/********************************************************************* a2videoterm.h Implementation of the Apple II Memory Expansion Card *********************************************************************/ #ifndef __A2BUS_VIDEOTERM__ #define __A2BUS_VIDEOTERM__ #include "emu.h" #include "machine/a2bus.h" #include "video/mc6845.h" //************************************************************************** // TYPE DEFINITIONS //************************************************************************** class a2bus_videx80_device: public device_t, public device_a2bus_card_interface { public: // construction/destruction a2bus_videx80_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); // optional information overrides virtual machine_config_constructor device_mconfig_additions() const; DECLARE_WRITE_LINE_MEMBER(vsync_changed); UINT8 *m_rom, *m_chrrom; UINT8 m_ram[512*4]; int m_framecnt; 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); required_device m_crtc; private: int m_rambank; }; class a2bus_videoterm_device : public a2bus_videx80_device { public: a2bus_videoterm_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); virtual const rom_entry *device_rom_region() const; }; class a2bus_ap16_device : public a2bus_videx80_device { public: a2bus_ap16_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); virtual const rom_entry *device_rom_region() const; virtual UINT8 read_cnxx(address_space &space, UINT8 offset); }; class a2bus_ap16alt_device : public a2bus_videx80_device { public: a2bus_ap16alt_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); virtual const rom_entry *device_rom_region() const; virtual UINT8 read_cnxx(address_space &space, UINT8 offset); }; class a2bus_vtc1_device : public a2bus_videx80_device { public: a2bus_vtc1_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); virtual const rom_entry *device_rom_region() const; }; class a2bus_vtc2_device : public a2bus_videx80_device { public: a2bus_vtc2_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_VIDEOTERM; extern const device_type A2BUS_IBSAP16; extern const device_type A2BUS_IBSAP16ALT; extern const device_type A2BUS_VTC1; extern const device_type A2BUS_VTC2; #endif /* __A2BUS_VIDEOTERM__ */