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// license:BSD-3-Clause
// copyright-holders:Barry Rodewald
/*
* x68k_midi.cpp
*
* X68000 MIDI interface - YM3802
*
*/
#include "emu.h"
#include "bus/midi/midi.h"
#include "x68k_midi.h"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
DEFINE_DEVICE_TYPE(X68K_MIDI, x68k_midi_device, "x68k_midi", "X68000 MIDI Interface")
void x68k_midi_device::device_add_mconfig(machine_config &config)
{
YM3802(config, m_midi, XTAL(1'000'000)); // clock is unknown
m_midi->txd_handler().set("mdout", FUNC(midi_port_device::write_txd));
m_midi->irq_handler().set(FUNC(x68k_midi_device::irq_w));
MIDI_PORT(config, "mdin", midiin_slot, "midiin");
MIDI_PORT(config, "mdout", midiout_slot, "midiout");
// MIDI_PORT(config, "mdthru", midiout_slot, "midiout");
// TODO: Add serial data handlers
}
x68k_midi_device::x68k_midi_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock)
: device_t(mconfig, X68K_MIDI, tag, owner, clock)
, device_x68k_expansion_card_interface(mconfig, *this)
, m_slot(nullptr)
, m_midi(*this, "midi")
{
}
void x68k_midi_device::device_start()
{
m_slot = dynamic_cast<x68k_expansion_slot_device *>(owner());
m_slot->space().install_readwrite_handler(0xeafa00,0xeafa0f, read8sm_delegate(*this, FUNC(x68k_midi_device::x68k_midi_reg_r)), write8sm_delegate(*this, FUNC(x68k_midi_device::x68k_midi_reg_w)), 0x00ff00ff);
}
void x68k_midi_device::device_reset()
{
}
uint8_t x68k_midi_device::x68k_midi_reg_r(offs_t offset)
{
return m_midi->read(offset);
}
void x68k_midi_device::x68k_midi_reg_w(offs_t offset, uint8_t data)
{
m_midi->write(offset, data);
}
void x68k_midi_device::irq_w(int state)
{
m_slot->irq4_w(state); // selectable between IRQ2 and IRQ4
}
uint8_t x68k_midi_device::iack4()
{
return MIDI_IRQ_VECTOR | (m_midi->vector() & 0x1f);
}
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