// license:BSD-3-Clause // copyright-holders:Juergen Buchmueller /********************************************************************** Rockwell RA17xx (e.g. A1752, A1753) ROM, RAM and I/O chip Juergen Buchmueller The device integrates a 2048 x 8 ROM, a 128 x 4 RAM and and 16 I/O ports at one of the port ranges 00 ... 0f, 20 ... 2f, 40 ... 4f or 60 ... 6f. **********************************************************************/ #ifndef __RA17XX_H__ #define __RA17XX_H__ #include "device.h" /************************************* * * Device configuration macros * *************************************/ /* Set the read line handler */ #define MCFG_RA17XX_READ(_devcb) \ ra17xx_device::set_iord(*device, DEVCB_##_devcb); /* Set the write line handler */ #define MCFG_RA17XX_WRITE(_devcb) \ ra17xx_device::set_iowr(*device, DEVCB_##_devcb); class ra17xx_device : public device_t { public: ra17xx_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock); ~ra17xx_device() {} DECLARE_READ8_MEMBER ( io_r ); DECLARE_WRITE8_MEMBER( io_w ); template static devcb_base &set_iord(device_t &device, _Object object) { return downcast(device).m_iord.set_callback(object); } template static devcb_base &set_iowr(device_t &device, _Object object) { return downcast(device).m_iowr.set_callback(object); } protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; private: UINT8 m_line[16]; //!< input/output flip-flops for 16 I/O lines UINT8 m_bl; //!< value of BL during the most recent output bool m_enable; //!< true if outputs are enabled devcb_read8 m_iord; //!< input line (read, offset = line, data = 0/1) devcb_write8 m_iowr; //!< output line (write, offset = line, data = 0/1) }; extern const device_type RA17XX; #endif /* __RA17XX_H__ */