diff options
Diffstat (limited to 'src/devices/bus/electron/cart/romp144.cpp')
-rw-r--r-- | src/devices/bus/electron/cart/romp144.cpp | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/src/devices/bus/electron/cart/romp144.cpp b/src/devices/bus/electron/cart/romp144.cpp deleted file mode 100644 index 6e4eb96bd84..00000000000 --- a/src/devices/bus/electron/cart/romp144.cpp +++ /dev/null @@ -1,162 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Nigel Barnes -/********************************************************************** - - JAFA Systems ROMPlus-144 - -**********************************************************************/ - - -#include "emu.h" -#include "romp144.h" - - -//************************************************************************** -// DEVICE DEFINITIONS -//************************************************************************** - -DEFINE_DEVICE_TYPE(ELECTRON_ROMP144, electron_romp144_device, "electron_romp144", "JAFA Systems ROMPlus-144") - - -//------------------------------------------------- -// device_add_mconfig - add device configuration -//------------------------------------------------- - -void electron_romp144_device::device_add_mconfig(machine_config &config) -{ - /* rom sockets */ - GENERIC_SOCKET(config, m_romslot[0], generic_plain_slot, "electron_rom", "bin,rom"); - m_romslot[0]->set_device_load(device_image_load_delegate(&electron_romp144_device::device_image_load_rom0, this)); - GENERIC_SOCKET(config, m_romslot[1], generic_plain_slot, "electron_rom", "bin,rom"); - m_romslot[1]->set_device_load(device_image_load_delegate(&electron_romp144_device::device_image_load_rom1, this)); - GENERIC_SOCKET(config, m_romslot[2], generic_plain_slot, "electron_rom", "bin,rom"); - m_romslot[2]->set_device_load(device_image_load_delegate(&electron_romp144_device::device_image_load_rom2, this)); - GENERIC_SOCKET(config, m_romslot[3], generic_plain_slot, "electron_rom", "bin,rom"); - m_romslot[3]->set_device_load(device_image_load_delegate(&electron_romp144_device::device_image_load_rom3, this)); - GENERIC_SOCKET(config, m_romslot[4], generic_plain_slot, "electron_rom", "bin,rom"); - m_romslot[4]->set_device_load(device_image_load_delegate(&electron_romp144_device::device_image_load_rom4, this)); - GENERIC_SOCKET(config, m_romslot[5], generic_plain_slot, "electron_rom", "bin,rom"); - m_romslot[5]->set_device_load(device_image_load_delegate(&electron_romp144_device::device_image_load_rom5, this)); - GENERIC_SOCKET(config, m_romslot[6], generic_plain_slot, "electron_rom", "bin,rom"); - m_romslot[6]->set_device_load(device_image_load_delegate(&electron_romp144_device::device_image_load_rom6, this)); -} - -//************************************************************************** -// LIVE DEVICE -//************************************************************************** - -//------------------------------------------------- -// electron_romp144_device - constructor -//------------------------------------------------- - -electron_romp144_device::electron_romp144_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) - : device_t(mconfig, ELECTRON_ROMP144, tag, owner, clock) - , device_electron_cart_interface(mconfig, *this) - , m_romslot(*this, "rom%u", 7) -{ -} - -//------------------------------------------------- -// device_start - device-specific startup -//------------------------------------------------- - -void electron_romp144_device::device_start() -{ - m_rom_select = 0xff; - m_rom_latch = 0xff; - - save_item(NAME(m_rom_select)); - save_item(NAME(m_rom_latch)); -} - -//------------------------------------------------- -// read - cartridge data read -//------------------------------------------------- - -uint8_t electron_romp144_device::read(offs_t offset, int infc, int infd, int romqa, int oe, int oe2) -{ - uint8_t data = 0xff; - - if (oe) - { - if (romqa) - { - if ((m_rom_select & 0x07) == 0x00) - data = m_ram[offset & 0x3fff]; - else - data = m_romslot[(m_rom_select & 0x07) - 1]->read_rom(offset & 0x3fff); - } - else - { - if ((m_rom_select & 0x0f) == 0x08) - data = m_ram[(offset & 0x3fff) | 0x4000]; - else - data = m_rom[offset & 0x1fff]; - - /* roms selected with a read to latch */ - if ((offset & 0x3f00) == 0x3f00) - { - m_rom_latch = offset & 0x0f; - } - } - } - - return data; -} - -//------------------------------------------------- -// write - cartridge data write -//------------------------------------------------- - -void electron_romp144_device::write(offs_t offset, uint8_t data, int infc, int infd, int romqa, int oe, int oe2) -{ - if (oe) - { - if (romqa) - { - if ((m_rom_select & 0x07) == 0x00) - m_ram[offset & 0x3fff] = data; - } - else - { - if ((m_rom_select & 0x0f) == 0x08) - m_ram[(offset & 0x3fff) | 0x4000] = data; - - /* roms selected with a write to select */ - if ((offset & 0x3f00) == 0x3f00) - { - /* does the write match the read (upper RAM cannot be de-selected to protect *RSUBSTITUTE) */ - if (m_rom_latch == (offset & 0x0f) && m_rom_select != 0x08) - { - m_rom_select = m_rom_latch; - } - } - } - } -} - - -//************************************************************************** -// IMPLEMENTATION -//************************************************************************** - -image_init_result electron_romp144_device::load_rom(device_image_interface &image, generic_slot_device *slot) -{ - uint32_t size = slot->common_get_size("rom"); - - // socket accepts 8K and 16K ROM only - if (size != 0x2000 && size != 0x4000) - { - image.seterror(IMAGE_ERROR_UNSPECIFIED, "Invalid size: Only 8K/16K is supported"); - return image_init_result::FAIL; - } - - slot->rom_alloc(0x4000, GENERIC_ROM8_WIDTH, ENDIANNESS_LITTLE); - slot->common_load_rom(slot->get_rom_base(), size, "rom"); - - // mirror 8K ROMs - uint8_t *crt = slot->get_rom_base(); - if (size <= 0x2000) memcpy(crt + 0x2000, crt, 0x2000); - - return image_init_result::PASS; -} |