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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
Rex ExOS cartridge emulation
**********************************************************************/
#include "emu.h"
#include "exos.h"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
DEFINE_DEVICE_TYPE(C64_EXOS, c64_exos_cartridge_device, "c64_exos", "C64 ExOS cartridge")
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// c64_exos_cartridge_device - constructor
//-------------------------------------------------
c64_exos_cartridge_device::c64_exos_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
device_t(mconfig, C64_EXOS, tag, owner, clock),
device_c64_expansion_card_interface(mconfig, *this)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void c64_exos_cartridge_device::device_start()
{
}
//-------------------------------------------------
// c64_cd_r - cartridge data read
//-------------------------------------------------
uint8_t c64_exos_cartridge_device::c64_cd_r(offs_t offset, uint8_t data, int sphi2, int ba, int roml, int romh, int io1, int io2)
{
if (!romh)
{
data = m_romh[offset & 0x1fff];
}
return data;
}
//-------------------------------------------------
// c64_game_r - GAME read
//-------------------------------------------------
int c64_exos_cartridge_device::c64_game_r(offs_t offset, int sphi2, int ba, int rw)
{
return !(ba & rw & ((offset & 0xe000) == 0xe000) & m_slot->hiram());
}
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