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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)
, device_pc98_cbus_slot_interface(mconfig, *this)
, 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()
{
}
void mif201_device::device_reset()
{
}
void mif201_device::remap(int space_id, offs_t start, offs_t end)
{
if (space_id == AS_IO)
{
m_bus->install_device(0x0000, 0xffff, *this, &mif201_device::io_map);
}
}
void mif201_device::io_map(address_map &map)
{
// sheet claims i8251-1 having swapped ports compared to i8251-2 but micromus just uses
// $e2d2 for control, assume typo.
map(0xe2d0, 0xe2d3).lrw8(
NAME([this](offs_t offset) { return m_uart[0]->read(offset); }),
NAME([this](offs_t offset, u8 data) { m_uart[0]->write(offset, data); })
).umask16(0x00ff);
map(0xe4d0, 0xe4d3).lrw8(
NAME([this](offs_t offset) { return m_uart[1]->read(offset); }),
NAME([this](offs_t offset, u8 data) { m_uart[1]->write(offset, data); })
).umask16(0x00ff);
map(0xe6d0, 0xe6d3).lrw8(
NAME([this](offs_t offset) { return m_pit->read(offset); }),
NAME([this](offs_t offset, u8 data) { m_pit->write(offset, data); })
).umask16(0x00ff);
map(0xe7d0, 0xe7d3).lrw8(
NAME([this](offs_t offset) { return m_pit->read(offset | 2); }),
NAME([this](offs_t offset, u8 data) { m_pit->write(offset | 2, data); })
).umask16(0x00ff);
}
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