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// license:BSD-3-Clause
// copyright-holders: Angelo Salese
/**************************************************************************************************
MIF-201 MIDI interface
Bundled with Micro Musician VA
References:
- https://mamedev.emulab.it/kale/fast/files/micromusician_va.jpg
TODO:
- evasive, needs manual, dip-switch sheet and PCB pictures;
**************************************************************************************************/
#include "emu.h"
#include "mif201.h"
DEFINE_DEVICE_TYPE(MIF201, mif201_device, "mif201", "Micro Musician VA MIF-201 MIDI Interface")
mif201_device::mif201_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, MIF201, tag, owner, clock)
, m_bus(*this, DEVICE_SELF_OWNER)
, m_uart(*this, "uart%u", 1U)
, m_pit(*this, "pit")
{
}
//void mif201_device::irq_out(int state)
//{
// m_bus->int_w<2>(state);
//}
void mif201_device::device_add_mconfig(machine_config &config)
{
// TODO: unknown clocks
I8251(config, m_uart[0], 1021800);
I8251(config, m_uart[1], 1021800);
PIT8253(config, m_pit, 1021800);
}
void mif201_device::device_start()
{
// sheet claims i8251-1 having swapped ports compared to i8251-2 but micromus just uses
// $e2d2 for control, assume typo.
m_bus->install_io(0xe2d0, 0xe2d3,
read8sm_delegate(*this, [this](offs_t offset) { return m_uart[0]->read(offset); }, "uart1_r"),
write8sm_delegate(*this, [this](offs_t offset, u8 data) { m_uart[0]->write(offset, data); }, "uart1_w")
);
m_bus->install_io(0xe4d0, 0xe4d3,
read8sm_delegate(*this, [this](offs_t offset) { return m_uart[1]->read(offset); }, "uart2_r"),
write8sm_delegate(*this, [this](offs_t offset, u8 data) { m_uart[1]->write(offset, data); }, "uart2_w")
);
m_bus->install_io(0xe6d0, 0xe6d3,
read8sm_delegate(*this, [this](offs_t offset) { return m_pit->read(offset); }, "pit_low_r"),
write8sm_delegate(*this, [this](offs_t offset, u8 data) { m_pit->write(offset, data); }, "pit_low_w")
);
m_bus->install_io(0xe7d0, 0xe7d3,
read8sm_delegate(*this, [this](offs_t offset) { return m_pit->read(offset | 2); }, "pit_high_r"),
write8sm_delegate(*this, [this](offs_t offset, u8 data) { m_pit->write(offset | 2, data); }, "pit_high_w")
);
}
void mif201_device::device_reset()
{
}
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