// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** Siel/JMS/DATEL MIDI Interface cartridge emulation Copyright MESS Team. Visit http://mamedev.org for licensing and usage restrictions. **********************************************************************/ #include "midi_siel.h" #include "machine/clock.h" #include "bus/midi/midi.h" //************************************************************************** // MACROS/CONSTANTS //************************************************************************** #define MC6850_TAG "mc6850" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** const device_type C64_MIDI_SIEL = &device_creator; WRITE_LINE_MEMBER( c64_siel_midi_cartridge_device::acia_irq_w ) { m_slot->irq_w(state); } WRITE_LINE_MEMBER( c64_siel_midi_cartridge_device::write_acia_clock ) { m_acia->write_txc(state); m_acia->write_rxc(state); } //------------------------------------------------- // MACHINE_CONFIG_FRAGMENT( c64_siel_midi ) //------------------------------------------------- static MACHINE_CONFIG_FRAGMENT( c64_siel_midi ) MCFG_DEVICE_ADD(MC6850_TAG, ACIA6850, 0) MCFG_ACIA6850_TXD_HANDLER(DEVWRITELINE("mdout", midi_port_device, write_txd)) MCFG_ACIA6850_IRQ_HANDLER(WRITELINE(c64_siel_midi_cartridge_device, acia_irq_w)) MCFG_MIDI_PORT_ADD("mdin", midiin_slot, "midiin") MCFG_MIDI_RX_HANDLER(DEVWRITELINE(MC6850_TAG, acia6850_device, write_rxd)) MCFG_MIDI_PORT_ADD("mdout", midiout_slot, "midiout") MCFG_DEVICE_ADD("acia_clock", CLOCK, 31250*16) MCFG_CLOCK_SIGNAL_HANDLER(WRITELINE(c64_siel_midi_cartridge_device, write_acia_clock)) MACHINE_CONFIG_END //------------------------------------------------- // machine_config_additions - device-specific // machine configurations //------------------------------------------------- machine_config_constructor c64_siel_midi_cartridge_device::device_mconfig_additions() const { return MACHINE_CONFIG_NAME( c64_siel_midi ); } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // c64_siel_midi_cartridge_device - constructor //------------------------------------------------- c64_siel_midi_cartridge_device::c64_siel_midi_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, C64_MIDI_SIEL, "C64 Siel MIDI", tag, owner, clock, "c64_midisiel", __FILE__), device_c64_expansion_card_interface(mconfig, *this), m_acia(*this, MC6850_TAG) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void c64_siel_midi_cartridge_device::device_start() { // state saving } //------------------------------------------------- // device_reset - device-specific reset //------------------------------------------------- void c64_siel_midi_cartridge_device::device_reset() { m_acia->reset(); } //------------------------------------------------- // c64_cd_r - cartridge data read //------------------------------------------------- UINT8 c64_siel_midi_cartridge_device::c64_cd_r(address_space &space, offs_t offset, UINT8 data, int sphi2, int ba, int roml, int romh, int io1, int io2) { if (!io1) { switch (offset & 0xff) { case 6: data = m_acia->status_r(space, 0); break; case 7: data = m_acia->data_r(space, 0); break; } } return data; } //------------------------------------------------- // c64_cd_w - cartridge data write //------------------------------------------------- void c64_siel_midi_cartridge_device::c64_cd_w(address_space &space, offs_t offset, UINT8 data, int sphi2, int ba, int roml, int romh, int io1, int io2) { if (!io1) { switch (offset & 0xff) { case 4: m_acia->control_w(space, 0, data); break; case 5: m_acia->data_w(space, 0, data); break; } } }