/********************************************************************* a2memexp.h Implementation of the Apple II Memory Expansion Card *********************************************************************/ #ifndef __A2BUS_MEMEXP__ #define __A2BUS_MEMEXP__ #include "emu.h" #include "machine/a2bus.h" //************************************************************************** // TYPE DEFINITIONS //************************************************************************** class a2bus_memexp_device: public device_t, public device_a2bus_card_interface { public: // construction/destruction a2bus_memexp_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock); // optional information overrides virtual machine_config_constructor device_mconfig_additions() const; virtual const rom_entry *device_rom_region() const; bool m_isramfactor; UINT8 m_bankhior; int m_addrmask; protected: virtual void device_start(); virtual void device_reset(); // overrides of standard a2bus slot functions virtual UINT8 read_c0nx(address_space &space, UINT8 offset); virtual void write_c0nx(address_space &space, UINT8 offset, UINT8 data); virtual UINT8 read_cnxx(address_space &space, UINT8 offset); virtual UINT8 read_c800(address_space &space, UINT16 offset); private: UINT8 *m_rom; UINT8 m_regs[0x10]; UINT8 m_ram[8*1024*1024]; int m_wptr, m_liveptr; }; class a2bus_memexpapple_device : public a2bus_memexp_device { public: a2bus_memexpapple_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); }; class a2bus_ramfactor_device : public a2bus_memexp_device { public: a2bus_ramfactor_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); virtual const rom_entry *device_rom_region() const; }; // device type definition extern const device_type A2BUS_MEMEXP; extern const device_type A2BUS_RAMFACTOR; #endif /* __A2BUS_MEMEXP__ */