// license:BSD-3-Clause // copyright-holders:Nigel Barnes /********************************************************************** Mikro-Plus - Shadow of the Unicorn **********************************************************************/ #include "emu.h" #include "mikroplus.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** DEFINE_DEVICE_TYPE(SPECTRUM_MIKROPLUS, spectrum_mikroplus_device, "spectrum_mikroplus", "Mikro-Plus - Shadow of the Unicorn") //------------------------------------------------- // ROM( mikroplus ) //------------------------------------------------- ROM_START( mikroplus ) ROM_REGION(0x4000, "rom", 0) ROM_LOAD("shadowoftheunicorn.rom", 0x0000, 0x4000, CRC(7085a0fd) SHA1(66cc823587b520af9636eed7a342d69d3dd15123)) ROM_END //------------------------------------------------- // INPUT_PORTS( mikroplus ) //------------------------------------------------- static INPUT_PORTS_START( mikroplus ) PORT_START("JOY") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_8WAY PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_8WAY PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_8WAY PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_8WAY PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_BUTTON1) INPUT_PORTS_END //------------------------------------------------- // input_ports - device-specific input ports //------------------------------------------------- ioport_constructor spectrum_mikroplus_device::device_input_ports() const { return INPUT_PORTS_NAME( mikroplus ); } //------------------------------------------------- // rom_region - device-specific ROM region //------------------------------------------------- const tiny_rom_entry *spectrum_mikroplus_device::device_rom_region() const { return ROM_NAME( mikroplus ); } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // spectrum_mikroplus_device - constructor //------------------------------------------------- spectrum_mikroplus_device::spectrum_mikroplus_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, SPECTRUM_MIKROPLUS, tag, owner, clock) , device_spectrum_expansion_interface(mconfig, *this) , m_rom(*this, "rom") , m_joy(*this, "JOY") { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void spectrum_mikroplus_device::device_start() { } //************************************************************************** // IMPLEMENTATION //************************************************************************** uint8_t spectrum_mikroplus_device::iorq_r(offs_t offset) { uint8_t data = offset & 1 ? m_slot->fb_r() : 0xff; if ((offset & 0xff) == 0xdf) { data = m_joy->read() | (0xff ^ 0x1f); } return data; } READ_LINE_MEMBER(spectrum_mikroplus_device::romcs) { return 1; } uint8_t spectrum_mikroplus_device::mreq_r(offs_t offset) { return m_rom->base()[offset & 0x3fff]; }