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/*
* fm_scsi.h
*
* SCSI controller used in Fujitsu FMR-50, FMR-60, and FM-Towns
*
*/
#ifndef FM_SCSI_H_
#define FM_SCSI_H_
#include "machine/legscsi.h"
// SCSI input lines (from target)
#define FMSCSI_LINE_REQ 0x80
#define FMSCSI_LINE_IO 0x40
#define FMSCSI_LINE_MSG 0x20
#define FMSCSI_LINE_CD 0x10
#define FMSCSI_LINE_BSY 0x08
#define FMSCSI_LINE_EX 0x04
#define FMSCSI_LINE_INT 0x02
#define FMSCSI_LINE_PERR 0x01
// SCSI output lines (to target)
#define FMSCSI_LINE_WEN 0x80
#define FMSCSI_LINE_IMSK 0x40
#define FMSCSI_LINE_RMSK 0x20
#define FMSCSI_LINE_ATN 0x10
#define FMSCSI_LINE_WRD 0x08
#define FMSCSI_LINE_SEL 0x04
#define FMSCSI_LINE_DMAE 0x02
#define FMSCSI_LINE_RST 0x01
#define MCFG_FMSCSI_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, FMSCSI, 0)
#define MCFG_FMSCSI_IRQ_HANDLER(_devcb) \
devcb = &fmscsi_device::set_irq_handler(*device, DEVCB2_##_devcb);
#define MCFG_FMSCSI_DRQ_HANDLER(_devcb) \
devcb = &fmscsi_device::set_drq_handler(*device, DEVCB2_##_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 clock);
// static configuration helpers
template<class _Object> static devcb2_base &set_irq_handler(device_t &device, _Object object) { return downcast<fmscsi_device &>(device).m_irq_handler.set_callback(object); }
template<class _Object> static devcb2_base &set_drq_handler(device_t &device, _Object object) { return downcast<fmscsi_device &>(device).m_drq_handler.set_callback(object); }
// any publically accessible interfaces needed for runtime
UINT8 fmscsi_data_r(void);
void fmscsi_data_w(UINT8 data);
UINT8 fmscsi_status_r(void);
void fmscsi_control_w(UINT8 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 line, UINT8 state);
UINT8 get_input_line(UINT8 line);
void set_output_line(UINT8 line, UINT8 state);
UINT8 get_output_line(UINT8 line);
protected:
// device-level overrides (none are required, but these are common)
virtual void device_start();
virtual void device_reset();
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
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 cbyte);
devcb2_write_line m_irq_handler;
devcb2_write_line m_drq_handler;
UINT8 m_command[32];
//UINT8 m_result[32];
UINT8 m_command_index;
int m_result_length;
UINT32 m_result_index;
UINT8 m_input_lines;
UINT8 m_output_lines;
UINT8 m_data;
UINT8 m_last_id;
UINT8 m_phase;
UINT8 m_target;
UINT8 m_buffer[512];
emu_timer* m_transfer_timer;
emu_timer* m_phase_timer;
};
extern const device_type FMSCSI;
#endif /* FM_SCSI_H_ */
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