m_mpu, INPUT_LINE_IRQ3).invert();
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}
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//**************************************************************************
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// ROM DEFINITION
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//**************************************************************************
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ROM_START(isa_pcmidi)
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ROM_REGION(0x10000, "microcode", 0)
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ROM_LOAD("ih9mq9_firmware_v010.bin", 0x00000, 0x10000, CRC(d4cab098) SHA1(9446c4939de557f839a74ca6fe7f41df46752e25))
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ROM_END
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const tiny_rom_entry *isa8_pcmidi_device::device_rom_region() const
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{
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return ROM_NAME(isa_pcmidi);
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}
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47
src/devices/bus/isa/pcmidi.h
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47
src/devices/bus/isa/pcmidi.h
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@ -0,0 +1,47 @@
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// license:BSD-3-Clause
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// copyright-holders:AJR
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#ifndef MAME_BUS_ISA_PCMIDI_H
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#define MAME_BUS_ISA_PCMIDI_H
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#pragma once
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#include "isa.h"
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#include "bus/midi/midi.h"
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#include "cpu/z8/z8.h"
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#include "machine/gen_latch.h"
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class isa8_pcmidi_device : public device_t, public device_isa8_card_interface
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{
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public:
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isa8_pcmidi_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
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protected:
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virtual void device_start() override;
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virtual void device_reset() override;
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virtual ioport_constructor device_input_ports() const override;
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virtual void device_add_mconfig(machine_config &config) override;
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virtual const tiny_rom_entry *device_rom_region() const override;
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private:
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void set_host_irq(bool state);
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u8 host_r(offs_t offset);
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void host_w(offs_t offset, u8 data);
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void status_w(u8 data);
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void mpu_p3_w(u8 data);
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void mpu_map(address_map &map);
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required_device<z8_device> m_mpu;
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required_device<generic_latch_8_device> m_cmdlatch;
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required_device<generic_latch_8_device> m_statlatch;
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required_device<midi_port_device> m_midiout;
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required_ioport m_config;
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u8 m_mpu_p3;
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bool m_host_irq;
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};
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DECLARE_DEVICE_TYPE(ISA8_PCMIDI, isa8_pcmidi_device)
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#endif // MAME_BUS_ISA_PCMIDI_H
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