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// 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"
#define MCFG_FMSCSI_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, FMSCSI, 0)
#define MCFG_FMSCSI_IRQ_HANDLER(_devcb) \
devcb = &fmscsi_device::set_irq_handler(*device, DEVCB_##_devcb);
#define MCFG_FMSCSI_DRQ_HANDLER(_devcb) \
devcb = &fmscsi_device::set_drq_handler(*device, DEVCB_##_devcb);
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);
// static configuration helpers
template <class Object> static devcb_base &set_irq_handler(device_t &device, Object &&cb) { return downcast<fmscsi_device &>(device).m_irq_handler.set_callback(std::forward<Object>(cb)); }
template <class Object> static devcb_base &set_drq_handler(device_t &device, Object &&cb) { return downcast<fmscsi_device &>(device).m_drq_handler.set_callback(std::forward<Object>(cb)); }
// 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
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