// license:BSD-3-Clause // copyright-holders:R. Belmont /********************************************************************* ramcard16k.h Implemention of the Apple II 16K RAM card (aka "language card") *********************************************************************/ #ifndef MAME_BUS_A2BUS_RAMCARD16K_H #define MAME_BUS_A2BUS_RAMCARD16K_H #pragma once #include "a2bus.h" //************************************************************************** // TYPE DEFINITIONS //************************************************************************** class a2bus_ramcard_device: public device_t, public device_a2bus_card_interface { public: // construction/destruction a2bus_ramcard_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); protected: a2bus_ramcard_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock); virtual void device_start() override; virtual void device_reset() override; // overrides of standard a2bus slot functions virtual uint8_t read_c0nx(uint8_t offset) override; virtual void write_c0nx(uint8_t offset, uint8_t data) override; virtual uint8_t read_inh_rom(uint16_t offset) override; virtual void write_inh_rom(uint16_t offset, uint8_t data) override; virtual uint16_t inh_start() override { return 0xd000; } virtual uint16_t inh_end() override { return 0xffff; } virtual int inh_type() override; private: void do_io(int offset, bool writing); int m_inh_state; bool m_prewrite; int m_dxxx_bank; uint8_t m_ram[16*1024]; }; // device type definition DECLARE_DEVICE_TYPE(A2BUS_RAMCARD16K, a2bus_ramcard_device) #endif // MAME_BUS_A2BUS_RAMCARD16K_H