// license:BSD-3-Clause // copyright-holders:Nigel Barnes /********************************************************************** Solidisk Fourmeg RAM/ROM Expansions http://chrisacorns.computinghistory.org.uk/8bit_Upgrades/Solidisk_4Meg.html **********************************************************************/ #ifndef MAME_BUS_BBC_INTERNAL_STL4M32_H #define MAME_BUS_BBC_INTERNAL_STL4M32_H #include "internal.h" //************************************************************************** // TYPE DEFINITIONS //************************************************************************** class bbc_stl4m32_device : public device_t, public device_bbc_internal_interface { public: // construction/destruction bbc_stl4m32_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock); DECLARE_INPUT_CHANGED_MEMBER(clock_switch); protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; // optional information overrides virtual void device_add_mconfig(machine_config &config) override; virtual ioport_constructor device_input_ports() const override; virtual const tiny_rom_entry *device_rom_region() const override; virtual bool overrides_rom() override { return true; } virtual bool overrides_ram() override { return true; } virtual bool overrides_mos() override { return true; } virtual uint8_t ram_r(offs_t offset) override; virtual void ram_w(offs_t offset, uint8_t data) override; virtual void romsel_w(offs_t offset, uint8_t data) override; virtual uint8_t paged_r(offs_t offset) override; virtual void paged_w(offs_t offset, uint8_t data) override; virtual uint8_t mos_r(offs_t offset) override; virtual void mos_w(offs_t offset, uint8_t data) override; optional_device_array m_rom; std::unique_ptr m_ram; uint8_t m_romsel; uint8_t m_ramsel; uint8_t m_shadow; }; // device type definition DECLARE_DEVICE_TYPE(BBC_STL4M32, bbc_stl4m32_device); #endif /* MAME_BUS_BBC_INTERNAL_STL4M32_H */