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// license:BSD-3-Clause
// copyright-holders:Fabio Priuli
#ifndef __SCV_SLOT_H
#define __SCV_SLOT_H
#include "softlist_dev.h"
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
/* PCB */
enum
{
SCV_8K = 0,
SCV_16K,
SCV_32K,
SCV_32K_RAM,
SCV_64K,
SCV_128K,
SCV_128K_RAM
};
// ======================> device_scv_cart_interface
class device_scv_cart_interface : public device_slot_card_interface
{
public:
// construction/destruction
device_scv_cart_interface(const machine_config &mconfig, device_t &device);
virtual ~device_scv_cart_interface();
// reading and writing
virtual DECLARE_READ8_MEMBER(read_cart) { return 0xff; }
virtual DECLARE_WRITE8_MEMBER(write_cart) {}
virtual DECLARE_WRITE8_MEMBER(write_bank) {}
void rom_alloc(UINT32 size, const char *tag);
void ram_alloc(UINT32 size);
UINT8* get_rom_base() { return m_rom; }
UINT8* get_ram_base() { return &m_ram[0]; }
UINT32 get_rom_size() { return m_rom_size; }
UINT32 get_ram_size() { return m_ram.size(); }
void save_ram() { device().save_item(NAME(m_ram)); }
protected:
// internal state
UINT8 *m_rom;
UINT32 m_rom_size;
dynamic_buffer m_ram;
};
// ======================> scv_cart_slot_device
class scv_cart_slot_device : public device_t,
public device_image_interface,
public device_slot_interface
{
public:
// construction/destruction
scv_cart_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
virtual ~scv_cart_slot_device();
// device-level overrides
virtual void device_start() override;
virtual void device_config_complete() override;
// image-level overrides
virtual image_init_result call_load() override;
virtual void call_unload() override {}
virtual const software_list_loader &get_software_list_loader() const override { return rom_software_list_loader::instance(); }
int get_type() { return m_type; }
int get_cart_type(UINT8 *ROM, UINT32 len);
void save_ram() { if (m_cart && m_cart->get_ram_size()) m_cart->save_ram(); }
virtual iodevice_t image_type() const override { return IO_CARTSLOT; }
virtual bool is_readable() const override { return 1; }
virtual bool is_writeable() const override { return 0; }
virtual bool is_creatable() const override { return 0; }
virtual bool must_be_loaded() const override { return 0; }
virtual bool is_reset_on_load() const override { return 1; }
virtual const char *image_interface() const override { return "scv_cart"; }
virtual const char *file_extensions() const override { return "bin"; }
// slot interface overrides
virtual std::string get_default_card_software() override;
// reading and writing
virtual DECLARE_READ8_MEMBER(read_cart);
virtual DECLARE_WRITE8_MEMBER(write_cart);
virtual DECLARE_WRITE8_MEMBER(write_bank);
protected:
int m_type;
device_scv_cart_interface* m_cart;
};
// device type definition
extern const device_type SCV_CART_SLOT;
/***************************************************************************
DEVICE CONFIGURATION MACROS
***************************************************************************/
#define SCVSLOT_ROM_REGION_TAG ":cart:rom"
#define MCFG_SCV_CARTRIDGE_ADD(_tag,_slot_intf,_def_slot) \
MCFG_DEVICE_ADD(_tag, SCV_CART_SLOT, 0) \
MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, false)
#endif
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