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-rw-r--r--src/devices/bus/vectrex/slot.c278
1 files changed, 278 insertions, 0 deletions
diff --git a/src/devices/bus/vectrex/slot.c b/src/devices/bus/vectrex/slot.c
new file mode 100644
index 00000000000..932248c22ce
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+++ b/src/devices/bus/vectrex/slot.c
@@ -0,0 +1,278 @@
+// license:BSD-3-Clause
+// copyright-holders:Fabio Priuli
+/***********************************************************************************************************
+
+ GCE Vectrex cart emulation
+ (through slot devices)
+
+ ***********************************************************************************************************/
+
+
+#include "emu.h"
+#include "slot.h"
+
+//**************************************************************************
+// GLOBAL VARIABLES
+//**************************************************************************
+
+const device_type VECTREX_CART_SLOT = &device_creator<vectrex_cart_slot_device>;
+
+//**************************************************************************
+// Vectrex Cartridges Interface
+//**************************************************************************
+
+//-------------------------------------------------
+// device_vectrex_cart_interface - constructor
+//-------------------------------------------------
+
+device_vectrex_cart_interface::device_vectrex_cart_interface(const machine_config &mconfig, device_t &device)
+ : device_slot_card_interface(mconfig, device),
+ m_rom(NULL),
+ m_rom_size(0)
+{
+}
+
+
+//-------------------------------------------------
+// ~device_vectrex_cart_interface - destructor
+//-------------------------------------------------
+
+device_vectrex_cart_interface::~device_vectrex_cart_interface()
+{
+}
+
+//-------------------------------------------------
+// rom_alloc - alloc the space for the cart
+//-------------------------------------------------
+
+void device_vectrex_cart_interface::rom_alloc(UINT32 size, const char *tag)
+{
+ if (m_rom == NULL)
+ {
+ m_rom = device().machine().memory().region_alloc(std::string(tag).append(VECSLOT_ROM_REGION_TAG).c_str(), size, 1, ENDIANNESS_LITTLE)->base();
+ m_rom_size = size;
+ }
+}
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// vectrex_cart_slot_device - constructor
+//-------------------------------------------------
+vectrex_cart_slot_device::vectrex_cart_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ device_t(mconfig, VECTREX_CART_SLOT, "GCE Vectrex Cartridge Slot", tag, owner, clock, "vectrex_cart_slot", __FILE__),
+ device_image_interface(mconfig, *this),
+ device_slot_interface(mconfig, *this),
+ m_type(VECTREX_STD),
+ m_vec3d(VEC3D_NONE)
+{
+}
+
+
+//-------------------------------------------------
+// vectrex_cart_slot_device - destructor
+//-------------------------------------------------
+
+vectrex_cart_slot_device::~vectrex_cart_slot_device()
+{
+}
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void vectrex_cart_slot_device::device_start()
+{
+ m_cart = dynamic_cast<device_vectrex_cart_interface *>(get_card_device());
+}
+
+//-------------------------------------------------
+// device_config_complete - perform any
+// operations now that the configuration is
+// complete
+//-------------------------------------------------
+
+void vectrex_cart_slot_device::device_config_complete()
+{
+ // set brief and instance name
+ update_names();
+}
+
+
+//-------------------------------------------------
+// Vectrex PCB
+//-------------------------------------------------
+
+struct vectrex_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 vectrex_slot slot_list[] =
+{
+ { VECTREX_STD, "vec_rom" },
+ { VECTREX_64K, "vec_rom64k" },
+ { VECTREX_SRAM, "vec_sram" }
+};
+
+#if 0
+static int vectrex_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;
+}
+#endif
+
+static const char *vectrex_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 "vec_rom";
+}
+
+/*-------------------------------------------------
+ call load
+ -------------------------------------------------*/
+
+bool vectrex_cart_slot_device::call_load()
+{
+ if (m_cart)
+ {
+ UINT32 size = (software_entry() == NULL) ? length() : get_software_region_length("rom");
+ UINT8 *ROM;
+
+ if (size > 0x10000)
+ {
+ seterror(IMAGE_ERROR_UNSPECIFIED, "Unsupported cartridge size");
+ return IMAGE_INIT_FAIL;
+ }
+
+ m_cart->rom_alloc((size < 0x1000) ? 0x1000 : size, tag());
+ ROM = m_cart->get_rom_base();
+
+ if (software_entry() == NULL)
+ fread(ROM, size);
+ else
+ memcpy(ROM, get_software_region("rom"), size);
+
+ // Verify the file is accepted by the Vectrex bios
+ if (memcmp(ROM, "g GCE", 5))
+ {
+ seterror(IMAGE_ERROR_UNSPECIFIED, "Invalid image");
+ return IMAGE_INIT_FAIL;
+ }
+
+ // determine type
+ m_type = VECTREX_STD;
+ if (!memcmp(ROM + 0x06, "SRAM", 4))
+ m_type = VECTREX_SRAM;
+ if (size > 0x8000)
+ m_type = VECTREX_64K;
+
+ //printf("Type: %s\n", vectrex_get_slot(m_type));
+
+ // determine 3D setup (to help video setup at machine_start)
+ if (!memcmp(ROM + 0x11, "NARROW", 6) && (ROM[0x39] == 0x0c))
+ m_vec3d = VEC3D_NARROW;
+
+ if (!memcmp(ROM + 0x11, "CRAZY COASTER", 13))
+ m_vec3d = VEC3D_CCOAST;
+
+ if (!memcmp(ROM + 0x11, "3D MINE STORM", 13))
+ m_vec3d = VEC3D_MINEST;
+
+ return IMAGE_INIT_PASS;
+ }
+
+ return IMAGE_INIT_PASS;
+}
+
+
+/*-------------------------------------------------
+ call softlist load
+ -------------------------------------------------*/
+
+bool vectrex_cart_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 vectrex_cart_slot_device::get_default_card_software(std::string &result)
+{
+ if (open_image_file(mconfig().options()))
+ {
+ const char *slot_string = "vec_rom";
+ UINT32 size = core_fsize(m_file);
+ dynamic_buffer rom(size);
+ int type = VECTREX_STD;
+
+ core_fread(m_file, &rom[0], size);
+
+ if (!memcmp(&rom[0x06], "SRAM", 4))
+ type = VECTREX_SRAM;
+ if (size > 0x8000)
+ type = VECTREX_64K;
+
+ slot_string = vectrex_get_slot(type);
+
+ //printf("type: %s\n", slot_string);
+ clear();
+
+ result.assign(slot_string);
+ return;
+ }
+
+ software_get_default_slot(result, "vec_rom");
+}
+
+/*-------------------------------------------------
+ read_rom
+ -------------------------------------------------*/
+
+READ8_MEMBER(vectrex_cart_slot_device::read_rom)
+{
+ if (m_cart)
+ return m_cart->read_rom(space, offset);
+ else
+ return 0xff;
+}
+
+/*-------------------------------------------------
+ write_ram
+ -------------------------------------------------*/
+
+WRITE8_MEMBER(vectrex_cart_slot_device::write_ram)
+{
+ if (m_cart)
+ m_cart->write_ram(space, offset, data);
+}
+
+/*-------------------------------------------------
+ write_bank
+ -------------------------------------------------*/
+
+WRITE8_MEMBER(vectrex_cart_slot_device::write_bank)
+{
+ if (m_cart)
+ m_cart->write_bank(space, offset, data);
+}