diff options
Diffstat (limited to 'src/emu/bus/odyssey2/slot.h')
-rw-r--r-- | src/emu/bus/odyssey2/slot.h | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/src/emu/bus/odyssey2/slot.h b/src/emu/bus/odyssey2/slot.h new file mode 100644 index 00000000000..f1f30c58587 --- /dev/null +++ b/src/emu/bus/odyssey2/slot.h @@ -0,0 +1,120 @@ +#ifndef __O2_SLOT_H +#define __O2_SLOT_H + +/*************************************************************************** + TYPE DEFINITIONS + ***************************************************************************/ + + +/* PCB */ +enum +{ + O2_STD = 0, + O2_ROM12, + O2_ROM16, + O2_CHESS, + O2_VOICE +}; + + +// ======================> device_o2_cart_interface + +class device_o2_cart_interface : public device_slot_card_interface +{ +public: + // construction/destruction + device_o2_cart_interface(const machine_config &mconfig, device_t &device); + virtual ~device_o2_cart_interface(); + + // reading and writing + virtual DECLARE_READ8_MEMBER(read_rom04) { return 0xff; } + virtual DECLARE_READ8_MEMBER(read_rom0c) { return 0xff; } + virtual void write_bank(int bank) {} + + virtual DECLARE_WRITE8_MEMBER(io_write) {} + virtual DECLARE_READ8_MEMBER(t0_read) { return 0; } + + 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; } + UINT32 get_rom_size() { return m_rom_size; } + UINT32 get_ram_size() { return m_ram.count(); } + +protected: + // internal state + UINT8 *m_rom; + UINT32 m_rom_size; + dynamic_buffer m_ram; +}; + + +// ======================> o2_cart_slot_device + +class o2_cart_slot_device : public device_t, + public device_image_interface, + public device_slot_interface +{ +public: + // construction/destruction + o2_cart_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + virtual ~o2_cart_slot_device(); + + // device-level overrides + virtual void device_start(); + virtual void device_config_complete(); + + // image-level overrides + virtual bool call_load(); + virtual void call_unload() {} + virtual bool call_softlist_load(software_list_device &swlist, const char *swname, const rom_entry *start_entry); + + int get_type() { return m_type; } + + virtual iodevice_t image_type() const { return IO_CARTSLOT; } + virtual bool is_readable() const { return 1; } + virtual bool is_writeable() const { return 0; } + virtual bool is_creatable() const { return 0; } + virtual bool must_be_loaded() const { return 0; } + virtual bool is_reset_on_load() const { return 1; } + virtual const option_guide *create_option_guide() const { return NULL; } + virtual const char *image_interface() const { return "odyssey_cart"; } + virtual const char *file_extensions() const { return "bin,rom"; } + + // slot interface overrides + virtual void get_default_card_software(astring &result); + + // reading and writing + virtual DECLARE_READ8_MEMBER(read_rom04); + virtual DECLARE_READ8_MEMBER(read_rom0c); + virtual DECLARE_WRITE8_MEMBER(io_write); + virtual DECLARE_READ8_MEMBER(t0_read) { if (m_cart) return m_cart->t0_read(space, offset); else return 0; } + + virtual void write_bank(int bank) { if (m_cart) m_cart->write_bank(bank); } + +protected: + + int m_type; + device_o2_cart_interface* m_cart; +}; + + + +// device type definition +extern const device_type O2_CART_SLOT; + + +/*************************************************************************** + DEVICE CONFIGURATION MACROS + ***************************************************************************/ + +#define O2SLOT_ROM_REGION_TAG ":cart:rom" + +#define MCFG_O2_CARTRIDGE_ADD(_tag,_slot_intf,_def_slot) \ + MCFG_DEVICE_ADD(_tag, O2_CART_SLOT, 0) \ + MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, false) \ + + +SLOT_INTERFACE_EXTERN(o2_cart); + +#endif |