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-rw-r--r--src/devices/bus/m5/slot.cpp276
1 files changed, 276 insertions, 0 deletions
diff --git a/src/devices/bus/m5/slot.cpp b/src/devices/bus/m5/slot.cpp
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+++ b/src/devices/bus/m5/slot.cpp
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+// license:BSD-3-Clause
+// copyright-holders:Fabio Priuli
+/***********************************************************************************************************
+
+ M5 cart emulation
+ (through slot devices)
+
+ ***********************************************************************************************************/
+
+
+#include "emu.h"
+#include "slot.h"
+
+//**************************************************************************
+// GLOBAL VARIABLES
+//**************************************************************************
+
+const device_type M5_CART_SLOT = &device_creator<m5_cart_slot_device>;
+
+//**************************************************************************
+// M5 Cartridges Interface
+//**************************************************************************
+
+//-------------------------------------------------
+// device_m5_cart_interface - constructor
+//-------------------------------------------------
+
+device_m5_cart_interface::device_m5_cart_interface(const machine_config &mconfig, device_t &device)
+ : device_slot_card_interface(mconfig, device),
+ m_rom(NULL),
+ m_rom_size(0)
+{
+}
+
+
+//-------------------------------------------------
+// ~device_m5_cart_interface - destructor
+//-------------------------------------------------
+
+device_m5_cart_interface::~device_m5_cart_interface()
+{
+}
+
+//-------------------------------------------------
+// rom_alloc - alloc the space for the cart
+//-------------------------------------------------
+
+void device_m5_cart_interface::rom_alloc(UINT32 size, const char *tag)
+{
+ if (m_rom == NULL)
+ {
+ m_rom = device().machine().memory().region_alloc(std::string(tag).append(M5SLOT_ROM_REGION_TAG).c_str(), size, 1, ENDIANNESS_LITTLE)->base();
+ m_rom_size = size;
+ }
+}
+
+
+//-------------------------------------------------
+// ram_alloc - alloc the space for the ram
+//-------------------------------------------------
+
+void device_m5_cart_interface::ram_alloc(UINT32 size)
+{
+ m_ram.resize(size);
+}
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// m5_cart_slot_device - constructor
+//-------------------------------------------------
+m5_cart_slot_device::m5_cart_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ device_t(mconfig, M5_CART_SLOT, "M5 Cartridge Slot", tag, owner, clock, "m5_cart_slot", __FILE__),
+ device_image_interface(mconfig, *this),
+ device_slot_interface(mconfig, *this),
+ m_type(M5_STD), m_cart(nullptr)
+{
+}
+
+
+//-------------------------------------------------
+// m5_cart_slot_device - destructor
+//-------------------------------------------------
+
+m5_cart_slot_device::~m5_cart_slot_device()
+{
+}
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void m5_cart_slot_device::device_start()
+{
+ m_cart = dynamic_cast<device_m5_cart_interface *>(get_card_device());
+}
+
+//-------------------------------------------------
+// device_config_complete - perform any
+// operations now that the configuration is
+// complete
+//-------------------------------------------------
+
+void m5_cart_slot_device::device_config_complete()
+{
+ // set brief and instance name
+ update_names();
+}
+
+
+//-------------------------------------------------
+// M5 PCB
+//-------------------------------------------------
+
+struct m5_slot
+{
+ int pcb_id;
+ const char *slot_option;
+};
+
+// Here, we take the feature attribute from .xml (i.e. the PCB name) and we assign a unique ID to it
+static const m5_slot slot_list[] =
+{
+ {EM_5,"em-5"},
+ {MEM64KBI,"64kbi"},
+ {MEM64KBF,"64kbf"},
+ {MEM64KRX,"64krx"}
+};
+
+static int m5_get_pcb_id(const char *slot)
+{
+ for (int i = 0; i < ARRAY_LENGTH(slot_list); i++)
+ {
+ if (!core_stricmp(slot_list[i].slot_option, slot))
+ return slot_list[i].pcb_id;
+ }
+
+ return 0;
+}
+
+static const char *m5_get_slot(int type)
+{
+ for (int i = 0; i < ARRAY_LENGTH(slot_list); i++)
+ {
+ if (slot_list[i].pcb_id == type)
+ return slot_list[i].slot_option;
+ }
+
+ return "std";
+}
+
+
+/*-------------------------------------------------
+ call load
+ -------------------------------------------------*/
+
+bool m5_cart_slot_device::call_load()
+{
+ if (m_cart)
+ {
+ m_type=M5_STD;
+
+ if (software_entry() != NULL)
+ {
+ const char *pcb_name = get_feature("slot");
+ //software_info *name=m_software_info_ptr;
+ if (pcb_name) //is it ram cart?
+ m_type = m5_get_pcb_id(m_full_software_name.c_str());
+ else
+ m_type=M5_STD; //standard cart(no feature line in xml)
+ }
+
+ if (m_type == M5_STD || m_type>2) //carts with roms
+ {
+
+ UINT32 size = (software_entry() == NULL) ? length() : get_software_region_length("rom");
+
+ if (size > 0x5000 && m_type == M5_STD)
+ {
+ seterror(IMAGE_ERROR_UNSPECIFIED, "Image extends beyond the expected size for an M5 cart");
+ return IMAGE_INIT_FAIL;
+ }
+
+ m_cart->rom_alloc(size, tag());
+
+ if (software_entry() == NULL)
+ fread(m_cart->get_rom_base(), size);
+ else
+ memcpy(m_cart->get_rom_base(), get_software_region("rom"), size);
+
+ }
+ if (!M5_STD)
+ if (get_software_region("ram"))
+ m_cart->ram_alloc(get_software_region_length("ram"));
+
+
+ //printf("Type: %s\n", m5_get_slot(m_type));
+ }
+
+ return IMAGE_INIT_PASS;
+}
+
+
+/*-------------------------------------------------
+ call softlist load
+ -------------------------------------------------*/
+
+bool m5_cart_slot_device::call_softlist_load(software_list_device &swlist, const char *swname, const rom_entry *start_entry)
+{
+ machine().rom_load().load_software_part_region(*this, swlist, swname, start_entry);
+ return TRUE;
+}
+
+
+/*-------------------------------------------------
+ get default card software
+ -------------------------------------------------*/
+
+std::string m5_cart_slot_device::get_default_card_software()
+{
+ std::string result;
+ if (open_image_file(mconfig().options()))
+ {
+ const char *slot_string = "std";
+ //UINT32 size = core_fsize(m_file);
+ int type = M5_STD;
+
+
+ slot_string = m5_get_slot(type);
+
+ //printf("type: %s\n", slot_string);
+ clear();
+
+ result.assign(slot_string);
+ return result;
+ }
+
+ return software_get_default_slot("std");
+}
+
+/*-------------------------------------------------
+ read
+ -------------------------------------------------*/
+
+READ8_MEMBER(m5_cart_slot_device::read_rom)
+{
+ if (m_cart)
+ return m_cart->read_rom(space, offset);
+ else
+ return 0xff;
+}
+
+/*-------------------------------------------------
+ read
+ -------------------------------------------------*/
+
+READ8_MEMBER(m5_cart_slot_device::read_ram)
+{
+ if (m_cart)
+ return m_cart->read_ram(space, offset);
+ else
+ return 0xff;
+}
+
+/*-------------------------------------------------
+ write
+ -------------------------------------------------*/
+
+WRITE8_MEMBER(m5_cart_slot_device::write_ram)
+{
+ if (m_cart)
+ m_cart->write_ram(space, offset, data);
+}