/*
    FILE    : LINKIO.H
    PROJECT : dView
    Author  : Phil Atkin


    (C) Division Ltd 1991 / 1992.
    
    Header file for linkio.c
    low-level driver interface for transputer links / link adapters

*/

#ifndef linkio_h
#define linkio_h

#include "basictyp.h"

#ifdef UNIX 
extern void initLA (char *);
#else
extern void initLA (void);
#endif

#define link_io_error __connected=0; printf
#define link_io_ABORTCHECK if (__connected == 0) goto abort
#define link_io_EXITZERO   abort: return 0
#define link_io_EXIT       abort: return

extern int32 __connected;

extern void linkio_error ( char* );

extern void setLA ( int );
extern void reset(void);
extern int32 outputOrFail ( unsigned char b);
extern int32 inputOrFail ( unsigned char *b);
extern int32 inputReady(void);
extern int32 altRecord (void);

extern int32 outRecord(char *packet, int32 bytes );
extern int32 inRecord(char *packet, int32 bytes );
extern int32 fifo_ok_status(void);

#endif