// license:BSD-3-Clause // copyright-holders:R. Belmont /********************************************************************* a2cffa.c Implementation of Rich Dreher's IDE/CompactFlash card for the Apple II. http://www.dreher.net/ *********************************************************************/ #include "emu.h" #include "a2cffa.h" #include "machine/ataintf.h" #include "imagedev/harddriv.h" #include "softlist.h" /*************************************************************************** PARAMETERS ***************************************************************************/ #define LOG_A2CFFA 1 //************************************************************************** // GLOBAL VARIABLES //************************************************************************** DEFINE_DEVICE_TYPE(A2BUS_CFFA2, a2bus_cffa2_device, "a2cffa2", "CFFA2000 Compact Flash (65C02 firmware, www.dreher.net)") DEFINE_DEVICE_TYPE(A2BUS_CFFA2_6502, a2bus_cffa2_6502_device, "a2cffa02", "CFFA2000 Compact Flash (6502 firmware, www.dreher.net)") #define CFFA2_ROM_REGION "cffa2_rom" #define CFFA2_ATA_TAG "cffa2_ata" ROM_START( cffa2 ) ROM_REGION(0x1000, CFFA2_ROM_REGION, 0) ROM_LOAD( "cffa20eec02.bin", 0x000000, 0x001000, CRC(fb3726f8) SHA1(080ff88f19de22328e162954ee2b51ee65f9d5cd) ) ROM_END ROM_START( cffa2_6502 ) ROM_REGION(0x1000, CFFA2_ROM_REGION, 0) ROM_LOAD( "cffa20ee02.bin", 0x000000, 0x001000, CRC(3ecafce5) SHA1(d600692ed9626668233a22a48236af639410cb7b) ) ROM_END /*************************************************************************** FUNCTION PROTOTYPES ***************************************************************************/ //------------------------------------------------- // device_add_mconfig - add device configuration //------------------------------------------------- void a2bus_cffa2000_device::device_add_mconfig(machine_config &config) { ATA_INTERFACE(config, m_ata).options(ata_devices, "hdd", nullptr, false); // not yet, the core explodes // SOFTWARE_LIST(config, "hdd_list").set_original("apple2gs_hdd"); } //------------------------------------------------- // rom_region - device-specific ROM region //------------------------------------------------- const tiny_rom_entry *a2bus_cffa2000_device::device_rom_region() const { return ROM_NAME( cffa2 ); } const tiny_rom_entry *a2bus_cffa2_6502_device::device_rom_region() const { return ROM_NAME( cffa2_6502 ); } //************************************************************************** // LIVE DEVICE //************************************************************************** a2bus_cffa2000_device::a2bus_cffa2000_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, type, tag, owner, clock), device_a2bus_card_interface(mconfig, *this), m_ata(*this, CFFA2_ATA_TAG), m_rom(nullptr), m_lastdata(0), m_lastreaddata(0), m_writeprotect(false), m_inwritecycle(false) { } a2bus_cffa2_device::a2bus_cffa2_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : a2bus_cffa2000_device(mconfig, A2BUS_CFFA2, tag, owner, clock), device_nvram_interface(mconfig, *this) { } a2bus_cffa2_6502_device::a2bus_cffa2_6502_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : a2bus_cffa2000_device(mconfig, A2BUS_CFFA2_6502, tag, owner, clock), device_nvram_interface(mconfig, *this) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void a2bus_cffa2000_device::device_start() { m_rom = device().machine().root_device().memregion(this->subtag(CFFA2_ROM_REGION).c_str())->base(); // patch default setting so slave device is enabled and up to 13 devices on both connectors m_rom[0x800] = 13; m_rom[0x801] = 13; save_item(NAME(m_lastdata)); save_item(NAME(m_lastreaddata)); save_item(NAME(m_writeprotect)); save_item(NAME(m_eeprom)); save_item(NAME(m_inwritecycle)); } void a2bus_cffa2000_device::device_reset() { m_writeprotect = true; m_inwritecycle = false; } /*------------------------------------------------- read_c0nx - called for reads from this card's c0nx space -------------------------------------------------*/ uint8_t a2bus_cffa2000_device::read_c0nx(uint8_t offset) { switch (offset) { case 0: return m_lastreaddata>>8; case 3: m_writeprotect = false; break; case 4: m_writeprotect = true; break; case 8: // Apple /// driver uses sta $c080,x when writing, which causes spurious reads of c088 if (!m_inwritecycle) { m_lastreaddata = m_ata->read_cs0(offset - 8); } return m_lastreaddata & 0xff; case 9: case 0xa: case 0xb: case 0xc: case 0xd: case 0xe: case 0xf: return m_ata->read_cs0(offset-8, 0xff); } return 0xff; } /*------------------------------------------------- write_c0nx - called for writes to this card's c0nx space -------------------------------------------------*/ void a2bus_cffa2000_device::write_c0nx(uint8_t offset, uint8_t data) { m_inwritecycle = false; switch (offset) { case 0: m_lastdata &= 0x00ff; m_lastdata |= data<<8; // printf("%02x to 0, m_lastdata = %x\n", data, m_lastdata); m_inwritecycle = true; break; case 3: m_writeprotect = false; break; case 4: m_writeprotect = true; break; case 8: m_lastdata &= 0xff00; m_lastdata |= data; // printf("%02x to 8, m_lastdata = %x\n", data, m_lastdata); m_ata->write_cs0(offset-8, m_lastdata); break; case 9: case 0xa: case 0xb: case 0xc: case 0xd: case 0xe: case 0xf: m_ata->write_cs0(offset-8, data, 0xff); break; } } /*------------------------------------------------- read_cnxx - called for reads from this card's cnxx space -------------------------------------------------*/ uint8_t a2bus_cffa2000_device::read_cnxx(uint8_t offset) { int const slotimg = slotno() * 0x100; // ROM contains a CnXX image for each of slots 1-7 return m_eeprom[offset+slotimg]; } /*------------------------------------------------- read_c800 - called for reads from this card's c800 space -------------------------------------------------*/ uint8_t a2bus_cffa2000_device::read_c800(uint16_t offset) { return m_eeprom[offset+0x800]; } void a2bus_cffa2000_device::write_c800(uint16_t offset, uint8_t data) { if (!m_writeprotect) { m_eeprom[offset + 0x800] = data; } } // NVRAM device virtual overrides to provide saving/loading of settings changes void a2bus_cffa2_device::nvram_default() { memcpy(m_eeprom, m_rom, 0x1000); } void a2bus_cffa2_device::nvram_read(emu_file &file) { file.read(m_eeprom, 0x1000); } void a2bus_cffa2_device::nvram_write(emu_file &file) { file.write(m_eeprom, 0x1000); } void a2bus_cffa2_6502_device::nvram_default() { memcpy(m_eeprom, m_rom, 0x1000); } void a2bus_cffa2_6502_device::nvram_read(emu_file &file) { file.read(m_eeprom, 0x1000); } void a2bus_cffa2_6502_device::nvram_write(emu_file &file) { file.write(m_eeprom, 0x1000); }