// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** Kingsoft cartridge emulation Copyright MESS Team. Visit http://mamedev.org for licensing and usage restrictions. **********************************************************************/ #include "kingsoft.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** const device_type C64_KINGSOFT = &device_creator; //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // c64_kingsoft_cartridge_device - constructor //------------------------------------------------- c64_kingsoft_cartridge_device::c64_kingsoft_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, C64_KINGSOFT, "C64 Kingsoft cartridge", tag, owner, clock, "c64_kingsoft", __FILE__), device_c64_expansion_card_interface(mconfig, *this) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void c64_kingsoft_cartridge_device::device_start() { } //------------------------------------------------- // device_reset - device-specific reset //------------------------------------------------- void c64_kingsoft_cartridge_device::device_reset() { m_exrom = 0; } //------------------------------------------------- // c64_cd_r - cartridge data read //------------------------------------------------- UINT8 c64_kingsoft_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 & 0x1fff]; } else if (!romh) { data = m_romh[(m_exrom << 13) | (offset & 0x1fff)]; } else if (!io1) { m_exrom = 0; } return data; } //------------------------------------------------- // c64_cd_w - cartridge data write //------------------------------------------------- void c64_kingsoft_cartridge_device::c64_cd_w(address_space &space, offs_t offset, UINT8 data, int sphi2, int ba, int roml, int romh, int io1, int io2) { if (!io1) { m_exrom = 1; } } //------------------------------------------------- // c64_game_r - GAME read //------------------------------------------------- int c64_kingsoft_cartridge_device::c64_game_r(offs_t offset, int sphi2, int ba, int rw) { return m_exrom & !(ba & rw & ((offset >= 0x8000 && offset < 0xc000) || (offset >= 0xe000))); }