// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** Commodore PET 64KB RAM Expansion emulation **********************************************************************/ #pragma once #ifndef __PET_64K__ #define __PET_64K__ #include "emu.h" #include "exp.h" //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> pet_64k_expansion_device class pet_64k_expansion_device : public device_t, public device_pet_expansion_card_interface { public: // construction/destruction pet_64k_expansion_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; // device_pet_expansion_card_interface overrides virtual int pet_norom_r(address_space &space, offs_t offset, int sel) override; virtual UINT8 pet_bd_r(address_space &space, offs_t offset, UINT8 data, int &sel) override; virtual void pet_bd_w(address_space &space, offs_t offset, UINT8 data, int &sel) override; private: inline UINT8 read_ram(offs_t offset); inline void write_ram(offs_t offset, UINT8 data); optional_shared_ptr m_ram; UINT8 m_ctrl; }; // device type definition extern const device_type PET_64K; #endif