// license:BSD-3-Clause // copyright-holders:smf #ifndef __BUFFER_H__ #define __BUFFER_H__ class input_buffer_device : public device_t { public: input_buffer_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); uint8_t read() { return m_input_data; } DECLARE_READ8_MEMBER(read) { return read(); } DECLARE_WRITE_LINE_MEMBER(write_bit0) { if (state) m_input_data |= 0x01; else m_input_data &= ~0x01; } DECLARE_WRITE_LINE_MEMBER(write_bit1) { if (state) m_input_data |= 0x02; else m_input_data &= ~0x02; } DECLARE_WRITE_LINE_MEMBER(write_bit2) { if (state) m_input_data |= 0x04; else m_input_data &= ~0x04; } DECLARE_WRITE_LINE_MEMBER(write_bit3) { if (state) m_input_data |= 0x08; else m_input_data &= ~0x08; } DECLARE_WRITE_LINE_MEMBER(write_bit4) { if (state) m_input_data |= 0x10; else m_input_data &= ~0x10; } DECLARE_WRITE_LINE_MEMBER(write_bit5) { if (state) m_input_data |= 0x20; else m_input_data &= ~0x20; } DECLARE_WRITE_LINE_MEMBER(write_bit6) { if (state) m_input_data |= 0x40; else m_input_data &= ~0x40; } DECLARE_WRITE_LINE_MEMBER(write_bit7) { if (state) m_input_data |= 0x80; else m_input_data &= ~0x80; } protected: virtual void device_start() override; uint8_t m_input_data; }; extern const device_type INPUT_BUFFER; #endif