// 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()); }