// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** REX Datentechnik cartridge emulation **********************************************************************/ #include "emu.h" #include "rex.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** DEFINE_DEVICE_TYPE(C64_REX, c64_rex_cartridge_device, "c64_rex", "C64 Rex cartridge") //************************************************************************** // 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_t clock) : device_t(mconfig, C64_REX, tag, owner, clock), 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_t c64_rex_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) { data = m_roml[offset & 0x1fff]; } else if (!io2) { if ((offset & 0xc0) == 0xc0) { m_exrom = 0; } else { m_exrom = 1; } } return data; }