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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
REX Datentechnik cartridge emulation
Copyright MESS Team.
Visit http://mamedev.org for licensing and usage restrictions.
**********************************************************************/
#include "rex.h"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
const device_type C64_REX = &device_creator<c64_rex_cartridge_device>;
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// c64_rex_cartridge_device - constructor
//-------------------------------------------------
c64_rex_cartridge_device::c64_rex_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
device_t(mconfig, C64_REX, "C64 Rex cartridge", tag, owner, clock, "c64_rex", __FILE__),
device_c64_expansion_card_interface(mconfig, *this)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void c64_rex_cartridge_device::device_start()
{
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void c64_rex_cartridge_device::device_reset()
{
m_exrom = 0;
}
//-------------------------------------------------
// c64_cd_r - cartridge data read
//-------------------------------------------------
UINT8 c64_rex_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)
{
data = m_roml[offset & 0x1fff];
}
else if (!io2)
{
if ((offset & 0xc0) == 0xc0)
{
m_exrom = 0;
}
else
{
m_exrom = 1;
}
}
return data;
}
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