// 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 MAME_MACHINE_RA17XX_H #define MAME_MACHINE_RA17XX_H #pragma once #include "device.h" #include "cpu/pps4/pps4.h" /************************************* * * Device configuration macros * *************************************/ // Set the read line handler #define MCFG_RA17XX_READ(devcb) \ downcast(*device).set_iord(DEVCB_##devcb); // Set the write line handler #define MCFG_RA17XX_WRITE(devcb) \ downcast(*device).set_iowr(DEVCB_##devcb); #define MCFG_RA17XX_CPU(tag) \ downcast(*device).set_cpu_tag(tag); class ra17xx_device : public device_t { public: ra17xx_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); DECLARE_READ8_MEMBER ( io_r ); DECLARE_WRITE8_MEMBER( io_w ); template devcb_base &set_iord(Object &&cb) { return m_iord.set_callback(std::forward(cb)); } template devcb_base &set_iowr(Object &&cb) { return m_iowr.set_callback(std::forward(cb)); } void set_cpu_tag(const char *tag) { m_cpu.set_tag(tag); } protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; private: uint8_t m_line[16]; //!< input/output flip-flops for 16 I/O lines uint8_t 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) required_device m_cpu; }; DECLARE_DEVICE_TYPE(RA17XX, ra17xx_device) #endif // MAME_MACHINE_RA17XX_H