// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** Kingsoft cartridge emulation **********************************************************************/ #include "emu.h" #include "kingsoft.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** DEFINE_DEVICE_TYPE(C64_KINGSOFT, c64_kingsoft_cartridge_device, "c64_kingsoft", "C64 Kingsoft cartridge") //************************************************************************** // 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_t clock) : device_t(mconfig, C64_KINGSOFT, tag, owner, clock), 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_t c64_kingsoft_cartridge_device::c64_cd_r(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 (!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(offs_t offset, uint8_t 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))) ? 0 : 1); }