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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
Access Software MACH 5 cartridge emulation
**********************************************************************/
#include "mach5.h"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
const device_type C64_MACH5 = &device_creator<c64_mach5_cartridge_device>;
//-------------------------------------------------
// INPUT_PORTS( c64_mach5 )
//-------------------------------------------------
static INPUT_PORTS_START( c64_mach5 )
PORT_START("S1")
PORT_DIPNAME( 0x01, 0x00, "Mode" )
PORT_DIPSETTING( 0x00, "C64" )
PORT_DIPSETTING( 0x01, "C128" )
PORT_START("S2")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("Reset") PORT_CODE(KEYCODE_F11) PORT_WRITE_LINE_DEVICE_MEMBER(DEVICE_SELF_OWNER, c64_expansion_slot_device, reset_w)
INPUT_PORTS_END
//-------------------------------------------------
// input_ports - device-specific input ports
//-------------------------------------------------
ioport_constructor c64_mach5_cartridge_device::device_input_ports() const
{
return INPUT_PORTS_NAME( c64_mach5 );
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// c64_mach5_cartridge_device - constructor
//-------------------------------------------------
c64_mach5_cartridge_device::c64_mach5_cartridge_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock) :
device_t(mconfig, C64_MACH5, "C64 MACH5 cartridge", tag, owner, clock, "c64_mach5", __FILE__),
device_c64_expansion_card_interface(mconfig, *this),
m_s1(*this, "S1"), m_c128(false)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void c64_mach5_cartridge_device::device_start()
{
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void c64_mach5_cartridge_device::device_reset()
{
m_c128 = m_s1->read();
if (!m_c128)
{
m_exrom = 0;
}
}
//-------------------------------------------------
// c64_cd_r - cartridge data read
//-------------------------------------------------
UINT8 c64_mach5_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 (!roml || !romh || !io1 || !io2)
{
data = m_roml[offset & 0x1fff];
}
return data;
}
//-------------------------------------------------
// c64_cd_w - cartridge data write
//-------------------------------------------------
void c64_mach5_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 (!m_c128)
{
if (!io1)
{
m_exrom = 0;
}
else if (!io2)
{
m_exrom = 1;
}
}
}
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