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Diffstat (limited to 'src/devices/bus/m5/slot.h')
-rw-r--r-- | src/devices/bus/m5/slot.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/src/devices/bus/m5/slot.h b/src/devices/bus/m5/slot.h new file mode 100644 index 00000000000..177977043cf --- /dev/null +++ b/src/devices/bus/m5/slot.h @@ -0,0 +1,118 @@ +// license:BSD-3-Clause +// copyright-holders:Fabio Priuli +#ifndef __M5_SLOT_H +#define __M5_SLOT_H + +/*************************************************************************** + TYPE DEFINITIONS + ***************************************************************************/ + + +/* PCB */ +enum +{ + EM_5 = 1, + MEM64KBI, + MEM64KBF, + MEM64KRX +}; + + +#define M5_STD 0 + + +// ======================> device_m5_cart_interface + +class device_m5_cart_interface : public device_slot_card_interface +{ +public: + // construction/destruction + device_m5_cart_interface(const machine_config &mconfig, device_t &device); + virtual ~device_m5_cart_interface(); + + // reading and writing + virtual DECLARE_READ8_MEMBER(read_rom) { return 0xff; } + virtual DECLARE_READ8_MEMBER(read_ram) { return 0xff; } + virtual DECLARE_WRITE8_MEMBER(write_ram) {} + + 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; +}; + + +// ======================> m5_cart_slot_device + +class m5_cart_slot_device : public device_t, + public device_image_interface, + public device_slot_interface +{ +public: + // construction/destruction + m5_cart_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + virtual ~m5_cart_slot_device(); + + // device-level overrides + virtual void device_start() override; + virtual void device_config_complete() override; + + // image-level overrides + virtual bool call_load() override; + virtual void call_unload() override {} + virtual bool call_softlist_load(software_list_device &swlist, const char *swname, const rom_entry *start_entry) override; + + int get_type() { return m_type; } + + 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 option_guide *create_option_guide() const override { return NULL; } + virtual const char *image_interface() const override { return "m5_cart"; } + virtual const char *file_extensions() const override { return "bin,rom"; } + + // slot interface overrides + virtual std::string get_default_card_software() override; + + // reading and writing + virtual DECLARE_READ8_MEMBER(read_rom); + virtual DECLARE_READ8_MEMBER(read_ram); + virtual DECLARE_WRITE8_MEMBER(write_ram); + +protected: + + int m_type; + device_m5_cart_interface* m_cart; +}; + + + +// device type definition +extern const device_type M5_CART_SLOT; + + +/*************************************************************************** + DEVICE CONFIGURATION MACROS + ***************************************************************************/ + +#define M5SLOT_ROM_REGION_TAG ":cart:rom" + +#define MCFG_M5_CARTRIDGE_ADD(_tag,_slot_intf,_def_slot) \ + MCFG_DEVICE_ADD(_tag, M5_CART_SLOT, 0) \ + MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, false) +#endif |