diff options
Diffstat (limited to 'src/devices/bus/coleco/exp.c')
-rw-r--r-- | src/devices/bus/coleco/exp.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/src/devices/bus/coleco/exp.c b/src/devices/bus/coleco/exp.c new file mode 100644 index 00000000000..c981406017e --- /dev/null +++ b/src/devices/bus/coleco/exp.c @@ -0,0 +1,156 @@ +// license:BSD-3-Clause +// copyright-holders:Curt Coder +/********************************************************************** + + ColecoVision cartridge port emulation + +**********************************************************************/ + +#include "exp.h" + + + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +const device_type COLECOVISION_CARTRIDGE_SLOT = &device_creator<colecovision_cartridge_slot_device>; + + + +//************************************************************************** +// DEVICE C64_EXPANSION CARD INTERFACE +//************************************************************************** + +//------------------------------------------------- +// device_colecovision_cartridge_interface - constructor +//------------------------------------------------- + +device_colecovision_cartridge_interface::device_colecovision_cartridge_interface(const machine_config &mconfig, device_t &device) : + device_slot_card_interface(mconfig, device), + m_rom(NULL), + m_rom_size(0) +{ + m_slot = dynamic_cast<colecovision_cartridge_slot_device *>(device.owner()); +} + +void device_colecovision_cartridge_interface::rom_alloc(size_t size) +{ + if (m_rom == NULL) + { + m_rom = device().machine().memory().region_alloc("coleco_cart:rom", size, 1, ENDIANNESS_LITTLE)->base(); + m_rom_size = size; + } +} + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// colecovision_cartridge_slot_device - constructor +//------------------------------------------------- + +colecovision_cartridge_slot_device::colecovision_cartridge_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + device_t(mconfig, COLECOVISION_CARTRIDGE_SLOT, "ColecoVision cartridge port", tag, owner, clock, "coleco_cartridge_port", __FILE__), + device_slot_interface(mconfig, *this), + device_image_interface(mconfig, *this) +{ +} + + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void colecovision_cartridge_slot_device::device_start() +{ + m_card = dynamic_cast<device_colecovision_cartridge_interface *>(get_card_device()); +} + + +//------------------------------------------------- +// call_load - +//------------------------------------------------- + +bool colecovision_cartridge_slot_device::call_load() +{ + if (m_card) + { + size_t size = (software_entry() == NULL) ? length() : get_software_region_length("rom"); + m_card->rom_alloc(size); + + if (software_entry() == NULL) + { + fread(m_card->m_rom, size); + } + else + { + // TODO 8000/a000/c000/e000 + memcpy(m_card->m_rom, get_software_region("rom"), size); + } + } + + return IMAGE_INIT_PASS; +} + + +//------------------------------------------------- +// call_softlist_load - +//------------------------------------------------- + +bool colecovision_cartridge_slot_device::call_softlist_load(software_list_device &swlist, const char *swname, const rom_entry *start_entry) +{ + load_software_part_region(*this, swlist, swname, start_entry); + + return true; +} + + +//------------------------------------------------- +// get_default_card_software - +//------------------------------------------------- + +void colecovision_cartridge_slot_device::get_default_card_software(std::string &result) +{ + if (open_image_file(mconfig().options())) + { + UINT32 length = core_fsize(m_file); + if (length == 0x100000 || length == 0x200000) + { + software_get_default_slot(result, "xin1"); + return; + } + } + software_get_default_slot(result, "standard"); +} + + +//------------------------------------------------- +// bd_r - cartridge data read +//------------------------------------------------- + +UINT8 colecovision_cartridge_slot_device::bd_r(address_space &space, offs_t offset, UINT8 data, int _8000, int _a000, int _c000, int _e000) +{ + if (m_card != NULL) + { + data = m_card->bd_r(space, offset, data, _8000, _a000, _c000, _e000); + } + + return data; +} + + +//------------------------------------------------- +// SLOT_INTERFACE( colecovision_cartridges ) +//------------------------------------------------- + +#include "std.h" +#include "xin1.h" + +SLOT_INTERFACE_START( colecovision_cartridges ) + // the following need ROMs from the software list + SLOT_INTERFACE_INTERNAL("standard", COLECOVISION_STANDARD) + SLOT_INTERFACE_INTERNAL("xin1", COLECOVISION_XIN1) +SLOT_INTERFACE_END |