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// 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 = 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];
}
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