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-rw-r--r--src/devices/bus/cbus/mif201.cpp70
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diff --git a/src/devices/bus/cbus/mif201.cpp b/src/devices/bus/cbus/mif201.cpp
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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()
+{
+}