// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** Commodore Plus/4 standard cartridge emulation Copyright MESS Team. Visit http://mamedev.org for licensing and usage restrictions. **********************************************************************/ #include "std.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** const device_type PLUS4_STD = &device_creator; //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // plus4_standard_cartridge_device - constructor //------------------------------------------------- plus4_standard_cartridge_device::plus4_standard_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, PLUS4_STD, "Plus/4 standard cartridge", tag, owner, clock, "plus4_standard", __FILE__), device_plus4_expansion_card_interface(mconfig, *this) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void plus4_standard_cartridge_device::device_start() { } //------------------------------------------------- // plus4_cd_r - cartridge data read //------------------------------------------------- UINT8 plus4_standard_cartridge_device::plus4_cd_r(address_space &space, offs_t offset, UINT8 data, int ba, int cs0, int c1l, int c2l, int cs1, int c1h, int c2h) { if (!c1l && m_c1l.bytes()) { data = m_c1l[offset & m_c1l.mask()]; } else if (!c1h && m_c1h.bytes()) { data = m_c1h[offset & m_c1h.mask()]; } else if (!c2l && m_c2l.bytes()) { data = m_c2l[offset & m_c2l.mask()]; } else if (!c2h && m_c2h.bytes()) { data = m_c2h[offset & m_c2h.mask()]; } return data; }