// license:BSD-3-Clause // copyright-holders:TwistedTom /********************************************************************* Spec-Mate back-up interface (A, T & Y Computing Ltd.) *********************************************************************/ #ifndef MAME_BUS_SPECTRUM_SPECMATE_H #define MAME_BUS_SPECTRUM_SPECMATE_H #include "exp.h" //************************************************************************** // TYPE DEFINITIONS //************************************************************************** class spectrum_specmate_device : public device_t, public device_spectrum_expansion_interface { public: // construction/destruction spectrum_specmate_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock); DECLARE_INPUT_CHANGED_MEMBER(freeze_button) { m_slot->nmi_w(newval ? CLEAR_LINE : ASSERT_LINE); } 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 const tiny_rom_entry *device_rom_region() const override; virtual ioport_constructor device_input_ports() const override; virtual void pre_opcode_fetch(offs_t offset) override; virtual uint8_t mreq_r(offs_t offset) override; virtual DECLARE_READ_LINE_MEMBER(romcs) override; // passthru virtual void post_opcode_fetch(offs_t offset) override { m_exp->post_opcode_fetch(offset); } virtual void pre_data_fetch(offs_t offset) override { m_exp->pre_data_fetch(offset); } virtual void post_data_fetch(offs_t offset) override { m_exp->post_data_fetch(offset); } virtual void mreq_w(offs_t offset, uint8_t data) override { if (m_exp->romcs()) m_exp->mreq_w(offset, data); } virtual uint8_t iorq_r(offs_t offset) override { return m_exp->iorq_r(offset); } virtual void iorq_w(offs_t offset, uint8_t data) override { m_exp->iorq_w(offset, data); } required_memory_region m_rom; required_device m_exp; int m_romcs; }; // device type definition DECLARE_DEVICE_TYPE(SPECTRUM_SPECMATE, spectrum_specmate_device) #endif // MAME_BUS_SPECTRUM_SPECMATE_H