uint8_t c64_vizawrite_cartridge_device::c64_cd_r(address_space &space, offs_t offset, uint8_t data, int sphi2, int ba, int roml, int romh, int io1, int io2)
{
if (!roml)
{
offs_t addr = (m_game << 13) | (offset & 0x1fff);
data = UNSCRAMBLE_DATA(m_roml[UNSCRAMBLE_ADDRESS(addr)]);
}
else if (!romh)
{
offs_t addr = offset & 0x1fff;
data = UNSCRAMBLE_DATA(m_romh[UNSCRAMBLE_ADDRESS(addr)]);
}
return data;
}
UINT8 c64_vizastar_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 = UNSCRAMBLE_DATA(m_roml[UNSCRAMBLE_ADDRESS(offset & 0xfff)]);
}
return data;
}
UINT8 c64_warp_speed_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)
{
offs_t addr = UNSCRAMBLE_ADDRESS(offset & 0x3fff);
data = UNSCRAMBLE_DATA(m_roml[addr]);
}
return data;
}
uint8_t c64_silverrock_cartridge_device::c64_cd_r(address_space &space, offs_t offset, uint8_t data, int sphi2, int ba, int roml, int romh, int io1, int io2)
{
if (!roml)
{
offs_t addr = (m_bank << 13) | (offset & 0x1fff);
addr = (addr & 0x10000) | UNSCRAMBLE_ADDRESS(addr);
data = UNSCRAMBLE_DATA(m_roml[addr]);
}
return data;
}