// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** Commodore 64 Standard 8K/16K cartridge emulation Copyright MESS Team. Visit http://mamedev.org for licensing and usage restrictions. **********************************************************************/ #include "std.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** const device_type C64_STD = &device_creator; //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // c64_standard_cartridge_device - constructor //------------------------------------------------- c64_standard_cartridge_device::c64_standard_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, C64_STD, "C64 standard cartridge", tag, owner, clock, "c64_standard", __FILE__), device_c64_expansion_card_interface(mconfig, *this) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void c64_standard_cartridge_device::device_start() { } //------------------------------------------------- // c64_cd_r - cartridge data read //------------------------------------------------- UINT8 c64_standard_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 && m_roml.bytes()) { data = m_roml[offset & m_roml.mask()]; } else if (!romh) { if (m_romh.bytes()) { data = m_romh[offset & m_romh.mask()]; } else if (m_roml.mask() == 0x3fff) { data = m_roml[offset & m_roml.mask()]; } } return data; }