/********************************************************************* a2scsi.h Implementation of the Apple II SCSI Card *********************************************************************/ #ifndef __A2BUS_SCSI__ #define __A2BUS_SCSI__ #include "emu.h" #include "machine/a2bus.h" #include "machine/ncr5380n.h" //************************************************************************** // TYPE DEFINITIONS //************************************************************************** class a2bus_scsi_device: public device_t, public device_a2bus_card_interface { public: // construction/destruction a2bus_scsi_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source); a2bus_scsi_device(const machine_config &mconfig, 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; required_device m_ncr5380; required_device m_scsibus; DECLARE_WRITE_LINE_MEMBER( drq_w ); 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 void write_cnxx(address_space &space, UINT8 offset, UINT8 data); virtual UINT8 read_c800(address_space &space, UINT16 offset); virtual void write_c800(address_space &space, UINT16 offset, UINT8 data); private: UINT8 *m_rom; UINT8 m_ram[8192]; // 8 banks of 1024 bytes int m_rambank, m_rombank; UINT8 m_drq; UINT8 m_bank; bool m_816block; }; // device type definition extern const device_type A2BUS_SCSI; #endif /* __A2BUS_SCSI__ */