/********************************************************************** Rex ExOS cartridge emulation Copyright MESS Team. Visit http://mamedev.org for licensing and usage restrictions. **********************************************************************/ #include "c64_exos.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** const device_type C64_EXOS = &device_creator; //************************************************************************** // 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 clock) : device_t(mconfig, C64_EXOS, "C64 ExOS cartridge", tag, owner, clock, "c64_exos", __FILE__), 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 c64_exos_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 (!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, int hiram) { return !(ba & rw & ((offset & 0xe000) == 0xe000) & hiram); }