// license:BSD-3-Clause // copyright-holders:Barry Rodewald /* * fm_scsi.h * * SCSI controller used in Fujitsu FMR-50, FMR-60, and FM-Towns * */ #ifndef MAME_MACHINE_FM_SCSI_H #define MAME_MACHINE_FM_SCSI_H #include "machine/legscsi.h" class fmscsi_device : public legacy_scsi_host_adapter { public: // construction/destruction fmscsi_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); // configuration helpers auto irq_handler() { return m_irq_handler.bind(); } auto drq_handler() { return m_drq_handler.bind(); } // any publically accessible interfaces needed for runtime uint8_t fmscsi_data_r(void); void fmscsi_data_w(uint8_t data); uint8_t fmscsi_status_r(void); void fmscsi_control_w(uint8_t data); DECLARE_READ8_MEMBER( fmscsi_r ); DECLARE_WRITE8_MEMBER( fmscsi_w ); void set_phase(int phase); int get_phase(void); void set_input_line(uint8_t line, uint8_t state); uint8_t get_input_line(uint8_t line); void set_output_line(uint8_t line, uint8_t state); uint8_t get_output_line(uint8_t line); protected: // device-level overrides (none are required, but these are common) virtual void device_start() override; virtual void device_reset() override; virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override; private: // internal device state goes here static const device_timer_id TIMER_TRANSFER = 0; static const device_timer_id TIMER_PHASE = 1; int get_scsi_cmd_len(uint8_t cbyte); void stop_transfer(); devcb_write_line m_irq_handler; devcb_write_line m_drq_handler; uint8_t m_command[32]; //uint8_t m_result[32]; uint8_t m_command_index; int m_result_length; uint32_t m_result_index; uint8_t m_input_lines; uint8_t m_output_lines; uint8_t m_data; uint8_t m_last_id; uint8_t m_phase; uint8_t m_target; uint8_t m_buffer[512]; emu_timer* m_transfer_timer; emu_timer* m_phase_timer; }; DECLARE_DEVICE_TYPE(FMSCSI, fmscsi_device) #endif // MAME_MACHINE_FM_SCSI_H