// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** Dela 7x8K EPROM cartridge emulation **********************************************************************/ #include "emu.h" #include "dela_ep7x8.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** DEFINE_DEVICE_TYPE(C64_DELA_EP7X8, c64_dela_ep7x8_cartridge_device, "c64_dela_ep7x8", "C64 Dela 7x8KB EPROM cartridge") //------------------------------------------------- // device_add_mconfig - add device configuration //------------------------------------------------- void c64_dela_ep7x8_cartridge_device::device_add_mconfig(machine_config &config) { GENERIC_SOCKET(config, m_eprom[0], generic_linear_slot, nullptr, "bin,rom"); GENERIC_SOCKET(config, m_eprom[1], generic_linear_slot, nullptr, "bin,rom"); GENERIC_SOCKET(config, m_eprom[2], generic_linear_slot, nullptr, "bin,rom"); GENERIC_SOCKET(config, m_eprom[3], generic_linear_slot, nullptr, "bin,rom"); GENERIC_SOCKET(config, m_eprom[4], generic_linear_slot, nullptr, "bin,rom"); GENERIC_SOCKET(config, m_eprom[5], generic_linear_slot, nullptr, "bin,rom"); GENERIC_SOCKET(config, m_eprom[6], generic_linear_slot, nullptr, "bin,rom"); } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // c64_dela_ep7x8_cartridge_device - constructor //------------------------------------------------- c64_dela_ep7x8_cartridge_device::c64_dela_ep7x8_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, C64_DELA_EP7X8, tag, owner, clock), device_c64_expansion_card_interface(mconfig, *this), m_eprom(*this, "rom%u", 1U) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void c64_dela_ep7x8_cartridge_device::device_start() { // state saving save_item(NAME(m_bank)); } //------------------------------------------------- // device_reset - device-specific reset //------------------------------------------------- void c64_dela_ep7x8_cartridge_device::device_reset() { m_bank = 0xfe; m_exrom = 0; } //------------------------------------------------- // c64_cd_r - cartridge data read //------------------------------------------------- uint8_t c64_dela_ep7x8_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) { offs_t addr = offset & 0x1fff; if (!BIT(m_bank, 0)) data |= m_roml[addr]; if (!BIT(m_bank, 1)) data |= m_eprom[0]->read_rom(addr); if (!BIT(m_bank, 2)) data |= m_eprom[1]->read_rom(addr); if (!BIT(m_bank, 3)) data |= m_eprom[2]->read_rom(addr); if (!BIT(m_bank, 4)) data |= m_eprom[3]->read_rom(addr); if (!BIT(m_bank, 5)) data |= m_eprom[4]->read_rom(addr); if (!BIT(m_bank, 6)) data |= m_eprom[5]->read_rom(addr); if (!BIT(m_bank, 7)) data |= m_eprom[6]->read_rom(addr); } return data; } //------------------------------------------------- // c64_cd_w - cartridge data write //------------------------------------------------- void c64_dela_ep7x8_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_bank = data; m_exrom = (data == 0xff); } }