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/**
* N: I/O
*/
#ifndef NIO_H
#define NIO_H
#define DFUJI 0x71
#define DREAD 0x40
#define DWRITE 0x80
#define DUPDATE 0xC0
#define OREAD 0x04
#define OWRITE 0x08
#define OUPDATE 0x0C
#define SUCCESS 1
#define DERROR 144
#define DVSTAT_BYTES_WATING_LO 0
#define DVSTAT_BYTES_WATING_HI 1
#define DVSTAT_PROTOCOL 2
#define DVSTAT_EXTENDED_ERROR 3
char nopen(void);
char nclose(void);
char nstatus(void);
char nread_rxbuf(void);
char nwrite_txbuf(void);
char nreset(void);
#endif /* NIO_H */
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