diff options
Diffstat (limited to 'src/devices/bus/archimedes/podule/midimax.cpp')
-rw-r--r-- | src/devices/bus/archimedes/podule/midimax.cpp | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/src/devices/bus/archimedes/podule/midimax.cpp b/src/devices/bus/archimedes/podule/midimax.cpp new file mode 100644 index 00000000000..c9215fee4d9 --- /dev/null +++ b/src/devices/bus/archimedes/podule/midimax.cpp @@ -0,0 +1,132 @@ +// license:BSD-3-Clause +// copyright-holders:Nigel Barnes +/********************************************************************** + + Wild Vision MidiMax + + http://chrisacorns.computinghistory.org.uk/32bit_UpgradesH2Z/WildVision_MidiMax.html + +**********************************************************************/ + +#include "emu.h" +#include "midimax.h" +#include "machine/ins8250.h" +#include "bus/midi/midi.h" + + +namespace { + +class arc_midimax_device : + public device_t, + public device_archimedes_podule_interface +{ +public: + // construction/destruction + arc_midimax_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock); + +protected: + // device-level overrides + virtual void device_start() override; + virtual void device_reset() override; + + // optional information overrides + virtual void device_add_mconfig(machine_config &config) override; + virtual const tiny_rom_entry *device_rom_region() const override; + + // device_archimedes_podule_interface overrides + virtual void ioc_map(address_map &map) override; + +private: + required_memory_region m_podule_rom; + + u8 m_rom_page; +}; + + +void arc_midimax_device::ioc_map(address_map &map) +{ + map(0x0000, 0x1fff).lr8(NAME([this](offs_t offset) { return m_podule_rom->base()[offset | ((m_rom_page << 11) & 0xf800)]; })).umask32(0x000000ff); + map(0x2000, 0x2000).lw8(NAME([this](u8 data) { m_rom_page = data; })); + map(0x3000, 0x301f).rw("uart", FUNC(ns16550_device::ins8250_r), FUNC(ns16550_device::ins8250_w)).umask32(0x000000ff); +} + + +//------------------------------------------------- +// ROM( midimax ) +//------------------------------------------------- + +ROM_START( midimax ) + ROM_REGION(0x10000, "podule_rom", 0) + ROM_LOAD("midimax.rom", 0x0000, 0x10000, CRC(62d8a431) SHA1(8c291082d9e8a8533a4f3b59da857813aa357ecb)) +ROM_END + +const tiny_rom_entry *arc_midimax_device::device_rom_region() const +{ + return ROM_NAME( midimax ); +} + + +//------------------------------------------------- +// device_add_mconfig - add device configuration +//------------------------------------------------- + +void arc_midimax_device::device_add_mconfig(machine_config &config) +{ + ns16550_device &uart(NS16550(config, "uart", DERIVED_CLOCK(1, 4))); // TODO: verify clock + uart.out_tx_callback().set("mdout1", FUNC(midi_port_device::write_txd)); + uart.out_tx_callback().append("mdout2", FUNC(midi_port_device::write_txd)); + uart.out_tx_callback().append("mdthru", FUNC(midi_port_device::write_txd)); + uart.out_int_callback().set([this](int state) { set_pirq(state); }); + + midiout_slot(MIDI_PORT(config, "mdthru")); + midiout_slot(MIDI_PORT(config, "mdout1")); + midiout_slot(MIDI_PORT(config, "mdout2")); + midi_port_device &mdin(MIDI_PORT(config, "mdin", midiin_slot, "midiin")); + mdin.rxd_handler().set("uart", FUNC(ns16550_device::rx_w)); + mdin.rxd_handler().append("mdthru", FUNC(midi_port_device::write_txd)); +} + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// arc_midimax_device - constructor +//------------------------------------------------- + +arc_midimax_device::arc_midimax_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) + : device_t(mconfig, ARC_MIDIMAX, tag, owner, clock) + , device_archimedes_podule_interface(mconfig, *this) + , m_podule_rom(*this, "podule_rom") + , m_rom_page(0) +{ +} + + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void arc_midimax_device::device_start() +{ + save_item(NAME(m_rom_page)); +} + +//------------------------------------------------- +// device_reset - device-specific reset +//------------------------------------------------- + +void arc_midimax_device::device_reset() +{ + m_rom_page = 0x00; +} + +} // anonymous namespace + + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +DEFINE_DEVICE_TYPE_PRIVATE(ARC_MIDIMAX, device_archimedes_podule_interface, arc_midimax_device, "arc_midimax", "Wild Vision MidiMax") |