// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** Zaxxon/Super Zaxxon cartridge emulation Copyright MESS Team. Visit http://mamedev.org for licensing and usage restrictions. **********************************************************************/ #include "zaxxon.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** const device_type C64_ZAXXON = &device_creator; //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // c64_zaxxon_cartridge_device - constructor //------------------------------------------------- c64_zaxxon_cartridge_device::c64_zaxxon_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, C64_ZAXXON, "C64 Zaxxon cartridge", tag, owner, clock, "c64_zaxxon", __FILE__), device_c64_expansion_card_interface(mconfig, *this) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void c64_zaxxon_cartridge_device::device_start() { // state saving save_item(NAME(m_bank)); } //------------------------------------------------- // c64_cd_r - cartridge data read //------------------------------------------------- UINT8 c64_zaxxon_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 = m_roml[offset & 0xfff]; m_bank = BIT(offset, 12); } else if (!romh) { offs_t addr = (m_bank << 13) | (offset & 0x1fff); data = m_romh[addr]; } return data; }